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1# RUN: llc -o - %s -start-after=patchable-function -O0 | FileCheck %s2 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 is15# 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_breg123# CHECK: .quad [[START_LABEL]]-.Lfunc_begin024# CHECK-NEXT: .quad .Lfunc_end0-.Lfunc_begin025# CHECK: DW_OP_breg626# CHECK: DW_OP_deref27--- |28 target triple = "x86_64-unknown-linux-gnu"29 30 %"class.std::basic_string" = type { %"struct.std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" }31 %"struct.std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" = type { ptr }32 33 @.str = private unnamed_addr constant [7 x i8] c"items=\00", align 134 35 ; Function Attrs: uwtable36 define void @_Z11parse_rangeRyS_Ss(ptr %offset, ptr %limit, ptr %range) #0 !dbg !34 {37 entry:38 %offset.addr = alloca ptr, align 839 %limit.addr = alloca ptr, align 840 store ptr %offset, ptr %offset.addr, align 841 call void @llvm.dbg.declare(metadata ptr %offset.addr, metadata !41, metadata !DIExpression()), !dbg !4242 store ptr %limit, ptr %limit.addr, align 843 call void @llvm.dbg.declare(metadata ptr %limit.addr, metadata !43, metadata !DIExpression()), !dbg !4244 call void @llvm.dbg.declare(metadata ptr %range, metadata !44, metadata !DIExpression(DW_OP_deref)), !dbg !4545 %call = call i32 @_ZNKSs7compareEmmPKc(ptr %range, i64 0, i64 6, ptr @.str), !dbg !4646 %cmp = icmp ne i32 %call, 0, !dbg !4647 br i1 %cmp, label %if.then, label %lor.lhs.false, !dbg !4648 49 lor.lhs.false: ; preds = %entry50 %call1 = call ptr @_ZNSsixEm(ptr %range, i64 6), !dbg !4851 %0 = load i8, ptr %call1, !dbg !4852 %conv = sext i8 %0 to i32, !dbg !4853 %cmp2 = icmp eq i32 %conv, 45, !dbg !4854 br i1 %cmp2, label %if.then, label %if.end, !dbg !4855 56 if.then: ; preds = %lor.lhs.false, %entry57 %1 = load ptr, ptr %offset.addr, align 8, !dbg !5058 store i64 1, ptr %1, align 8, !dbg !5059 br label %if.end, !dbg !5060 61 if.end: ; preds = %if.then, %lor.lhs.false62 %call3 = call ptr @_ZNSs5eraseEmm(ptr %range, i64 0, i64 6), !dbg !5163 %2 = load ptr, ptr %limit.addr, align 8, !dbg !5264 store i64 2, ptr %2, align 8, !dbg !5265 ret void, !dbg !5366 }67 68 ; Function Attrs: nounwind readnone speculatable69 declare void @llvm.dbg.declare(metadata, metadata, metadata) #170 71 declare i32 @_ZNKSs7compareEmmPKc(ptr, i64, i64, ptr) #272 73 declare ptr @_ZNSsixEm(ptr, i64) #274 75 declare ptr @_ZNSs5eraseEmm(ptr, i64, i64) #276 77 ; Function Attrs: nounwind78 declare void @llvm.stackprotector(ptr, ptr) #379 80 attributes #0 = { uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }81 attributes #1 = { nounwind readnone speculatable }82 attributes #2 = { "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }83 attributes #3 = { nounwind }84 85 !llvm.dbg.cu = !{!0}86 !llvm.module.flags = !{!31, !32}87 !llvm.ident = !{!33}88 89 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.5.0 (209308)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, globals: !2, imports: !11)90 !1 = !DIFile(filename: "pr19307.cc", directory: "/llvm_cmake_gcc")91 !2 = !{}92 !3 = !{!4, !6, !8}93 !4 = !DICompositeType(tag: DW_TAG_structure_type, file: !5, line: 83, flags: DIFlagFwdDecl, identifier: "_ZTS11__mbstate_t")94 !5 = !DIFile(filename: "/usr/include/wchar.h", directory: "/llvm_cmake_gcc")95 !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "lconv", file: !7, line: 54, flags: DIFlagFwdDecl, identifier: "_ZTS5lconv")96 !7 = !DIFile(filename: "/usr/include/locale.h", directory: "/llvm_cmake_gcc")97 !8 = !DICompositeType(tag: DW_TAG_class_type, name: "basic_string<char, std::char_traits<char>, std::allocator<char> >", scope: !10, file: !9, line: 1134, flags: DIFlagFwdDecl, identifier: "_ZTSSs")98 !9 = !DIFile(filename: "/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/bits/basic_string.tcc", directory: "/llvm_cmake_gcc")99 !10 = !DINamespace(name: "std", scope: null)100 !11 = !{!12, !15, !18, !22, !27, !30}101 !12 = !DIImportedEntity(tag: DW_TAG_imported_module, scope: !13, entity: !14, file: !1, line: 57)102 !13 = !DINamespace(name: "__gnu_debug", scope: null)103 !14 = !DINamespace(name: "__debug", scope: !10)104 !15 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !10, entity: !16, file: !1, line: 66)105 !16 = !DIDerivedType(tag: DW_TAG_typedef, name: "mbstate_t", file: !5, line: 106, baseType: !17)106 !17 = !DIDerivedType(tag: DW_TAG_typedef, name: "__mbstate_t", file: !5, line: 95, baseType: !4)107 !18 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !10, entity: !19, file: !1, line: 141)108 !19 = !DIDerivedType(tag: DW_TAG_typedef, name: "wint_t", file: !20, line: 141, baseType: !21)109 !20 = !DIFile(filename: "/llvm_cmake_gcc/bin/../lib/clang/3.5.0/include/stddef.h", directory: "/llvm_cmake_gcc")110 !21 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)111 !22 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !23, entity: !24, file: !1, line: 42)112 !23 = !DINamespace(name: "__gnu_cxx", scope: null)113 !24 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", scope: !10, file: !25, line: 155, baseType: !26)114 !25 = !DIFile(filename: "/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/x86_64-linux-gnu/bits/c++config.h", directory: "/llvm_cmake_gcc")115 !26 = !DIBasicType(name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)116 !27 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !23, entity: !28, file: !1, line: 43)117 !28 = !DIDerivedType(tag: DW_TAG_typedef, name: "ptrdiff_t", scope: !10, file: !25, line: 156, baseType: !29)118 !29 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)119 !30 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !10, entity: !6, file: !1, line: 55)120 !31 = !{i32 2, !"Dwarf Version", i32 4}121 !32 = !{i32 2, !"Debug Info Version", i32 3}122 !33 = !{!"clang version 3.5.0 (209308)"}123 !34 = distinct !DISubprogram(name: "parse_range", linkageName: "_Z11parse_rangeRyS_Ss", scope: !1, file: !1, line: 3, type: !35, isLocal: false, isDefinition: true, scopeLine: 4, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)124 !35 = !DISubroutineType(types: !36)125 !36 = !{null, !37, !37, !39}126 !37 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !38)127 !38 = !DIBasicType(name: "long long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)128 !39 = !DIDerivedType(tag: DW_TAG_typedef, name: "string", scope: !10, file: !40, line: 65, baseType: !8)129 !40 = !DIFile(filename: "/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/bits/stringfwd.h", directory: "/llvm_cmake_gcc")130 !41 = !DILocalVariable(name: "offset", arg: 1, scope: !34, file: !1, line: 3, type: !37)131 !42 = !DILocation(line: 3, scope: !34)132 !43 = !DILocalVariable(name: "limit", arg: 2, scope: !34, file: !1, line: 3, type: !37)133 !44 = !DILocalVariable(name: "range", arg: 3, scope: !34, file: !1, line: 4, type: !39)134 !45 = !DILocation(line: 4, scope: !34)135 !46 = !DILocation(line: 5, scope: !47)136 !47 = distinct !DILexicalBlock(scope: !34, file: !1, line: 5)137 !48 = !DILocation(line: 5, scope: !49)138 !49 = distinct !DILexicalBlock(scope: !47, file: !1, line: 5)139 !50 = !DILocation(line: 6, scope: !47)140 !51 = !DILocation(line: 7, scope: !34)141 !52 = !DILocation(line: 8, scope: !34)142 !53 = !DILocation(line: 9, scope: !34)143 144...145---146name: _Z11parse_rangeRyS_Ss147alignment: 16148tracksRegLiveness: true149liveins: 150 - { reg: '$rdi' }151 - { reg: '$rsi' }152 - { reg: '$rdx' }153frameInfo: 154 stackSize: 40155 offsetAdjustment: -32156 maxAlignment: 8157 adjustsStack: true158 hasCalls: true159 maxCallFrameSize: 0160fixedStack: 161 - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default }162stack: 163 - { id: 0, name: offset.addr, offset: -24, size: 8, alignment: 8, stack-id: default,164 debug-info-variable: '!41', debug-info-expression: '!DIExpression()', 165 debug-info-location: '!42' }166 - { id: 1, name: limit.addr, offset: -32, size: 8, alignment: 8, stack-id: default,167 debug-info-variable: '!43', debug-info-expression: '!DIExpression()', 168 debug-info-location: '!42' }169 - { id: 2, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default }170 - { id: 3, type: spill-slot, offset: -48, size: 8, alignment: 8, stack-id: default }171body: |172 bb.0.entry:173 liveins: $rdi, $rsi, $rdx174 175 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp176 CFI_INSTRUCTION def_cfa_offset 16177 CFI_INSTRUCTION offset $rbp, -16178 $rbp = frame-setup MOV64rr $rsp179 CFI_INSTRUCTION def_cfa_register $rbp180 $rsp = frame-setup SUB64ri8 $rsp, 32, implicit-def dead $eflags181 $eax = XOR32rr undef $eax, undef $eax, implicit-def $eflags, implicit-def $rax182 MOV64mr $rbp, 1, $noreg, -8, $noreg, killed renamable $rdi :: (store (s64) into %ir.offset.addr)183 MOV64mr $rbp, 1, $noreg, -16, $noreg, killed renamable $rsi :: (store (s64) into %ir.limit.addr)184 DBG_VALUE renamable $rdx, 0, !44, !DIExpression(DW_OP_deref), debug-location !45185 $rdi = MOV64rr $rdx, debug-location !46186 $rsi = MOV64rr killed $rax, debug-location !46187 $eax = MOV32ri 6, implicit-def $rax, debug-location !46188 MOV64mr $rbp, 1, $noreg, -24, $noreg, killed $rdx :: (store (s64) into %stack.2)189 DBG_VALUE $rbp, 0, !44, !DIExpression(DW_OP_constu, 24, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !45190 $rdx = MOV64rr killed $rax, debug-location !46191 renamable $rcx = MOV64ri @.str, debug-location !46192 CALL64pcrel32 @_ZNKSs7compareEmmPKc, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit killed $rsi, implicit killed $rdx, implicit killed $rcx, implicit-def $eax, debug-location !46193 CMP32ri8 killed renamable $eax, 0, implicit-def $eflags, debug-location !46194 JCC_1 %bb.2, 5, implicit $eflags, debug-location !46195 196 bb.1.lor.lhs.false:197 DBG_VALUE $rbp, 0, !44, !DIExpression(DW_OP_constu, 24, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !45198 $rdi = MOV64rm $rbp, 1, $noreg, -24, $noreg :: (load (s64) from %stack.2)199 $esi = MOV32ri 6, implicit-def $rsi, debug-location !48200 CALL64pcrel32 @_ZNSsixEm, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit killed $rsi, implicit-def $rax, debug-location !48201 renamable $ecx = MOVSX32rm8 killed renamable $rax, 1, $noreg, 0, $noreg, debug-location !48 :: (load (s8) from %ir.call1)202 CMP32ri8 killed renamable $ecx, 45, implicit-def $eflags, debug-location !48203 JCC_1 %bb.3, 5, implicit $eflags, debug-location !48204 205 bb.2.if.then:206 DBG_VALUE $rbp, 0, !44, !DIExpression(DW_OP_constu, 24, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !45207 renamable $rax = MOV64rm $rbp, 1, $noreg, -8, $noreg, debug-location !50 :: (load (s64) from %ir.offset.addr)208 MOV64mi32 killed renamable $rax, 1, $noreg, 0, $noreg, 1, debug-location !50 :: (store (s64) into %ir.1)209 210 bb.3.if.end:211 DBG_VALUE $rbp, 0, !44, !DIExpression(DW_OP_constu, 24, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !45212 $esi = XOR32rr undef $esi, undef $esi, implicit-def $eflags, implicit-def $rsi213 $rdi = MOV64rm $rbp, 1, $noreg, -24, $noreg :: (load (s64) from %stack.2)214 $edx = MOV32ri 6, implicit-def $rdx, debug-location !51215 CALL64pcrel32 @_ZNSs5eraseEmm, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit killed $rsi, implicit killed $rdx, implicit-def $rax, debug-location !51216 renamable $rdx = MOV64rm $rbp, 1, $noreg, -16, $noreg, debug-location !52 :: (load (s64) from %ir.limit.addr)217 MOV64mi32 killed renamable $rdx, 1, $noreg, 0, $noreg, 2, debug-location !52 :: (store (s64) into %ir.2)218 MOV64mr $rbp, 1, $noreg, -32, $noreg, killed $rax :: (store (s64) into %stack.3)219 $rsp = frame-destroy ADD64ri8 $rsp, 32, implicit-def dead $eflags, debug-location !53220 $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !53221 CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !53222 RET64 debug-location !53223 224...225