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1--- |2 ; RUN: llc -run-pass=livedebugvalues -o - %s | FileCheck %s3 ; Created from:4 ; void sink(int a);5 ; void __attribute((always_inline)) f(int a) { sink(a); }6 ; void foo(int i) {7 ; f(i);8 ; if (i)9 ; f(i);10 ; f(i);11 ; }12 ;13 ; This test verifies that LiveDebugValues doesn't propagate DBG_VALUEs into14 ; basic blocks that are beyond the scope of the source variable.15 ;16 ; CHECK: ![[F_SP:[0-9]+]] = distinct !DISubprogram(name: "f", {{.*}})17 ; CHECK: ![[A_VAR:[0-9]+]] = !DILocalVariable(name: "a",{{.*}})18 ; CHECK: ![[I_VAR:[0-9]+]] = !DILocalVariable(name: "i",{{.*}})19 ; CHECK: ![[I_LOC:[0-9]+]] = !DILocation(line: 4, column: 14, scope: !{{[0-9]+}})20 ; CHECK: ![[INLCS1:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS1:[0-9]+]])21 ; CHECK: ![[CS1]] = distinct !DILocation(line: 5, column: 3, scope: !{{[0-9]+}})22 ; CHECK: ![[INLCS2:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS2:[0-9]+]])23 ; CHECK: ![[CS2]] = distinct !DILocation(line: 7, column: 5, scope: !{{[0-9]+}})24 ; CHECK: ![[INLCS3:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS3:[0-9]+]])25 ; CHECK: ![[CS3]] = distinct !DILocation(line: 8, column: 3, scope: !{{[0-9]+}})26 ;27 ; CHECK: bb.1.if.then:28 ; CHECK: DBG_VALUE $ebx, $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]29 ; CHECK-NOT: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location30 ; CHECK: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS2]]31 ; CHECK: bb.2.if.end:32 ; CHECK: DBG_VALUE $ebx, $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]33 ; CHECK-NOT: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location34 ; CHECK: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS3]]35 ;36 ; ModuleID = 'livedebugvalues-limit.ll'37 source_filename = "livedebugvalues-limit.c"38 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"39 target triple = "x86_64-apple-macosx"40 41 ; Function Attrs: alwaysinline nounwind ssp uwtable42 define void @f(i32 %a) local_unnamed_addr #0 !dbg !7 {43 entry:44 tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !13), !dbg !1445 tail call void @sink(i32 %a) #4, !dbg !1546 ret void, !dbg !1647 }48 49 declare void @sink(i32) local_unnamed_addr50 51 ; Function Attrs: nounwind ssp uwtable52 define void @foo(i32 %i) local_unnamed_addr #2 !dbg !17 {53 entry:54 tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !19, metadata !13), !dbg !2055 tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !2156 tail call void @sink(i32 %i) #4, !dbg !2357 %tobool = icmp eq i32 %i, 0, !dbg !2458 br i1 %tobool, label %if.end, label %if.then, !dbg !2659 60 if.then: ; preds = %entry61 tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !2762 tail call void @sink(i32 %i) #4, !dbg !2963 br label %if.end, !dbg !3064 65 if.end: ; preds = %if.then, %entry66 tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !3167 tail call void @sink(i32 %i) #4, !dbg !3368 ret void, !dbg !3469 }70 71 ; Function Attrs: nounwind readnone72 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #373 74 ; Function Attrs: nounwind75 declare void @llvm.stackprotector(ptr, ptr) #476 77 attributes #0 = { alwaysinline nounwind ssp uwtable }78 attributes #2 = { nounwind ssp uwtable }79 attributes #3 = { nounwind readnone }80 attributes #4 = { nounwind }81 82 !llvm.dbg.cu = !{!0}83 !llvm.module.flags = !{!3, !4, !5}84 !llvm.ident = !{!6}85 86 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 281923) (llvm/trunk 281916)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)87 !1 = !DIFile(filename: "livedebugvalues-limit.c", directory: "/Volumes/Fusion/Data/llvm")88 !2 = !{}89 !3 = !{i32 2, !"Dwarf Version", i32 4}90 !4 = !{i32 2, !"Debug Info Version", i32 3}91 !5 = !{i32 1, !"PIC Level", i32 2}92 !6 = !{!"clang version 4.0.0 (trunk 281923) (llvm/trunk 281916)"}93 !7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)94 !8 = !DISubroutineType(types: !9)95 !9 = !{null, !10}96 !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)97 !11 = !{!12}98 !12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 3, type: !10)99 !13 = !DIExpression()100 !14 = !DILocation(line: 3, column: 41, scope: !7)101 !15 = !DILocation(line: 3, column: 46, scope: !7)102 !16 = !DILocation(line: 3, column: 55, scope: !7)103 !17 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, type: !8, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !18)104 !18 = !{!19}105 !19 = !DILocalVariable(name: "i", arg: 1, scope: !17, file: !1, line: 4, type: !10)106 !20 = !DILocation(line: 4, column: 14, scope: !17)107 !21 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !22)108 !22 = distinct !DILocation(line: 5, column: 3, scope: !17)109 !23 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !22)110 !24 = !DILocation(line: 6, column: 7, scope: !25)111 !25 = distinct !DILexicalBlock(scope: !17, file: !1, line: 6, column: 7)112 !26 = !DILocation(line: 6, column: 7, scope: !17)113 !27 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !28)114 !28 = distinct !DILocation(line: 7, column: 5, scope: !25)115 !29 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !28)116 !30 = !DILocation(line: 7, column: 5, scope: !25)117 !31 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !32)118 !32 = distinct !DILocation(line: 8, column: 3, scope: !17)119 !33 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !32)120 !34 = !DILocation(line: 9, column: 1, scope: !17)121 122...123---124name: f125alignment: 16126exposesReturnsTwice: false127legalized: false128regBankSelected: false129selected: false130tracksRegLiveness: true131liveins: 132 - { reg: '$edi' }133calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx', 134 '$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15', 135 '$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d', 136 '$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ]137frameInfo: 138 isFrameAddressTaken: false139 isReturnAddressTaken: false140 hasStackMap: false141 hasPatchPoint: false142 stackSize: 8143 offsetAdjustment: 0144 maxAlignment: 0145 adjustsStack: false146 hasCalls: false147 maxCallFrameSize: 0148 hasOpaqueSPAdjustment: false149 hasVAStart: false150 hasMustTailInVarArgFunc: false151fixedStack: 152 - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16 }153body: |154 bb.0.entry:155 liveins: $edi, $rbp156 157 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp158 CFI_INSTRUCTION def_cfa_offset 16159 CFI_INSTRUCTION offset $rbp, -16160 $rbp = frame-setup MOV64rr $rsp161 CFI_INSTRUCTION def_cfa_register $rbp162 DBG_VALUE $edi, _, !12, !13, debug-location !14163 $rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !15164 TAILJMPd64 @sink, csr_64, implicit $rsp, implicit $rsp, implicit $edi, debug-location !15165 166...167---168name: foo169alignment: 16170exposesReturnsTwice: false171legalized: false172regBankSelected: false173selected: false174tracksRegLiveness: true175liveins: 176 - { reg: '$edi' }177calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx', 178 '$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15', 179 '$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d', 180 '$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ]181frameInfo: 182 isFrameAddressTaken: false183 isReturnAddressTaken: false184 hasStackMap: false185 hasPatchPoint: false186 stackSize: 24187 offsetAdjustment: -8188 maxAlignment: 0189 adjustsStack: true190 hasCalls: true191 maxCallFrameSize: 0192 hasOpaqueSPAdjustment: false193 hasVAStart: false194 hasMustTailInVarArgFunc: false195fixedStack: 196 - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$rbx' }197 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16 }198body: |199 bb.0.entry:200 successors: %bb.2.if.end, %bb.1.if.then201 liveins: $edi, $rbx, $rbp202 203 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp204 CFI_INSTRUCTION def_cfa_offset 16205 CFI_INSTRUCTION offset $rbp, -16206 $rbp = frame-setup MOV64rr $rsp207 CFI_INSTRUCTION def_cfa_register $rbp208 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp209 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp210 CFI_INSTRUCTION offset $rbx, -24211 DBG_VALUE $edi, _, !19, !13, debug-location !20212 $ebx = MOV32rr $edi213 DBG_VALUE $ebx, _, !12, !13, debug-location !21214 DBG_VALUE $ebx, _, !19, !13, debug-location !20215 CALL64pcrel32 @sink, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !23216 TEST32rr $ebx, $ebx, implicit-def $eflags, debug-location !24217 JCC_1 %bb.2.if.end, 4, implicit $eflags218 219 bb.1.if.then:220 successors: %bb.2.if.end221 liveins: $ebx, $rbp222 223 DBG_VALUE $ebx, _, !19, !13, debug-location !20224 DBG_VALUE $ebx, _, !12, !13, debug-location !27225 $edi = MOV32rr $ebx, debug-location !29226 CALL64pcrel32 @sink, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !29227 228 bb.2.if.end:229 liveins: $ebx, $rbp230 231 DBG_VALUE $ebx, _, !19, !13, debug-location !20232 $edi = MOV32rr killed $ebx, debug-location !33233 $rsp = ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !33234 DBG_VALUE $ebx, _, !12, !13, debug-location !31235 $rbx = POP64r implicit-def $rsp, implicit $rsp, debug-location !33236 $rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !33237 TAILJMPd64 @sink, csr_64, implicit $rsp, implicit $rsp, implicit $edi, debug-location !33238 239...240