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//===---- CGBuiltin.cpp - Emit LLVM Code for builtins ---------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This contains code to emit Builtin calls as LLVM code.
//
//===----------------------------------------------------------------------===//
#include "CodeGenFunction.h"
#include "CGCXXABI.h"
#include "CGObjCRuntime.h"
#include "CodeGenModule.h"
#include "TargetInfo.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/Basic/TargetBuiltins.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/CodeGen/CGFunctionInfo.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/IR/CallSite.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/Intrinsics.h"
#include <sstream>
using namespace clang;
using namespace CodeGen;
using namespace llvm;
/// getBuiltinLibFunction - Given a builtin id for a function like
/// "__builtin_fabsf", return a Function* for "fabsf".
llvm::Value *CodeGenModule::getBuiltinLibFunction(const FunctionDecl *FD,
unsigned BuiltinID) {
assert(Context.BuiltinInfo.isLibFunction(BuiltinID));
// Get the name, skip over the __builtin_ prefix (if necessary).
StringRef Name;
GlobalDecl D(FD);
// If the builtin has been declared explicitly with an assembler label,
// use the mangled name. This differs from the plain label on platforms
// that prefix labels.
if (FD->hasAttr<AsmLabelAttr>())
Name = getMangledName(D);
else
Name = Context.BuiltinInfo.getName(BuiltinID) + 10;
llvm::FunctionType *Ty =
cast<llvm::FunctionType>(getTypes().ConvertType(FD->getType()));
return GetOrCreateLLVMFunction(Name, Ty, D, /*ForVTable=*/false);
}
/// Emit the conversions required to turn the given value into an
/// integer of the given size.
static Value *EmitToInt(CodeGenFunction &CGF, llvm::Value *V,
QualType T, llvm::IntegerType *IntType) {
V = CGF.EmitToMemory(V, T);
if (V->getType()->isPointerTy())
return CGF.Builder.CreatePtrToInt(V, IntType);
assert(V->getType() == IntType);
return V;
}
static Value *EmitFromInt(CodeGenFunction &CGF, llvm::Value *V,
QualType T, llvm::Type *ResultType) {
V = CGF.EmitFromMemory(V, T);
if (ResultType->isPointerTy())
return CGF.Builder.CreateIntToPtr(V, ResultType);
assert(V->getType() == ResultType);
return V;
}
/// Utility to insert an atomic instruction based on Instrinsic::ID
/// and the expression node.
static Value *MakeBinaryAtomicValue(CodeGenFunction &CGF,
llvm::AtomicRMWInst::BinOp Kind,
const CallExpr *E) {
QualType T = E->getType();
assert(E->getArg(0)->getType()->isPointerType());
assert(CGF.getContext().hasSameUnqualifiedType(T,
E->getArg(0)->getType()->getPointeeType()));
assert(CGF.getContext().hasSameUnqualifiedType(T, E->getArg(1)->getType()));
llvm::Value *DestPtr = CGF.EmitScalarExpr(E->getArg(0));
unsigned AddrSpace = DestPtr->getType()->getPointerAddressSpace();
llvm::IntegerType *IntType =
llvm::IntegerType::get(CGF.getLLVMContext(),
CGF.getContext().getTypeSize(T));
llvm::Type *IntPtrType = IntType->getPointerTo(AddrSpace);
llvm::Value *Args[2];
Args[0] = CGF.Builder.CreateBitCast(DestPtr, IntPtrType);
Args[1] = CGF.EmitScalarExpr(E->getArg(1));
llvm::Type *ValueType = Args[1]->getType();
Args[1] = EmitToInt(CGF, Args[1], T, IntType);
llvm::Value *Result =
CGF.Builder.CreateAtomicRMW(Kind, Args[0], Args[1],
llvm::SequentiallyConsistent);
return EmitFromInt(CGF, Result, T, ValueType);
}
static Value *EmitNontemporalStore(CodeGenFunction &CGF, const CallExpr *E) {
Value *Val = CGF.EmitScalarExpr(E->getArg(0));
Value *Address = CGF.EmitScalarExpr(E->getArg(1));
// Convert the type of the pointer to a pointer to the stored type.
Val = CGF.EmitToMemory(Val, E->getArg(0)->getType());
Value *BC = CGF.Builder.CreateBitCast(
Address, llvm::PointerType::getUnqual(Val->getType()), "cast");
LValue LV = CGF.MakeNaturalAlignAddrLValue(BC, E->getArg(0)->getType());
LV.setNontemporal(true);
CGF.EmitStoreOfScalar(Val, LV, false);
return nullptr;
}
static Value *EmitNontemporalLoad(CodeGenFunction &CGF, const CallExpr *E) {
Value *Address = CGF.EmitScalarExpr(E->getArg(0));
LValue LV = CGF.MakeNaturalAlignAddrLValue(Address, E->getType());
LV.setNontemporal(true);
return CGF.EmitLoadOfScalar(LV, E->getExprLoc());
}
static RValue EmitBinaryAtomic(CodeGenFunction &CGF,
llvm::AtomicRMWInst::BinOp Kind,
const CallExpr *E) {
return RValue::get(MakeBinaryAtomicValue(CGF, Kind, E));
}
/// Utility to insert an atomic instruction based Instrinsic::ID and
/// the expression node, where the return value is the result of the
/// operation.
static RValue EmitBinaryAtomicPost(CodeGenFunction &CGF,
llvm::AtomicRMWInst::BinOp Kind,
const CallExpr *E,
Instruction::BinaryOps Op,
bool Invert = false) {
QualType T = E->getType();
assert(E->getArg(0)->getType()->isPointerType());
assert(CGF.getContext().hasSameUnqualifiedType(T,
E->getArg(0)->getType()->getPointeeType()));
assert(CGF.getContext().hasSameUnqualifiedType(T, E->getArg(1)->getType()));
llvm::Value *DestPtr = CGF.EmitScalarExpr(E->getArg(0));
unsigned AddrSpace = DestPtr->getType()->getPointerAddressSpace();
llvm::IntegerType *IntType =
llvm::IntegerType::get(CGF.getLLVMContext(),
CGF.getContext().getTypeSize(T));
llvm::Type *IntPtrType = IntType->getPointerTo(AddrSpace);
llvm::Value *Args[2];
Args[1] = CGF.EmitScalarExpr(E->getArg(1));
llvm::Type *ValueType = Args[1]->getType();
Args[1] = EmitToInt(CGF, Args[1], T, IntType);
Args[0] = CGF.Builder.CreateBitCast(DestPtr, IntPtrType);
llvm::Value *Result =
CGF.Builder.CreateAtomicRMW(Kind, Args[0], Args[1],
llvm::SequentiallyConsistent);
Result = CGF.Builder.CreateBinOp(Op, Result, Args[1]);
if (Invert)
Result = CGF.Builder.CreateBinOp(llvm::Instruction::Xor, Result,
llvm::ConstantInt::get(IntType, -1));
Result = EmitFromInt(CGF, Result, T, ValueType);
return RValue::get(Result);
}
/// @brief Utility to insert an atomic cmpxchg instruction.
///
/// @param CGF The current codegen function.
/// @param E Builtin call expression to convert to cmpxchg.
/// arg0 - address to operate on
/// arg1 - value to compare with
/// arg2 - new value
/// @param ReturnBool Specifies whether to return success flag of
/// cmpxchg result or the old value.
///
/// @returns result of cmpxchg, according to ReturnBool
static Value *MakeAtomicCmpXchgValue(CodeGenFunction &CGF, const CallExpr *E,
bool ReturnBool) {
QualType T = ReturnBool ? E->getArg(1)->getType() : E->getType();
llvm::Value *DestPtr = CGF.EmitScalarExpr(E->getArg(0));
unsigned AddrSpace = DestPtr->getType()->getPointerAddressSpace();
llvm::IntegerType *IntType = llvm::IntegerType::get(
CGF.getLLVMContext(), CGF.getContext().getTypeSize(T));
llvm::Type *IntPtrType = IntType->getPointerTo(AddrSpace);
Value *Args[3];
Args[0] = CGF.Builder.CreateBitCast(DestPtr, IntPtrType);
Args[1] = CGF.EmitScalarExpr(E->getArg(1));
llvm::Type *ValueType = Args[1]->getType();
Args[1] = EmitToInt(CGF, Args[1], T, IntType);
Args[2] = EmitToInt(CGF, CGF.EmitScalarExpr(E->getArg(2)), T, IntType);
Value *Pair = CGF.Builder.CreateAtomicCmpXchg(Args[0], Args[1], Args[2],
llvm::SequentiallyConsistent,
llvm::SequentiallyConsistent);
if (ReturnBool)
// Extract boolean success flag and zext it to int.
return CGF.Builder.CreateZExt(CGF.Builder.CreateExtractValue(Pair, 1),
CGF.ConvertType(E->getType()));
else
// Extract old value and emit it using the same type as compare value.
return EmitFromInt(CGF, CGF.Builder.CreateExtractValue(Pair, 0), T,
ValueType);
}
/// EmitFAbs - Emit a call to @llvm.fabs().
static Value *EmitFAbs(CodeGenFunction &CGF, Value *V) {
Value *F = CGF.CGM.getIntrinsic(Intrinsic::fabs, V->getType());
llvm::CallInst *Call = CGF.Builder.CreateCall(F, V);
Call->setDoesNotAccessMemory();
return Call;
}
/// Emit the computation of the sign bit for a floating point value. Returns
/// the i1 sign bit value.
static Value *EmitSignBit(CodeGenFunction &CGF, Value *V) {
LLVMContext &C = CGF.CGM.getLLVMContext();
llvm::Type *Ty = V->getType();
int Width = Ty->getPrimitiveSizeInBits();
llvm::Type *IntTy = llvm::IntegerType::get(C, Width);
V = CGF.Builder.CreateBitCast(V, IntTy);
if (Ty->isPPC_FP128Ty()) {
// We want the sign bit of the higher-order double. The bitcast we just
// did works as if the double-double was stored to memory and then
// read as an i128. The "store" will put the higher-order double in the
// lower address in both little- and big-Endian modes, but the "load"
// will treat those bits as a different part of the i128: the low bits in
// little-Endian, the high bits in big-Endian. Therefore, on big-Endian
// we need to shift the high bits down to the low before truncating.
Width >>= 1;
if (CGF.getTarget().isBigEndian()) {
Value *ShiftCst = llvm::ConstantInt::get(IntTy, Width);
V = CGF.Builder.CreateLShr(V, ShiftCst);
}
// We are truncating value in order to extract the higher-order
// double, which we will be using to extract the sign from.
IntTy = llvm::IntegerType::get(C, Width);
V = CGF.Builder.CreateTrunc(V, IntTy);
}
Value *Zero = llvm::Constant::getNullValue(IntTy);
return CGF.Builder.CreateICmpSLT(V, Zero);
}
static RValue emitLibraryCall(CodeGenFunction &CGF, const FunctionDecl *Fn,
const CallExpr *E, llvm::Value *calleeValue) {
return CGF.EmitCall(E->getCallee()->getType(), calleeValue, E,
ReturnValueSlot(), Fn);
}
/// \brief Emit a call to llvm.{sadd,uadd,ssub,usub,smul,umul}.with.overflow.*
/// depending on IntrinsicID.
///
/// \arg CGF The current codegen function.
/// \arg IntrinsicID The ID for the Intrinsic we wish to generate.
/// \arg X The first argument to the llvm.*.with.overflow.*.
/// \arg Y The second argument to the llvm.*.with.overflow.*.
/// \arg Carry The carry returned by the llvm.*.with.overflow.*.
/// \returns The result (i.e. sum/product) returned by the intrinsic.
static llvm::Value *EmitOverflowIntrinsic(CodeGenFunction &CGF,
const llvm::Intrinsic::ID IntrinsicID,
llvm::Value *X, llvm::Value *Y,
llvm::Value *&Carry) {
// Make sure we have integers of the same width.
assert(X->getType() == Y->getType() &&
"Arguments must be the same type. (Did you forget to make sure both "
"arguments have the same integer width?)");
llvm::Value *Callee = CGF.CGM.getIntrinsic(IntrinsicID, X->getType());
llvm::Value *Tmp = CGF.Builder.CreateCall(Callee, {X, Y});
Carry = CGF.Builder.CreateExtractValue(Tmp, 1);
return CGF.Builder.CreateExtractValue(Tmp, 0);
}
namespace {
struct WidthAndSignedness {
unsigned Width;
bool Signed;
};
}
static WidthAndSignedness
getIntegerWidthAndSignedness(const clang::ASTContext &context,
const clang::QualType Type) {
assert(Type->isIntegerType() && "Given type is not an integer.");
unsigned Width = Type->isBooleanType() ? 1 : context.getTypeInfo(Type).Width;
bool Signed = Type->isSignedIntegerType();
return {Width, Signed};
}
// Given one or more integer types, this function produces an integer type that
// encompasses them: any value in one of the given types could be expressed in
// the encompassing type.
static struct WidthAndSignedness
EncompassingIntegerType(ArrayRef<struct WidthAndSignedness> Types) {
assert(Types.size() > 0 && "Empty list of types.");
// If any of the given types is signed, we must return a signed type.
bool Signed = false;
for (const auto &Type : Types) {
Signed |= Type.Signed;
}
// The encompassing type must have a width greater than or equal to the width
// of the specified types. Aditionally, if the encompassing type is signed,
// its width must be strictly greater than the width of any unsigned types
// given.
unsigned Width = 0;
for (const auto &Type : Types) {
unsigned MinWidth = Type.Width + (Signed && !Type.Signed);
if (Width < MinWidth) {
Width = MinWidth;
}
}
return {Width, Signed};
}
Value *CodeGenFunction::EmitVAStartEnd(Value *ArgValue, bool IsStart) {
llvm::Type *DestType = Int8PtrTy;
if (ArgValue->getType() != DestType)
ArgValue =
Builder.CreateBitCast(ArgValue, DestType, ArgValue->getName().data());
Intrinsic::ID inst = IsStart ? Intrinsic::vastart : Intrinsic::vaend;
return Builder.CreateCall(CGM.getIntrinsic(inst), ArgValue);
}
RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
unsigned BuiltinID, const CallExpr *E,
ReturnValueSlot ReturnValue) {
// See if we can constant fold this builtin. If so, don't emit it at all.
Expr::EvalResult Result;
if (E->EvaluateAsRValue(Result, CGM.getContext()) &&
!Result.hasSideEffects()) {
if (Result.Val.isInt())
return RValue::get(llvm::ConstantInt::get(getLLVMContext(),
Result.Val.getInt()));
if (Result.Val.isFloat())
return RValue::get(llvm::ConstantFP::get(getLLVMContext(),
Result.Val.getFloat()));
}
switch (BuiltinID) {
default: break; // Handle intrinsics and libm functions below.
case Builtin::BI__builtin___CFStringMakeConstantString:
case Builtin::BI__builtin___NSStringMakeConstantString:
return RValue::get(CGM.EmitConstantExpr(E, E->getType(), nullptr));
case Builtin::BI__builtin_stdarg_start:
case Builtin::BI__builtin_va_start:
case Builtin::BI__va_start:
case Builtin::BI__builtin_va_end:
return RValue::get(
EmitVAStartEnd(BuiltinID == Builtin::BI__va_start
? EmitScalarExpr(E->getArg(0))
: EmitVAListRef(E->getArg(0)).getPointer(),
BuiltinID != Builtin::BI__builtin_va_end));
case Builtin::BI__builtin_va_copy: {
Value *DstPtr = EmitVAListRef(E->getArg(0)).getPointer();
Value *SrcPtr = EmitVAListRef(E->getArg(1)).getPointer();
llvm::Type *Type = Int8PtrTy;
DstPtr = Builder.CreateBitCast(DstPtr, Type);
SrcPtr = Builder.CreateBitCast(SrcPtr, Type);
return RValue::get(Builder.CreateCall(CGM.getIntrinsic(Intrinsic::vacopy),
{DstPtr, SrcPtr}));
}
case Builtin::BI__builtin_abs:
case Builtin::BI__builtin_labs:
case Builtin::BI__builtin_llabs: {
Value *ArgValue = EmitScalarExpr(E->getArg(0));
Value *NegOp = Builder.CreateNeg(ArgValue, "neg");
Value *CmpResult =
Builder.CreateICmpSGE(ArgValue,
llvm::Constant::getNullValue(ArgValue->getType()),
"abscond");
Value *Result =
Builder.CreateSelect(CmpResult, ArgValue, NegOp, "abs");
return RValue::get(Result);
}
case Builtin::BI__builtin_fabs:
case Builtin::BI__builtin_fabsf:
case Builtin::BI__builtin_fabsl: {
Value *Arg1 = EmitScalarExpr(E->getArg(0));
Value *Result = EmitFAbs(*this, Arg1);
return RValue::get(Result);
}
case Builtin::BI__builtin_fmod:
case Builtin::BI__builtin_fmodf:
case Builtin::BI__builtin_fmodl: {
Value *Arg1 = EmitScalarExpr(E->getArg(0));
Value *Arg2 = EmitScalarExpr(E->getArg(1));
Value *Result = Builder.CreateFRem(Arg1, Arg2, "fmod");
return RValue::get(Result);
}
case Builtin::BI__builtin_conj:
case Builtin::BI__builtin_conjf:
case Builtin::BI__builtin_conjl: {
ComplexPairTy ComplexVal = EmitComplexExpr(E->getArg(0));
Value *Real = ComplexVal.first;
Value *Imag = ComplexVal.second;
Value *Zero =
Imag->getType()->isFPOrFPVectorTy()
? llvm::ConstantFP::getZeroValueForNegation(Imag->getType())
: llvm::Constant::getNullValue(Imag->getType());
Imag = Builder.CreateFSub(Zero, Imag, "sub");
return RValue::getComplex(std::make_pair(Real, Imag));
}
case Builtin::BI__builtin_creal:
case Builtin::BI__builtin_crealf:
case Builtin::BI__builtin_creall:
case Builtin::BIcreal:
case Builtin::BIcrealf:
case Builtin::BIcreall: {
ComplexPairTy ComplexVal = EmitComplexExpr(E->getArg(0));
return RValue::get(ComplexVal.first);
}
case Builtin::BI__builtin_cimag:
case Builtin::BI__builtin_cimagf:
case Builtin::BI__builtin_cimagl:
case Builtin::BIcimag:
case Builtin::BIcimagf:
case Builtin::BIcimagl: {
ComplexPairTy ComplexVal = EmitComplexExpr(E->getArg(0));
return RValue::get(ComplexVal.second);
}
case Builtin::BI__builtin_ctzs:
case Builtin::BI__builtin_ctz:
case Builtin::BI__builtin_ctzl:
case Builtin::BI__builtin_ctzll: {
Value *ArgValue = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = ArgValue->getType();
Value *F = CGM.getIntrinsic(Intrinsic::cttz, ArgType);
llvm::Type *ResultType = ConvertType(E->getType());
Value *ZeroUndef = Builder.getInt1(getTarget().isCLZForZeroUndef());
Value *Result = Builder.CreateCall(F, {ArgValue, ZeroUndef});
if (Result->getType() != ResultType)
Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
"cast");
return RValue::get(Result);
}
case Builtin::BI__builtin_clzs:
case Builtin::BI__builtin_clz:
case Builtin::BI__builtin_clzl:
case Builtin::BI__builtin_clzll: {
Value *ArgValue = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = ArgValue->getType();
Value *F = CGM.getIntrinsic(Intrinsic::ctlz, ArgType);
llvm::Type *ResultType = ConvertType(E->getType());
Value *ZeroUndef = Builder.getInt1(getTarget().isCLZForZeroUndef());
Value *Result = Builder.CreateCall(F, {ArgValue, ZeroUndef});
if (Result->getType() != ResultType)
Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
"cast");
return RValue::get(Result);
}
case Builtin::BI__builtin_ffs:
case Builtin::BI__builtin_ffsl:
case Builtin::BI__builtin_ffsll: {
// ffs(x) -> x ? cttz(x) + 1 : 0
Value *ArgValue = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = ArgValue->getType();
Value *F = CGM.getIntrinsic(Intrinsic::cttz, ArgType);
llvm::Type *ResultType = ConvertType(E->getType());
Value *Tmp =
Builder.CreateAdd(Builder.CreateCall(F, {ArgValue, Builder.getTrue()}),
llvm::ConstantInt::get(ArgType, 1));
Value *Zero = llvm::Constant::getNullValue(ArgType);
Value *IsZero = Builder.CreateICmpEQ(ArgValue, Zero, "iszero");
Value *Result = Builder.CreateSelect(IsZero, Zero, Tmp, "ffs");
if (Result->getType() != ResultType)
Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
"cast");
return RValue::get(Result);
}
case Builtin::BI__builtin_parity:
case Builtin::BI__builtin_parityl:
case Builtin::BI__builtin_parityll: {
// parity(x) -> ctpop(x) & 1
Value *ArgValue = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = ArgValue->getType();
Value *F = CGM.getIntrinsic(Intrinsic::ctpop, ArgType);
llvm::Type *ResultType = ConvertType(E->getType());
Value *Tmp = Builder.CreateCall(F, ArgValue);
Value *Result = Builder.CreateAnd(Tmp, llvm::ConstantInt::get(ArgType, 1));
if (Result->getType() != ResultType)
Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
"cast");
return RValue::get(Result);
}
case Builtin::BI__builtin_popcount:
case Builtin::BI__builtin_popcountl:
case Builtin::BI__builtin_popcountll: {
Value *ArgValue = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = ArgValue->getType();
Value *F = CGM.getIntrinsic(Intrinsic::ctpop, ArgType);
llvm::Type *ResultType = ConvertType(E->getType());
Value *Result = Builder.CreateCall(F, ArgValue);
if (Result->getType() != ResultType)
Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
"cast");
return RValue::get(Result);
}
case Builtin::BI__builtin_unpredictable: {
// Always return the argument of __builtin_unpredictable. LLVM does not
// handle this builtin. Metadata for this builtin should be added directly
// to instructions such as branches or switches that use it.
return RValue::get(EmitScalarExpr(E->getArg(0)));
}
case Builtin::BI__builtin_expect: {
Value *ArgValue = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = ArgValue->getType();
Value *ExpectedValue = EmitScalarExpr(E->getArg(1));
// Don't generate llvm.expect on -O0 as the backend won't use it for
// anything.
// Note, we still IRGen ExpectedValue because it could have side-effects.
if (CGM.getCodeGenOpts().OptimizationLevel == 0)
return RValue::get(ArgValue);
Value *FnExpect = CGM.getIntrinsic(Intrinsic::expect, ArgType);
Value *Result =
Builder.CreateCall(FnExpect, {ArgValue, ExpectedValue}, "expval");
return RValue::get(Result);
}
case Builtin::BI__builtin_assume_aligned: {
Value *PtrValue = EmitScalarExpr(E->getArg(0));
Value *OffsetValue =
(E->getNumArgs() > 2) ? EmitScalarExpr(E->getArg(2)) : nullptr;
Value *AlignmentValue = EmitScalarExpr(E->getArg(1));
ConstantInt *AlignmentCI = cast<ConstantInt>(AlignmentValue);
unsigned Alignment = (unsigned) AlignmentCI->getZExtValue();
EmitAlignmentAssumption(PtrValue, Alignment, OffsetValue);
return RValue::get(PtrValue);
}
case Builtin::BI__assume:
case Builtin::BI__builtin_assume: {
if (E->getArg(0)->HasSideEffects(getContext()))
return RValue::get(nullptr);
Value *ArgValue = EmitScalarExpr(E->getArg(0));
Value *FnAssume = CGM.getIntrinsic(Intrinsic::assume);
return RValue::get(Builder.CreateCall(FnAssume, ArgValue));
}
case Builtin::BI__builtin_bswap16:
case Builtin::BI__builtin_bswap32:
case Builtin::BI__builtin_bswap64: {
Value *ArgValue = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = ArgValue->getType();
Value *F = CGM.getIntrinsic(Intrinsic::bswap, ArgType);
return RValue::get(Builder.CreateCall(F, ArgValue));
}
case Builtin::BI__builtin_object_size: {
// We rely on constant folding to deal with expressions with side effects.
assert(!E->getArg(0)->HasSideEffects(getContext()) &&
"should have been constant folded");
// We pass this builtin onto the optimizer so that it can
// figure out the object size in more complex cases.
llvm::Type *ResType = ConvertType(E->getType());
// LLVM only supports 0 and 2, make sure that we pass along that
// as a boolean.
Value *Ty = EmitScalarExpr(E->getArg(1));
ConstantInt *CI = dyn_cast<ConstantInt>(Ty);
assert(CI);
uint64_t val = CI->getZExtValue();
CI = ConstantInt::get(Builder.getInt1Ty(), (val & 0x2) >> 1);
// FIXME: Get right address space.
llvm::Type *Tys[] = { ResType, Builder.getInt8PtrTy(0) };
Value *F = CGM.getIntrinsic(Intrinsic::objectsize, Tys);
return RValue::get(
Builder.CreateCall(F, {EmitScalarExpr(E->getArg(0)), CI}));
}
case Builtin::BI__builtin_prefetch: {
Value *Locality, *RW, *Address = EmitScalarExpr(E->getArg(0));
// FIXME: Technically these constants should of type 'int', yes?
RW = (E->getNumArgs() > 1) ? EmitScalarExpr(E->getArg(1)) :
llvm::ConstantInt::get(Int32Ty, 0);
Locality = (E->getNumArgs() > 2) ? EmitScalarExpr(E->getArg(2)) :
llvm::ConstantInt::get(Int32Ty, 3);
Value *Data = llvm::ConstantInt::get(Int32Ty, 1);
Value *F = CGM.getIntrinsic(Intrinsic::prefetch);
return RValue::get(Builder.CreateCall(F, {Address, RW, Locality, Data}));
}
case Builtin::BI__builtin_readcyclecounter: {
Value *F = CGM.getIntrinsic(Intrinsic::readcyclecounter);
return RValue::get(Builder.CreateCall(F));
}
case Builtin::BI__builtin___clear_cache: {
Value *Begin = EmitScalarExpr(E->getArg(0));
Value *End = EmitScalarExpr(E->getArg(1));
Value *F = CGM.getIntrinsic(Intrinsic::clear_cache);
return RValue::get(Builder.CreateCall(F, {Begin, End}));
}
case Builtin::BI__builtin_trap:
return RValue::get(EmitTrapCall(Intrinsic::trap));
case Builtin::BI__debugbreak:
return RValue::get(EmitTrapCall(Intrinsic::debugtrap));
case Builtin::BI__builtin_unreachable: {
if (SanOpts.has(SanitizerKind::Unreachable)) {
SanitizerScope SanScope(this);
EmitCheck(std::make_pair(static_cast<llvm::Value *>(Builder.getFalse()),
SanitizerKind::Unreachable),
"builtin_unreachable", EmitCheckSourceLocation(E->getExprLoc()),
None);
} else
Builder.CreateUnreachable();
// We do need to preserve an insertion point.
EmitBlock(createBasicBlock("unreachable.cont"));
return RValue::get(nullptr);
}
case Builtin::BI__builtin_powi:
case Builtin::BI__builtin_powif:
case Builtin::BI__builtin_powil: {
Value *Base = EmitScalarExpr(E->getArg(0));
Value *Exponent = EmitScalarExpr(E->getArg(1));
llvm::Type *ArgType = Base->getType();
Value *F = CGM.getIntrinsic(Intrinsic::powi, ArgType);
return RValue::get(Builder.CreateCall(F, {Base, Exponent}));
}
case Builtin::BI__builtin_isgreater:
case Builtin::BI__builtin_isgreaterequal:
case Builtin::BI__builtin_isless:
case Builtin::BI__builtin_islessequal:
case Builtin::BI__builtin_islessgreater:
case Builtin::BI__builtin_isunordered: {
// Ordered comparisons: we know the arguments to these are matching scalar
// floating point values.
Value *LHS = EmitScalarExpr(E->getArg(0));
Value *RHS = EmitScalarExpr(E->getArg(1));
switch (BuiltinID) {
default: llvm_unreachable("Unknown ordered comparison");
case Builtin::BI__builtin_isgreater:
LHS = Builder.CreateFCmpOGT(LHS, RHS, "cmp");
break;
case Builtin::BI__builtin_isgreaterequal:
LHS = Builder.CreateFCmpOGE(LHS, RHS, "cmp");
break;
case Builtin::BI__builtin_isless:
LHS = Builder.CreateFCmpOLT(LHS, RHS, "cmp");
break;
case Builtin::BI__builtin_islessequal:
LHS = Builder.CreateFCmpOLE(LHS, RHS, "cmp");
break;
case Builtin::BI__builtin_islessgreater:
LHS = Builder.CreateFCmpONE(LHS, RHS, "cmp");
break;
case Builtin::BI__builtin_isunordered:
LHS = Builder.CreateFCmpUNO(LHS, RHS, "cmp");
break;
}
// ZExt bool to int type.
return RValue::get(Builder.CreateZExt(LHS, ConvertType(E->getType())));
}
case Builtin::BI__builtin_isnan: {
Value *V = EmitScalarExpr(E->getArg(0));
V = Builder.CreateFCmpUNO(V, V, "cmp");
return RValue::get(Builder.CreateZExt(V, ConvertType(E->getType())));
}
case Builtin::BI__builtin_isinf: {
// isinf(x) --> fabs(x) == infinity
Value *V = EmitScalarExpr(E->getArg(0));
V = EmitFAbs(*this, V);
V = Builder.CreateFCmpOEQ(V, ConstantFP::getInfinity(V->getType()),"isinf");
return RValue::get(Builder.CreateZExt(V, ConvertType(E->getType())));
}
case Builtin::BI__builtin_isinf_sign: {
// isinf_sign(x) -> fabs(x) == infinity ? (signbit(x) ? -1 : 1) : 0
Value *Arg = EmitScalarExpr(E->getArg(0));
Value *AbsArg = EmitFAbs(*this, Arg);
Value *IsInf = Builder.CreateFCmpOEQ(
AbsArg, ConstantFP::getInfinity(Arg->getType()), "isinf");
Value *IsNeg = EmitSignBit(*this, Arg);
llvm::Type *IntTy = ConvertType(E->getType());
Value *Zero = Constant::getNullValue(IntTy);
Value *One = ConstantInt::get(IntTy, 1);
Value *NegativeOne = ConstantInt::get(IntTy, -1);
Value *SignResult = Builder.CreateSelect(IsNeg, NegativeOne, One);
Value *Result = Builder.CreateSelect(IsInf, SignResult, Zero);
return RValue::get(Result);
}
case Builtin::BI__builtin_isnormal: {
// isnormal(x) --> x == x && fabsf(x) < infinity && fabsf(x) >= float_min
Value *V = EmitScalarExpr(E->getArg(0));
Value *Eq = Builder.CreateFCmpOEQ(V, V, "iseq");
Value *Abs = EmitFAbs(*this, V);
Value *IsLessThanInf =
Builder.CreateFCmpULT(Abs, ConstantFP::getInfinity(V->getType()),"isinf");
APFloat Smallest = APFloat::getSmallestNormalized(
getContext().getFloatTypeSemantics(E->getArg(0)->getType()));
Value *IsNormal =
Builder.CreateFCmpUGE(Abs, ConstantFP::get(V->getContext(), Smallest),
"isnormal");
V = Builder.CreateAnd(Eq, IsLessThanInf, "and");
V = Builder.CreateAnd(V, IsNormal, "and");
return RValue::get(Builder.CreateZExt(V, ConvertType(E->getType())));
}
case Builtin::BI__builtin_isfinite: {
// isfinite(x) --> x == x && fabs(x) != infinity;
Value *V = EmitScalarExpr(E->getArg(0));
Value *Eq = Builder.CreateFCmpOEQ(V, V, "iseq");
Value *Abs = EmitFAbs(*this, V);
Value *IsNotInf =
Builder.CreateFCmpUNE(Abs, ConstantFP::getInfinity(V->getType()),"isinf");
V = Builder.CreateAnd(Eq, IsNotInf, "and");
return RValue::get(Builder.CreateZExt(V, ConvertType(E->getType())));
}
case Builtin::BI__builtin_fpclassify: {
Value *V = EmitScalarExpr(E->getArg(5));
llvm::Type *Ty = ConvertType(E->getArg(5)->getType());
// Create Result
BasicBlock *Begin = Builder.GetInsertBlock();
BasicBlock *End = createBasicBlock("fpclassify_end", this->CurFn);
Builder.SetInsertPoint(End);
PHINode *Result =
Builder.CreatePHI(ConvertType(E->getArg(0)->getType()), 4,
"fpclassify_result");
// if (V==0) return FP_ZERO
Builder.SetInsertPoint(Begin);
Value *IsZero = Builder.CreateFCmpOEQ(V, Constant::getNullValue(Ty),
"iszero");
Value *ZeroLiteral = EmitScalarExpr(E->getArg(4));
BasicBlock *NotZero = createBasicBlock("fpclassify_not_zero", this->CurFn);
Builder.CreateCondBr(IsZero, End, NotZero);
Result->addIncoming(ZeroLiteral, Begin);
// if (V != V) return FP_NAN
Builder.SetInsertPoint(NotZero);
Value *IsNan = Builder.CreateFCmpUNO(V, V, "cmp");
Value *NanLiteral = EmitScalarExpr(E->getArg(0));
BasicBlock *NotNan = createBasicBlock("fpclassify_not_nan", this->CurFn);
Builder.CreateCondBr(IsNan, End, NotNan);
Result->addIncoming(NanLiteral, NotZero);
// if (fabs(V) == infinity) return FP_INFINITY
Builder.SetInsertPoint(NotNan);
Value *VAbs = EmitFAbs(*this, V);
Value *IsInf =
Builder.CreateFCmpOEQ(VAbs, ConstantFP::getInfinity(V->getType()),
"isinf");
Value *InfLiteral = EmitScalarExpr(E->getArg(1));
BasicBlock *NotInf = createBasicBlock("fpclassify_not_inf", this->CurFn);
Builder.CreateCondBr(IsInf, End, NotInf);
Result->addIncoming(InfLiteral, NotNan);
// if (fabs(V) >= MIN_NORMAL) return FP_NORMAL else FP_SUBNORMAL
Builder.SetInsertPoint(NotInf);
APFloat Smallest = APFloat::getSmallestNormalized(
getContext().getFloatTypeSemantics(E->getArg(5)->getType()));
Value *IsNormal =
Builder.CreateFCmpUGE(VAbs, ConstantFP::get(V->getContext(), Smallest),
"isnormal");
Value *NormalResult =
Builder.CreateSelect(IsNormal, EmitScalarExpr(E->getArg(2)),
EmitScalarExpr(E->getArg(3)));
Builder.CreateBr(End);
Result->addIncoming(NormalResult, NotInf);
// return Result
Builder.SetInsertPoint(End);
return RValue::get(Result);
}
case Builtin::BIalloca:
case Builtin::BI_alloca:
case Builtin::BI__builtin_alloca: {
Value *Size = EmitScalarExpr(E->getArg(0));
return RValue::get(Builder.CreateAlloca(Builder.getInt8Ty(), Size));
}
case Builtin::BIbzero:
case Builtin::BI__builtin_bzero: {
Address Dest = EmitPointerWithAlignment(E->getArg(0));
Value *SizeVal = EmitScalarExpr(E->getArg(1));
EmitNonNullArgCheck(RValue::get(Dest.getPointer()), E->getArg(0)->getType(),
E->getArg(0)->getExprLoc(), FD, 0);
Builder.CreateMemSet(Dest, Builder.getInt8(0), SizeVal, false);
return RValue::get(Dest.getPointer());
}
case Builtin::BImemcpy:
case Builtin::BI__builtin_memcpy: {
Address Dest = EmitPointerWithAlignment(E->getArg(0));
Address Src = EmitPointerWithAlignment(E->getArg(1));
Value *SizeVal = EmitScalarExpr(E->getArg(2));
EmitNonNullArgCheck(RValue::get(Dest.getPointer()), E->getArg(0)->getType(),
E->getArg(0)->getExprLoc(), FD, 0);
EmitNonNullArgCheck(RValue::get(Src.getPointer()), E->getArg(1)->getType(),
E->getArg(1)->getExprLoc(), FD, 1);
Builder.CreateMemCpy(Dest, Src, SizeVal, false);
return RValue::get(Dest.getPointer());
}
case Builtin::BI__builtin___memcpy_chk: {
// fold __builtin_memcpy_chk(x, y, cst1, cst2) to memcpy iff cst1<=cst2.
llvm::APSInt Size, DstSize;
if (!E->getArg(2)->EvaluateAsInt(Size, CGM.getContext()) ||
!E->getArg(3)->EvaluateAsInt(DstSize, CGM.getContext()))
break;
if (Size.ugt(DstSize))
break;
Address Dest = EmitPointerWithAlignment(E->getArg(0));
Address Src = EmitPointerWithAlignment(E->getArg(1));
Value *SizeVal = llvm::ConstantInt::get(Builder.getContext(), Size);
Builder.CreateMemCpy(Dest, Src, SizeVal, false);
return RValue::get(Dest.getPointer());
}
case Builtin::BI__builtin_objc_memmove_collectable: {
Address DestAddr = EmitPointerWithAlignment(E->getArg(0));
Address SrcAddr = EmitPointerWithAlignment(E->getArg(1));
Value *SizeVal = EmitScalarExpr(E->getArg(2));
CGM.getObjCRuntime().EmitGCMemmoveCollectable(*this,
DestAddr, SrcAddr, SizeVal);
return RValue::get(DestAddr.getPointer());
}
case Builtin::BI__builtin___memmove_chk: {
// fold __builtin_memmove_chk(x, y, cst1, cst2) to memmove iff cst1<=cst2.
llvm::APSInt Size, DstSize;
if (!E->getArg(2)->EvaluateAsInt(Size, CGM.getContext()) ||
!E->getArg(3)->EvaluateAsInt(DstSize, CGM.getContext()))
break;
if (Size.ugt(DstSize))
break;
Address Dest = EmitPointerWithAlignment(E->getArg(0));
Address Src = EmitPointerWithAlignment(E->getArg(1));
Value *SizeVal = llvm::ConstantInt::get(Builder.getContext(), Size);
Builder.CreateMemMove(Dest, Src, SizeVal, false);
return RValue::get(Dest.getPointer());
}
case Builtin::BImemmove:
case Builtin::BI__builtin_memmove: {
Address Dest = EmitPointerWithAlignment(E->getArg(0));
Address Src = EmitPointerWithAlignment(E->getArg(1));
Value *SizeVal = EmitScalarExpr(E->getArg(2));
EmitNonNullArgCheck(RValue::get(Dest.getPointer()), E->getArg(0)->getType(),
E->getArg(0)->getExprLoc(), FD, 0);
EmitNonNullArgCheck(RValue::get(Src.getPointer()), E->getArg(1)->getType(),
E->getArg(1)->getExprLoc(), FD, 1);
Builder.CreateMemMove(Dest, Src, SizeVal, false);
return RValue::get(Dest.getPointer());
}
case Builtin::BImemset:
case Builtin::BI__builtin_memset: {
Address Dest = EmitPointerWithAlignment(E->getArg(0));
Value *ByteVal = Builder.CreateTrunc(EmitScalarExpr(E->getArg(1)),
Builder.getInt8Ty());
Value *SizeVal = EmitScalarExpr(E->getArg(2));
EmitNonNullArgCheck(RValue::get(Dest.getPointer()), E->getArg(0)->getType(),
E->getArg(0)->getExprLoc(), FD, 0);
Builder.CreateMemSet(Dest, ByteVal, SizeVal, false);
return RValue::get(Dest.getPointer());
}
case Builtin::BI__builtin___memset_chk: {
// fold __builtin_memset_chk(x, y, cst1, cst2) to memset iff cst1<=cst2.
llvm::APSInt Size, DstSize;
if (!E->getArg(2)->EvaluateAsInt(Size, CGM.getContext()) ||
!E->getArg(3)->EvaluateAsInt(DstSize, CGM.getContext()))
break;
if (Size.ugt(DstSize))
break;
Address Dest = EmitPointerWithAlignment(E->getArg(0));
Value *ByteVal = Builder.CreateTrunc(EmitScalarExpr(E->getArg(1)),
Builder.getInt8Ty());
Value *SizeVal = llvm::ConstantInt::get(Builder.getContext(), Size);
Builder.CreateMemSet(Dest, ByteVal, SizeVal, false);
return RValue::get(Dest.getPointer());
}
case Builtin::BI__builtin_dwarf_cfa: {
// The offset in bytes from the first argument to the CFA.
//
// Why on earth is this in the frontend? Is there any reason at
// all that the backend can't reasonably determine this while
// lowering llvm.eh.dwarf.cfa()?
//
// TODO: If there's a satisfactory reason, add a target hook for
// this instead of hard-coding 0, which is correct for most targets.
int32_t Offset = 0;
Value *F = CGM.getIntrinsic(Intrinsic::eh_dwarf_cfa);
return RValue::get(Builder.CreateCall(F,
llvm::ConstantInt::get(Int32Ty, Offset)));
}
case Builtin::BI__builtin_return_address: {
Value *Depth =
CGM.EmitConstantExpr(E->getArg(0), getContext().UnsignedIntTy, this);
Value *F = CGM.getIntrinsic(Intrinsic::returnaddress);
return RValue::get(Builder.CreateCall(F, Depth));
}
case Builtin::BI__builtin_frame_address: {
Value *Depth =
CGM.EmitConstantExpr(E->getArg(0), getContext().UnsignedIntTy, this);
Value *F = CGM.getIntrinsic(Intrinsic::frameaddress);
return RValue::get(Builder.CreateCall(F, Depth));
}
case Builtin::BI__builtin_extract_return_addr: {
Value *Address = EmitScalarExpr(E->getArg(0));
Value *Result = getTargetHooks().decodeReturnAddress(*this, Address);
return RValue::get(Result);
}
case Builtin::BI__builtin_frob_return_addr: {
Value *Address = EmitScalarExpr(E->getArg(0));
Value *Result = getTargetHooks().encodeReturnAddress(*this, Address);
return RValue::get(Result);
}
case Builtin::BI__builtin_dwarf_sp_column: {
llvm::IntegerType *Ty
= cast<llvm::IntegerType>(ConvertType(E->getType()));
int Column = getTargetHooks().getDwarfEHStackPointer(CGM);
if (Column == -1) {
CGM.ErrorUnsupported(E, "__builtin_dwarf_sp_column");
return RValue::get(llvm::UndefValue::get(Ty));
}
return RValue::get(llvm::ConstantInt::get(Ty, Column, true));
}
case Builtin::BI__builtin_init_dwarf_reg_size_table: {
Value *Address = EmitScalarExpr(E->getArg(0));
if (getTargetHooks().initDwarfEHRegSizeTable(*this, Address))
CGM.ErrorUnsupported(E, "__builtin_init_dwarf_reg_size_table");
return RValue::get(llvm::UndefValue::get(ConvertType(E->getType())));
}
case Builtin::BI__builtin_eh_return: {
Value *Int = EmitScalarExpr(E->getArg(0));
Value *Ptr = EmitScalarExpr(E->getArg(1));
llvm::IntegerType *IntTy = cast<llvm::IntegerType>(Int->getType());
assert((IntTy->getBitWidth() == 32 || IntTy->getBitWidth() == 64) &&
"LLVM's __builtin_eh_return only supports 32- and 64-bit variants");
Value *F = CGM.getIntrinsic(IntTy->getBitWidth() == 32
? Intrinsic::eh_return_i32
: Intrinsic::eh_return_i64);
Builder.CreateCall(F, {Int, Ptr});
Builder.CreateUnreachable();
// We do need to preserve an insertion point.
EmitBlock(createBasicBlock("builtin_eh_return.cont"));
return RValue::get(nullptr);
}
case Builtin::BI__builtin_unwind_init: {
Value *F = CGM.getIntrinsic(Intrinsic::eh_unwind_init);
return RValue::get(Builder.CreateCall(F));
}
case Builtin::BI__builtin_extend_pointer: {
// Extends a pointer to the size of an _Unwind_Word, which is
// uint64_t on all platforms. Generally this gets poked into a
// register and eventually used as an address, so if the
// addressing registers are wider than pointers and the platform
// doesn't implicitly ignore high-order bits when doing
// addressing, we need to make sure we zext / sext based on
// the platform's expectations.
//
// See: http://gcc.gnu.org/ml/gcc-bugs/2002-02/msg00237.html
// Cast the pointer to intptr_t.
Value *Ptr = EmitScalarExpr(E->getArg(0));
Value *Result = Builder.CreatePtrToInt(Ptr, IntPtrTy, "extend.cast");
// If that's 64 bits, we're done.
if (IntPtrTy->getBitWidth() == 64)
return RValue::get(Result);
// Otherwise, ask the codegen data what to do.
if (getTargetHooks().extendPointerWithSExt())
return RValue::get(Builder.CreateSExt(Result, Int64Ty, "extend.sext"));
else
return RValue::get(Builder.CreateZExt(Result, Int64Ty, "extend.zext"));
}
case Builtin::BI__builtin_setjmp: {
// Buffer is a void**.
Address Buf = EmitPointerWithAlignment(E->getArg(0));
// Store the frame pointer to the setjmp buffer.
Value *FrameAddr =
Builder.CreateCall(CGM.getIntrinsic(Intrinsic::frameaddress),
ConstantInt::get(Int32Ty, 0));
Builder.CreateStore(FrameAddr, Buf);
// Store the stack pointer to the setjmp buffer.
Value *StackAddr =
Builder.CreateCall(CGM.getIntrinsic(Intrinsic::stacksave));
Address StackSaveSlot =
Builder.CreateConstInBoundsGEP(Buf, 2, getPointerSize());
Builder.CreateStore(StackAddr, StackSaveSlot);
// Call LLVM's EH setjmp, which is lightweight.
Value *F = CGM.getIntrinsic(Intrinsic::eh_sjlj_setjmp);
Buf = Builder.CreateBitCast(Buf, Int8PtrTy);
return RValue::get(Builder.CreateCall(F, Buf.getPointer()));
}
case Builtin::BI__builtin_longjmp: {
Value *Buf = EmitScalarExpr(E->getArg(0));
Buf = Builder.CreateBitCast(Buf, Int8PtrTy);
// Call LLVM's EH longjmp, which is lightweight.
Builder.CreateCall(CGM.getIntrinsic(Intrinsic::eh_sjlj_longjmp), Buf);
// longjmp doesn't return; mark this as unreachable.
Builder.CreateUnreachable();
// We do need to preserve an insertion point.
EmitBlock(createBasicBlock("longjmp.cont"));
return RValue::get(nullptr);
}
case Builtin::BI__sync_fetch_and_add:
case Builtin::BI__sync_fetch_and_sub:
case Builtin::BI__sync_fetch_and_or:
case Builtin::BI__sync_fetch_and_and:
case Builtin::BI__sync_fetch_and_xor:
case Builtin::BI__sync_fetch_and_nand:
case Builtin::BI__sync_add_and_fetch:
case Builtin::BI__sync_sub_and_fetch:
case Builtin::BI__sync_and_and_fetch:
case Builtin::BI__sync_or_and_fetch:
case Builtin::BI__sync_xor_and_fetch:
case Builtin::BI__sync_nand_and_fetch:
case Builtin::BI__sync_val_compare_and_swap:
case Builtin::BI__sync_bool_compare_and_swap:
case Builtin::BI__sync_lock_test_and_set:
case Builtin::BI__sync_lock_release:
case Builtin::BI__sync_swap:
llvm_unreachable("Shouldn't make it through sema");
case Builtin::BI__sync_fetch_and_add_1:
case Builtin::BI__sync_fetch_and_add_2:
case Builtin::BI__sync_fetch_and_add_4:
case Builtin::BI__sync_fetch_and_add_8:
case Builtin::BI__sync_fetch_and_add_16:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Add, E);
case Builtin::BI__sync_fetch_and_sub_1:
case Builtin::BI__sync_fetch_and_sub_2:
case Builtin::BI__sync_fetch_and_sub_4:
case Builtin::BI__sync_fetch_and_sub_8:
case Builtin::BI__sync_fetch_and_sub_16:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Sub, E);
case Builtin::BI__sync_fetch_and_or_1:
case Builtin::BI__sync_fetch_and_or_2:
case Builtin::BI__sync_fetch_and_or_4:
case Builtin::BI__sync_fetch_and_or_8:
case Builtin::BI__sync_fetch_and_or_16:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Or, E);
case Builtin::BI__sync_fetch_and_and_1:
case Builtin::BI__sync_fetch_and_and_2:
case Builtin::BI__sync_fetch_and_and_4:
case Builtin::BI__sync_fetch_and_and_8:
case Builtin::BI__sync_fetch_and_and_16:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::And, E);
case Builtin::BI__sync_fetch_and_xor_1:
case Builtin::BI__sync_fetch_and_xor_2:
case Builtin::BI__sync_fetch_and_xor_4:
case Builtin::BI__sync_fetch_and_xor_8:
case Builtin::BI__sync_fetch_and_xor_16:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Xor, E);
case Builtin::BI__sync_fetch_and_nand_1:
case Builtin::BI__sync_fetch_and_nand_2:
case Builtin::BI__sync_fetch_and_nand_4:
case Builtin::BI__sync_fetch_and_nand_8:
case Builtin::BI__sync_fetch_and_nand_16:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Nand, E);
// Clang extensions: not overloaded yet.
case Builtin::BI__sync_fetch_and_min:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Min, E);
case Builtin::BI__sync_fetch_and_max:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Max, E);
case Builtin::BI__sync_fetch_and_umin:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::UMin, E);
case Builtin::BI__sync_fetch_and_umax:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::UMax, E);
case Builtin::BI__sync_add_and_fetch_1:
case Builtin::BI__sync_add_and_fetch_2:
case Builtin::BI__sync_add_and_fetch_4:
case Builtin::BI__sync_add_and_fetch_8:
case Builtin::BI__sync_add_and_fetch_16:
return EmitBinaryAtomicPost(*this, llvm::AtomicRMWInst::Add, E,
llvm::Instruction::Add);
case Builtin::BI__sync_sub_and_fetch_1:
case Builtin::BI__sync_sub_and_fetch_2:
case Builtin::BI__sync_sub_and_fetch_4:
case Builtin::BI__sync_sub_and_fetch_8:
case Builtin::BI__sync_sub_and_fetch_16:
return EmitBinaryAtomicPost(*this, llvm::AtomicRMWInst::Sub, E,
llvm::Instruction::Sub);
case Builtin::BI__sync_and_and_fetch_1:
case Builtin::BI__sync_and_and_fetch_2:
case Builtin::BI__sync_and_and_fetch_4:
case Builtin::BI__sync_and_and_fetch_8:
case Builtin::BI__sync_and_and_fetch_16:
return EmitBinaryAtomicPost(*this, llvm::AtomicRMWInst::And, E,
llvm::Instruction::And);
case Builtin::BI__sync_or_and_fetch_1:
case Builtin::BI__sync_or_and_fetch_2:
case Builtin::BI__sync_or_and_fetch_4:
case Builtin::BI__sync_or_and_fetch_8:
case Builtin::BI__sync_or_and_fetch_16:
return EmitBinaryAtomicPost(*this, llvm::AtomicRMWInst::Or, E,
llvm::Instruction::Or);
case Builtin::BI__sync_xor_and_fetch_1:
case Builtin::BI__sync_xor_and_fetch_2:
case Builtin::BI__sync_xor_and_fetch_4:
case Builtin::BI__sync_xor_and_fetch_8:
case Builtin::BI__sync_xor_and_fetch_16:
return EmitBinaryAtomicPost(*this, llvm::AtomicRMWInst::Xor, E,
llvm::Instruction::Xor);
case Builtin::BI__sync_nand_and_fetch_1:
case Builtin::BI__sync_nand_and_fetch_2:
case Builtin::BI__sync_nand_and_fetch_4:
case Builtin::BI__sync_nand_and_fetch_8:
case Builtin::BI__sync_nand_and_fetch_16:
return EmitBinaryAtomicPost(*this, llvm::AtomicRMWInst::Nand, E,
llvm::Instruction::And, true);
case Builtin::BI__sync_val_compare_and_swap_1:
case Builtin::BI__sync_val_compare_and_swap_2:
case Builtin::BI__sync_val_compare_and_swap_4:
case Builtin::BI__sync_val_compare_and_swap_8:
case Builtin::BI__sync_val_compare_and_swap_16:
return RValue::get(MakeAtomicCmpXchgValue(*this, E, false));
case Builtin::BI__sync_bool_compare_and_swap_1:
case Builtin::BI__sync_bool_compare_and_swap_2:
case Builtin::BI__sync_bool_compare_and_swap_4:
case Builtin::BI__sync_bool_compare_and_swap_8:
case Builtin::BI__sync_bool_compare_and_swap_16:
return RValue::get(MakeAtomicCmpXchgValue(*this, E, true));
case Builtin::BI__sync_swap_1:
case Builtin::BI__sync_swap_2:
case Builtin::BI__sync_swap_4:
case Builtin::BI__sync_swap_8:
case Builtin::BI__sync_swap_16:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Xchg, E);
case Builtin::BI__sync_lock_test_and_set_1:
case Builtin::BI__sync_lock_test_and_set_2:
case Builtin::BI__sync_lock_test_and_set_4:
case Builtin::BI__sync_lock_test_and_set_8:
case Builtin::BI__sync_lock_test_and_set_16:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Xchg, E);
case Builtin::BI__sync_lock_release_1:
case Builtin::BI__sync_lock_release_2:
case Builtin::BI__sync_lock_release_4:
case Builtin::BI__sync_lock_release_8:
case Builtin::BI__sync_lock_release_16: {
Value *Ptr = EmitScalarExpr(E->getArg(0));
QualType ElTy = E->getArg(0)->getType()->getPointeeType();
CharUnits StoreSize = getContext().getTypeSizeInChars(ElTy);
llvm::Type *ITy = llvm::IntegerType::get(getLLVMContext(),
StoreSize.getQuantity() * 8);
Ptr = Builder.CreateBitCast(Ptr, ITy->getPointerTo());
llvm::StoreInst *Store =
Builder.CreateAlignedStore(llvm::Constant::getNullValue(ITy), Ptr,
StoreSize);
Store->setAtomic(llvm::Release);
return RValue::get(nullptr);
}
case Builtin::BI__sync_synchronize: {
// We assume this is supposed to correspond to a C++0x-style
// sequentially-consistent fence (i.e. this is only usable for
// synchonization, not device I/O or anything like that). This intrinsic
// is really badly designed in the sense that in theory, there isn't
// any way to safely use it... but in practice, it mostly works
// to use it with non-atomic loads and stores to get acquire/release
// semantics.
Builder.CreateFence(llvm::SequentiallyConsistent);
return RValue::get(nullptr);
}
case Builtin::BI__builtin_nontemporal_load:
return RValue::get(EmitNontemporalLoad(*this, E));
case Builtin::BI__builtin_nontemporal_store:
return RValue::get(EmitNontemporalStore(*this, E));
case Builtin::BI__c11_atomic_is_lock_free:
case Builtin::BI__atomic_is_lock_free: {
// Call "bool __atomic_is_lock_free(size_t size, void *ptr)". For the
// __c11 builtin, ptr is 0 (indicating a properly-aligned object), since
// _Atomic(T) is always properly-aligned.
const char *LibCallName = "__atomic_is_lock_free";
CallArgList Args;
Args.add(RValue::get(EmitScalarExpr(E->getArg(0))),
getContext().getSizeType());
if (BuiltinID == Builtin::BI__atomic_is_lock_free)
Args.add(RValue::get(EmitScalarExpr(E->getArg(1))),
getContext().VoidPtrTy);
else
Args.add(RValue::get(llvm::Constant::getNullValue(VoidPtrTy)),
getContext().VoidPtrTy);
const CGFunctionInfo &FuncInfo =
CGM.getTypes().arrangeFreeFunctionCall(E->getType(), Args,
FunctionType::ExtInfo(),
RequiredArgs::All);
llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FuncInfo);
llvm::Constant *Func = CGM.CreateRuntimeFunction(FTy, LibCallName);
return EmitCall(FuncInfo, Func, ReturnValueSlot(), Args);
}
case Builtin::BI__atomic_test_and_set: {
// Look at the argument type to determine whether this is a volatile
// operation. The parameter type is always volatile.
QualType PtrTy = E->getArg(0)->IgnoreImpCasts()->getType();
bool Volatile =
PtrTy->castAs<PointerType>()->getPointeeType().isVolatileQualified();
Value *Ptr = EmitScalarExpr(E->getArg(0));
unsigned AddrSpace = Ptr->getType()->getPointerAddressSpace();
Ptr = Builder.CreateBitCast(Ptr, Int8Ty->getPointerTo(AddrSpace));
Value *NewVal = Builder.getInt8(1);
Value *Order = EmitScalarExpr(E->getArg(1));
if (isa<llvm::ConstantInt>(Order)) {
int ord = cast<llvm::ConstantInt>(Order)->getZExtValue();
AtomicRMWInst *Result = nullptr;
switch (ord) {
case 0: // memory_order_relaxed
default: // invalid order
Result = Builder.CreateAtomicRMW(llvm::AtomicRMWInst::Xchg,
Ptr, NewVal,
llvm::Monotonic);
break;
case 1: // memory_order_consume
case 2: // memory_order_acquire
Result = Builder.CreateAtomicRMW(llvm::AtomicRMWInst::Xchg,
Ptr, NewVal,
llvm::Acquire);
break;
case 3: // memory_order_release
Result = Builder.CreateAtomicRMW(llvm::AtomicRMWInst::Xchg,
Ptr, NewVal,
llvm::Release);
break;
case 4: // memory_order_acq_rel
Result = Builder.CreateAtomicRMW(llvm::AtomicRMWInst::Xchg,
Ptr, NewVal,
llvm::AcquireRelease);
break;
case 5: // memory_order_seq_cst
Result = Builder.CreateAtomicRMW(llvm::AtomicRMWInst::Xchg,
Ptr, NewVal,
llvm::SequentiallyConsistent);
break;
}
Result->setVolatile(Volatile);
return RValue::get(Builder.CreateIsNotNull(Result, "tobool"));
}
llvm::BasicBlock *ContBB = createBasicBlock("atomic.continue", CurFn);
llvm::BasicBlock *BBs[5] = {
createBasicBlock("monotonic", CurFn),
createBasicBlock("acquire", CurFn),
createBasicBlock("release", CurFn),
createBasicBlock("acqrel", CurFn),
createBasicBlock("seqcst", CurFn)
};
llvm::AtomicOrdering Orders[5] = {
llvm::Monotonic, llvm::Acquire, llvm::Release,
llvm::AcquireRelease, llvm::SequentiallyConsistent
};
Order = Builder.CreateIntCast(Order, Builder.getInt32Ty(), false);
llvm::SwitchInst *SI = Builder.CreateSwitch(Order, BBs[0]);
Builder.SetInsertPoint(ContBB);
PHINode *Result = Builder.CreatePHI(Int8Ty, 5, "was_set");
for (unsigned i = 0; i < 5; ++i) {
Builder.SetInsertPoint(BBs[i]);
AtomicRMWInst *RMW = Builder.CreateAtomicRMW(llvm::AtomicRMWInst::Xchg,
Ptr, NewVal, Orders[i]);
RMW->setVolatile(Volatile);
Result->addIncoming(RMW, BBs[i]);
Builder.CreateBr(ContBB);
}
SI->addCase(Builder.getInt32(0), BBs[0]);
SI->addCase(Builder.getInt32(1), BBs[1]);
SI->addCase(Builder.getInt32(2), BBs[1]);
SI->addCase(Builder.getInt32(3), BBs[2]);
SI->addCase(Builder.getInt32(4), BBs[3]);
SI->addCase(Builder.getInt32(5), BBs[4]);
Builder.SetInsertPoint(ContBB);
return RValue::get(Builder.CreateIsNotNull(Result, "tobool"));
}
case Builtin::BI__atomic_clear: {
QualType PtrTy = E->getArg(0)->IgnoreImpCasts()->getType();
bool Volatile =
PtrTy->castAs<PointerType>()->getPointeeType().isVolatileQualified();
Address Ptr = EmitPointerWithAlignment(E->getArg(0));
unsigned AddrSpace = Ptr.getPointer()->getType()->getPointerAddressSpace();
Ptr = Builder.CreateBitCast(Ptr, Int8Ty->getPointerTo(AddrSpace));
Value *NewVal = Builder.getInt8(0);
Value *Order = EmitScalarExpr(E->getArg(1));
if (isa<llvm::ConstantInt>(Order)) {
int ord = cast<llvm::ConstantInt>(Order)->getZExtValue();
StoreInst *Store = Builder.CreateStore(NewVal, Ptr, Volatile);
switch (ord) {
case 0: // memory_order_relaxed
default: // invalid order
Store->setOrdering(llvm::Monotonic);
break;
case 3: // memory_order_release
Store->setOrdering(llvm::Release);
break;
case 5: // memory_order_seq_cst
Store->setOrdering(llvm::SequentiallyConsistent);
break;
}
return RValue::get(nullptr);
}
llvm::BasicBlock *ContBB = createBasicBlock("atomic.continue", CurFn);
llvm::BasicBlock *BBs[3] = {
createBasicBlock("monotonic", CurFn),
createBasicBlock("release", CurFn),
createBasicBlock("seqcst", CurFn)
};
llvm::AtomicOrdering Orders[3] = {
llvm::Monotonic, llvm::Release, llvm::SequentiallyConsistent
};
Order = Builder.CreateIntCast(Order, Builder.getInt32Ty(), false);
llvm::SwitchInst *SI = Builder.CreateSwitch(Order, BBs[0]);
for (unsigned i = 0; i < 3; ++i) {
Builder.SetInsertPoint(BBs[i]);
StoreInst *Store = Builder.CreateStore(NewVal, Ptr, Volatile);
Store->setOrdering(Orders[i]);
Builder.CreateBr(ContBB);
}
SI->addCase(Builder.getInt32(0), BBs[0]);
SI->addCase(Builder.getInt32(3), BBs[1]);
SI->addCase(Builder.getInt32(5), BBs[2]);
Builder.SetInsertPoint(ContBB);
return RValue::get(nullptr);
}
case Builtin::BI__atomic_thread_fence:
case Builtin::BI__atomic_signal_fence:
case Builtin::BI__c11_atomic_thread_fence:
case Builtin::BI__c11_atomic_signal_fence: {
llvm::SynchronizationScope Scope;
if (BuiltinID == Builtin::BI__atomic_signal_fence ||
BuiltinID == Builtin::BI__c11_atomic_signal_fence)
Scope = llvm::SingleThread;
else
Scope = llvm::CrossThread;
Value *Order = EmitScalarExpr(E->getArg(0));
if (isa<llvm::ConstantInt>(Order)) {
int ord = cast<llvm::ConstantInt>(Order)->getZExtValue();
switch (ord) {
case 0: // memory_order_relaxed
default: // invalid order
break;
case 1: // memory_order_consume
case 2: // memory_order_acquire
Builder.CreateFence(llvm::Acquire, Scope);
break;
case 3: // memory_order_release
Builder.CreateFence(llvm::Release, Scope);
break;
case 4: // memory_order_acq_rel
Builder.CreateFence(llvm::AcquireRelease, Scope);
break;
case 5: // memory_order_seq_cst
Builder.CreateFence(llvm::SequentiallyConsistent, Scope);
break;
}
return RValue::get(nullptr);
}
llvm::BasicBlock *AcquireBB, *ReleaseBB, *AcqRelBB, *SeqCstBB;
AcquireBB = createBasicBlock("acquire", CurFn);
ReleaseBB = createBasicBlock("release", CurFn);
AcqRelBB = createBasicBlock("acqrel", CurFn);
SeqCstBB = createBasicBlock("seqcst", CurFn);
llvm::BasicBlock *ContBB = createBasicBlock("atomic.continue", CurFn);
Order = Builder.CreateIntCast(Order, Builder.getInt32Ty(), false);
llvm::SwitchInst *SI = Builder.CreateSwitch(Order, ContBB);
Builder.SetInsertPoint(AcquireBB);
Builder.CreateFence(llvm::Acquire, Scope);
Builder.CreateBr(ContBB);
SI->addCase(Builder.getInt32(1), AcquireBB);
SI->addCase(Builder.getInt32(2), AcquireBB);
Builder.SetInsertPoint(ReleaseBB);
Builder.CreateFence(llvm::Release, Scope);
Builder.CreateBr(ContBB);
SI->addCase(Builder.getInt32(3), ReleaseBB);
Builder.SetInsertPoint(AcqRelBB);
Builder.CreateFence(llvm::AcquireRelease, Scope);
Builder.CreateBr(ContBB);
SI->addCase(Builder.getInt32(4), AcqRelBB);
Builder.SetInsertPoint(SeqCstBB);
Builder.CreateFence(llvm::SequentiallyConsistent, Scope);
Builder.CreateBr(ContBB);
SI->addCase(Builder.getInt32(5), SeqCstBB);
Builder.SetInsertPoint(ContBB);
return RValue::get(nullptr);
}
// Library functions with special handling.
case Builtin::BIsqrt:
case Builtin::BIsqrtf:
case Builtin::BIsqrtl: {
// Transform a call to sqrt* into a @llvm.sqrt.* intrinsic call, but only
// in finite- or unsafe-math mode (the intrinsic has different semantics
// for handling negative numbers compared to the library function, so
// -fmath-errno=0 is not enough).
if (!FD->hasAttr<ConstAttr>())
break;
if (!(CGM.getCodeGenOpts().UnsafeFPMath ||
CGM.getCodeGenOpts().NoNaNsFPMath))
break;
Value *Arg0 = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = Arg0->getType();
Value *F = CGM.getIntrinsic(Intrinsic::sqrt, ArgType);
return RValue::get(Builder.CreateCall(F, Arg0));
}
case Builtin::BI__builtin_pow:
case Builtin::BI__builtin_powf:
case Builtin::BI__builtin_powl:
case Builtin::BIpow:
case Builtin::BIpowf:
case Builtin::BIpowl: {
// Transform a call to pow* into a @llvm.pow.* intrinsic call.
if (!FD->hasAttr<ConstAttr>())
break;
Value *Base = EmitScalarExpr(E->getArg(0));
Value *Exponent = EmitScalarExpr(E->getArg(1));
llvm::Type *ArgType = Base->getType();
Value *F = CGM.getIntrinsic(Intrinsic::pow, ArgType);
return RValue::get(Builder.CreateCall(F, {Base, Exponent}));
}
case Builtin::BIfma:
case Builtin::BIfmaf:
case Builtin::BIfmal:
case Builtin::BI__builtin_fma:
case Builtin::BI__builtin_fmaf:
case Builtin::BI__builtin_fmal: {
// Rewrite fma to intrinsic.
Value *FirstArg = EmitScalarExpr(E->getArg(0));
llvm::Type *ArgType = FirstArg->getType();
Value *F = CGM.getIntrinsic(Intrinsic::fma, ArgType);
return RValue::get(
Builder.CreateCall(F, {FirstArg, EmitScalarExpr(E->getArg(1)),
EmitScalarExpr(E->getArg(2))}));
}
case Builtin::BI__builtin_signbit:
case Builtin::BI__builtin_signbitf:
case Builtin::BI__builtin_signbitl: {
return RValue::get(
Builder.CreateZExt(EmitSignBit(*this, EmitScalarExpr(E->getArg(0))),
ConvertType(E->getType())));
}
case Builtin::BI__builtin_annotation: {
llvm::Value *AnnVal = EmitScalarExpr(E->getArg(0));
llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::annotation,
AnnVal->getType());
// Get the annotation string, go through casts. Sema requires this to be a
// non-wide string literal, potentially casted, so the cast<> is safe.
const Expr *AnnotationStrExpr = E->getArg(1)->IgnoreParenCasts();
StringRef Str = cast<StringLiteral>(AnnotationStrExpr)->getString();
return RValue::get(EmitAnnotationCall(F, AnnVal, Str, E->getExprLoc()));
}
case Builtin::BI__builtin_addcb:
case Builtin::BI__builtin_addcs:
case Builtin::BI__builtin_addc:
case Builtin::BI__builtin_addcl:
case Builtin::BI__builtin_addcll:
case Builtin::BI__builtin_subcb:
case Builtin::BI__builtin_subcs:
case Builtin::BI__builtin_subc:
case Builtin::BI__builtin_subcl:
case Builtin::BI__builtin_subcll: {
// We translate all of these builtins from expressions of the form:
// int x = ..., y = ..., carryin = ..., carryout, result;
// result = __builtin_addc(x, y, carryin, &carryout);
//
// to LLVM IR of the form:
//
// %tmp1 = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %x, i32 %y)
// %tmpsum1 = extractvalue {i32, i1} %tmp1, 0
// %carry1 = extractvalue {i32, i1} %tmp1, 1
// %tmp2 = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %tmpsum1,
// i32 %carryin)
// %result = extractvalue {i32, i1} %tmp2, 0
// %carry2 = extractvalue {i32, i1} %tmp2, 1
// %tmp3 = or i1 %carry1, %carry2
// %tmp4 = zext i1 %tmp3 to i32
// store i32 %tmp4, i32* %carryout
// Scalarize our inputs.
llvm::Value *X = EmitScalarExpr(E->getArg(0));
llvm::Value *Y = EmitScalarExpr(E->getArg(1));
llvm::Value *Carryin = EmitScalarExpr(E->getArg(2));
Address CarryOutPtr = EmitPointerWithAlignment(E->getArg(3));
// Decide if we are lowering to a uadd.with.overflow or usub.with.overflow.
llvm::Intrinsic::ID IntrinsicId;
switch (BuiltinID) {
default: llvm_unreachable("Unknown multiprecision builtin id.");
case Builtin::BI__builtin_addcb:
case Builtin::BI__builtin_addcs:
case Builtin::BI__builtin_addc:
case Builtin::BI__builtin_addcl:
case Builtin::BI__builtin_addcll:
IntrinsicId = llvm::Intrinsic::uadd_with_overflow;
break;
case Builtin::BI__builtin_subcb:
case Builtin::BI__builtin_subcs:
case Builtin::BI__builtin_subc:
case Builtin::BI__builtin_subcl:
case Builtin::BI__builtin_subcll:
IntrinsicId = llvm::Intrinsic::usub_with_overflow;
break;
}
// Construct our resulting LLVM IR expression.
llvm::Value *Carry1;
llvm::Value *Sum1 = EmitOverflowIntrinsic(*this, IntrinsicId,
X, Y, Carry1);
llvm::Value *Carry2;
llvm::Value *Sum2 = EmitOverflowIntrinsic(*this, IntrinsicId,
Sum1, Carryin, Carry2);
llvm::Value *CarryOut = Builder.CreateZExt(Builder.CreateOr(Carry1, Carry2),
X->getType());
Builder.CreateStore(CarryOut, CarryOutPtr);
return RValue::get(Sum2);
}
case Builtin::BI__builtin_add_overflow:
case Builtin::BI__builtin_sub_overflow:
case Builtin::BI__builtin_mul_overflow: {
const clang::Expr *LeftArg = E->getArg(0);
const clang::Expr *RightArg = E->getArg(1);
const clang::Expr *ResultArg = E->getArg(2);
clang::QualType ResultQTy =
ResultArg->getType()->castAs<PointerType>()->getPointeeType();
WidthAndSignedness LeftInfo =
getIntegerWidthAndSignedness(CGM.getContext(), LeftArg->getType());
WidthAndSignedness RightInfo =
getIntegerWidthAndSignedness(CGM.getContext(), RightArg->getType());
WidthAndSignedness ResultInfo =
getIntegerWidthAndSignedness(CGM.getContext(), ResultQTy);
WidthAndSignedness EncompassingInfo =
EncompassingIntegerType({LeftInfo, RightInfo, ResultInfo});
llvm::Type *EncompassingLLVMTy =
llvm::IntegerType::get(CGM.getLLVMContext(), EncompassingInfo.Width);
llvm::Type *ResultLLVMTy = CGM.getTypes().ConvertType(ResultQTy);
llvm::Intrinsic::ID IntrinsicId;
switch (BuiltinID) {
default:
llvm_unreachable("Unknown overflow builtin id.");
case Builtin::BI__builtin_add_overflow:
IntrinsicId = EncompassingInfo.Signed
? llvm::Intrinsic::sadd_with_overflow
: llvm::Intrinsic::uadd_with_overflow;
break;
case Builtin::BI__builtin_sub_overflow:
IntrinsicId = EncompassingInfo.Signed
? llvm::Intrinsic::ssub_with_overflow
: llvm::Intrinsic::usub_with_overflow;
break;
case Builtin::BI__builtin_mul_overflow:
IntrinsicId = EncompassingInfo.Signed
? llvm::Intrinsic::smul_with_overflow
: llvm::Intrinsic::umul_with_overflow;
break;
}
llvm::Value *Left = EmitScalarExpr(LeftArg);
llvm::Value *Right = EmitScalarExpr(RightArg);
Address ResultPtr = EmitPointerWithAlignment(ResultArg);
// Extend each operand to the encompassing type.
Left = Builder.CreateIntCast(Left, EncompassingLLVMTy, LeftInfo.Signed);
Right = Builder.CreateIntCast(Right, EncompassingLLVMTy, RightInfo.Signed);
// Perform the operation on the extended values.
llvm::Value *Overflow, *Result;
Result = EmitOverflowIntrinsic(*this, IntrinsicId, Left, Right, Overflow);
if (EncompassingInfo.Width > ResultInfo.Width) {
// The encompassing type is wider than the result type, so we need to
// truncate it.
llvm::Value *ResultTrunc = Builder.CreateTrunc(Result, ResultLLVMTy);
// To see if the truncation caused an overflow, we will extend
// the result and then compare it to the original result.
llvm::Value *ResultTruncExt = Builder.CreateIntCast(
ResultTrunc, EncompassingLLVMTy, ResultInfo.Signed);
llvm::Value *TruncationOverflow =
Builder.CreateICmpNE(Result, ResultTruncExt);
Overflow = Builder.CreateOr(Overflow, TruncationOverflow);
Result = ResultTrunc;
}
// Finally, store the result using the pointer.
bool isVolatile =
ResultArg->getType()->getPointeeType().isVolatileQualified();
Builder.CreateStore(EmitToMemory(Result, ResultQTy), ResultPtr, isVolatile);
return RValue::get(Overflow);
}
case Builtin::BI__builtin_uadd_overflow:
case Builtin::BI__builtin_uaddl_overflow:
case Builtin::BI__builtin_uaddll_overflow:
case Builtin::BI__builtin_usub_overflow:
case Builtin::BI__builtin_usubl_overflow:
case Builtin::BI__builtin_usubll_overflow:
case Builtin::BI__builtin_umul_overflow:
case Builtin::BI__builtin_umull_overflow:
case Builtin::BI__builtin_umulll_overflow:
case Builtin::BI__builtin_sadd_overflow:
case Builtin::BI__builtin_saddl_overflow:
case Builtin::BI__builtin_saddll_overflow:
case Builtin::BI__builtin_ssub_overflow:
case Builtin::BI__builtin_ssubl_overflow:
case Builtin::BI__builtin_ssubll_overflow:
case Builtin::BI__builtin_smul_overflow:
case Builtin::BI__builtin_smull_overflow:
case Builtin::BI__builtin_smulll_overflow: {
// We translate all of these builtins directly to the relevant llvm IR node.
// Scalarize our inputs.
llvm::Value *X = EmitScalarExpr(E->getArg(0));
llvm::Value *Y = EmitScalarExpr(E->getArg(1));
Address SumOutPtr = EmitPointerWithAlignment(E->getArg(2));
// Decide which of the overflow intrinsics we are lowering to:
llvm::Intrinsic::ID IntrinsicId;
switch (BuiltinID) {
default: llvm_unreachable("Unknown overflow builtin id.");
case Builtin::BI__builtin_uadd_overflow:
case Builtin::BI__builtin_uaddl_overflow:
case Builtin::BI__builtin_uaddll_overflow:
IntrinsicId = llvm::Intrinsic::uadd_with_overflow;
break;
case Builtin::BI__builtin_usub_overflow:
case Builtin::BI__builtin_usubl_overflow:
case Builtin::BI__builtin_usubll_overflow:
IntrinsicId = llvm::Intrinsic::usub_with_overflow;
break;
case Builtin::BI__builtin_umul_overflow:
case Builtin::BI__builtin_umull_overflow:
case Builtin::BI__builtin_umulll_overflow:
IntrinsicId = llvm::Intrinsic::umul_with_overflow;
break;
case Builtin::BI__builtin_sadd_overflow:
case Builtin::BI__builtin_saddl_overflow:
case Builtin::BI__builtin_saddll_overflow:
IntrinsicId = llvm::Intrinsic::sadd_with_overflow;
break;
case Builtin::BI__builtin_ssub_overflow:
case Builtin::BI__builtin_ssubl_overflow:
case Builtin::BI__builtin_ssubll_overflow:
IntrinsicId = llvm::Intrinsic::ssub_with_overflow;
break;
case Builtin::BI__builtin_smul_overflow:
case Builtin::BI__builtin_smull_overflow:
case Builtin::BI__builtin_smulll_overflow:
IntrinsicId = llvm::Intrinsic::smul_with_overflow;
break;
}
llvm::Value *Carry;
llvm::Value *Sum = EmitOverflowIntrinsic(*this, IntrinsicId, X, Y, Carry);
Builder.CreateStore(Sum, SumOutPtr);
return RValue::get(Carry);
}
case Builtin::BI__builtin_addressof:
return RValue::get(EmitLValue(E->getArg(0)).getPointer());
case Builtin::BI__builtin_operator_new:
return EmitBuiltinNewDeleteCall(FD->getType()->castAs<FunctionProtoType>(),
E->getArg(0), false);
case Builtin::BI__builtin_operator_delete:
return EmitBuiltinNewDeleteCall(FD->getType()->castAs<FunctionProtoType>(),
E->getArg(0), true);
case Builtin::BI__noop:
// __noop always evaluates to an integer literal zero.
return RValue::get(ConstantInt::get(IntTy, 0));
case Builtin::BI__builtin_call_with_static_chain: {
const CallExpr *Call = cast<CallExpr>(E->getArg(0));
const Expr *Chain = E->getArg(1);
return EmitCall(Call->getCallee()->getType(),
EmitScalarExpr(Call->getCallee()), Call, ReturnValue,
Call->getCalleeDecl(), EmitScalarExpr(Chain));
}
case Builtin::BI_InterlockedExchange:
case Builtin::BI_InterlockedExchangePointer:
return EmitBinaryAtomic(*this, llvm::AtomicRMWInst::Xchg, E);
case Builtin::BI_InterlockedCompareExchangePointer: {
llvm::Type *RTy;
llvm::IntegerType *IntType =
IntegerType::get(getLLVMContext(),
getContext().getTypeSize(E->getType()));
llvm::Type *IntPtrType = IntType->getPointerTo();
llvm::Value *Destination =
Builder.CreateBitCast(EmitScalarExpr(E->getArg(0)), IntPtrType);
llvm::Value *Exchange = EmitScalarExpr(E->getArg(1));
RTy = Exchange->getType();
Exchange = Builder.CreatePtrToInt(Exchange, IntType);
llvm::Value *Comparand =
Builder.CreatePtrToInt(EmitScalarExpr(E->getArg(2)), IntType);
auto Result = Builder.CreateAtomicCmpXchg(Destination, Comparand, Exchange,
SequentiallyConsistent,
SequentiallyConsistent);
Result->setVolatile(true);
return RValue::get(Builder.CreateIntToPtr(Builder.CreateExtractValue(Result,
0),
RTy));
}
case Builtin::BI_InterlockedCompareExchange: {
AtomicCmpXchgInst *CXI = Builder.CreateAtomicCmpXchg(
EmitScalarExpr(E->getArg(0)),
EmitScalarExpr(E->getArg(2)),
EmitScalarExpr(E->getArg(1)),
SequentiallyConsistent,
SequentiallyConsistent);
CXI->setVolatile(true);
return RValue::get(Builder.CreateExtractValue(CXI, 0));
}
case Builtin::BI_InterlockedIncrement: {
AtomicRMWInst *RMWI = Builder.CreateAtomicRMW(
AtomicRMWInst::Add,
EmitScalarExpr(E->getArg(0)),
ConstantInt::get(Int32Ty, 1),
llvm::SequentiallyConsistent);
RMWI->setVolatile(true);
return RValue::get(Builder.CreateAdd(RMWI, ConstantInt::get(Int32Ty, 1)));
}
case Builtin::BI_InterlockedDecrement: {
AtomicRMWInst *RMWI = Builder.CreateAtomicRMW(
AtomicRMWInst::Sub,
EmitScalarExpr(E->getArg(0)),
ConstantInt::get(Int32Ty, 1),
llvm::SequentiallyConsistent);
RMWI->setVolatile(true);
return RValue::get(Builder.CreateSub(RMWI, ConstantInt::get(Int32Ty, 1)));
}
case Builtin::BI_InterlockedExchangeAdd: {
AtomicRMWInst *RMWI = Builder.CreateAtomicRMW(
AtomicRMWInst::Add,
EmitScalarExpr(E->getArg(0)),
EmitScalarExpr(E->getArg(1)),
llvm::SequentiallyConsistent);
RMWI->setVolatile(true);
return RValue::get(RMWI);
}
case Builtin::BI__readfsdword: {
Value *IntToPtr =
Builder.CreateIntToPtr(EmitScalarExpr(E->getArg(0)),
llvm::PointerType::get(CGM.Int32Ty, 257));
LoadInst *Load =
Builder.CreateAlignedLoad(IntToPtr, /*Align=*/4, /*isVolatile=*/true);
return RValue::get(Load);
}
case Builtin::BI__exception_code:
case Builtin::BI_exception_code:
return RValue::get(EmitSEHExceptionCode());
case Builtin::BI__exception_info:
case Builtin::BI_exception_info:
return RValue::get(EmitSEHExceptionInfo());
case Builtin::BI__abnormal_termination:
case Builtin::BI_abnormal_termination:
return RValue::get(EmitSEHAbnormalTermination());
case Builtin::BI_setjmpex: {
if (getTarget().getTriple().isOSMSVCRT()) {
llvm::Type *ArgTypes[] = {Int8PtrTy, Int8PtrTy};
llvm::AttributeSet ReturnsTwiceAttr =
AttributeSet::get(getLLVMContext(), llvm::AttributeSet::FunctionIndex,
llvm::Attribute::ReturnsTwice);
llvm::Constant *SetJmpEx = CGM.CreateRuntimeFunction(
llvm::FunctionType::get(IntTy, ArgTypes, /*isVarArg=*/false),
"_setjmpex", ReturnsTwiceAttr);
llvm::Value *Buf = Builder.CreateBitOrPointerCast(
EmitScalarExpr(E->getArg(0)), Int8PtrTy);
llvm::Value *FrameAddr =
Builder.CreateCall(CGM.getIntrinsic(Intrinsic::frameaddress),
ConstantInt::get(Int32Ty, 0));
llvm::Value *Args[] = {Buf, FrameAddr};
llvm::CallSite CS = EmitRuntimeCallOrInvoke(SetJmpEx, Args);
CS.setAttributes(ReturnsTwiceAttr);
return RValue::get(CS.getInstruction());
}
break;
}
case Builtin::BI_setjmp: {
if (getTarget().getTriple().isOSMSVCRT()) {
llvm::AttributeSet ReturnsTwiceAttr =
AttributeSet::get(getLLVMContext(), llvm::AttributeSet::FunctionIndex,
llvm::Attribute::ReturnsTwice);
llvm::Value *Buf = Builder.CreateBitOrPointerCast(
EmitScalarExpr(E->getArg(0)), Int8PtrTy);
llvm::CallSite CS;
if (getTarget().getTriple().getArch() == llvm::Triple::x86) {
llvm::Type *ArgTypes[] = {Int8PtrTy, IntTy};
llvm::Constant *SetJmp3 = CGM.CreateRuntimeFunction(
llvm::FunctionType::get(IntTy, ArgTypes, /*isVarArg=*/true),
"_setjmp3", ReturnsTwiceAttr);
llvm::Value *Count = ConstantInt::get(IntTy, 0);
llvm::Value *Args[] = {Buf, Count};
CS = EmitRuntimeCallOrInvoke(SetJmp3, Args);
} else {
llvm::Type *ArgTypes[] = {Int8PtrTy, Int8PtrTy};
llvm::Constant *SetJmp = CGM.CreateRuntimeFunction(
llvm::FunctionType::get(IntTy, ArgTypes, /*isVarArg=*/false),
"_setjmp", ReturnsTwiceAttr);
llvm::Value *FrameAddr =
Builder.CreateCall(CGM.getIntrinsic(Intrinsic::frameaddress),
ConstantInt::get(Int32Ty, 0));
llvm::Value *Args[] = {Buf, FrameAddr};
CS = EmitRuntimeCallOrInvoke(SetJmp, Args);
}
CS.setAttributes(ReturnsTwiceAttr);
return RValue::get(CS.getInstruction());
}
break;
}
case Builtin::BI__GetExceptionInfo: {
if (llvm::GlobalVariable *GV =
CGM.getCXXABI().getThrowInfo(FD->getParamDecl(0)->getType()))
return RValue::get(llvm::ConstantExpr::getBitCast(GV, CGM.Int8PtrTy));
break;
}
}
// If this is an alias for a lib function (e.g. __builtin_sin), emit
// the call using the normal call path, but using the unmangled
// version of the function name.
if (getContext().BuiltinInfo.isLibFunction(BuiltinID))
return emitLibraryCall(*this, FD, E,
CGM.getBuiltinLibFunction(FD, BuiltinID));
// If this is a predefined lib function (e.g. malloc), emit the call
// using exactly the normal call path.
if (getContext().BuiltinInfo.isPredefinedLibFunction(BuiltinID))
return emitLibraryCall(*this, FD, E, EmitScalarExpr(E->getCallee()));
// Check that a call to a target specific builtin has the correct target
// features.
// This is down here to avoid non-target specific builtins, however, if
// generic builtins start to require generic target features then we
// can move this up to the beginning of the function.
checkTargetFeatures(E, FD);
// See if we have a target specific intrinsic.
const char *Name = getContext().BuiltinInfo.getName(BuiltinID);
Intrinsic::ID IntrinsicID = Intrinsic::not_intrinsic;
if (const char *Prefix =
llvm::Triple::getArchTypePrefix(getTarget().getTriple().getArch())) {
IntrinsicID = Intrinsic::getIntrinsicForGCCBuiltin(Prefix, Name);
// NOTE we dont need to perform a compatibility flag check here since the
// intrinsics are declared in Builtins*.def via LANGBUILTIN which filter the
// MS builtins via ALL_MS_LANGUAGES and are filtered earlier.
if (IntrinsicID == Intrinsic::not_intrinsic)
IntrinsicID = Intrinsic::getIntrinsicForMSBuiltin(Prefix, Name);
}
if (IntrinsicID != Intrinsic::not_intrinsic) {
SmallVector<Value*, 16> Args;
// Find out if any arguments are required to be integer constant
// expressions.
unsigned ICEArguments = 0;
ASTContext::GetBuiltinTypeError Error;
getContext().GetBuiltinType(BuiltinID, Error, &ICEArguments);
assert(Error == ASTContext::GE_None && "Should not codegen an error");
Function *F = CGM.getIntrinsic(IntrinsicID);
llvm::FunctionType *FTy = F->getFunctionType();
for (unsigned i = 0, e = E->getNumArgs(); i != e; ++i) {
Value *ArgValue;
// If this is a normal argument, just emit it as a scalar.
if ((ICEArguments & (1 << i)) == 0) {
ArgValue = EmitScalarExpr(E->getArg(i));
} else {
// If this is required to be a constant, constant fold it so that we
// know that the generated intrinsic gets a ConstantInt.
llvm::APSInt Result;
bool IsConst = E->getArg(i)->isIntegerConstantExpr(Result,getContext());
assert(IsConst && "Constant arg isn't actually constant?");
(void)IsConst;
ArgValue = llvm::ConstantInt::get(getLLVMContext(), Result);
}
// If the intrinsic arg type is different from the builtin arg type
// we need to do a bit cast.
llvm::Type *PTy = FTy->getParamType(i);
if (PTy != ArgValue->getType()) {
assert(PTy->canLosslesslyBitCastTo(FTy->getParamType(i)) &&
"Must be able to losslessly bit cast to param");
ArgValue = Builder.CreateBitCast(ArgValue, PTy);
}
Args.push_back(ArgValue);
}
Value *V = Builder.CreateCall(F, Args);
QualType BuiltinRetType = E->getType();
llvm::Type *RetTy = VoidTy;
if (!BuiltinRetType->isVoidType())
RetTy = ConvertType(BuiltinRetType);
if (RetTy != V->getType()) {
assert(V->getType()->canLosslesslyBitCastTo(RetTy) &&
"Must be able to losslessly bit cast result type");
V = Builder.CreateBitCast(V, RetTy);
}
return RValue::get(V);
}
// See if we have a target specific builtin that needs to be lowered.
if (Value *V = EmitTargetBuiltinExpr(BuiltinID, E))
return RValue::get(V);
ErrorUnsupported(E, "builtin function");
// Unknown builtin, for now just dump it out and return undef.
return GetUndefRValue(E->getType());
}
static Value *EmitTargetArchBuiltinExpr(CodeGenFunction *CGF,
unsigned BuiltinID, const CallExpr *E,
llvm::Triple::ArchType Arch) {
switch (Arch) {
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
return CGF->EmitARMBuiltinExpr(BuiltinID, E);
case llvm::Triple::aarch64:
case llvm::Triple::aarch64_be:
return CGF->EmitAArch64BuiltinExpr(BuiltinID, E);
case llvm::Triple::x86:
case llvm::Triple::x86_64:
return CGF->EmitX86BuiltinExpr(BuiltinID, E);
case llvm::Triple::ppc:
case llvm::Triple::ppc64:
case llvm::Triple::ppc64le:
return CGF->EmitPPCBuiltinExpr(BuiltinID, E);
case llvm::Triple::r600:
case llvm::Triple::amdgcn:
return CGF->EmitAMDGPUBuiltinExpr(BuiltinID, E);
case llvm::Triple::systemz:
return CGF->EmitSystemZBuiltinExpr(BuiltinID, E);
case llvm::Triple::nvptx:
case llvm::Triple::nvptx64:
return CGF->EmitNVPTXBuiltinExpr(BuiltinID, E);
case llvm::Triple::wasm32:
case llvm::Triple::wasm64:
return CGF->EmitWebAssemblyBuiltinExpr(BuiltinID, E);
default:
return nullptr;
}
}
Value *CodeGenFunction::EmitTargetBuiltinExpr(unsigned BuiltinID,
const CallExpr *E) {
if (getContext().BuiltinInfo.isAuxBuiltinID(BuiltinID)) {
assert(getContext().getAuxTargetInfo() && "Missing aux target info");
return EmitTargetArchBuiltinExpr(
this, getContext().BuiltinInfo.getAuxBuiltinID(BuiltinID), E,
getContext().getAuxTargetInfo()->getTriple().getArch());
}
return EmitTargetArchBuiltinExpr(this, BuiltinID, E,
getTarget().getTriple().getArch());
}
static llvm::VectorType *GetNeonType(CodeGenFunction *CGF,
NeonTypeFlags TypeFlags,
bool V1Ty=false) {
int IsQuad = TypeFlags.isQuad();
switch (TypeFlags.getEltType()) {
case NeonTypeFlags::Int8:
case NeonTypeFlags::Poly8:
return llvm::VectorType::get(CGF->Int8Ty, V1Ty ? 1 : (8 << IsQuad));
case NeonTypeFlags::Int16:
case NeonTypeFlags::Poly16:
case NeonTypeFlags::Float16:
return llvm::VectorType::get(CGF->Int16Ty, V1Ty ? 1 : (4 << IsQuad));
case NeonTypeFlags::Int32:
return llvm::VectorType::get(CGF->Int32Ty, V1Ty ? 1 : (2 << IsQuad));
case NeonTypeFlags::Int64:
case NeonTypeFlags::Poly64:
return llvm::VectorType::get(CGF->Int64Ty, V1Ty ? 1 : (1 << IsQuad));
case NeonTypeFlags::Poly128:
// FIXME: i128 and f128 doesn't get fully support in Clang and llvm.
// There is a lot of i128 and f128 API missing.
// so we use v16i8 to represent poly128 and get pattern matched.
return llvm::VectorType::get(CGF->Int8Ty, 16);
case NeonTypeFlags::Float32:
return llvm::VectorType::get(CGF->FloatTy, V1Ty ? 1 : (2 << IsQuad));
case NeonTypeFlags::Float64:
return llvm::VectorType::get(CGF->DoubleTy, V1Ty ? 1 : (1 << IsQuad));
}
llvm_unreachable("Unknown vector element type!");
}
static llvm::VectorType *GetFloatNeonType(CodeGenFunction *CGF,
NeonTypeFlags IntTypeFlags) {
int IsQuad = IntTypeFlags.isQuad();
switch (IntTypeFlags.getEltType()) {
case NeonTypeFlags::Int32:
return llvm::VectorType::get(CGF->FloatTy, (2 << IsQuad));
case NeonTypeFlags::Int64:
return llvm::VectorType::get(CGF->DoubleTy, (1 << IsQuad));
default:
llvm_unreachable("Type can't be converted to floating-point!");
}
}
Value *CodeGenFunction::EmitNeonSplat(Value *V, Constant *C) {
unsigned nElts = cast<llvm::VectorType>(V->getType())->getNumElements();
Value* SV = llvm::ConstantVector::getSplat(nElts, C);
return Builder.CreateShuffleVector(V, V, SV, "lane");
}
Value *CodeGenFunction::EmitNeonCall(Function *F, SmallVectorImpl<Value*> &Ops,
const char *name,
unsigned shift, bool rightshift) {
unsigned j = 0;
for (Function::const_arg_iterator ai = F->arg_begin(), ae = F->arg_end();
ai != ae; ++ai, ++j)
if (shift > 0 && shift == j)
Ops[j] = EmitNeonShiftVector(Ops[j], ai->getType(), rightshift);
else
Ops[j] = Builder.CreateBitCast(Ops[j], ai->getType(), name);
return Builder.CreateCall(F, Ops, name);
}
Value *CodeGenFunction::EmitNeonShiftVector(Value *V, llvm::Type *Ty,
bool neg) {
int SV = cast<ConstantInt>(V)->getSExtValue();
return ConstantInt::get(Ty, neg ? -SV : SV);
}
// \brief Right-shift a vector by a constant.
Value *CodeGenFunction::EmitNeonRShiftImm(Value *Vec, Value *Shift,
llvm::Type *Ty, bool usgn,
const char *name) {
llvm::VectorType *VTy = cast<llvm::VectorType>(Ty);
int ShiftAmt = cast<ConstantInt>(Shift)->getSExtValue();
int EltSize = VTy->getScalarSizeInBits();
Vec = Builder.CreateBitCast(Vec, Ty);
// lshr/ashr are undefined when the shift amount is equal to the vector
// element size.
if (ShiftAmt == EltSize) {
if (usgn) {
// Right-shifting an unsigned value by its size yields 0.
return llvm::ConstantAggregateZero::get(VTy);
} else {
// Right-shifting a signed value by its size is equivalent
// to a shift of size-1.
--ShiftAmt;
Shift = ConstantInt::get(VTy->getElementType(), ShiftAmt);
}
}
Shift = EmitNeonShiftVector(Shift, Ty, false);
if (usgn)
return Builder.CreateLShr(Vec, Shift, name);
else
return Builder.CreateAShr(Vec, Shift, name);
}
enum {
AddRetType = (1 << 0),
Add1ArgType = (1 << 1),
Add2ArgTypes = (1 << 2),
VectorizeRetType = (1 << 3),
VectorizeArgTypes = (1 << 4),
InventFloatType = (1 << 5),
UnsignedAlts = (1 << 6),
Use64BitVectors = (1 << 7),
Use128BitVectors = (1 << 8),
Vectorize1ArgType = Add1ArgType | VectorizeArgTypes,
VectorRet = AddRetType | VectorizeRetType,
VectorRetGetArgs01 =
AddRetType | Add2ArgTypes | VectorizeRetType | VectorizeArgTypes,
FpCmpzModifiers =
AddRetType | VectorizeRetType | Add1ArgType | InventFloatType
};
namespace {
struct NeonIntrinsicInfo {
unsigned BuiltinID;
unsigned LLVMIntrinsic;
unsigned AltLLVMIntrinsic;
const char *NameHint;
unsigned TypeModifier;
bool operator<(unsigned RHSBuiltinID) const {
return BuiltinID < RHSBuiltinID;
}
};
} // end anonymous namespace
#define NEONMAP0(NameBase) \
{ NEON::BI__builtin_neon_ ## NameBase, 0, 0, #NameBase, 0 }
#define NEONMAP1(NameBase, LLVMIntrinsic, TypeModifier) \
{ NEON:: BI__builtin_neon_ ## NameBase, \
Intrinsic::LLVMIntrinsic, 0, #NameBase, TypeModifier }
#define NEONMAP2(NameBase, LLVMIntrinsic, AltLLVMIntrinsic, TypeModifier) \
{ NEON:: BI__builtin_neon_ ## NameBase, \
Intrinsic::LLVMIntrinsic, Intrinsic::AltLLVMIntrinsic, \
#NameBase, TypeModifier }
static const NeonIntrinsicInfo ARMSIMDIntrinsicMap [] = {
NEONMAP2(vabd_v, arm_neon_vabdu, arm_neon_vabds, Add1ArgType | UnsignedAlts),
NEONMAP2(vabdq_v, arm_neon_vabdu, arm_neon_vabds, Add1ArgType | UnsignedAlts),