llvm/test/Transforms/Inline/inline-deferred-instsimplify.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt < %s -passes=inline -S | FileCheck %s
; RUN: opt < %s -passes='cgscc(inline)' -S | FileCheck %s

%struct.a = type { i32, i32, i32, i32, i32 }

@g_var = global %struct.a { i32 1, i32 0, i32 0, i32 0, i32 0 }, align 8
@other_g_var = global %struct.a zeroinitializer, align 4

define void @callee(ptr noundef byval(%struct.a) align 8 %ptr) {
; CHECK-LABEL: define void @callee(
; CHECK-SAME: ptr noundef byval([[STRUCT_A:%.*]]) align 8 [[PTR:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[VAL:%.*]] = load i32, ptr [[PTR]], align 8
; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i32 [[VAL]], 0
; CHECK-NEXT:    br i1 [[DOTNOT]], label [[CHECK_POINTERS_ARE_EQUAL:%.*]], label [[STORE_PTR_IN_GVAR:%.*]]
; CHECK:       store_ptr_in_gvar:
; CHECK-NEXT:    store ptr [[PTR]], ptr @other_g_var, align 8
; CHECK-NEXT:    br label [[CHECK_POINTERS_ARE_EQUAL]]
; CHECK:       check_pointers_are_equal:
; CHECK-NEXT:    [[PHI:%.*]] = phi ptr [ [[PTR]], [[STORE_PTR_IN_GVAR]] ], [ @other_g_var, [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[DOTNOT1:%.*]] = icmp eq ptr [[PHI]], [[PTR]]
; CHECK-NEXT:    br i1 [[DOTNOT1]], label [[RETURN:%.*]], label [[ABORT:%.*]]
; CHECK:       abort:
; CHECK-NEXT:    call void @abort()
; CHECK-NEXT:    unreachable
; CHECK:       return:
; CHECK-NEXT:    ret void
;
entry:
  %val = load i32, ptr %ptr, align 8
  %.not = icmp eq i32 %val, 0
  br i1 %.not, label %check_pointers_are_equal, label %store_ptr_in_gvar

store_ptr_in_gvar:                                ; preds = %entry
  store ptr %ptr, ptr @other_g_var, align 8
  br label %check_pointers_are_equal

check_pointers_are_equal:                         ; preds = %store_ptr_in_gvar, %entry
  %phi = phi ptr [ %ptr, %store_ptr_in_gvar ], [ @other_g_var, %entry ]
; FIXME: While inlining, the following is miscompiled to i1 false,
; as %ptr in the phi-node is not taken into account.
  %.not1 = icmp eq ptr %phi, %ptr
  br i1 %.not1, label %return, label %abort

abort:                                            ; preds = %check_pointers_are_equal
  call void @abort()
  unreachable

return:                                           ; preds = %check_pointers_are_equal
  ret void
}

define i32 @main() {
; CHECK-LABEL: define i32 @main() {
; CHECK-NEXT:    [[G_VAR:%.*]] = alloca [[STRUCT_A:%.*]], align 8
; CHECK-NEXT:    call void @llvm.lifetime.start.p0(i64 20, ptr [[G_VAR]])
; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr align 1 [[G_VAR]], ptr align 1 @g_var, i64 20, i1 false)
; CHECK-NEXT:    [[VAL_I:%.*]] = load i32, ptr [[G_VAR]], align 8
; CHECK-NEXT:    [[DOTNOT_I:%.*]] = icmp eq i32 [[VAL_I]], 0
; CHECK-NEXT:    br i1 [[DOTNOT_I]], label [[CHECK_POINTERS_ARE_EQUAL_I:%.*]], label [[STORE_PTR_IN_GVAR_I:%.*]]
; CHECK:       store_ptr_in_gvar.i:
; CHECK-NEXT:    store ptr [[G_VAR]], ptr @other_g_var, align 8
; CHECK-NEXT:    br label [[CHECK_POINTERS_ARE_EQUAL_I]]
; CHECK:       check_pointers_are_equal.i:
; CHECK-NEXT:    [[PHI_I:%.*]] = phi ptr [ [[G_VAR]], [[STORE_PTR_IN_GVAR_I]] ], [ @other_g_var, [[TMP0:%.*]] ]
; CHECK-NEXT:    call void @abort()
; CHECK-NEXT:    unreachable
; CHECK:       callee.exit:
; CHECK-NEXT:    ret i32 0
;
  call void @callee(ptr noundef byval(%struct.a) align 8 @g_var)
  ret i32 0
}

declare void @abort()