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