1# RUN: llc -start-after=phi-node-elimination -stop-after=virtregrewriter %s -mtriple=x86_64-unknown-unknown -o - -experimental-debug-variable-locations | FileCheck %s 2# 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 3# 4# Test that DBG_INSTR_REFs can pass through livedebugvariables to the end of 5# regalloc without problem. Program body copied from 6# livedebugvars-crossbb-interval.mir. 7# 8# CHECK-LABEL: bb.0: 9# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0) 10# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0), dbg-instr-ref(2, 0) 11# CHECK-NEXT: JMP_1 12# CHECK-LABEL: bb.1: 13# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0) 14# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0), dbg-instr-ref(3, 0) 15# CHECK-NEXT: JMP_1 16# CHECK-LABEL: bb.2: 17# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0) 18# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0), dbg-instr-ref(4, 0) 19# CHECK-NEXT: CALL64pcrel32 20# CHECK-LABEL: bb.3: 21# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0) 22# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0), dbg-instr-ref(5, 0) 23# CHECK-NEXT: JMP_1 24# 25# 26# The fast register allocator puts some spills in -- these are no-ops as far 27# as the slot indexes are concerned. It doesn't matter which side of spills 28# the DBG_INSTR_REF lands on. 29# 30# FASTREG-LABEL: bb.0: 31# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0) 32# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0), dbg-instr-ref(2, 0) 33# FASTREG-DAG: MOV64mr 34# FASTREG-DAG: MOV32mr 35# FASTREG-NEXT: JMP_1 36# FASTREG-LABEL: bb.1: 37# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0) 38# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0), dbg-instr-ref(3, 0) 39# FASTREG-NEXT: JMP_1 40# FASTREG-LABEL: bb.2: 41# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0) 42# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0), dbg-instr-ref(4, 0) 43# FASTREG-NEXT: CALL64pcrel32 44# FASTREG-LABEL: bb.3: 45# FASTREG-DAG: MOV32rm 46# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0) 47# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0), dbg-instr-ref(5, 0) 48# FASTREG-DAG: MOV32mr 49# FASTREG-NEXT: JMP_1 50# FASTREG-LABEL: bb.4: 51# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(5, 0) 52# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(5, 0), dbg-instr-ref(1, 0) 53# FASTREG-NEXT: RET64 54 55--- | 56 ; ModuleID = 'tmp.ll' 57 source_filename = "tmp.ll" 58 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 59 60 %struct.a = type { i32 } 61 62 ; Function Attrs: nounwind ssp 63 define i32 @bar() !dbg !4 { 64 ret i32 0, !dbg !18 65 } 66 67 declare i32 @foo(); 68 69 ; Function Attrs: nounwind readnone speculatable willreturn 70 declare void @llvm.dbg.value(metadata, metadata, metadata) 71 72 !llvm.dbg.cu = !{!0} 73 !llvm.module.flags = !{!3} 74 75 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "asdf", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2) 76 !1 = !DIFile(filename: "bar.c", directory: "asdf") 77 !2 = !{} 78 !3 = !{i32 1, !"Debug Info Version", i32 3} 79 !4 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 5, type: !5, virtualIndex: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8) 80 !5 = !DISubroutineType(types: !6) 81 !6 = !{!7} 82 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 83 !8 = !{!9, !14} 84 !9 = !DILocalVariable(name: "b", arg: 1, scope: !4, file: !1, line: 5, type: !10) 85 !10 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !0, baseType: !11, size: 64, align: 64) 86 !11 = !DICompositeType(tag: DW_TAG_structure_type, name: "a", scope: !0, file: !1, line: 1, size: 32, align: 32, elements: !12) 87 !12 = !{!13} 88 !13 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !1, file: !1, line: 2, baseType: !7, size: 32, align: 32) 89 !14 = !DILocalVariable(name: "x", scope: !15, file: !1, line: 6, type: !7) 90 !15 = distinct !DILexicalBlock(scope: !4, file: !1, line: 5, column: 22) 91 !16 = !DILocation(line: 5, column: 19, scope: !4) 92 !17 = !DILocation(line: 6, column: 14, scope: !15) 93 !18 = !DILocation(line: 8, column: 2, scope: !15) 94 !19 = !DILocation(line: 7, column: 2, scope: !15) 95 !29 = !DILocalVariable(name: "c", scope: !4, file: !1, line: 5, type: !10) 96 97... 98--- 99name: bar 100alignment: 16 101tracksRegLiveness: true 102debugInstrRef: true 103registers: 104 - { id: 0, class: gr64 } 105 - { id: 1, class: gr32 } 106 - { id: 2, class: gr64 } 107 - { id: 3, class: gr64 } 108 - { id: 4, class: gr32 } 109 - { id: 5, class: gr32 } 110 - { id: 6, class: gr32 } 111 - { id: 7, class: gr32 } 112liveins: 113 - { reg: '$rdi', virtual-reg: '%2' } 114 - { reg: '$esi', virtual-reg: '%4' } 115frameInfo: 116 adjustsStack: true 117 hasCalls: true 118machineFunctionInfo: {} 119body: | 120 bb.0: 121 liveins: $rdi, $esi 122 123 %4:gr32 = COPY $esi 124 %2:gr64 = COPY $rdi 125 %3:gr64 = COPY killed %2 126 %5:gr32 = COPY killed %4 127 DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !16 128 DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(1, 0), dbg-instr-ref(2, 0), debug-location !16 129 JMP_1 %bb.3 130 131 bb.1: 132 DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(2, 0), debug-location !16 133 DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(2, 0), dbg-instr-ref(3, 0), debug-location !16 134 JMP_1 %bb.4 135 136 bb.2: 137 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !19 138 $edi = COPY %6, debug-location !19 139 $al = MOV8ri 0, debug-location !19 140 DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(3, 0), debug-location !16 141 DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(3, 0), dbg-instr-ref(4, 0), debug-location !16 142 CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $al, implicit $edi, implicit-def $eax, debug-location !19 143 ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !19 144 %7:gr32 = COPY $eax, debug-location !19 145 JMP_1 %bb.1 146 147 bb.3: 148 %6:gr32 = MOV32rm %3, 1, $noreg, 0, $noreg, debug-location !17 149 DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(4, 0), debug-location !16 150 DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(4, 0), dbg-instr-ref(5, 0), debug-location !16 151 JMP_1 %bb.2 152 153 bb.4: 154 $eax = COPY %5, debug-location !18 155 DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(5, 0), debug-location !16 156 DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(5, 0), dbg-instr-ref(1, 0), debug-location !16 157 RET64 implicit $eax, debug-location !18 158 159... 160