1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py 2# RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu -start-before=regallocfast -stop-after=livedebugvalues -verify-machineinstrs -o - %s | FileCheck %s 3# DBG_VALUEs for %0 should be present in the use blocks 4 5--- | 6 define dso_local i32 @foo(i32 %a) #0 !dbg !6 { 7 entry: 8 %a.addr = alloca i32, align 4 9 %saved_stack = alloca i8*, align 8 10 %__vla_expr0 = alloca i64, align 8 11 %i = alloca i32, align 4 12 store i32 %a, i32* %a.addr, align 4 13 call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !11, metadata !DIExpression()), !dbg !12 14 %0 = load i32, i32* %a.addr, align 4, !dbg !13 15 %1 = zext i32 %0 to i64, !dbg !14 16 %2 = call i8* @llvm.stacksave(), !dbg !14 17 store i8* %2, i8** %saved_stack, align 8, !dbg !14 18 %vla = alloca i32, i64 %1, align 16, !dbg !14 19 store i64 %1, i64* %__vla_expr0, align 8, !dbg !14 20 call void @llvm.dbg.declare(metadata i64* %__vla_expr0, metadata !15, metadata !DIExpression()), !dbg !17 21 call void @llvm.dbg.declare(metadata i32* %vla, metadata !18, metadata !DIExpression()), !dbg !22 22 call void @llvm.dbg.declare(metadata i32* %i, metadata !23, metadata !DIExpression()), !dbg !25 23 store i32 0, i32* %i, align 4, !dbg !25 24 br label %for.cond, !dbg !26 25 26 for.cond: ; preds = %for.inc, %entry 27 %3 = load i32, i32* %i, align 4, !dbg !27 28 %4 = load i32, i32* %a.addr, align 4, !dbg !29 29 %cmp = icmp slt i32 %3, %4, !dbg !30 30 br i1 %cmp, label %for.body, label %for.end, !dbg !31 31 32 for.body: ; preds = %for.cond 33 %5 = load i32, i32* %a.addr, align 4, !dbg !32 34 %6 = load i32, i32* %i, align 4, !dbg !33 35 %sub = sub nsw i32 %5, %6, !dbg !34 36 %7 = load i32, i32* %i, align 4, !dbg !35 37 %idxprom = sext i32 %7 to i64, !dbg !36 38 %arrayidx = getelementptr inbounds i32, i32* %vla, i64 %idxprom, !dbg !36 39 store i32 %sub, i32* %arrayidx, align 4, !dbg !37 40 br label %for.inc, !dbg !36 41 42 for.inc: ; preds = %for.body 43 %8 = load i32, i32* %i, align 4, !dbg !38 44 %inc = add nsw i32 %8, 1, !dbg !38 45 store i32 %inc, i32* %i, align 4, !dbg !38 46 br label %for.cond, !dbg !39, !llvm.loop !40 47 48 for.end: ; preds = %for.cond 49 %9 = load i32, i32* %a.addr, align 4, !dbg !42 50 %sub1 = sub nsw i32 %9, 1, !dbg !43 51 %idxprom2 = sext i32 %sub1 to i64, !dbg !44 52 %arrayidx3 = getelementptr inbounds i32, i32* %vla, i64 %idxprom2, !dbg !44 53 %10 = load i32, i32* %arrayidx3, align 4, !dbg !44 54 %11 = load i8*, i8** %saved_stack, align 8, !dbg !45 55 call void @llvm.stackrestore(i8* %11), !dbg !45 56 ret i32 %10, !dbg !45 57 } 58 59 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 60 declare i8* @llvm.stacksave() #2 61 declare void @llvm.stackrestore(i8*) #2 62 63 attributes #0 = { noinline nounwind optnone uwtable } 64 attributes #1 = { nounwind readnone speculatable willreturn } 65 attributes #2 = { nounwind } 66 67 !llvm.dbg.cu = !{!0} 68 !llvm.module.flags = !{!3, !4, !5} 69 70 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0 (git@github.com:llvm/llvm-project.git 954995d0a45729c7935b82258c166524ee87ad3f)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) 71 !1 = !DIFile(filename: "/home/matt/src/llvm-project/lldb/test/API/lang/c/vla/main.c", directory: "/home/matt/src/llvm-project/build_debug_lldbg") 72 !2 = !{} 73 !3 = !{i32 7, !"Dwarf Version", i32 4} 74 !4 = !{i32 2, !"Debug Info Version", i32 3} 75 !5 = !{i32 1, !"wchar_size", i32 4} 76 !6 = distinct !DISubprogram(name: "foo", scope: !7, file: !7, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) 77 !7 = !DIFile(filename: "lldb/test/API/lang/c/vla/main.c", directory: "/home/matt/src/llvm-project") 78 !8 = !DISubroutineType(types: !9) 79 !9 = !{!10, !10} 80 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 81 !11 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !7, line: 3, type: !10) 82 !12 = !DILocation(line: 3, column: 13, scope: !6) 83 !13 = !DILocation(line: 4, column: 11, scope: !6) 84 !14 = !DILocation(line: 4, column: 3, scope: !6) 85 !15 = !DILocalVariable(name: "__vla_expr0", scope: !6, type: !16, flags: DIFlagArtificial) 86 !16 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned) 87 !17 = !DILocation(line: 0, scope: !6) 88 !18 = !DILocalVariable(name: "vla", scope: !6, file: !7, line: 4, type: !19) 89 !19 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, elements: !20) 90 !20 = !{!21} 91 !21 = !DISubrange(count: !15) 92 !22 = !DILocation(line: 4, column: 7, scope: !6) 93 !23 = !DILocalVariable(name: "i", scope: !24, file: !7, line: 6, type: !10) 94 !24 = distinct !DILexicalBlock(scope: !6, file: !7, line: 6, column: 3) 95 !25 = !DILocation(line: 6, column: 12, scope: !24) 96 !26 = !DILocation(line: 6, column: 8, scope: !24) 97 !27 = !DILocation(line: 6, column: 19, scope: !28) 98 !28 = distinct !DILexicalBlock(scope: !24, file: !7, line: 6, column: 3) 99 !29 = !DILocation(line: 6, column: 23, scope: !28) 100 !30 = !DILocation(line: 6, column: 21, scope: !28) 101 !31 = !DILocation(line: 6, column: 3, scope: !24) 102 !32 = !DILocation(line: 7, column: 14, scope: !28) 103 !33 = !DILocation(line: 7, column: 16, scope: !28) 104 !34 = !DILocation(line: 7, column: 15, scope: !28) 105 !35 = !DILocation(line: 7, column: 9, scope: !28) 106 !36 = !DILocation(line: 7, column: 5, scope: !28) 107 !37 = !DILocation(line: 7, column: 12, scope: !28) 108 !38 = !DILocation(line: 6, column: 26, scope: !28) 109 !39 = !DILocation(line: 6, column: 3, scope: !28) 110 !40 = distinct !{!40, !31, !41} 111 !41 = !DILocation(line: 7, column: 16, scope: !24) 112 !42 = !DILocation(line: 10, column: 14, scope: !6) 113 !43 = !DILocation(line: 10, column: 15, scope: !6) 114 !44 = !DILocation(line: 10, column: 10, scope: !6) 115 !45 = !DILocation(line: 11, column: 1, scope: !6) 116 117... 118--- 119name: foo 120tracksRegLiveness: true 121frameInfo: 122 hasCalls: true 123stack: 124 - { id: 0, name: a.addr, size: 4, alignment: 4, debug-info-variable: '!11', 125 debug-info-expression: '!DIExpression()', debug-info-location: '!12' } 126 - { id: 1, name: __vla_expr0, size: 8, alignment: 8, debug-info-variable: '!15', 127 debug-info-expression: '!DIExpression()', debug-info-location: '!17' } 128 - { id: 2, name: i, size: 4, alignment: 4, debug-info-variable: '!23', 129 debug-info-expression: '!DIExpression()', debug-info-location: '!25' } 130 - { id: 3, name: vla, type: variable-sized, alignment: 1 } 131body: | 132 ; CHECK-LABEL: name: foo 133 ; CHECK: bb.0.entry: 134 ; CHECK: successors: %bb.1(0x80000000) 135 ; CHECK: liveins: $edi, $rbx 136 ; CHECK: frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp 137 ; CHECK: CFI_INSTRUCTION def_cfa_offset 16 138 ; CHECK: CFI_INSTRUCTION offset $rbp, -16 139 ; CHECK: $rbp = frame-setup MOV64rr $rsp 140 ; CHECK: CFI_INSTRUCTION def_cfa_register $rbp 141 ; CHECK: frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp, debug-location !13 142 ; CHECK: $rsp = frame-setup SUB64ri8 $rsp, 40, implicit-def dead $eflags 143 ; CHECK: CFI_INSTRUCTION offset $rbx, -24 144 ; CHECK: renamable $eax = MOV32rm $rbp, 1, $noreg, -12, $noreg, debug-location !13 :: (dereferenceable load (s32) from %ir.a.addr) 145 ; CHECK: renamable $rax = KILL killed renamable $eax, debug-location !13 146 ; CHECK: $rcx = MOV64rr $rsp, debug-location !14 147 ; CHECK: MOV64mr $rbp, 1, $noreg, -40, $noreg, $rcx :: (store (s64) into %stack.4) 148 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 149 ; CHECK: $rsp = MOV64rr $rcx, debug-location !14 150 ; CHECK: MOV64mr $rbp, 1, $noreg, -24, $noreg, killed renamable $rax, debug-location !14 :: (store (s64) into %ir.__vla_expr0) 151 ; CHECK: DBG_VALUE renamable $rcx, 0, !18, !DIExpression(), debug-location !22 152 ; CHECK: MOV32mi $rbp, 1, $noreg, -28, $noreg, 0, debug-location !25 :: (store (s32) into %ir.i) 153 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 154 ; CHECK: bb.1.for.cond: 155 ; CHECK: successors: %bb.4(0x40000000), %bb.2(0x40000000) 156 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 157 ; CHECK: renamable $eax = MOV32rm $rbp, 1, $noreg, -28, $noreg, debug-location !27 :: (load (s32) from %ir.i) 158 ; CHECK: CMP32rm killed renamable $eax, $rbp, 1, $noreg, -12, $noreg, implicit-def $eflags, debug-location !30 :: (load (s32) from %ir.a.addr) 159 ; CHECK: JCC_1 %bb.4, 13, implicit killed $eflags, debug-location !31 160 ; CHECK: bb.2.for.body: 161 ; CHECK: successors: %bb.3(0x80000000) 162 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 163 ; CHECK: $rax = MOV64rm $rbp, 1, $noreg, -40, $noreg :: (load (s64) from %stack.4) 164 ; CHECK: renamable $edx = MOV32rm $rbp, 1, $noreg, -12, $noreg, debug-location !32 :: (load (s32) from %ir.a.addr) 165 ; CHECK: renamable $rcx = MOVSX64rm32 $rbp, 1, $noreg, -28, $noreg, debug-location !36 :: (load (s32) from %ir.i) 166 ; CHECK: MOV32mr renamable $rax, 4, killed renamable $rcx, 0, $noreg, killed renamable $edx, debug-location !37 :: (store (s32) into %ir.arrayidx) 167 ; CHECK: bb.3.for.inc: 168 ; CHECK: successors: %bb.1(0x80000000) 169 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 170 ; CHECK: JMP_1 %bb.1, debug-location !39 171 ; CHECK: bb.4.for.end: 172 ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 173 ; CHECK: $rax = IMPLICIT_DEF 174 ; CHECK: $rax = MOV64rm $rbp, 1, $noreg, -40, $noreg :: (load (s64) from %stack.4) 175 ; CHECK: dead $rbx = IMPLICIT_DEF 176 ; CHECK: dead $rcx = IMPLICIT_DEF 177 ; CHECK: dead $rdx = IMPLICIT_DEF 178 ; CHECK: renamable $rcx = IMPLICIT_DEF 179 ; CHECK: renamable $eax = MOV32rm killed renamable $rax, 4, killed renamable $rcx, 0, $noreg, debug-location !44 :: (load (s32) from %ir.arrayidx3) 180 ; CHECK: $rsp = LEA64r $rbp, 1, $noreg, -8, $noreg, debug-location !45 181 ; CHECK: $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !45 182 ; CHECK: $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !45 183 ; CHECK: CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !45 184 ; CHECK: RETQ implicit killed $eax, debug-location !45 185 bb.0.entry: 186 liveins: $edi 187 188 %0:gr32 = COPY $edi 189 %1:gr32 = MOV32rm %stack.0.a.addr, 1, $noreg, 0, $noreg, debug-location !13 :: (dereferenceable load (s32) from %ir.a.addr) 190 %2:gr64_nosp = SUBREG_TO_REG 0, killed %1, %subreg.sub_32bit, debug-location !13 191 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !14 192 %3:gr64 = COPY $rsp, debug-location !14 193 $rsp = COPY %3, debug-location !14 194 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !14 195 MOV64mr %stack.1.__vla_expr0, 1, $noreg, 0, $noreg, %2, debug-location !14 :: (store (s64) into %ir.__vla_expr0) 196 DBG_VALUE %3, 0, !18, !DIExpression(), debug-location !22 197 MOV32mi %stack.2.i, 1, $noreg, 0, $noreg, 0, debug-location !25 :: (store (s32) into %ir.i) 198 199 bb.1.for.cond: 200 %4:gr32 = MOV32rm %stack.2.i, 1, $noreg, 0, $noreg, debug-location !27 :: (load (s32) from %ir.i) 201 CMP32rm %4, %stack.0.a.addr, 1, $noreg, 0, $noreg, implicit-def $eflags, debug-location !30 :: (load (s32) from %ir.a.addr) 202 JCC_1 %bb.4, 13, implicit $eflags, debug-location !31 203 204 bb.2.for.body: 205 %5:gr32 = MOV32rm %stack.0.a.addr, 1, $noreg, 0, $noreg, debug-location !32 :: (load (s32) from %ir.a.addr) 206 %6:gr64_nosp = MOVSX64rm32 %stack.2.i, 1, $noreg, 0, $noreg, debug-location !36 :: (load (s32) from %ir.i) 207 MOV32mr %3, 4, %6, 0, $noreg, killed %5, debug-location !37 :: (store (s32) into %ir.arrayidx) 208 209 bb.3.for.inc: 210 JMP_1 %bb.1, debug-location !39 211 212 bb.4.for.end: 213 $rax = IMPLICIT_DEF 214 $rbx = IMPLICIT_DEF 215 $rcx = IMPLICIT_DEF 216 $rdx = IMPLICIT_DEF 217 %7:gr64_nosp = IMPLICIT_DEF 218 %8:gr32 = MOV32rm %3, 4, %7, 0, $noreg, debug-location !44 :: (load (s32) from %ir.arrayidx3) 219 $eax = COPY %8, debug-location !45 220 RETQ implicit $eax, debug-location !45 221 222... 223