# 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
...