| # RUN: llc -start-after=phi-node-elimination -stop-after=virtregrewriter %s -mtriple=x86_64-unknown-unknown -o - -experimental-debug-variable-locations | FileCheck %s |
| # RUN: llc -O0 -start-after=phi-node-elimination -stop-after=regallocfast %s -mtriple=x86_64-unknown-unknown -o - -experimental-debug-variable-locations | FileCheck %s --check-prefix=FASTREG |
| # |
| # Test that DBG_INSTR_REFs can pass through livedebugvariables to the end of |
| # regalloc without problem. Program body copied from |
| # livedebugvars-crossbb-interval.mir. |
| # |
| # CHECK-LABEL: bb.0: |
| # CHECK: DBG_INSTR_REF 1, 0 |
| # CHECK-NEXT: JMP_1 |
| # CHECK-LABEL: bb.1: |
| # CHECK: DBG_INSTR_REF 2, 0 |
| # CHECK-NEXT: JMP_1 |
| # CHECK-LABEL: bb.2: |
| # CHECK: DBG_INSTR_REF 3, 0 |
| # CHECK-NEXT: CALL64pcrel32 |
| # CHECK-LABEL: bb.3: |
| # CHECK: DBG_INSTR_REF 4, 0 |
| # CHECK-NEXT: JMP_1 |
| # |
| # |
| # The fast register allocator puts some spills in -- these are no-ops as far |
| # as the slot indexes are concerned. It doesn't matter which side of spills |
| # the DBG_INSTR_REF lands on. |
| # |
| # FASTREG-LABEL: bb.0: |
| # FASTREG-DAG: DBG_INSTR_REF 1, 0 |
| # FASTREG-DAG: MOV64mr |
| # FASTREG-DAG: MOV32mr |
| # FASTREG-NEXT: JMP_1 |
| # FASTREG-LABEL: bb.1: |
| # FASTREG: DBG_INSTR_REF 2, 0 |
| # FASTREG-NEXT: JMP_1 |
| # FASTREG-LABEL: bb.2: |
| # FASTREG: DBG_INSTR_REF 3, 0 |
| # FASTREG-NEXT: CALL64pcrel32 |
| # FASTREG-LABEL: bb.3: |
| # FASTREG-DAG: MOV32rm |
| # FASTREG-DAG: DBG_INSTR_REF 4, 0 |
| # FASTREG-DAG: MOV32mr |
| # FASTREG-NEXT: JMP_1 |
| # FASTREG-LABEL: bb.4: |
| # FASTREG: DBG_INSTR_REF 5, 0 |
| # FASTREG-NEXT: RETQ |
| |
| --- | |
| ; ModuleID = 'tmp.ll' |
| source_filename = "tmp.ll" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| %struct.a = type { i32 } |
| |
| ; Function Attrs: nounwind ssp |
| define i32 @bar() !dbg !4 { |
| ret i32 0, !dbg !18 |
| } |
| |
| declare i32 @foo(); |
| |
| ; Function Attrs: nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "asdf", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2) |
| !1 = !DIFile(filename: "bar.c", directory: "asdf") |
| !2 = !{} |
| !3 = !{i32 1, !"Debug Info Version", i32 3} |
| !4 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 5, type: !5, virtualIndex: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7} |
| !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !8 = !{!9, !14} |
| !9 = !DILocalVariable(name: "b", arg: 1, scope: !4, file: !1, line: 5, type: !10) |
| !10 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !0, baseType: !11, size: 64, align: 64) |
| !11 = !DICompositeType(tag: DW_TAG_structure_type, name: "a", scope: !0, file: !1, line: 1, size: 32, align: 32, elements: !12) |
| !12 = !{!13} |
| !13 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !1, file: !1, line: 2, baseType: !7, size: 32, align: 32) |
| !14 = !DILocalVariable(name: "x", scope: !15, file: !1, line: 6, type: !7) |
| !15 = distinct !DILexicalBlock(scope: !4, file: !1, line: 5, column: 22) |
| !16 = !DILocation(line: 5, column: 19, scope: !4) |
| !17 = !DILocation(line: 6, column: 14, scope: !15) |
| !18 = !DILocation(line: 8, column: 2, scope: !15) |
| !19 = !DILocation(line: 7, column: 2, scope: !15) |
| |
| ... |
| --- |
| name: bar |
| alignment: 16 |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: gr64 } |
| - { id: 1, class: gr32 } |
| - { id: 2, class: gr64 } |
| - { id: 3, class: gr64 } |
| - { id: 4, class: gr32 } |
| - { id: 5, class: gr32 } |
| - { id: 6, class: gr32 } |
| - { id: 7, class: gr32 } |
| liveins: |
| - { reg: '$rdi', virtual-reg: '%2' } |
| - { reg: '$esi', virtual-reg: '%4' } |
| frameInfo: |
| hasCalls: true |
| machineFunctionInfo: {} |
| body: | |
| bb.0: |
| liveins: $rdi, $esi |
| |
| %4:gr32 = COPY $esi |
| %2:gr64 = COPY $rdi |
| %3:gr64 = COPY killed %2 |
| %5:gr32 = COPY killed %4 |
| DBG_INSTR_REF 1, 0, !9, !DIExpression(), debug-location !16 |
| JMP_1 %bb.3 |
| |
| bb.1: |
| DBG_INSTR_REF 2, 0, !9, !DIExpression(), debug-location !16 |
| JMP_1 %bb.4 |
| |
| bb.2: |
| ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !19 |
| $edi = COPY %6, debug-location !19 |
| $al = MOV8ri 0, debug-location !19 |
| DBG_INSTR_REF 3, 0, !9, !DIExpression(), debug-location !16 |
| CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $al, implicit $edi, implicit-def $eax, debug-location !19 |
| ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !19 |
| %7:gr32 = COPY $eax, debug-location !19 |
| JMP_1 %bb.1 |
| |
| bb.3: |
| %6:gr32 = MOV32rm %3, 1, $noreg, 0, $noreg, debug-location !17 |
| DBG_INSTR_REF 4, 0, !9, !DIExpression(), debug-location !16 |
| JMP_1 %bb.2 |
| |
| bb.4: |
| $eax = COPY %5, debug-location !18 |
| DBG_INSTR_REF 5, 0, !9, !DIExpression(), debug-location !16 |
| RETQ implicit $eax, debug-location !18 |
| |
| ... |