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1# RUN: llc -mtriple i386 -start-before=greedy -stop-after=livedebugvars %s -o - | FileCheck %s2 3# There should be multiple debug values for this variable after regalloc. The4# value has been spilled, but we shouldn't lose track of the location because5# of this.6 7# CHECK-COUNT-4: DBG_VALUE $ebp, 0, !6, !DIExpression(DW_OP_constu, 16, DW_OP_minus), debug-location !108 9--- |10 11 define void @main() #0 !dbg !4 {12 entry:13 #dbg_value(i32 undef, !6, !DIExpression(), !10)14 ret void15 }16 17 attributes #0 = { "frame-pointer"="all" }18 19 !llvm.dbg.cu = !{!0}20 !llvm.module.flags = !{!3}21 22 !0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 20.0.0git.prerel", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !2, splitDebugInlining: false, nameTableKind: None)23 !1 = !DIFile(filename: "xx.c", directory: "/path", checksumkind: CSK_MD5, checksum: "c4b2fc62bca9171ad484c91fb78b8842")24 !2 = !{}25 !3 = !{i32 2, !"Debug Info Version", i32 3}26 !4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 20, type: !5, scopeLine: 20, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)27 !5 = !DISubroutineType(types: !2)28 !6 = !DILocalVariable(name: "flag", arg: 2, scope: !7, file: !1, line: 8, type: !9)29 !7 = distinct !DISubprogram(name: "transparent_crc", scope: !1, file: !1, line: 8, type: !8, scopeLine: 8, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)30 !8 = distinct !DISubroutineType(types: !2)31 !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)32 !10 = !DILocation(line: 0, scope: !7, inlinedAt: !11)33 !11 = distinct !DILocation(line: 28, column: 3, scope: !4)34 35...36---37name: main38alignment: 1639tracksRegLiveness: true40hasWinCFI: false41noPhis: true42fixedStack:43 - { id: 0, type: default, offset: 0, size: 4, alignment: 4, stack-id: default, 44 isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,45 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }46 - { id: 1, type: default, offset: 4, size: 4, alignment: 4, stack-id: default, 47 isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,48 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }49 - { id: 2, type: default, offset: 8, size: 1, alignment: 4, stack-id: default, 50 isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,51 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }52 - { id: 3, type: default, offset: 12, size: 4, alignment: 4, stack-id: default, 53 isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,54 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }55body: |56 bb.0:57 successors: %bb.2(0x80000000)58 59 %0:gr32 = MOV32rm %fixed-stack.3, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.3)60 %1:gr8 = MOV8rm %fixed-stack.2, 1, $noreg, 0, $noreg :: (load (s8) from %fixed-stack.2, align 4)61 %2:gr32 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.0)62 %3:gr32_abcd = MOV32r0 implicit-def dead $eflags63 TEST32rr %2, %2, implicit-def $eflags64 %3.sub_8bit:gr32_abcd = SETCCr 5, implicit $eflags65 %4:gr32 = COPY %266 %4:gr32 = SAR32ri %4, 1, implicit-def dead $eflags67 %5:gr32 = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.1)68 %6:gr32 = MOV32r0 implicit-def dead $eflags69 JMP_1 %bb.270 71 bb.1:72 successors: %bb.4(0x30000000), %bb.3(0x50000000)73 74 DBG_VALUE %3, $noreg, !6, !DIExpression(), debug-location !1075 TEST32rr %3, %3, implicit-def $eflags76 JCC_1 %bb.4, 4, implicit $eflags77 JMP_1 %bb.378 79 bb.2:80 successors: %bb.1(0x04000000), %bb.2(0x7c000000)81 82 %6:gr32 = XOR32rr %6, %0, implicit-def dead $eflags83 %6:gr32 = SAR32ri %6, 2, implicit-def dead $eflags84 %6:gr32 = XOR32rr %6, %4, implicit-def dead $eflags85 %6:gr32 = XOR32rr %6, %5, implicit-def dead $eflags86 %6:gr32 = XOR32rr %6, %2, implicit-def dead $eflags87 TEST8ri %1, 1, implicit-def $eflags88 JCC_1 %bb.1, 5, implicit $eflags89 JMP_1 %bb.290 91 bb.3:92 successors: %bb.4(0x80000000)93 94 MOV32mi $noreg, 1, $noreg, 4, $noreg, 0 :: (store (s32) into `ptr null` + 4)95 MOV32mi $noreg, 1, $noreg, 0, $noreg, 0 :: (store (s32) into `ptr null`)96 97 bb.4:98 RET 099 100...101