| // Copyright 2013 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![allow(non_upper_case_globals)] |
| |
| pub use llvm::Type; |
| |
| use llvm; |
| use llvm::{Bool, False, True, TypeKind}; |
| |
| use context::CodegenCx; |
| |
| use syntax::ast; |
| use rustc::ty::layout::{self, Align, Size}; |
| use rustc_data_structures::small_c_str::SmallCStr; |
| |
| use std::fmt; |
| |
| use libc::c_uint; |
| |
| impl PartialEq for Type { |
| fn eq(&self, other: &Self) -> bool { |
| self as *const _ == other as *const _ |
| } |
| } |
| |
| impl fmt::Debug for Type { |
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| f.write_str(&llvm::build_string(|s| unsafe { |
| llvm::LLVMRustWriteTypeToString(self, s); |
| }).expect("non-UTF8 type description from LLVM")) |
| } |
| } |
| |
| impl Type { |
| pub fn void(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMVoidTypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn metadata(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMRustMetadataTypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn i1(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMInt1TypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn i8(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMInt8TypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn i8_llcx(llcx: &llvm::Context) -> &Type { |
| unsafe { |
| llvm::LLVMInt8TypeInContext(llcx) |
| } |
| } |
| |
| pub fn i16(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMInt16TypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn i32(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMInt32TypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn i64(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMInt64TypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn i128(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMIntTypeInContext(cx.llcx, 128) |
| } |
| } |
| |
| // Creates an integer type with the given number of bits, e.g. i24 |
| pub fn ix(cx: &CodegenCx<'ll, '_>, num_bits: u64) -> &'ll Type { |
| unsafe { |
| llvm::LLVMIntTypeInContext(cx.llcx, num_bits as c_uint) |
| } |
| } |
| |
| // Creates an integer type with the given number of bits, e.g. i24 |
| pub fn ix_llcx(llcx: &llvm::Context, num_bits: u64) -> &Type { |
| unsafe { |
| llvm::LLVMIntTypeInContext(llcx, num_bits as c_uint) |
| } |
| } |
| |
| pub fn f32(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMFloatTypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn f64(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMDoubleTypeInContext(cx.llcx) |
| } |
| } |
| |
| pub fn bool(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| Type::i8(cx) |
| } |
| |
| pub fn char(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| Type::i32(cx) |
| } |
| |
| pub fn i8p(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| Type::i8(cx).ptr_to() |
| } |
| |
| pub fn i8p_llcx(llcx: &llvm::Context) -> &Type { |
| Type::i8_llcx(llcx).ptr_to() |
| } |
| |
| pub fn isize(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| cx.isize_ty |
| } |
| |
| pub fn c_int(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| match &cx.tcx.sess.target.target.target_c_int_width[..] { |
| "16" => Type::i16(cx), |
| "32" => Type::i32(cx), |
| "64" => Type::i64(cx), |
| width => bug!("Unsupported target_c_int_width: {}", width), |
| } |
| } |
| |
| pub fn int_from_ty(cx: &CodegenCx<'ll, '_>, t: ast::IntTy) -> &'ll Type { |
| match t { |
| ast::IntTy::Isize => cx.isize_ty, |
| ast::IntTy::I8 => Type::i8(cx), |
| ast::IntTy::I16 => Type::i16(cx), |
| ast::IntTy::I32 => Type::i32(cx), |
| ast::IntTy::I64 => Type::i64(cx), |
| ast::IntTy::I128 => Type::i128(cx), |
| } |
| } |
| |
| pub fn uint_from_ty(cx: &CodegenCx<'ll, '_>, t: ast::UintTy) -> &'ll Type { |
| match t { |
| ast::UintTy::Usize => cx.isize_ty, |
| ast::UintTy::U8 => Type::i8(cx), |
| ast::UintTy::U16 => Type::i16(cx), |
| ast::UintTy::U32 => Type::i32(cx), |
| ast::UintTy::U64 => Type::i64(cx), |
| ast::UintTy::U128 => Type::i128(cx), |
| } |
| } |
| |
| pub fn float_from_ty(cx: &CodegenCx<'ll, '_>, t: ast::FloatTy) -> &'ll Type { |
| match t { |
| ast::FloatTy::F32 => Type::f32(cx), |
| ast::FloatTy::F64 => Type::f64(cx), |
| } |
| } |
| |
| pub fn func(args: &[&'ll Type], ret: &'ll Type) -> &'ll Type { |
| unsafe { |
| llvm::LLVMFunctionType(ret, args.as_ptr(), |
| args.len() as c_uint, False) |
| } |
| } |
| |
| pub fn variadic_func(args: &[&'ll Type], ret: &'ll Type) -> &'ll Type { |
| unsafe { |
| llvm::LLVMFunctionType(ret, args.as_ptr(), |
| args.len() as c_uint, True) |
| } |
| } |
| |
| pub fn struct_(cx: &CodegenCx<'ll, '_>, els: &[&'ll Type], packed: bool) -> &'ll Type { |
| unsafe { |
| llvm::LLVMStructTypeInContext(cx.llcx, els.as_ptr(), |
| els.len() as c_uint, |
| packed as Bool) |
| } |
| } |
| |
| pub fn named_struct(cx: &CodegenCx<'ll, '_>, name: &str) -> &'ll Type { |
| let name = SmallCStr::new(name); |
| unsafe { |
| llvm::LLVMStructCreateNamed(cx.llcx, name.as_ptr()) |
| } |
| } |
| |
| |
| pub fn array(ty: &Type, len: u64) -> &Type { |
| unsafe { |
| llvm::LLVMRustArrayType(ty, len) |
| } |
| } |
| |
| pub fn vector(ty: &Type, len: u64) -> &Type { |
| unsafe { |
| llvm::LLVMVectorType(ty, len as c_uint) |
| } |
| } |
| |
| pub fn kind(&self) -> TypeKind { |
| unsafe { |
| llvm::LLVMRustGetTypeKind(self) |
| } |
| } |
| |
| pub fn set_struct_body(&'ll self, els: &[&'ll Type], packed: bool) { |
| unsafe { |
| llvm::LLVMStructSetBody(self, els.as_ptr(), |
| els.len() as c_uint, packed as Bool) |
| } |
| } |
| |
| pub fn ptr_to(&self) -> &Type { |
| unsafe { |
| llvm::LLVMPointerType(self, 0) |
| } |
| } |
| |
| pub fn element_type(&self) -> &Type { |
| unsafe { |
| llvm::LLVMGetElementType(self) |
| } |
| } |
| |
| /// Return the number of elements in `self` if it is a LLVM vector type. |
| pub fn vector_length(&self) -> usize { |
| unsafe { |
| llvm::LLVMGetVectorSize(self) as usize |
| } |
| } |
| |
| pub fn func_params(&self) -> Vec<&Type> { |
| unsafe { |
| let n_args = llvm::LLVMCountParamTypes(self) as usize; |
| let mut args = Vec::with_capacity(n_args); |
| llvm::LLVMGetParamTypes(self, args.as_mut_ptr()); |
| args.set_len(n_args); |
| args |
| } |
| } |
| |
| pub fn float_width(&self) -> usize { |
| match self.kind() { |
| TypeKind::Float => 32, |
| TypeKind::Double => 64, |
| TypeKind::X86_FP80 => 80, |
| TypeKind::FP128 | TypeKind::PPC_FP128 => 128, |
| _ => bug!("llvm_float_width called on a non-float type") |
| } |
| } |
| |
| /// Retrieve the bit width of the integer type `self`. |
| pub fn int_width(&self) -> u64 { |
| unsafe { |
| llvm::LLVMGetIntTypeWidth(self) as u64 |
| } |
| } |
| |
| pub fn from_integer(cx: &CodegenCx<'ll, '_>, i: layout::Integer) -> &'ll Type { |
| use rustc::ty::layout::Integer::*; |
| match i { |
| I8 => Type::i8(cx), |
| I16 => Type::i16(cx), |
| I32 => Type::i32(cx), |
| I64 => Type::i64(cx), |
| I128 => Type::i128(cx), |
| } |
| } |
| |
| /// Return a LLVM type that has at most the required alignment, |
| /// as a conservative approximation for unknown pointee types. |
| pub fn pointee_for_abi_align(cx: &CodegenCx<'ll, '_>, align: Align) -> &'ll Type { |
| // FIXME(eddyb) We could find a better approximation if ity.align < align. |
| let ity = layout::Integer::approximate_abi_align(cx, align); |
| Type::from_integer(cx, ity) |
| } |
| |
| /// Return a LLVM type that has at most the required alignment, |
| /// and exactly the required size, as a best-effort padding array. |
| pub fn padding_filler(cx: &CodegenCx<'ll, '_>, size: Size, align: Align) -> &'ll Type { |
| let unit = layout::Integer::approximate_abi_align(cx, align); |
| let size = size.bytes(); |
| let unit_size = unit.size().bytes(); |
| assert_eq!(size % unit_size, 0); |
| Type::array(Type::from_integer(cx, unit), size / unit_size) |
| } |
| |
| pub fn x86_mmx(cx: &CodegenCx<'ll, '_>) -> &'ll Type { |
| unsafe { |
| llvm::LLVMX86MMXTypeInContext(cx.llcx) |
| } |
| } |
| } |