1# RUN: llc -mtriple i386 -start-before=greedy -stop-after=livedebugvars %s -o - | FileCheck %s 2 3# There should be multiple debug values for this variable after regalloc. The 4# value has been spilled, but we shouldn't lose track of the location because 5# of this. 6 7# CHECK-COUNT-4: DBG_VALUE $ebp, 0, !6, !DIExpression(DW_OP_constu, 16, DW_OP_minus), debug-location !10 8 9--- | 10 11 define void @main() #0 !dbg !4 { 12 entry: 13 #dbg_value(i32 undef, !6, !DIExpression(), !10) 14 ret void 15 } 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: main 38alignment: 16 39tracksRegLiveness: true 40hasWinCFI: false 41noPhis: true 42fixedStack: 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 $eflags 63 TEST32rr %2, %2, implicit-def $eflags 64 %3.sub_8bit:gr32_abcd = SETCCr 5, implicit $eflags 65 %4:gr32 = COPY %2 66 %4:gr32 = SAR32ri %4, 1, implicit-def dead $eflags 67 %5:gr32 = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.1) 68 %6:gr32 = MOV32r0 implicit-def dead $eflags 69 JMP_1 %bb.2 70 71 bb.1: 72 successors: %bb.4(0x30000000), %bb.3(0x50000000) 73 74 DBG_VALUE %3, $noreg, !6, !DIExpression(), debug-location !10 75 TEST32rr %3, %3, implicit-def $eflags 76 JCC_1 %bb.4, 4, implicit $eflags 77 JMP_1 %bb.3 78 79 bb.2: 80 successors: %bb.1(0x04000000), %bb.2(0x7c000000) 81 82 %6:gr32 = XOR32rr %6, %0, implicit-def dead $eflags 83 %6:gr32 = SAR32ri %6, 2, implicit-def dead $eflags 84 %6:gr32 = XOR32rr %6, %4, implicit-def dead $eflags 85 %6:gr32 = XOR32rr %6, %5, implicit-def dead $eflags 86 %6:gr32 = XOR32rr %6, %2, implicit-def dead $eflags 87 TEST8ri %1, 1, implicit-def $eflags 88 JCC_1 %bb.1, 5, implicit $eflags 89 JMP_1 %bb.2 90 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 0 99 100... 101