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1# RUN: llc -debug-entry-values -run-pass=livedebugvalues -o - %s -experimental-debug-variable-locations=true | FileCheck %s --check-prefixes=CHECK,INSTRREFLDV2#3# The test case was artificially adjusted, in order to make proper diamond basic4# block structure relevant to the debug entry values clobbering.5#6# CHECK: ![[ARG_B:.*]] = !DILocalVariable(name: "b"7# CHECK: bb.0.entry8# CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression()9# CHECK: bb.1.if.then10# CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression()11# CHECK: $ebx = MOV32rr $esi12# CHECK-NEXT: DBG_VALUE $ebx, $noreg, ![[ARG_B]], !DIExpression()13# CHECK-NEXT: $esi = MOV32ri 514# CHECK-NEXT: $ebx = MOV32ri 115# CHECK-NEXT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1)16# CHECK: bb.2.if.else17# CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression()18# CHECK: $ebp = MOV32rr $esi19# CHECK: DBG_VALUE $ebp, $noreg, ![[ARG_B]], !DIExpression()20# CHECK-NEXT: $esi = MOV32ri 121# CHECK-NEXT: $ebp = MOV32ri 222# CHECK-NEXT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1)23# CHECK: bb.3.if.end24# INSTRREFLDV: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1)25#26## NB: an identical test in llvm/test/DebugInfo/MIR/X86/kill-entry-value-after-diamond-bbs2.mir27## checks the same things for VarLocBasedLDV.28#29--- |30 ; ModuleID = 'test.c'31 source_filename = "test.c"32 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"33 target triple = "x86_64-unknown-linux-gnu"34 35 ; Function Attrs: noinline nounwind uwtable36 define dso_local i32 @fn2(i32 %a, i32 %b, i32 %c) local_unnamed_addr !dbg !12 {37 entry:38 call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !2039 call void @llvm.dbg.value(metadata i32 %b, metadata !17, metadata !DIExpression()), !dbg !2040 call void @llvm.dbg.value(metadata i32 %c, metadata !18, metadata !DIExpression()), !dbg !2041 %add = add nsw i32 %a, 2, !dbg !2142 call void @llvm.dbg.value(metadata i32 %add, metadata !19, metadata !DIExpression()), !dbg !2043 tail call void @fn1(i32 5, i32 6, i32 %add), !dbg !2244 %cmp = icmp slt i32 %b, 17, !dbg !2345 br i1 %cmp, label %if.then, label %if.else, !dbg !2546 47 if.then: ; preds = %entry48 %add1 = add nsw i32 %b, 7, !dbg !2649 call void @llvm.dbg.value(metadata i32 %add1, metadata !17, metadata !DIExpression()), !dbg !2050 tail call void @fn1(i32 5, i32 %add1, i32 %c), !dbg !2851 br label %if.end, !dbg !2952 53 if.else: ; preds = %entry54 %add2 = add nuw nsw i32 %b, 1, !dbg !3055 call void @llvm.dbg.value(metadata i32 %add2, metadata !17, metadata !DIExpression()), !dbg !2056 tail call void @fn1(i32 1, i32 %add2, i32 %c), !dbg !3257 br label %if.end58 59 if.end: ; preds = %if.else, %if.then60 %b.addr.0 = phi i32 [ %add1, %if.then ], [ %add2, %if.else ], !dbg !3361 call void @llvm.dbg.value(metadata i32 %b.addr.0, metadata !17, metadata !DIExpression()), !dbg !2062 ret i32 %b.addr.0, !dbg !3463 }64 65 declare !dbg !4 dso_local void @fn1(i32, i32, i32) local_unnamed_addr66 67 ; Function Attrs: nounwind readnone speculatable willreturn68 declare void @llvm.dbg.value(metadata, metadata, metadata)69 70 !llvm.dbg.cu = !{!0}71 !llvm.module.flags = !{!8, !9, !10}72 !llvm.ident = !{!11}73 74 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)75 !1 = !DIFile(filename: "test.c", directory: "/dir")76 !2 = !{}77 !3 = !{!4}78 !4 = !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)79 !5 = !DISubroutineType(types: !6)80 !6 = !{null, !7, !7, !7}81 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)82 !8 = !{i32 2, !"Dwarf Version", i32 4}83 !9 = !{i32 2, !"Debug Info Version", i32 3}84 !10 = !{i32 1, !"wchar_size", i32 4}85 !11 = !{!"clang version 10.0.0"}86 !12 = distinct !DISubprogram(name: "fn2", scope: !1, file: !1, line: 5, type: !13, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)87 !13 = !DISubroutineType(types: !14)88 !14 = !{!7, !7, !7, !7}89 !15 = !{!16, !17, !18, !19}90 !16 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !1, line: 5, type: !7)91 !17 = !DILocalVariable(name: "b", arg: 2, scope: !12, file: !1, line: 5, type: !7)92 !18 = !DILocalVariable(name: "c", arg: 3, scope: !12, file: !1, line: 5, type: !7)93 !19 = !DILocalVariable(name: "q", scope: !12, file: !1, line: 7, type: !7)94 !20 = !DILocation(line: 0, scope: !12)95 !21 = !DILocation(line: 7, column: 15, scope: !12)96 !22 = !DILocation(line: 9, column: 5, scope: !12)97 !23 = !DILocation(line: 11, column: 11, scope: !24)98 !24 = distinct !DILexicalBlock(scope: !12, file: !1, line: 11, column: 9)99 !25 = !DILocation(line: 11, column: 9, scope: !12)100 !26 = !DILocation(line: 12, column: 13, scope: !27)101 !27 = distinct !DILexicalBlock(scope: !24, file: !1, line: 11, column: 17)102 !28 = !DILocation(line: 13, column: 8, scope: !27)103 !29 = !DILocation(line: 14, column: 5, scope: !27)104 !30 = !DILocation(line: 15, column: 13, scope: !31)105 !31 = distinct !DILexicalBlock(scope: !24, file: !1, line: 14, column: 12)106 !32 = !DILocation(line: 16, column: 7, scope: !31)107 !33 = !DILocation(line: 0, scope: !24)108 !34 = !DILocation(line: 19, column: 5, scope: !12)109 110...111---112name: fn2113alignment: 16114debugInstrRef: true115fixedStack:116 - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default,117 callee-saved-register: '$rbx', callee-saved-restored: true, debug-info-variable: '',118 debug-info-expression: '', debug-info-location: '' }119 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,120 callee-saved-register: '$rbp', callee-saved-restored: true, debug-info-variable: '',121 debug-info-expression: '', debug-info-location: '' }122body: |123 bb.0.entry:124 successors: %bb.1(0x40000000), %bb.2(0x40000000)125 liveins: $edi, $edx, $esi, $rbp, $rbx126 127 DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20128 DBG_VALUE $esi, $noreg, !17, !DIExpression(), debug-location !20129 DBG_VALUE $edx, $noreg, !18, !DIExpression(), debug-location !20130 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp131 CFI_INSTRUCTION def_cfa_offset 16132 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp133 CFI_INSTRUCTION def_cfa_offset 24134 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp135 CFI_INSTRUCTION def_cfa_offset 32136 CFI_INSTRUCTION offset $rbx, -24137 CFI_INSTRUCTION offset $rbp, -16138 $ebp = MOV32rr $edx139 DBG_VALUE $ebp, $noreg, !18, !DIExpression(), debug-location !20140 renamable $edi = KILL $edi, implicit-def $rdi141 DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20142 renamable $edx = LEA64_32r killed renamable $rdi, 1, $noreg, 2, $noreg, debug-location !21143 DBG_VALUE $edx, $noreg, !19, !DIExpression(), debug-location !20144 $edi = MOV32ri 5, debug-location !22145 CMP32ri8 renamable $ebp, 16, implicit-def $eflags, debug-location !23146 JCC_1 %bb.2, 15, implicit killed $eflags, debug-location !25147 148 bb.1.if.then:149 successors: %bb.3(0x80000000)150 liveins: $ebp, $ebx, $esi151 152 $ebx = MOV32rr $esi153 DBG_VALUE $ebx, $noreg, !17, !DIExpression(), debug-location !20154 $esi = MOV32ri 5, debug-location !28155 $ebx = MOV32ri 1156 JMP_1 %bb.3157 158 bb.2.if.else:159 successors: %bb.3(0x80000000)160 liveins: $ebp, $ebx, $esi161 162 $ebp = MOV32rr $esi163 DBG_VALUE $ebp, $noreg, !17, !DIExpression(), debug-location !20164 $esi = MOV32ri 1, debug-location !32165 $ebp = MOV32ri 2166 167 bb.3.if.end:168 liveins: $ebx, $edi, $ebp169 170 $esi = MOV32rr $ebx, debug-location !33171 $edx = MOV32rr killed $ebp, debug-location !33172 CALL64pcrel32 @fn1, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $edx, implicit-def $rsp, implicit-def $ssp, debug-location !33173 DBG_VALUE $ebx, $noreg, !17, !DIExpression(), debug-location !20174 $eax = MOV32rr killed $ebx, debug-location !34175 $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !34176 CFI_INSTRUCTION def_cfa_offset 24, debug-location !34177 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !34178 CFI_INSTRUCTION def_cfa_offset 16, debug-location !34179 $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !34180 CFI_INSTRUCTION def_cfa_offset 8, debug-location !34181 RET64 killed $eax, debug-location !34182 183...184 185