1# RUN: llc -debug-entry-values -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s 2# 3# The test case was artificially adjusted, in order to make proper diamond basic 4# block structure relevant to the debug entry values clobbering. 5# 6# CHECK: ![[ARG_B:.*]] = !DILocalVariable(name: "b" 7# CHECK: bb.0.entry 8# CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression() 9# CHECK: bb.1.if.then 10# CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression() 11# CHECK: $ebx = MOV32rr $esi 12# CHECK-NEXT: DBG_VALUE $ebx, $noreg, ![[ARG_B]], !DIExpression() 13# CHECK-NEXT: $esi = MOV32ri 5 14# CHECK-NEXT: $ebx = MOV32ri 1 15# CHECK-NEXT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1) 16# CHECK: bb.2.if.else 17# CHECK: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression() 18# CHECK: $ebp = MOV32rr $esi 19# CHECK: DBG_VALUE $ebp, $noreg, ![[ARG_B]], !DIExpression() 20# CHECK-NEXT: $esi = MOV32ri 1 21# CHECK-NEXT: $ebp = MOV32ri 2 22# CHECK-NEXT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1) 23# CHECK: bb.3.if.end 24# CHECK-NOT: DBG_VALUE $esi, $noreg, ![[ARG_B]], !DIExpression(DW_OP_LLVM_entry_value, 1) 25# 26--- | 27 ; ModuleID = 'test.c' 28 source_filename = "test.c" 29 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 30 target triple = "x86_64-unknown-linux-gnu" 31 32 ; Function Attrs: noinline nounwind uwtable 33 define dso_local i32 @fn2(i32 %a, i32 %b, i32 %c) local_unnamed_addr !dbg !12 { 34 entry: 35 call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !20 36 call void @llvm.dbg.value(metadata i32 %b, metadata !17, metadata !DIExpression()), !dbg !20 37 call void @llvm.dbg.value(metadata i32 %c, metadata !18, metadata !DIExpression()), !dbg !20 38 %add = add nsw i32 %a, 2, !dbg !21 39 call void @llvm.dbg.value(metadata i32 %add, metadata !19, metadata !DIExpression()), !dbg !20 40 tail call void @fn1(i32 5, i32 6, i32 %add), !dbg !22 41 %cmp = icmp slt i32 %b, 17, !dbg !23 42 br i1 %cmp, label %if.then, label %if.else, !dbg !25 43 44 if.then: ; preds = %entry 45 %add1 = add nsw i32 %b, 7, !dbg !26 46 call void @llvm.dbg.value(metadata i32 %add1, metadata !17, metadata !DIExpression()), !dbg !20 47 tail call void @fn1(i32 5, i32 %add1, i32 %c), !dbg !28 48 br label %if.end, !dbg !29 49 50 if.else: ; preds = %entry 51 %add2 = add nuw nsw i32 %b, 1, !dbg !30 52 call void @llvm.dbg.value(metadata i32 %add2, metadata !17, metadata !DIExpression()), !dbg !20 53 tail call void @fn1(i32 1, i32 %add2, i32 %c), !dbg !32 54 br label %if.end 55 56 if.end: ; preds = %if.else, %if.then 57 %b.addr.0 = phi i32 [ %add1, %if.then ], [ %add2, %if.else ], !dbg !33 58 call void @llvm.dbg.value(metadata i32 %b.addr.0, metadata !17, metadata !DIExpression()), !dbg !20 59 ret i32 %b.addr.0, !dbg !34 60 } 61 62 declare !dbg !4 dso_local void @fn1(i32, i32, i32) local_unnamed_addr 63 64 ; Function Attrs: nounwind readnone speculatable willreturn 65 declare void @llvm.dbg.value(metadata, metadata, metadata) 66 67 !llvm.dbg.cu = !{!0} 68 !llvm.module.flags = !{!8, !9, !10} 69 !llvm.ident = !{!11} 70 71 !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) 72 !1 = !DIFile(filename: "test.c", directory: "/dir") 73 !2 = !{} 74 !3 = !{!4} 75 !4 = !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 76 !5 = !DISubroutineType(types: !6) 77 !6 = !{null, !7, !7, !7} 78 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 79 !8 = !{i32 2, !"Dwarf Version", i32 4} 80 !9 = !{i32 2, !"Debug Info Version", i32 3} 81 !10 = !{i32 1, !"wchar_size", i32 4} 82 !11 = !{!"clang version 10.0.0"} 83 !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) 84 !13 = !DISubroutineType(types: !14) 85 !14 = !{!7, !7, !7, !7} 86 !15 = !{!16, !17, !18, !19} 87 !16 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !1, line: 5, type: !7) 88 !17 = !DILocalVariable(name: "b", arg: 2, scope: !12, file: !1, line: 5, type: !7) 89 !18 = !DILocalVariable(name: "c", arg: 3, scope: !12, file: !1, line: 5, type: !7) 90 !19 = !DILocalVariable(name: "q", scope: !12, file: !1, line: 7, type: !7) 91 !20 = !DILocation(line: 0, scope: !12) 92 !21 = !DILocation(line: 7, column: 15, scope: !12) 93 !22 = !DILocation(line: 9, column: 5, scope: !12) 94 !23 = !DILocation(line: 11, column: 11, scope: !24) 95 !24 = distinct !DILexicalBlock(scope: !12, file: !1, line: 11, column: 9) 96 !25 = !DILocation(line: 11, column: 9, scope: !12) 97 !26 = !DILocation(line: 12, column: 13, scope: !27) 98 !27 = distinct !DILexicalBlock(scope: !24, file: !1, line: 11, column: 17) 99 !28 = !DILocation(line: 13, column: 8, scope: !27) 100 !29 = !DILocation(line: 14, column: 5, scope: !27) 101 !30 = !DILocation(line: 15, column: 13, scope: !31) 102 !31 = distinct !DILexicalBlock(scope: !24, file: !1, line: 14, column: 12) 103 !32 = !DILocation(line: 16, column: 7, scope: !31) 104 !33 = !DILocation(line: 0, scope: !24) 105 !34 = !DILocation(line: 19, column: 5, scope: !12) 106 107... 108--- 109name: fn2 110alignment: 16 111fixedStack: 112 - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default, 113 callee-saved-register: '$rbx', callee-saved-restored: true, debug-info-variable: '', 114 debug-info-expression: '', debug-info-location: '' } 115 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default, 116 callee-saved-register: '$rbp', callee-saved-restored: true, debug-info-variable: '', 117 debug-info-expression: '', debug-info-location: '' } 118body: | 119 bb.0.entry: 120 successors: %bb.1(0x40000000), %bb.2(0x40000000) 121 liveins: $edi, $edx, $esi, $rbp, $rbx 122 123 DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20 124 DBG_VALUE $esi, $noreg, !17, !DIExpression(), debug-location !20 125 DBG_VALUE $edx, $noreg, !18, !DIExpression(), debug-location !20 126 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp 127 CFI_INSTRUCTION def_cfa_offset 16 128 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp 129 CFI_INSTRUCTION def_cfa_offset 24 130 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp 131 CFI_INSTRUCTION def_cfa_offset 32 132 CFI_INSTRUCTION offset $rbx, -24 133 CFI_INSTRUCTION offset $rbp, -16 134 $ebp = MOV32rr $edx 135 DBG_VALUE $ebp, $noreg, !18, !DIExpression(), debug-location !20 136 renamable $edi = KILL $edi, implicit-def $rdi 137 DBG_VALUE $edi, $noreg, !16, !DIExpression(), debug-location !20 138 renamable $edx = LEA64_32r killed renamable $rdi, 1, $noreg, 2, $noreg, debug-location !21 139 DBG_VALUE $edx, $noreg, !19, !DIExpression(), debug-location !20 140 $edi = MOV32ri 5, debug-location !22 141 CMP32ri8 renamable $ebp, 16, implicit-def $eflags, debug-location !23 142 JCC_1 %bb.2, 15, implicit killed $eflags, debug-location !25 143 144 bb.1.if.then: 145 successors: %bb.3(0x80000000) 146 liveins: $ebp, $ebx, $esi 147 148 $ebx = MOV32rr $esi 149 DBG_VALUE $ebx, $noreg, !17, !DIExpression(), debug-location !20 150 $esi = MOV32ri 5, debug-location !28 151 $ebx = MOV32ri 1 152 JMP_1 %bb.3 153 154 bb.2.if.else: 155 successors: %bb.3(0x80000000) 156 liveins: $ebp, $ebx, $esi 157 158 $ebp = MOV32rr $esi 159 DBG_VALUE $ebp, $noreg, !17, !DIExpression(), debug-location !20 160 $esi = MOV32ri 1, debug-location !32 161 $ebp = MOV32ri 2 162 163 bb.3.if.end: 164 liveins: $ebx, $edi, $ebp 165 166 $esi = MOV32rr $ebx, debug-location !33 167 $edx = MOV32rr killed $ebp, debug-location !33 168 CALL64pcrel32 @fn1, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $esi, implicit $edx, implicit-def $rsp, implicit-def $ssp, debug-location !33 169 DBG_VALUE $ebx, $noreg, !17, !DIExpression(), debug-location !20 170 $eax = MOV32rr killed $ebx, debug-location !34 171 $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !34 172 CFI_INSTRUCTION def_cfa_offset 24, debug-location !34 173 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !34 174 CFI_INSTRUCTION def_cfa_offset 16, debug-location !34 175 $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !34 176 CFI_INSTRUCTION def_cfa_offset 8, debug-location !34 177 RETQ killed $eax, debug-location !34 178 179... 180 181