| --- | |
| ; RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s |
| ; Created from: |
| ; void sink(int a); |
| ; void __attribute((always_inline)) f(int a) { sink(a); } |
| ; void foo(int i) { |
| ; f(i); |
| ; if (i) |
| ; f(i); |
| ; f(i); |
| ; } |
| ; |
| ; This test verifies that LiveDebugValues doesn't propagate DBG_VALUEs into |
| ; basic blocks that are beyond the scope of the source variable. |
| ; |
| ; CHECK: ![[F_SP:[0-9]+]] = distinct !DISubprogram(name: "f", {{.*}}) |
| ; CHECK: ![[A_VAR:[0-9]+]] = !DILocalVariable(name: "a",{{.*}}) |
| ; CHECK: ![[I_VAR:[0-9]+]] = !DILocalVariable(name: "i",{{.*}}) |
| ; CHECK: ![[I_LOC:[0-9]+]] = !DILocation(line: 4, column: 14, scope: !{{[0-9]+}}) |
| ; CHECK: ![[INLCS1:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS1:[0-9]+]]) |
| ; CHECK: ![[CS1]] = distinct !DILocation(line: 5, column: 3, scope: !{{[0-9]+}}) |
| ; CHECK: ![[INLCS2:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS2:[0-9]+]]) |
| ; CHECK: ![[CS2]] = distinct !DILocation(line: 7, column: 5, scope: !{{[0-9]+}}) |
| ; CHECK: ![[INLCS3:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS3:[0-9]+]]) |
| ; CHECK: ![[CS3]] = distinct !DILocation(line: 8, column: 3, scope: !{{[0-9]+}}) |
| ; |
| ; CHECK: bb.1.if.then: |
| ; CHECK: DBG_VALUE $ebx, $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]] |
| ; CHECK-NOT: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location |
| ; CHECK: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS2]] |
| ; CHECK: bb.2.if.end: |
| ; CHECK: DBG_VALUE $ebx, $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]] |
| ; CHECK-NOT: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location |
| ; CHECK: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS3]] |
| ; |
| ; ModuleID = 'livedebugvalues-limit.ll' |
| source_filename = "livedebugvalues-limit.c" |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx" |
| |
| ; Function Attrs: alwaysinline nounwind ssp uwtable |
| define void @f(i32 %a) local_unnamed_addr #0 !dbg !7 { |
| entry: |
| tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !13), !dbg !14 |
| tail call void @sink(i32 %a) #4, !dbg !15 |
| ret void, !dbg !16 |
| } |
| |
| declare void @sink(i32) local_unnamed_addr |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define void @foo(i32 %i) local_unnamed_addr #2 !dbg !17 { |
| entry: |
| tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !19, metadata !13), !dbg !20 |
| tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !21 |
| tail call void @sink(i32 %i) #4, !dbg !23 |
| %tobool = icmp eq i32 %i, 0, !dbg !24 |
| br i1 %tobool, label %if.end, label %if.then, !dbg !26 |
| |
| if.then: ; preds = %entry |
| tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !27 |
| tail call void @sink(i32 %i) #4, !dbg !29 |
| br label %if.end, !dbg !30 |
| |
| if.end: ; preds = %if.then, %entry |
| tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !12, metadata !13) #4, !dbg !31 |
| tail call void @sink(i32 %i) #4, !dbg !33 |
| ret void, !dbg !34 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.stackprotector(i8*, i8**) #4 |
| |
| attributes #0 = { alwaysinline nounwind ssp uwtable } |
| attributes #2 = { nounwind ssp uwtable } |
| attributes #3 = { nounwind readnone } |
| attributes #4 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !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) |
| !1 = !DIFile(filename: "livedebugvalues-limit.c", directory: "/Volumes/Fusion/Data/llvm") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"PIC Level", i32 2} |
| !6 = !{!"clang version 4.0.0 (trunk 281923) (llvm/trunk 281916)"} |
| !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) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{null, !10} |
| !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !11 = !{!12} |
| !12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 3, type: !10) |
| !13 = !DIExpression() |
| !14 = !DILocation(line: 3, column: 41, scope: !7) |
| !15 = !DILocation(line: 3, column: 46, scope: !7) |
| !16 = !DILocation(line: 3, column: 55, scope: !7) |
| !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) |
| !18 = !{!19} |
| !19 = !DILocalVariable(name: "i", arg: 1, scope: !17, file: !1, line: 4, type: !10) |
| !20 = !DILocation(line: 4, column: 14, scope: !17) |
| !21 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !22) |
| !22 = distinct !DILocation(line: 5, column: 3, scope: !17) |
| !23 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !22) |
| !24 = !DILocation(line: 6, column: 7, scope: !25) |
| !25 = distinct !DILexicalBlock(scope: !17, file: !1, line: 6, column: 7) |
| !26 = !DILocation(line: 6, column: 7, scope: !17) |
| !27 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !28) |
| !28 = distinct !DILocation(line: 7, column: 5, scope: !25) |
| !29 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !28) |
| !30 = !DILocation(line: 7, column: 5, scope: !25) |
| !31 = !DILocation(line: 3, column: 41, scope: !7, inlinedAt: !32) |
| !32 = distinct !DILocation(line: 8, column: 3, scope: !17) |
| !33 = !DILocation(line: 3, column: 46, scope: !7, inlinedAt: !32) |
| !34 = !DILocation(line: 9, column: 1, scope: !17) |
| |
| ... |
| --- |
| name: f |
| alignment: 16 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '$edi' } |
| calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx', |
| '$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15', |
| '$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d', |
| '$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ] |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 8 |
| offsetAdjustment: 0 |
| maxAlignment: 0 |
| adjustsStack: false |
| hasCalls: false |
| maxCallFrameSize: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| fixedStack: |
| - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16 } |
| body: | |
| bb.0.entry: |
| liveins: $edi, $rbp |
| |
| 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 |
| DBG_VALUE $edi, _, !12, !13, debug-location !14 |
| $rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !15 |
| TAILJMPd64 @sink, csr_64, implicit $rsp, implicit $rsp, implicit $edi, debug-location !15 |
| |
| ... |
| --- |
| name: foo |
| alignment: 16 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '$edi' } |
| calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx', |
| '$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15', |
| '$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d', |
| '$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ] |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 24 |
| offsetAdjustment: -8 |
| maxAlignment: 0 |
| adjustsStack: true |
| hasCalls: true |
| maxCallFrameSize: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| fixedStack: |
| - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$rbx' } |
| - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16 } |
| body: | |
| bb.0.entry: |
| successors: %bb.2.if.end, %bb.1.if.then |
| liveins: $edi, $rbx, $rbp |
| |
| 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 |
| frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION offset $rbx, -24 |
| DBG_VALUE $edi, _, !19, !13, debug-location !20 |
| $ebx = MOV32rr $edi |
| DBG_VALUE $ebx, _, !12, !13, debug-location !21 |
| DBG_VALUE $ebx, _, !19, !13, debug-location !20 |
| CALL64pcrel32 @sink, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !23 |
| TEST32rr $ebx, $ebx, implicit-def $eflags, debug-location !24 |
| JCC_1 %bb.2.if.end, 4, implicit $eflags |
| |
| bb.1.if.then: |
| successors: %bb.2.if.end |
| liveins: $ebx, $rbp |
| |
| DBG_VALUE $ebx, _, !19, !13, debug-location !20 |
| DBG_VALUE $ebx, _, !12, !13, debug-location !27 |
| $edi = MOV32rr $ebx, debug-location !29 |
| CALL64pcrel32 @sink, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !29 |
| |
| bb.2.if.end: |
| liveins: $ebx, $rbp |
| |
| DBG_VALUE $ebx, _, !19, !13, debug-location !20 |
| $edi = MOV32rr killed $ebx, debug-location !33 |
| $rsp = ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !33 |
| DBG_VALUE $ebx, _, !12, !13, debug-location !31 |
| $rbx = POP64r implicit-def $rsp, implicit $rsp, debug-location !33 |
| $rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !33 |
| TAILJMPd64 @sink, csr_64, implicit $rsp, implicit $rsp, implicit $edi, debug-location !33 |
| |
| ... |
