| # RUN: llc -o - %s -start-after=patchable-function -O0 | FileCheck %s |
| |
| # Generated from the source file pr19307.cc: |
| # #include <string> |
| # void parse_range(unsigned long long &offset, unsigned long long &limit, |
| # std::string range) { |
| # if (range.compare(0, 6, "items=") != 0 || range[6] == '-') |
| # offset = 1; |
| # range.erase(0, 6); |
| # limit = 2; |
| # } |
| # with "clang++ -S -emit-llvm -O0 -g pr19307.cc" |
| # |
| # Location of "range" string is spilled from %rdx to stack and is |
| # addressed via %rbp. |
| # CHECK: movq %rdx, {{[-0-9]+}}(%rbp) |
| # CHECK-NEXT: [[START_LABEL:.Ltmp[0-9]+]]: |
| # This location should be valid until the end of the function. |
| # |
| # Verify that we have proper range in debug_loc section: |
| # CHECK: .Ldebug_loc{{[0-9]+}}: |
| # CHECK: DW_OP_breg1 |
| # CHECK: .quad [[START_LABEL]]-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Lfunc_end0-.Lfunc_begin0 |
| # CHECK: DW_OP_breg6 |
| # CHECK: DW_OP_deref |
| --- | |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %"class.std::basic_string" = type { %"struct.std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" } |
| %"struct.std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" = type { i8* } |
| |
| @.str = private unnamed_addr constant [7 x i8] c"items=\00", align 1 |
| |
| ; Function Attrs: uwtable |
| define void @_Z11parse_rangeRyS_Ss(i64* %offset, i64* %limit, %"class.std::basic_string"* %range) #0 !dbg !34 { |
| entry: |
| %offset.addr = alloca i64*, align 8 |
| %limit.addr = alloca i64*, align 8 |
| store i64* %offset, i64** %offset.addr, align 8 |
| call void @llvm.dbg.declare(metadata i64** %offset.addr, metadata !41, metadata !DIExpression()), !dbg !42 |
| store i64* %limit, i64** %limit.addr, align 8 |
| call void @llvm.dbg.declare(metadata i64** %limit.addr, metadata !43, metadata !DIExpression()), !dbg !42 |
| call void @llvm.dbg.declare(metadata %"class.std::basic_string"* %range, metadata !44, metadata !DIExpression(DW_OP_deref)), !dbg !45 |
| %call = call i32 @_ZNKSs7compareEmmPKc(%"class.std::basic_string"* %range, i64 0, i64 6, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i32 0, i32 0)), !dbg !46 |
| %cmp = icmp ne i32 %call, 0, !dbg !46 |
| br i1 %cmp, label %if.then, label %lor.lhs.false, !dbg !46 |
| |
| lor.lhs.false: ; preds = %entry |
| %call1 = call i8* @_ZNSsixEm(%"class.std::basic_string"* %range, i64 6), !dbg !48 |
| %0 = load i8, i8* %call1, !dbg !48 |
| %conv = sext i8 %0 to i32, !dbg !48 |
| %cmp2 = icmp eq i32 %conv, 45, !dbg !48 |
| br i1 %cmp2, label %if.then, label %if.end, !dbg !48 |
| |
| if.then: ; preds = %lor.lhs.false, %entry |
| %1 = load i64*, i64** %offset.addr, align 8, !dbg !50 |
| store i64 1, i64* %1, align 8, !dbg !50 |
| br label %if.end, !dbg !50 |
| |
| if.end: ; preds = %if.then, %lor.lhs.false |
| %call3 = call %"class.std::basic_string"* @_ZNSs5eraseEmm(%"class.std::basic_string"* %range, i64 0, i64 6), !dbg !51 |
| %2 = load i64*, i64** %limit.addr, align 8, !dbg !52 |
| store i64 2, i64* %2, align 8, !dbg !52 |
| ret void, !dbg !53 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| declare i32 @_ZNKSs7compareEmmPKc(%"class.std::basic_string"*, i64, i64, i8*) #2 |
| |
| declare i8* @_ZNSsixEm(%"class.std::basic_string"*, i64) #2 |
| |
| declare %"class.std::basic_string"* @_ZNSs5eraseEmm(%"class.std::basic_string"*, i64, i64) #2 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.stackprotector(i8*, i8**) #3 |
| |
| 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" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nounwind readnone speculatable } |
| attributes #2 = { "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #3 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!31, !32} |
| !llvm.ident = !{!33} |
| |
| !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) |
| !1 = !DIFile(filename: "pr19307.cc", directory: "/llvm_cmake_gcc") |
| !2 = !{} |
| !3 = !{!4, !6, !8} |
| !4 = !DICompositeType(tag: DW_TAG_structure_type, file: !5, line: 83, flags: DIFlagFwdDecl, identifier: "_ZTS11__mbstate_t") |
| !5 = !DIFile(filename: "/usr/include/wchar.h", directory: "/llvm_cmake_gcc") |
| !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "lconv", file: !7, line: 54, flags: DIFlagFwdDecl, identifier: "_ZTS5lconv") |
| !7 = !DIFile(filename: "/usr/include/locale.h", directory: "/llvm_cmake_gcc") |
| !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") |
| !9 = !DIFile(filename: "/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/bits/basic_string.tcc", directory: "/llvm_cmake_gcc") |
| !10 = !DINamespace(name: "std", scope: null) |
| !11 = !{!12, !15, !18, !22, !27, !30} |
| !12 = !DIImportedEntity(tag: DW_TAG_imported_module, scope: !13, entity: !14, file: !1, line: 57) |
| !13 = !DINamespace(name: "__gnu_debug", scope: null) |
| !14 = !DINamespace(name: "__debug", scope: !10) |
| !15 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !10, entity: !16, file: !1, line: 66) |
| !16 = !DIDerivedType(tag: DW_TAG_typedef, name: "mbstate_t", file: !5, line: 106, baseType: !17) |
| !17 = !DIDerivedType(tag: DW_TAG_typedef, name: "__mbstate_t", file: !5, line: 95, baseType: !4) |
| !18 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !10, entity: !19, file: !1, line: 141) |
| !19 = !DIDerivedType(tag: DW_TAG_typedef, name: "wint_t", file: !20, line: 141, baseType: !21) |
| !20 = !DIFile(filename: "/llvm_cmake_gcc/bin/../lib/clang/3.5.0/include/stddef.h", directory: "/llvm_cmake_gcc") |
| !21 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) |
| !22 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !23, entity: !24, file: !1, line: 42) |
| !23 = !DINamespace(name: "__gnu_cxx", scope: null) |
| !24 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", scope: !10, file: !25, line: 155, baseType: !26) |
| !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") |
| !26 = !DIBasicType(name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned) |
| !27 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !23, entity: !28, file: !1, line: 43) |
| !28 = !DIDerivedType(tag: DW_TAG_typedef, name: "ptrdiff_t", scope: !10, file: !25, line: 156, baseType: !29) |
| !29 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) |
| !30 = !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !10, entity: !6, file: !1, line: 55) |
| !31 = !{i32 2, !"Dwarf Version", i32 4} |
| !32 = !{i32 2, !"Debug Info Version", i32 3} |
| !33 = !{!"clang version 3.5.0 (209308)"} |
| !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) |
| !35 = !DISubroutineType(types: !36) |
| !36 = !{null, !37, !37, !39} |
| !37 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !38) |
| !38 = !DIBasicType(name: "long long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned) |
| !39 = !DIDerivedType(tag: DW_TAG_typedef, name: "string", scope: !10, file: !40, line: 65, baseType: !8) |
| !40 = !DIFile(filename: "/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/bits/stringfwd.h", directory: "/llvm_cmake_gcc") |
| !41 = !DILocalVariable(name: "offset", arg: 1, scope: !34, file: !1, line: 3, type: !37) |
| !42 = !DILocation(line: 3, scope: !34) |
| !43 = !DILocalVariable(name: "limit", arg: 2, scope: !34, file: !1, line: 3, type: !37) |
| !44 = !DILocalVariable(name: "range", arg: 3, scope: !34, file: !1, line: 4, type: !39) |
| !45 = !DILocation(line: 4, scope: !34) |
| !46 = !DILocation(line: 5, scope: !47) |
| !47 = distinct !DILexicalBlock(scope: !34, file: !1, line: 5) |
| !48 = !DILocation(line: 5, scope: !49) |
| !49 = distinct !DILexicalBlock(scope: !47, file: !1, line: 5) |
| !50 = !DILocation(line: 6, scope: !47) |
| !51 = !DILocation(line: 7, scope: !34) |
| !52 = !DILocation(line: 8, scope: !34) |
| !53 = !DILocation(line: 9, scope: !34) |
| |
| ... |
| --- |
| name: _Z11parse_rangeRyS_Ss |
| alignment: 16 |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '$rdi' } |
| - { reg: '$rsi' } |
| - { reg: '$rdx' } |
| frameInfo: |
| stackSize: 40 |
| offsetAdjustment: -32 |
| maxAlignment: 8 |
| adjustsStack: true |
| hasCalls: true |
| maxCallFrameSize: 0 |
| fixedStack: |
| - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default } |
| stack: |
| - { id: 0, name: offset.addr, offset: -24, size: 8, alignment: 8, stack-id: default, |
| debug-info-variable: '!41', debug-info-expression: '!DIExpression()', |
| debug-info-location: '!42' } |
| - { id: 1, name: limit.addr, offset: -32, size: 8, alignment: 8, stack-id: default, |
| debug-info-variable: '!43', debug-info-expression: '!DIExpression()', |
| debug-info-location: '!42' } |
| - { id: 2, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default } |
| - { id: 3, type: spill-slot, offset: -48, size: 8, alignment: 8, stack-id: default } |
| body: | |
| bb.0.entry: |
| liveins: $rdi, $rsi, $rdx |
| |
| frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| CFI_INSTRUCTION offset $rbp, -16 |
| $rbp = frame-setup MOV64rr $rsp |
| CFI_INSTRUCTION def_cfa_register $rbp |
| $rsp = frame-setup SUB64ri8 $rsp, 32, implicit-def dead $eflags |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def $eflags, implicit-def $rax |
| MOV64mr $rbp, 1, $noreg, -8, $noreg, killed renamable $rdi :: (store (s64) into %ir.offset.addr) |
| MOV64mr $rbp, 1, $noreg, -16, $noreg, killed renamable $rsi :: (store (s64) into %ir.limit.addr) |
| DBG_VALUE renamable $rdx, 0, !44, !DIExpression(DW_OP_deref), debug-location !45 |
| $rdi = MOV64rr $rdx, debug-location !46 |
| $rsi = MOV64rr killed $rax, debug-location !46 |
| $eax = MOV32ri 6, implicit-def $rax, debug-location !46 |
| MOV64mr $rbp, 1, $noreg, -24, $noreg, killed $rdx :: (store (s64) into %stack.2) |
| DBG_VALUE $rbp, 0, !44, !DIExpression(DW_OP_constu, 24, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !45 |
| $rdx = MOV64rr killed $rax, debug-location !46 |
| renamable $rcx = MOV64ri @.str, debug-location !46 |
| 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 !46 |
| CMP32ri8 killed renamable $eax, 0, implicit-def $eflags, debug-location !46 |
| JCC_1 %bb.2, 5, implicit $eflags, debug-location !46 |
| |
| bb.1.lor.lhs.false: |
| DBG_VALUE $rbp, 0, !44, !DIExpression(DW_OP_constu, 24, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !45 |
| $rdi = MOV64rm $rbp, 1, $noreg, -24, $noreg :: (load (s64) from %stack.2) |
| $esi = MOV32ri 6, implicit-def $rsi, debug-location !48 |
| CALL64pcrel32 @_ZNSsixEm, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit killed $rsi, implicit-def $rax, debug-location !48 |
| renamable $ecx = MOVSX32rm8 killed renamable $rax, 1, $noreg, 0, $noreg, debug-location !48 :: (load (s8) from %ir.call1) |
| CMP32ri8 killed renamable $ecx, 45, implicit-def $eflags, debug-location !48 |
| JCC_1 %bb.3, 5, implicit $eflags, debug-location !48 |
| |
| bb.2.if.then: |
| DBG_VALUE $rbp, 0, !44, !DIExpression(DW_OP_constu, 24, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !45 |
| renamable $rax = MOV64rm $rbp, 1, $noreg, -8, $noreg, debug-location !50 :: (load (s64) from %ir.offset.addr) |
| MOV64mi32 killed renamable $rax, 1, $noreg, 0, $noreg, 1, debug-location !50 :: (store (s64) into %ir.1) |
| |
| bb.3.if.end: |
| DBG_VALUE $rbp, 0, !44, !DIExpression(DW_OP_constu, 24, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !45 |
| $esi = XOR32rr undef $esi, undef $esi, implicit-def $eflags, implicit-def $rsi |
| $rdi = MOV64rm $rbp, 1, $noreg, -24, $noreg :: (load (s64) from %stack.2) |
| $edx = MOV32ri 6, implicit-def $rdx, debug-location !51 |
| CALL64pcrel32 @_ZNSs5eraseEmm, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit killed $rsi, implicit killed $rdx, implicit-def $rax, debug-location !51 |
| renamable $rdx = MOV64rm $rbp, 1, $noreg, -16, $noreg, debug-location !52 :: (load (s64) from %ir.limit.addr) |
| MOV64mi32 killed renamable $rdx, 1, $noreg, 0, $noreg, 2, debug-location !52 :: (store (s64) into %ir.2) |
| MOV64mr $rbp, 1, $noreg, -32, $noreg, killed $rax :: (store (s64) into %stack.3) |
| $rsp = frame-destroy ADD64ri8 $rsp, 32, implicit-def dead $eflags, debug-location !53 |
| $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !53 |
| CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !53 |
| RET64 debug-location !53 |
| |
| ... |
