| ; RUN: opt -basic-aa -dse -S < %s | FileCheck %s |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %class.basic_string = type { %"class.__gnu_cxx::__versa_string" } |
| %"class.__gnu_cxx::__versa_string" = type { %"class.__gnu_cxx::__sso_string_base" } |
| %"class.__gnu_cxx::__sso_string_base" = type { %"struct.__gnu_cxx::__vstring_utility<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider", i64, %union.anon } |
| %"struct.__gnu_cxx::__vstring_utility<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" = type { i8* } |
| %union.anon = type { i64, [8 x i8] } |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) #0 |
| |
| ; Function Attrs: noinline nounwind readonly uwtable |
| declare zeroext i1 @callee_takes_string(%class.basic_string* nonnull) #1 align 2 |
| |
| ; Function Attrs: nounwind uwtable |
| define weak_odr zeroext i1 @test() #2 align 2 { |
| |
| ; CHECK-LABEL: @test |
| |
| bb: |
| %tmp = alloca %class.basic_string, align 8 |
| %tmp1 = alloca %class.basic_string, align 8 |
| %tmp3 = getelementptr inbounds %class.basic_string, %class.basic_string* %tmp, i64 0, i32 0, i32 0, i32 2 |
| %tmp4 = bitcast %union.anon* %tmp3 to i8* |
| %tmp5 = getelementptr inbounds %class.basic_string, %class.basic_string* %tmp, i64 0, i32 0, i32 0, i32 0, i32 0 |
| %tmp6 = getelementptr inbounds %class.basic_string, %class.basic_string* %tmp, i64 0, i32 0, i32 0, i32 1 |
| %tmp7 = getelementptr inbounds i8, i8* %tmp4, i64 1 |
| %tmp8 = bitcast %class.basic_string* %tmp to i8* |
| %tmp9 = bitcast i64 0 to i64 |
| %tmp10 = getelementptr inbounds %class.basic_string, %class.basic_string* %tmp1, i64 0, i32 0, i32 0, i32 2 |
| %tmp11 = bitcast %union.anon* %tmp10 to i8* |
| %tmp12 = getelementptr inbounds %class.basic_string, %class.basic_string* %tmp1, i64 0, i32 0, i32 0, i32 0, i32 0 |
| %tmp13 = getelementptr inbounds %class.basic_string, %class.basic_string* %tmp1, i64 0, i32 0, i32 0, i32 1 |
| %tmp14 = getelementptr inbounds i8, i8* %tmp11, i64 1 |
| %tmp15 = bitcast %class.basic_string* %tmp1 to i8* |
| br label %_ZN12basic_stringIcSt11char_traitsIcESaIcEEC2EPKcRKS2_.exit |
| |
| _ZN12basic_stringIcSt11char_traitsIcESaIcEEC2EPKcRKS2_.exit: ; preds = %bb |
| store i8* %tmp4, i8** %tmp5, align 8 |
| store i8 62, i8* %tmp4, align 8 |
| store i64 1, i64* %tmp6, align 8 |
| store i8 0, i8* %tmp7, align 1 |
| %tmp16 = call zeroext i1 @callee_takes_string(%class.basic_string* nonnull %tmp) |
| br label %_ZN9__gnu_cxx17__sso_string_baseIcSt11char_traitsIcESaIcEED2Ev.exit3 |
| |
| _ZN9__gnu_cxx17__sso_string_baseIcSt11char_traitsIcESaIcEED2Ev.exit3: ; preds = %_ZN12basic_stringIcSt11char_traitsIcESaIcEEC2EPKcRKS2_.exit |
| |
| ; CHECK: _ZN9__gnu_cxx17__sso_string_baseIcSt11char_traitsIcESaIcEED2Ev.exit3: |
| |
| ; The following can be read through the call %tmp17: |
| store i8* %tmp11, i8** %tmp12, align 8 |
| store i8 125, i8* %tmp11, align 8 |
| store i64 1, i64* %tmp13, align 8 |
| store i8 0, i8* %tmp14, align 1 |
| |
| ; CHECK: store i8* %tmp11, i8** %tmp12, align 8 |
| ; CHECK: store i8 125, i8* %tmp11, align 8 |
| ; CHECK: store i64 1, i64* %tmp13, align 8 |
| ; CHECK: store i8 0, i8* %tmp14, align 1 |
| |
| %tmp17 = call zeroext i1 @callee_takes_string(%class.basic_string* nonnull %tmp1) |
| call void @llvm.memset.p0i8.i64(i8* align 8 %tmp11, i8 -51, i64 16, i1 false) #0 |
| call void @llvm.memset.p0i8.i64(i8* align 8 %tmp15, i8 -51, i64 32, i1 false) #0 |
| call void @llvm.memset.p0i8.i64(i8* align 8 %tmp4, i8 -51, i64 16, i1 false) #0 |
| call void @llvm.memset.p0i8.i64(i8* align 8 %tmp8, i8 -51, i64 32, i1 false) #0 |
| ret i1 %tmp17 |
| } |
| |
| attributes #0 = { nounwind } |
| attributes #1 = { noinline nounwind readonly uwtable } |
| attributes #2 = { nounwind uwtable } |
| |