llvm/test/CodeGen/X86/fast-regalloc-live-out-debug-values.mir - third_party/llvm-project - Git at Google

 # 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 ptr, align 8
     %__vla_expr0 = alloca i64, align 8
     %i = alloca i32, align 4
     store i32 %a, ptr %a.addr, align 4
     call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !11, metadata !DIExpression()), !dbg !12
     %0 = load i32, ptr %a.addr, align 4, !dbg !13
     %1 = zext i32 %0 to i64, !dbg !14
     %2 = call ptr @llvm.stacksave(), !dbg !14
     store ptr %2, ptr %saved_stack, align 8, !dbg !14
     %vla = alloca i32, i64 %1, align 16, !dbg !14
     store i64 %1, ptr %__vla_expr0, align 8, !dbg !14
     call void @llvm.dbg.declare(metadata ptr %__vla_expr0, metadata !15, metadata !DIExpression()), !dbg !17
     call void @llvm.dbg.declare(metadata ptr %vla, metadata !18, metadata !DIExpression()), !dbg !22
     call void @llvm.dbg.declare(metadata ptr %i, metadata !23, metadata !DIExpression()), !dbg !25
     store i32 0, ptr %i, align 4, !dbg !25
     br label %for.cond, !dbg !26

   for.cond:                                         ; preds = %for.inc, %entry
     %3 = load i32, ptr %i, align 4, !dbg !27
     %4 = load i32, ptr %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, ptr %a.addr, align 4, !dbg !32
     %6 = load i32, ptr %i, align 4, !dbg !33
     %sub = sub nsw i32 %5, %6, !dbg !34
     %7 = load i32, ptr %i, align 4, !dbg !35
     %idxprom = sext i32 %7 to i64, !dbg !36
     %arrayidx = getelementptr inbounds i32, ptr %vla, i64 %idxprom, !dbg !36
     store i32 %sub, ptr %arrayidx, align 4, !dbg !37
     br label %for.inc, !dbg !36

   for.inc:                                          ; preds = %for.body
     %8 = load i32, ptr %i, align 4, !dbg !38
     %inc = add nsw i32 %8, 1, !dbg !38
     store i32 %inc, ptr %i, align 4, !dbg !38
     br label %for.cond, !dbg !39, !llvm.loop !40

   for.end:                                          ; preds = %for.cond
     %9 = load i32, ptr %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, ptr %vla, i64 %idxprom2, !dbg !44
     %10 = load i32, ptr %arrayidx3, align 4, !dbg !44
     %11 = load ptr, ptr %saved_stack, align 8, !dbg !45
     call void @llvm.stackrestore(ptr %11), !dbg !45
     ret i32 %10, !dbg !45
   }

   declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
   declare ptr @llvm.stacksave() #2
   declare void @llvm.stackrestore(ptr) #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:
   adjustsStack:    true
   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 SUB64ri32 $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

 ...
	# 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 ptr, align 8
	%__vla_expr0 = alloca i64, align 8
	%i = alloca i32, align 4
	store i32 %a, ptr %a.addr, align 4
	call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !11, metadata !DIExpression()), !dbg !12
	%0 = load i32, ptr %a.addr, align 4, !dbg !13
	%1 = zext i32 %0 to i64, !dbg !14
	%2 = call ptr @llvm.stacksave(), !dbg !14
	store ptr %2, ptr %saved_stack, align 8, !dbg !14
	%vla = alloca i32, i64 %1, align 16, !dbg !14
	store i64 %1, ptr %__vla_expr0, align 8, !dbg !14
	call void @llvm.dbg.declare(metadata ptr %__vla_expr0, metadata !15, metadata !DIExpression()), !dbg !17
	call void @llvm.dbg.declare(metadata ptr %vla, metadata !18, metadata !DIExpression()), !dbg !22
	call void @llvm.dbg.declare(metadata ptr %i, metadata !23, metadata !DIExpression()), !dbg !25
	store i32 0, ptr %i, align 4, !dbg !25
	br label %for.cond, !dbg !26

	for.cond: ; preds = %for.inc, %entry
	%3 = load i32, ptr %i, align 4, !dbg !27
	%4 = load i32, ptr %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, ptr %a.addr, align 4, !dbg !32
	%6 = load i32, ptr %i, align 4, !dbg !33
	%sub = sub nsw i32 %5, %6, !dbg !34
	%7 = load i32, ptr %i, align 4, !dbg !35
	%idxprom = sext i32 %7 to i64, !dbg !36
	%arrayidx = getelementptr inbounds i32, ptr %vla, i64 %idxprom, !dbg !36
	store i32 %sub, ptr %arrayidx, align 4, !dbg !37
	br label %for.inc, !dbg !36

	for.inc: ; preds = %for.body
	%8 = load i32, ptr %i, align 4, !dbg !38
	%inc = add nsw i32 %8, 1, !dbg !38
	store i32 %inc, ptr %i, align 4, !dbg !38
	br label %for.cond, !dbg !39, !llvm.loop !40

	for.end: ; preds = %for.cond
	%9 = load i32, ptr %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, ptr %vla, i64 %idxprom2, !dbg !44
	%10 = load i32, ptr %arrayidx3, align 4, !dbg !44
	%11 = load ptr, ptr %saved_stack, align 8, !dbg !45
	call void @llvm.stackrestore(ptr %11), !dbg !45
	ret i32 %10, !dbg !45
	}

	declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
	declare ptr @llvm.stacksave() #2
	declare void @llvm.stackrestore(ptr) #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:
	adjustsStack: true
	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 SUB64ri32 $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

	...