1; RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s 2 3; Generated from the source file pr19307.cc: 4; #include <string> 5; void parse_range(unsigned long long &offset, unsigned long long &limit, 6; std::string range) { 7; if (range.compare(0, 6, "items=") != 0 || range[6] == '-') 8; offset = 1; 9; range.erase(0, 6); 10; limit = 2; 11; } 12; with "clang++ -S -emit-llvm -O0 -g pr19307.cc" 13 14; Location of "range" string is spilled from %rdx to stack and is 15; addressed via %rbp. 16; CHECK: movq %rdx, {{[-0-9]+}}(%rbp) 17; CHECK-NEXT: [[START_LABEL:.Ltmp[0-9]+]] 18; This location should be valid until the end of the function. 19 20; Verify that we have proper range in debug_loc section: 21; CHECK: .Ldebug_loc{{[0-9]+}}: 22; CHECK: DW_OP_breg1 23; CHECK: .Lset{{[0-9]+}} = [[START_LABEL]]-.Lfunc_begin0 24; CHECK-NEXT: .quad .Lset{{[0-9]+}} 25; CHECK-NEXT: .Lset{{[0-9]+}} = .Lfunc_end0-.Lfunc_begin0 26; CHECK-NEXT: .quad .Lset{{[0-9]+}} 27; CHECK: DW_OP_breg6 28; CHECK: DW_OP_deref 29 30; ModuleID = 'pr19307.cc' 31target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 32target triple = "x86_64-unknown-linux-gnu" 33 34%"class.std::basic_string" = type { %"struct.std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" } 35%"struct.std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" = type { i8* } 36 37@.str = private unnamed_addr constant [7 x i8] c"items=\00", align 1 38 39; Function Attrs: uwtable 40define void @_Z11parse_rangeRyS_Ss(i64* %offset, i64* %limit, %"class.std::basic_string"* %range) #0 { 41entry: 42 %offset.addr = alloca i64*, align 8 43 %limit.addr = alloca i64*, align 8 44 store i64* %offset, i64** %offset.addr, align 8 45 call void @llvm.dbg.declare(metadata !{i64** %offset.addr}, metadata !45), !dbg !46 46 store i64* %limit, i64** %limit.addr, align 8 47 call void @llvm.dbg.declare(metadata !{i64** %limit.addr}, metadata !47), !dbg !46 48 call void @llvm.dbg.declare(metadata !{%"class.std::basic_string"* %range}, metadata !48), !dbg !49 49 %call = call i32 @_ZNKSs7compareEmmPKc(%"class.std::basic_string"* %range, i64 0, i64 6, i8* getelementptr inbounds ([7 x i8]* @.str, i32 0, i32 0)), !dbg !50 50 %cmp = icmp ne i32 %call, 0, !dbg !50 51 br i1 %cmp, label %if.then, label %lor.lhs.false, !dbg !50 52 53lor.lhs.false: ; preds = %entry 54 %call1 = call i8* @_ZNSsixEm(%"class.std::basic_string"* %range, i64 6), !dbg !52 55 %0 = load i8* %call1, !dbg !52 56 %conv = sext i8 %0 to i32, !dbg !52 57 %cmp2 = icmp eq i32 %conv, 45, !dbg !52 58 br i1 %cmp2, label %if.then, label %if.end, !dbg !52 59 60if.then: ; preds = %lor.lhs.false, %entry 61 %1 = load i64** %offset.addr, align 8, !dbg !54 62 store i64 1, i64* %1, align 8, !dbg !54 63 br label %if.end, !dbg !54 64 65if.end: ; preds = %if.then, %lor.lhs.false 66 %call3 = call %"class.std::basic_string"* @_ZNSs5eraseEmm(%"class.std::basic_string"* %range, i64 0, i64 6), !dbg !55 67 %2 = load i64** %limit.addr, align 8, !dbg !56 68 store i64 2, i64* %2, align 8, !dbg !56 69 ret void, !dbg !57 70} 71 72; Function Attrs: nounwind readnone 73declare void @llvm.dbg.declare(metadata, metadata) #1 74 75declare i32 @_ZNKSs7compareEmmPKc(%"class.std::basic_string"*, i64, i64, i8*) #2 76 77declare i8* @_ZNSsixEm(%"class.std::basic_string"*, i64) #2 78 79declare %"class.std::basic_string"* @_ZNSs5eraseEmm(%"class.std::basic_string"*, i64, i64) #2 80 81attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 82attributes #1 = { nounwind readnone } 83attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 84 85!llvm.dbg.cu = !{!0} 86!llvm.module.flags = !{!42, !43} 87!llvm.ident = !{!44} 88 89!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 (209308)", i1 false, metadata !"", i32 0, metadata !2, metadata !3, metadata !12, metadata !2, metadata !21, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/llvm_cmake_gcc/pr19307.cc] [DW_LANG_C_plus_plus] 90!1 = metadata !{metadata !"pr19307.cc", metadata !"/llvm_cmake_gcc"} 91!2 = metadata !{} 92!3 = metadata !{metadata !4, metadata !6, metadata !8} 93!4 = metadata !{i32 786451, metadata !5, null, metadata !"", i32 83, i64 0, i64 0, i32 0, i32 4, null, null, i32 0, null, null, metadata !"_ZTS11__mbstate_t"} ; [ DW_TAG_structure_type ] [line 83, size 0, align 0, offset 0] [decl] [from ] 94!5 = metadata !{metadata !"/usr/include/wchar.h", metadata !"/llvm_cmake_gcc"} 95!6 = metadata !{i32 786451, metadata !7, null, metadata !"lconv", i32 54, i64 0, i64 0, i32 0, i32 4, null, null, i32 0, null, null, metadata !"_ZTS5lconv"} ; [ DW_TAG_structure_type ] [lconv] [line 54, size 0, align 0, offset 0] [decl] [from ] 96!7 = metadata !{metadata !"/usr/include/locale.h", metadata !"/llvm_cmake_gcc"} 97!8 = metadata !{i32 786434, metadata !9, metadata !10, metadata !"basic_string<char, std::char_traits<char>, std::allocator<char> >", i32 1134, i64 0, i64 0, i32 0, i32 4, null, null, i32 0, null, null, metadata !"_ZTSSs"} ; [ DW_TAG_class_type ] [basic_string<char, std::char_traits<char>, std::allocator<char> >] [line 1134, size 0, align 0, offset 0] [decl] [from ] 98!9 = metadata !{metadata !"/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/bits/basic_string.tcc", metadata !"/llvm_cmake_gcc"} 99!10 = metadata !{i32 786489, metadata !11, null, metadata !"std", i32 153} ; [ DW_TAG_namespace ] [std] [line 153] 100!11 = metadata !{metadata !"/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/x86_64-linux-gnu/bits/c++config.h", metadata !"/llvm_cmake_gcc"} 101!12 = metadata !{metadata !13} 102!13 = metadata !{i32 786478, metadata !1, metadata !14, metadata !"parse_range", metadata !"parse_range", metadata !"_Z11parse_rangeRyS_Ss", i32 3, metadata !15, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (i64*, i64*, %"class.std::basic_string"*)* @_Z11parse_rangeRyS_Ss, null, null, metadata !2, i32 4} ; [ DW_TAG_subprogram ] [line 3] [def] [scope 4] [parse_range] 103!14 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/llvm_cmake_gcc/pr19307.cc] 104!15 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 105!16 = metadata !{null, metadata !17, metadata !17, metadata !19} 106!17 = metadata !{i32 786448, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !18} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from long long unsigned int] 107!18 = metadata !{i32 786468, null, null, metadata !"long long unsigned int", i32 0, i64 64, i64 64, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ] [long long unsigned int] [line 0, size 64, align 64, offset 0, enc DW_ATE_unsigned] 108!19 = metadata !{i32 786454, metadata !20, metadata !10, metadata !"string", i32 65, i64 0, i64 0, i64 0, i32 0, metadata !"_ZTSSs"} ; [ DW_TAG_typedef ] [string] [line 65, size 0, align 0, offset 0] [from _ZTSSs] 109!20 = metadata !{metadata !"/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/bits/stringfwd.h", metadata !"/llvm_cmake_gcc"} 110!21 = metadata !{metadata !22, metadata !26, metadata !29, metadata !33, metadata !38, metadata !41} 111!22 = metadata !{i32 786490, metadata !23, metadata !25, i32 57} ; [ DW_TAG_imported_module ] 112!23 = metadata !{i32 786489, metadata !24, null, metadata !"__gnu_debug", i32 55} ; [ DW_TAG_namespace ] [__gnu_debug] [line 55] 113!24 = metadata !{metadata !"/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/debug/debug.h", metadata !"/llvm_cmake_gcc"} 114!25 = metadata !{i32 786489, metadata !24, metadata !10, metadata !"__debug", i32 49} ; [ DW_TAG_namespace ] [__debug] [line 49] 115!26 = metadata !{i32 786440, metadata !10, metadata !27, i32 66} ; [ DW_TAG_imported_declaration ] 116!27 = metadata !{i32 786454, metadata !5, null, metadata !"mbstate_t", i32 106, i64 0, i64 0, i64 0, i32 0, metadata !28} ; [ DW_TAG_typedef ] [mbstate_t] [line 106, size 0, align 0, offset 0] [from __mbstate_t] 117!28 = metadata !{i32 786454, metadata !5, null, metadata !"__mbstate_t", i32 95, i64 0, i64 0, i64 0, i32 0, metadata !"_ZTS11__mbstate_t"} ; [ DW_TAG_typedef ] [__mbstate_t] [line 95, size 0, align 0, offset 0] [from _ZTS11__mbstate_t] 118!29 = metadata !{i32 786440, metadata !10, metadata !30, i32 141} ; [ DW_TAG_imported_declaration ] 119!30 = metadata !{i32 786454, metadata !31, null, metadata !"wint_t", i32 141, i64 0, i64 0, i64 0, i32 0, metadata !32} ; [ DW_TAG_typedef ] [wint_t] [line 141, size 0, align 0, offset 0] [from unsigned int] 120!31 = metadata !{metadata !"/llvm_cmake_gcc/bin/../lib/clang/3.5.0/include/stddef.h", metadata !"/llvm_cmake_gcc"} 121!32 = metadata !{i32 786468, null, null, metadata !"unsigned int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ] [unsigned int] [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned] 122!33 = metadata !{i32 786440, metadata !34, metadata !36, i32 42} ; [ DW_TAG_imported_declaration ] 123!34 = metadata !{i32 786489, metadata !35, null, metadata !"__gnu_cxx", i32 69} ; [ DW_TAG_namespace ] [__gnu_cxx] [line 69] 124!35 = metadata !{metadata !"/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/bits/cpp_type_traits.h", metadata !"/llvm_cmake_gcc"} 125!36 = metadata !{i32 786454, metadata !11, metadata !10, metadata !"size_t", i32 155, i64 0, i64 0, i64 0, i32 0, metadata !37} ; [ DW_TAG_typedef ] [size_t] [line 155, size 0, align 0, offset 0] [from long unsigned int] 126!37 = metadata !{i32 786468, null, null, metadata !"long unsigned int", i32 0, i64 64, i64 64, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ] [long unsigned int] [line 0, size 64, align 64, offset 0, enc DW_ATE_unsigned] 127!38 = metadata !{i32 786440, metadata !34, metadata !39, i32 43} ; [ DW_TAG_imported_declaration ] 128!39 = metadata !{i32 786454, metadata !11, metadata !10, metadata !"ptrdiff_t", i32 156, i64 0, i64 0, i64 0, i32 0, metadata !40} ; [ DW_TAG_typedef ] [ptrdiff_t] [line 156, size 0, align 0, offset 0] [from long int] 129!40 = metadata !{i32 786468, null, null, metadata !"long int", i32 0, i64 64, i64 64, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [long int] [line 0, size 64, align 64, offset 0, enc DW_ATE_signed] 130!41 = metadata !{i32 786440, metadata !10, metadata !"_ZTS5lconv", i32 55} ; [ DW_TAG_imported_declaration ] 131!42 = metadata !{i32 2, metadata !"Dwarf Version", i32 4} 132!43 = metadata !{i32 2, metadata !"Debug Info Version", i32 1} 133!44 = metadata !{metadata !"clang version 3.5.0 (209308)"} 134!45 = metadata !{i32 786689, metadata !13, metadata !"offset", metadata !14, i32 16777219, metadata !17, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [offset] [line 3] 135!46 = metadata !{i32 3, i32 0, metadata !13, null} 136!47 = metadata !{i32 786689, metadata !13, metadata !"limit", metadata !14, i32 33554435, metadata !17, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [limit] [line 3] 137!48 = metadata !{i32 786689, metadata !13, metadata !"range", metadata !14, i32 50331652, metadata !19, i32 8192, i32 0} ; [ DW_TAG_arg_variable ] [range] [line 4] 138!49 = metadata !{i32 4, i32 0, metadata !13, null} 139!50 = metadata !{i32 5, i32 0, metadata !51, null} 140!51 = metadata !{i32 786443, metadata !1, metadata !13, i32 5, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/llvm_cmake_gcc/pr19307.cc] 141!52 = metadata !{i32 5, i32 0, metadata !53, null} 142!53 = metadata !{i32 786443, metadata !1, metadata !51, i32 5, i32 0, i32 1, i32 1} ; [ DW_TAG_lexical_block ] [/llvm_cmake_gcc/pr19307.cc] 143!54 = metadata !{i32 6, i32 0, metadata !51, null} 144!55 = metadata !{i32 7, i32 0, metadata !13, null} 145!56 = metadata !{i32 8, i32 0, metadata !13, null} ; [ DW_TAG_imported_declaration ] 146!57 = metadata !{i32 9, i32 0, metadata !13, null} 147 148