| ; RUN: opt < %s -argpromotion -S | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %union.u = type { x86_fp80 } |
| %struct.s = type { double, i16, i8, [5 x i8] } |
| |
| @b = internal global %struct.s { double 3.14, i16 9439, i8 25, [5 x i8] undef }, align 16 |
| |
| %struct.Foo = type { i32, i64 } |
| @a = internal global %struct.Foo { i32 1, i64 2 }, align 8 |
| |
| define void @run() { |
| entry: |
| tail call i8 @UseLongDoubleUnsafely(%union.u* byval align 16 bitcast (%struct.s* @b to %union.u*)) |
| tail call x86_fp80 @UseLongDoubleSafely(%union.u* byval align 16 bitcast (%struct.s* @b to %union.u*)) |
| call i64 @AccessPaddingOfStruct(%struct.Foo* @a) |
| call i64 @CaptureAStruct(%struct.Foo* @a) |
| ret void |
| } |
| |
| ; CHECK: internal i8 @UseLongDoubleUnsafely(%union.u* byval align 16 %arg) { |
| define internal i8 @UseLongDoubleUnsafely(%union.u* byval align 16 %arg) { |
| entry: |
| %bitcast = bitcast %union.u* %arg to %struct.s* |
| %gep = getelementptr inbounds %struct.s, %struct.s* %bitcast, i64 0, i32 2 |
| %result = load i8, i8* %gep |
| ret i8 %result |
| } |
| |
| ; CHECK: internal x86_fp80 @UseLongDoubleSafely(x86_fp80 {{%.*}}) { |
| define internal x86_fp80 @UseLongDoubleSafely(%union.u* byval align 16 %arg) { |
| %gep = getelementptr inbounds %union.u, %union.u* %arg, i64 0, i32 0 |
| %fp80 = load x86_fp80, x86_fp80* %gep |
| ret x86_fp80 %fp80 |
| } |
| |
| ; CHECK: define internal i64 @AccessPaddingOfStruct(%struct.Foo* byval %a) { |
| define internal i64 @AccessPaddingOfStruct(%struct.Foo* byval %a) { |
| %p = bitcast %struct.Foo* %a to i64* |
| %v = load i64, i64* %p |
| ret i64 %v |
| } |
| |
| ; CHECK: define internal i64 @CaptureAStruct(%struct.Foo* byval %a) { |
| define internal i64 @CaptureAStruct(%struct.Foo* byval %a) { |
| entry: |
| %a_ptr = alloca %struct.Foo* |
| br label %loop |
| |
| loop: |
| %phi = phi %struct.Foo* [ null, %entry ], [ %gep, %loop ] |
| %0 = phi %struct.Foo* [ %a, %entry ], [ %0, %loop ] |
| store %struct.Foo* %phi, %struct.Foo** %a_ptr |
| %gep = getelementptr %struct.Foo, %struct.Foo* %a, i64 0 |
| br label %loop |
| } |