# RUN: llc -mtriple i386 -start-before=greedy -stop-after=livedebugvars %s -o - | FileCheck %s
# There should be multiple debug values for this variable after regalloc. The
# value has been spilled, but we shouldn't lose track of the location because
# of this.
# CHECK-COUNT-4: DBG_VALUE $ebp, 0, !6, !DIExpression(DW_OP_constu, 16, DW_OP_minus), debug-location !10
--- |
define void @main() #0 !dbg !4 {
entry:
#dbg_value(i32 undef, !6, !DIExpression(), !10)
ret void
}
attributes #0 = { "frame-pointer"="all" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3}
!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)
!1 = !DIFile(filename: "xx.c", directory: "/path", checksumkind: CSK_MD5, checksum: "c4b2fc62bca9171ad484c91fb78b8842")
!2 = !{}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 20, type: !5, scopeLine: 20, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
!5 = !DISubroutineType(types: !2)
!6 = !DILocalVariable(name: "flag", arg: 2, scope: !7, file: !1, line: 8, type: !9)
!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)
!8 = distinct !DISubroutineType(types: !2)
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !DILocation(line: 0, scope: !7, inlinedAt: !11)
!11 = distinct !DILocation(line: 28, column: 3, scope: !4)
...
---
name: main
alignment: 16
tracksRegLiveness: true
hasWinCFI: false
noPhis: true
fixedStack:
- { id: 0, type: default, offset: 0, size: 4, alignment: 4, stack-id: default,
isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,
isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 2, type: default, offset: 8, size: 1, alignment: 4, stack-id: default,
isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 3, type: default, offset: 12, size: 4, alignment: 4, stack-id: default,
isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
body: |
bb.0:
successors: %bb.2(0x80000000)
%0:gr32 = MOV32rm %fixed-stack.3, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.3)
%1:gr8 = MOV8rm %fixed-stack.2, 1, $noreg, 0, $noreg :: (load (s8) from %fixed-stack.2, align 4)
%2:gr32 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.0)
%3:gr32_abcd = MOV32r0 implicit-def dead $eflags
TEST32rr %2, %2, implicit-def $eflags
%3.sub_8bit:gr32_abcd = SETCCr 5, implicit $eflags
%4:gr32 = COPY %2
%4:gr32 = SAR32ri %4, 1, implicit-def dead $eflags
%5:gr32 = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.1)
%6:gr32 = MOV32r0 implicit-def dead $eflags
JMP_1 %bb.2
bb.1:
successors: %bb.4(0x30000000), %bb.3(0x50000000)
DBG_VALUE %3, $noreg, !6, !DIExpression(), debug-location !10
TEST32rr %3, %3, implicit-def $eflags
JCC_1 %bb.4, 4, implicit $eflags
JMP_1 %bb.3
bb.2:
successors: %bb.1(0x04000000), %bb.2(0x7c000000)
%6:gr32 = XOR32rr %6, %0, implicit-def dead $eflags
%6:gr32 = SAR32ri %6, 2, implicit-def dead $eflags
%6:gr32 = XOR32rr %6, %4, implicit-def dead $eflags
%6:gr32 = XOR32rr %6, %5, implicit-def dead $eflags
%6:gr32 = XOR32rr %6, %2, implicit-def dead $eflags
TEST8ri %1, 1, implicit-def $eflags
JCC_1 %bb.1, 5, implicit $eflags
JMP_1 %bb.2
bb.3:
successors: %bb.4(0x80000000)
MOV32mi $noreg, 1, $noreg, 4, $noreg, 0 :: (store (s32) into `ptr null` + 4)
MOV32mi $noreg, 1, $noreg, 0, $noreg, 0 :: (store (s32) into `ptr null`)
bb.4:
RET 0
...
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