1; RUN: opt < %s -argpromotion -S | FileCheck %s 2; RUN: opt < %s -passes=argpromotion -S | FileCheck %s 3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5target triple = "x86_64-unknown-linux-gnu" 6 7%union.u = type { x86_fp80 } 8%struct.s = type { double, i16, i8, [5 x i8] } 9 10@b = internal global %struct.s { double 3.14, i16 9439, i8 25, [5 x i8] undef }, align 16 11 12%struct.Foo = type { i32, i64 } 13@a = internal global %struct.Foo { i32 1, i64 2 }, align 8 14 15define void @run() { 16entry: 17 tail call i8 @UseLongDoubleUnsafely(%union.u* byval align 16 bitcast (%struct.s* @b to %union.u*)) 18 tail call x86_fp80 @UseLongDoubleSafely(%union.u* byval align 16 bitcast (%struct.s* @b to %union.u*)) 19 call i64 @AccessPaddingOfStruct(%struct.Foo* @a) 20 call i64 @CaptureAStruct(%struct.Foo* @a) 21 ret void 22} 23 24; CHECK: internal i8 @UseLongDoubleUnsafely(%union.u* byval align 16 %arg) { 25define internal i8 @UseLongDoubleUnsafely(%union.u* byval align 16 %arg) { 26entry: 27 %bitcast = bitcast %union.u* %arg to %struct.s* 28 %gep = getelementptr inbounds %struct.s, %struct.s* %bitcast, i64 0, i32 2 29 %result = load i8, i8* %gep 30 ret i8 %result 31} 32 33; CHECK: internal x86_fp80 @UseLongDoubleSafely(x86_fp80 {{%.*}}) { 34define internal x86_fp80 @UseLongDoubleSafely(%union.u* byval align 16 %arg) { 35 %gep = getelementptr inbounds %union.u, %union.u* %arg, i64 0, i32 0 36 %fp80 = load x86_fp80, x86_fp80* %gep 37 ret x86_fp80 %fp80 38} 39 40; CHECK: define internal i64 @AccessPaddingOfStruct(%struct.Foo* byval %a) { 41define internal i64 @AccessPaddingOfStruct(%struct.Foo* byval %a) { 42 %p = bitcast %struct.Foo* %a to i64* 43 %v = load i64, i64* %p 44 ret i64 %v 45} 46 47; CHECK: define internal i64 @CaptureAStruct(%struct.Foo* byval %a) { 48define internal i64 @CaptureAStruct(%struct.Foo* byval %a) { 49entry: 50 %a_ptr = alloca %struct.Foo* 51 br label %loop 52 53loop: 54 %phi = phi %struct.Foo* [ null, %entry ], [ %gep, %loop ] 55 %0 = phi %struct.Foo* [ %a, %entry ], [ %0, %loop ] 56 store %struct.Foo* %phi, %struct.Foo** %a_ptr 57 %gep = getelementptr %struct.Foo, %struct.Foo* %a, i64 0 58 br label %loop 59} 60