| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| # RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu -start-before=regallocfast -stop-after=livedebugvalues -verify-machineinstrs -o - %s -experimental-debug-variable-locations=true | FileCheck %s |
| # DBG_VALUEs for %0 should be present in the use blocks |
| |
| --- | |
| define dso_local i32 @foo(i32 %a) #0 !dbg !6 { |
| entry: |
| %a.addr = alloca i32, align 4 |
| %saved_stack = alloca i8*, align 8 |
| %__vla_expr0 = alloca i64, align 8 |
| %i = alloca i32, align 4 |
| store i32 %a, i32* %a.addr, align 4 |
| call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !11, metadata !DIExpression()), !dbg !12 |
| %0 = load i32, i32* %a.addr, align 4, !dbg !13 |
| %1 = zext i32 %0 to i64, !dbg !14 |
| %2 = call i8* @llvm.stacksave(), !dbg !14 |
| store i8* %2, i8** %saved_stack, align 8, !dbg !14 |
| %vla = alloca i32, i64 %1, align 16, !dbg !14 |
| store i64 %1, i64* %__vla_expr0, align 8, !dbg !14 |
| call void @llvm.dbg.declare(metadata i64* %__vla_expr0, metadata !15, metadata !DIExpression()), !dbg !17 |
| call void @llvm.dbg.declare(metadata i32* %vla, metadata !18, metadata !DIExpression()), !dbg !22 |
| call void @llvm.dbg.declare(metadata i32* %i, metadata !23, metadata !DIExpression()), !dbg !25 |
| store i32 0, i32* %i, align 4, !dbg !25 |
| br label %for.cond, !dbg !26 |
| |
| for.cond: ; preds = %for.inc, %entry |
| %3 = load i32, i32* %i, align 4, !dbg !27 |
| %4 = load i32, i32* %a.addr, align 4, !dbg !29 |
| %cmp = icmp slt i32 %3, %4, !dbg !30 |
| br i1 %cmp, label %for.body, label %for.end, !dbg !31 |
| |
| for.body: ; preds = %for.cond |
| %5 = load i32, i32* %a.addr, align 4, !dbg !32 |
| %6 = load i32, i32* %i, align 4, !dbg !33 |
| %sub = sub nsw i32 %5, %6, !dbg !34 |
| %7 = load i32, i32* %i, align 4, !dbg !35 |
| %idxprom = sext i32 %7 to i64, !dbg !36 |
| %arrayidx = getelementptr inbounds i32, i32* %vla, i64 %idxprom, !dbg !36 |
| store i32 %sub, i32* %arrayidx, align 4, !dbg !37 |
| br label %for.inc, !dbg !36 |
| |
| for.inc: ; preds = %for.body |
| %8 = load i32, i32* %i, align 4, !dbg !38 |
| %inc = add nsw i32 %8, 1, !dbg !38 |
| store i32 %inc, i32* %i, align 4, !dbg !38 |
| br label %for.cond, !dbg !39, !llvm.loop !40 |
| |
| for.end: ; preds = %for.cond |
| %9 = load i32, i32* %a.addr, align 4, !dbg !42 |
| %sub1 = sub nsw i32 %9, 1, !dbg !43 |
| %idxprom2 = sext i32 %sub1 to i64, !dbg !44 |
| %arrayidx3 = getelementptr inbounds i32, i32* %vla, i64 %idxprom2, !dbg !44 |
| %10 = load i32, i32* %arrayidx3, align 4, !dbg !44 |
| %11 = load i8*, i8** %saved_stack, align 8, !dbg !45 |
| call void @llvm.stackrestore(i8* %11), !dbg !45 |
| ret i32 %10, !dbg !45 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| declare i8* @llvm.stacksave() #2 |
| declare void @llvm.stackrestore(i8*) #2 |
| |
| attributes #0 = { noinline nounwind optnone uwtable } |
| attributes #1 = { nounwind readnone speculatable willreturn } |
| attributes #2 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| |
| !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) |
| !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") |
| !2 = !{} |
| !3 = !{i32 7, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = distinct !DISubprogram(name: "foo", scope: !7, file: !7, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) |
| !7 = !DIFile(filename: "lldb/test/API/lang/c/vla/main.c", directory: "/home/matt/src/llvm-project") |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !7, line: 3, type: !10) |
| !12 = !DILocation(line: 3, column: 13, scope: !6) |
| !13 = !DILocation(line: 4, column: 11, scope: !6) |
| !14 = !DILocation(line: 4, column: 3, scope: !6) |
| !15 = !DILocalVariable(name: "__vla_expr0", scope: !6, type: !16, flags: DIFlagArtificial) |
| !16 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned) |
| !17 = !DILocation(line: 0, scope: !6) |
| !18 = !DILocalVariable(name: "vla", scope: !6, file: !7, line: 4, type: !19) |
| !19 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, elements: !20) |
| !20 = !{!21} |
| !21 = !DISubrange(count: !15) |
| !22 = !DILocation(line: 4, column: 7, scope: !6) |
| !23 = !DILocalVariable(name: "i", scope: !24, file: !7, line: 6, type: !10) |
| !24 = distinct !DILexicalBlock(scope: !6, file: !7, line: 6, column: 3) |
| !25 = !DILocation(line: 6, column: 12, scope: !24) |
| !26 = !DILocation(line: 6, column: 8, scope: !24) |
| !27 = !DILocation(line: 6, column: 19, scope: !28) |
| !28 = distinct !DILexicalBlock(scope: !24, file: !7, line: 6, column: 3) |
| !29 = !DILocation(line: 6, column: 23, scope: !28) |
| !30 = !DILocation(line: 6, column: 21, scope: !28) |
| !31 = !DILocation(line: 6, column: 3, scope: !24) |
| !32 = !DILocation(line: 7, column: 14, scope: !28) |
| !33 = !DILocation(line: 7, column: 16, scope: !28) |
| !34 = !DILocation(line: 7, column: 15, scope: !28) |
| !35 = !DILocation(line: 7, column: 9, scope: !28) |
| !36 = !DILocation(line: 7, column: 5, scope: !28) |
| !37 = !DILocation(line: 7, column: 12, scope: !28) |
| !38 = !DILocation(line: 6, column: 26, scope: !28) |
| !39 = !DILocation(line: 6, column: 3, scope: !28) |
| !40 = distinct !{!40, !31, !41} |
| !41 = !DILocation(line: 7, column: 16, scope: !24) |
| !42 = !DILocation(line: 10, column: 14, scope: !6) |
| !43 = !DILocation(line: 10, column: 15, scope: !6) |
| !44 = !DILocation(line: 10, column: 10, scope: !6) |
| !45 = !DILocation(line: 11, column: 1, scope: !6) |
| |
| ... |
| --- |
| name: foo |
| tracksRegLiveness: true |
| frameInfo: |
| hasCalls: true |
| stack: |
| - { id: 0, name: a.addr, size: 4, alignment: 4, debug-info-variable: '!11', |
| debug-info-expression: '!DIExpression()', debug-info-location: '!12' } |
| - { id: 1, name: __vla_expr0, size: 8, alignment: 8, debug-info-variable: '!15', |
| debug-info-expression: '!DIExpression()', debug-info-location: '!17' } |
| - { id: 2, name: i, size: 4, alignment: 4, debug-info-variable: '!23', |
| debug-info-expression: '!DIExpression()', debug-info-location: '!25' } |
| - { id: 3, name: vla, type: variable-sized, alignment: 1 } |
| body: | |
| ; CHECK-LABEL: name: foo |
| ; CHECK: bb.0.entry: |
| ; CHECK: successors: %bb.1(0x80000000) |
| ; CHECK: liveins: $edi, $rbx |
| ; CHECK: frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp |
| ; CHECK: CFI_INSTRUCTION def_cfa_offset 16 |
| ; CHECK: CFI_INSTRUCTION offset $rbp, -16 |
| ; CHECK: $rbp = frame-setup MOV64rr $rsp |
| ; CHECK: CFI_INSTRUCTION def_cfa_register $rbp |
| ; CHECK: frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp, debug-location !13 |
| ; CHECK: $rsp = frame-setup SUB64ri8 $rsp, 40, implicit-def dead $eflags |
| ; CHECK: CFI_INSTRUCTION offset $rbx, -24 |
| ; CHECK: renamable $eax = MOV32rm $rbp, 1, $noreg, -12, $noreg, debug-location !13 :: (dereferenceable load (s32) from %ir.a.addr) |
| ; CHECK: renamable $rax = KILL killed renamable $eax, debug-location !13 |
| ; CHECK: $rcx = MOV64rr $rsp, debug-location !14 |
| ; CHECK: MOV64mr $rbp, 1, $noreg, -40, $noreg, $rcx :: (store (s64) into %stack.4) |
| ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 |
| ; CHECK: $rsp = MOV64rr $rcx, debug-location !14 |
| ; CHECK: MOV64mr $rbp, 1, $noreg, -24, $noreg, killed renamable $rax, debug-location !14 :: (store (s64) into %ir.__vla_expr0) |
| ; CHECK: DBG_VALUE renamable $rcx, 0, !18, !DIExpression(), debug-location !22 |
| ; CHECK: MOV32mi $rbp, 1, $noreg, -28, $noreg, 0, debug-location !25 :: (store (s32) into %ir.i) |
| ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 |
| ; CHECK: bb.1.for.cond: |
| ; CHECK: successors: %bb.4(0x40000000), %bb.2(0x40000000) |
| ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 |
| ; CHECK: renamable $eax = MOV32rm $rbp, 1, $noreg, -28, $noreg, debug-location !27 :: (load (s32) from %ir.i) |
| ; CHECK: CMP32rm killed renamable $eax, $rbp, 1, $noreg, -12, $noreg, implicit-def $eflags, debug-location !30 :: (load (s32) from %ir.a.addr) |
| ; CHECK: JCC_1 %bb.4, 13, implicit killed $eflags, debug-location !31 |
| ; CHECK: bb.2.for.body: |
| ; CHECK: successors: %bb.3(0x80000000) |
| ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 |
| ; CHECK: $rax = MOV64rm $rbp, 1, $noreg, -40, $noreg :: (load (s64) from %stack.4) |
| ; CHECK: renamable $edx = MOV32rm $rbp, 1, $noreg, -12, $noreg, debug-location !32 :: (load (s32) from %ir.a.addr) |
| ; CHECK: renamable $rcx = MOVSX64rm32 $rbp, 1, $noreg, -28, $noreg, debug-location !36 :: (load (s32) from %ir.i) |
| ; CHECK: MOV32mr renamable $rax, 4, killed renamable $rcx, 0, $noreg, killed renamable $edx, debug-location !37 :: (store (s32) into %ir.arrayidx) |
| ; CHECK: bb.3.for.inc: |
| ; CHECK: successors: %bb.1(0x80000000) |
| ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 |
| ; CHECK: JMP_1 %bb.1, debug-location !39 |
| ; CHECK: bb.4.for.end: |
| ; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22 |
| ; CHECK: $rax = IMPLICIT_DEF |
| ; CHECK: $rax = MOV64rm $rbp, 1, $noreg, -40, $noreg :: (load (s64) from %stack.4) |
| ; CHECK: dead $rbx = IMPLICIT_DEF |
| ; CHECK: dead $rcx = IMPLICIT_DEF |
| ; CHECK: dead $rdx = IMPLICIT_DEF |
| ; CHECK: renamable $rcx = IMPLICIT_DEF |
| ; CHECK: renamable $eax = MOV32rm killed renamable $rax, 4, killed renamable $rcx, 0, $noreg, debug-location !44 :: (load (s32) from %ir.arrayidx3) |
| ; CHECK: $rsp = LEA64r $rbp, 1, $noreg, -8, $noreg, debug-location !45 |
| ; CHECK: $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !45 |
| ; CHECK: $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !45 |
| ; CHECK: CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !45 |
| ; CHECK: RET64 implicit killed $eax, debug-location !45 |
| bb.0.entry: |
| liveins: $edi |
| |
| %0:gr32 = COPY $edi |
| %1:gr32 = MOV32rm %stack.0.a.addr, 1, $noreg, 0, $noreg, debug-location !13 :: (dereferenceable load (s32) from %ir.a.addr) |
| %2:gr64_nosp = SUBREG_TO_REG 0, killed %1, %subreg.sub_32bit, debug-location !13 |
| ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !14 |
| %3:gr64 = COPY $rsp, debug-location !14 |
| $rsp = COPY %3, debug-location !14 |
| ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !14 |
| MOV64mr %stack.1.__vla_expr0, 1, $noreg, 0, $noreg, %2, debug-location !14 :: (store (s64) into %ir.__vla_expr0) |
| DBG_VALUE %3, 0, !18, !DIExpression(), debug-location !22 |
| MOV32mi %stack.2.i, 1, $noreg, 0, $noreg, 0, debug-location !25 :: (store (s32) into %ir.i) |
| |
| bb.1.for.cond: |
| %4:gr32 = MOV32rm %stack.2.i, 1, $noreg, 0, $noreg, debug-location !27 :: (load (s32) from %ir.i) |
| CMP32rm %4, %stack.0.a.addr, 1, $noreg, 0, $noreg, implicit-def $eflags, debug-location !30 :: (load (s32) from %ir.a.addr) |
| JCC_1 %bb.4, 13, implicit $eflags, debug-location !31 |
| |
| bb.2.for.body: |
| %5:gr32 = MOV32rm %stack.0.a.addr, 1, $noreg, 0, $noreg, debug-location !32 :: (load (s32) from %ir.a.addr) |
| %6:gr64_nosp = MOVSX64rm32 %stack.2.i, 1, $noreg, 0, $noreg, debug-location !36 :: (load (s32) from %ir.i) |
| MOV32mr %3, 4, %6, 0, $noreg, killed %5, debug-location !37 :: (store (s32) into %ir.arrayidx) |
| |
| bb.3.for.inc: |
| JMP_1 %bb.1, debug-location !39 |
| |
| bb.4.for.end: |
| $rax = IMPLICIT_DEF |
| $rbx = IMPLICIT_DEF |
| $rcx = IMPLICIT_DEF |
| $rdx = IMPLICIT_DEF |
| %7:gr64_nosp = IMPLICIT_DEF |
| %8:gr32 = MOV32rm %3, 4, %7, 0, $noreg, debug-location !44 :: (load (s32) from %ir.arrayidx3) |
| $eax = COPY %8, debug-location !45 |
| RET64 implicit $eax, debug-location !45 |
| |
| ... |