third_party/llvm-7.0/llvm/test/CodeGen/ARM/sched-it-debug-nodes.mir - SwiftShader.git - Git at Google


            
            # RUN: llc -mtriple thumbv7 -verify-machineinstrs -start-after if-converter -print-before post-RA-sched -print-after post-RA-sched %s -o /dev/null 2>&1 | FileCheck %s

            
            --- |

            
              ; ModuleID = '/Volumes/Data/llvm/test/CodeGen/ARM/sched-it-debug-nodes.ll'

            
              target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"

            
              target triple = "thumbv7"


              %struct.s = type opaque


              ; Function Attrs: nounwind

            
              define arm_aapcscc i32 @f(%struct.s* %s, i32 %u, i8* %b, i32 %n) #0 !dbg !4 {

            
              entry:

            
                tail call void @llvm.dbg.value(metadata %struct.s* %s, i64 0, metadata !18, metadata !27), !dbg !28

            
                tail call void @llvm.dbg.value(metadata i32 %u, i64 0, metadata !19, metadata !27), !dbg !28

            
                tail call void @llvm.dbg.value(metadata i8* %b, i64 0, metadata !20, metadata !27), !dbg !28

            
                tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !21, metadata !27), !dbg !28

            
                %cmp = icmp ult i32 %n, 4, !dbg !29

            
                br i1 %cmp, label %return, label %if.end, !dbg !31


              if.end:                                           ; preds = %entry

            
                tail call arm_aapcscc void @g(%struct.s* %s, i8* %b, i32 %n) #3, !dbg !32

            
                br label %return, !dbg !33


              return:                                           ; preds = %if.end, %entry

            
                %retval.0 = phi i32 [ 0, %if.end ], [ -1, %entry ]

            
                ret i32 %retval.0, !dbg !34

            
              }


              ; NOTE: This is checking that the register in the DEBUG_VALUE node is not

            
              ; accidentally being marked as KILL.  The DBG_VALUE node gets introduced in

            
              ; If-Conversion, and gets bundled into the IT block.  The Post RA Scheduler

            
              ; attempts to schedule the Machine Instr, and tries to tag the register in the

            
              ; debug value as KILL'ed, resulting in a DEBUG_VALUE node changing codegen!  (or

            
              ; hopefully, triggering an assert).


              ; CHECK: BUNDLE implicit-def dead $itstate{{.*}} {

            
              ; CHECK: DBG_VALUE debug-use $r1, debug-use $noreg, !"u"

            
              ; CHECK-NOT: DBG_VALUE killed $r1, $noreg, !"u"


              declare arm_aapcscc void @g(%struct.s*, i8*, i32) #1


              ; Function Attrs: nounwind readnone

            
              declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2


              attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }

            
              attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }

            
              attributes #2 = { nounwind readnone }

            
              attributes #3 = { nounwind }


              !llvm.dbg.cu = !{!0}

            
              !llvm.module.flags = !{!22, !23, !24, !25}

            
              !llvm.ident = !{!26}


              !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0  (llvm/trunk 237059)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)

            
              !1 = !DIFile(filename: "<stdin>", directory: "/Users/compnerd/Source/llvm")

            
              !2 = !{}

            
              !4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 9, type: !5, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !17)

            
              !5 = !DISubroutineType(types: !6)

            
              !6 = !{!7, !8, !11, !12, !16}

            
              !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)

            
              !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32, align: 32)

            
              !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "s", file: !1, line: 5, baseType: !10)

            
              !10 = !DICompositeType(tag: DW_TAG_structure_type, name: "s", file: !1, line: 5, flags: DIFlagFwdDecl)

            
              !11 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)

            
              !12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 32, align: 32)

            
              !13 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !14)

            
              !14 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !1, line: 2, baseType: !15)

            
              !15 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)

            
              !16 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", file: !1, line: 3, baseType: !11)

            
              !17 = !{!18, !19, !20, !21}

            
              !18 = !DILocalVariable(name: "s", arg: 1, scope: !4, file: !1, line: 9, type: !8)

            
              !19 = !DILocalVariable(name: "u", arg: 2, scope: !4, file: !1, line: 9, type: !11)

            
              !20 = !DILocalVariable(name: "b", arg: 3, scope: !4, file: !1, line: 9, type: !12)

            
              !21 = !DILocalVariable(name: "n", arg: 4, scope: !4, file: !1, line: 9, type: !16)

            
              !22 = !{i32 2, !"Dwarf Version", i32 4}

            
              !23 = !{i32 2, !"Debug Info Version", i32 3}

            
              !24 = !{i32 1, !"wchar_size", i32 4}

            
              !25 = !{i32 1, !"min_enum_size", i32 4}

            
              !26 = !{!"clang version 3.7.0  (llvm/trunk 237059)"}

            
              !27 = !DIExpression()

            
              !28 = !DILocation(line: 9, scope: !4)

            
              !29 = !DILocation(line: 10, scope: !30)

            
              !30 = distinct !DILexicalBlock(scope: !4, file: !1, line: 10)

            
              !31 = !DILocation(line: 10, scope: !4)

            
              !32 = !DILocation(line: 13, scope: !4)

            
              !33 = !DILocation(line: 14, scope: !4)

            
              !34 = !DILocation(line: 15, scope: !4)


            ...

            
            ---

            
            name:            f

            
            alignment:       1

            
            exposesReturnsTwice: false

            
            tracksRegLiveness: true

            
            liveins:

            
              - { reg: '$r0' }

            
              - { reg: '$r1' }

            
              - { reg: '$r2' }

            
              - { reg: '$r3' }

            
            calleeSavedRegisters: [ '$lr', '$d8', '$d9', '$d10', '$d11', '$d12', '$d13',

            
                                    '$d14', '$d15', '$q4', '$q5', '$q6', '$q7', '$r4',

            
                                    '$r5', '$r6', '$r7', '$r8', '$r9', '$r10', '$r11',

            
                                    '$s16', '$s17', '$s18', '$s19', '$s20', '$s21',

            
                                    '$s22', '$s23', '$s24', '$s25', '$s26', '$s27',

            
                                    '$s28', '$s29', '$s30', '$s31', '$d8_d10', '$d9_d11',

            
                                    '$d10_d12', '$d11_d13', '$d12_d14', '$d13_d15',

            
                                    '$q4_q5', '$q5_q6', '$q6_q7', '$q4_q5_q6_q7', '$r4_r5',

            
                                    '$r6_r7', '$r8_r9', '$r10_r11', '$d8_d9_d10', '$d9_d10_d11',

            
                                    '$d10_d11_d12', '$d11_d12_d13', '$d12_d13_d14',

            
                                    '$d13_d14_d15', '$d8_d10_d12', '$d9_d11_d13', '$d10_d12_d14',

            
                                    '$d11_d13_d15', '$d8_d10_d12_d14', '$d9_d11_d13_d15',

            
                                    '$d9_d10', '$d11_d12', '$d13_d14', '$d9_d10_d11_d12',

            
                                    '$d11_d12_d13_d14' ]

            
            frameInfo:

            
              isFrameAddressTaken: false

            
              isReturnAddressTaken: false

            
              hasStackMap:     false

            
              hasPatchPoint:   false

            
              stackSize:       8

            
              offsetAdjustment: 0

            
              maxAlignment:    4

            
              adjustsStack:    true

            
              hasCalls:        true

            
              maxCallFrameSize: 0

            
              hasOpaqueSPAdjustment: false

            
              hasVAStart:      false

            
              hasMustTailInVarArgFunc: false

            
            stack:

            
              - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr', callee-saved-restored: false }

            
              - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '$r7' }

            
            body:             |

            
              bb.0.entry:

            
                liveins: $r0, $r1, $r2, $r3, $lr, $r7


                DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28

            
                DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28

            
                DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28

            
                DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28

            
                t2CMPri $r3, 4, 14, $noreg, implicit-def $cpsr, debug-location !31

            
                DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28

            
                $r0 = t2MOVi -1, 3, $cpsr, $noreg, implicit undef $r0

            
                DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28

            
                tBX_RET 3, $cpsr, implicit $r0, debug-location !34

            
                $sp = frame-setup t2STMDB_UPD $sp, 14, $noreg, killed $r7, killed $lr

            
                frame-setup CFI_INSTRUCTION def_cfa_offset 8

            
                frame-setup CFI_INSTRUCTION offset $lr, -4

            
                frame-setup CFI_INSTRUCTION offset $r7, -8

            
                DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28

            
                DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28

            
                DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28

            
                DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28

            
                $r1 = tMOVr killed $r2, 14, $noreg, debug-location !32

            
                $r2 = tMOVr killed $r3, 14, $noreg, debug-location !32

            
                tBL 14, $noreg, @g, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit-def $sp, debug-location !32

            
                $r0 = t2MOVi 0, 14, $noreg, $noreg

            
                $sp = t2LDMIA_RET $sp, 14, $noreg, def $r7, def $pc, implicit $r0


            ...
	# RUN: llc -mtriple thumbv7 -verify-machineinstrs -start-after if-converter -print-before post-RA-sched -print-after post-RA-sched %s -o /dev/null 2>&1 \| FileCheck %s
	--- \|
	; ModuleID = '/Volumes/Data/llvm/test/CodeGen/ARM/sched-it-debug-nodes.ll'
	target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
	target triple = "thumbv7"

	%struct.s = type opaque

	; Function Attrs: nounwind
	define arm_aapcscc i32 @f(%struct.s* %s, i32 %u, i8* %b, i32 %n) #0 !dbg !4 {
	entry:
	tail call void @llvm.dbg.value(metadata %struct.s* %s, i64 0, metadata !18, metadata !27), !dbg !28
	tail call void @llvm.dbg.value(metadata i32 %u, i64 0, metadata !19, metadata !27), !dbg !28
	tail call void @llvm.dbg.value(metadata i8* %b, i64 0, metadata !20, metadata !27), !dbg !28
	tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !21, metadata !27), !dbg !28
	%cmp = icmp ult i32 %n, 4, !dbg !29
	br i1 %cmp, label %return, label %if.end, !dbg !31

	if.end: ; preds = %entry
	tail call arm_aapcscc void @g(%struct.s* %s, i8* %b, i32 %n) #3, !dbg !32
	br label %return, !dbg !33

	return: ; preds = %if.end, %entry
	%retval.0 = phi i32 [ 0, %if.end ], [ -1, %entry ]
	ret i32 %retval.0, !dbg !34
	}

	; NOTE: This is checking that the register in the DEBUG_VALUE node is not
	; accidentally being marked as KILL. The DBG_VALUE node gets introduced in
	; If-Conversion, and gets bundled into the IT block. The Post RA Scheduler
	; attempts to schedule the Machine Instr, and tries to tag the register in the
	; debug value as KILL'ed, resulting in a DEBUG_VALUE node changing codegen! (or
	; hopefully, triggering an assert).

	; CHECK: BUNDLE implicit-def dead $itstate{{.*}} {
	; CHECK: DBG_VALUE debug-use $r1, debug-use $noreg, !"u"
	; CHECK-NOT: DBG_VALUE killed $r1, $noreg, !"u"

	declare arm_aapcscc void @g(%struct.s, i8, i32) #1

	; Function Attrs: nounwind readnone
	declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2

	attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
	attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
	attributes #2 = { nounwind readnone }
	attributes #3 = { nounwind }

	!llvm.dbg.cu = !{!0}
	!llvm.module.flags = !{!22, !23, !24, !25}
	!llvm.ident = !{!26}

	!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (llvm/trunk 237059)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
	!1 = !DIFile(filename: "<stdin>", directory: "/Users/compnerd/Source/llvm")
	!2 = !{}
	!4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 9, type: !5, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !17)
	!5 = !DISubroutineType(types: !6)
	!6 = !{!7, !8, !11, !12, !16}
	!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
	!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32, align: 32)
	!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "s", file: !1, line: 5, baseType: !10)
	!10 = !DICompositeType(tag: DW_TAG_structure_type, name: "s", file: !1, line: 5, flags: DIFlagFwdDecl)
	!11 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
	!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 32, align: 32)
	!13 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !14)
	!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !1, line: 2, baseType: !15)
	!15 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
	!16 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", file: !1, line: 3, baseType: !11)
	!17 = !{!18, !19, !20, !21}
	!18 = !DILocalVariable(name: "s", arg: 1, scope: !4, file: !1, line: 9, type: !8)
	!19 = !DILocalVariable(name: "u", arg: 2, scope: !4, file: !1, line: 9, type: !11)
	!20 = !DILocalVariable(name: "b", arg: 3, scope: !4, file: !1, line: 9, type: !12)
	!21 = !DILocalVariable(name: "n", arg: 4, scope: !4, file: !1, line: 9, type: !16)
	!22 = !{i32 2, !"Dwarf Version", i32 4}
	!23 = !{i32 2, !"Debug Info Version", i32 3}
	!24 = !{i32 1, !"wchar_size", i32 4}
	!25 = !{i32 1, !"min_enum_size", i32 4}
	!26 = !{!"clang version 3.7.0 (llvm/trunk 237059)"}
	!27 = !DIExpression()
	!28 = !DILocation(line: 9, scope: !4)
	!29 = !DILocation(line: 10, scope: !30)
	!30 = distinct !DILexicalBlock(scope: !4, file: !1, line: 10)
	!31 = !DILocation(line: 10, scope: !4)
	!32 = !DILocation(line: 13, scope: !4)
	!33 = !DILocation(line: 14, scope: !4)
	!34 = !DILocation(line: 15, scope: !4)

	...
	---
	name: f
	alignment: 1
	exposesReturnsTwice: false
	tracksRegLiveness: true
	liveins:
	- { reg: '$r0' }
	- { reg: '$r1' }
	- { reg: '$r2' }
	- { reg: '$r3' }
	calleeSavedRegisters: [ '$lr', '$d8', '$d9', '$d10', '$d11', '$d12', '$d13',
	'$d14', '$d15', '$q4', '$q5', '$q6', '$q7', '$r4',
	'$r5', '$r6', '$r7', '$r8', '$r9', '$r10', '$r11',
	'$s16', '$s17', '$s18', '$s19', '$s20', '$s21',
	'$s22', '$s23', '$s24', '$s25', '$s26', '$s27',
	'$s28', '$s29', '$s30', '$s31', '$d8_d10', '$d9_d11',
	'$d10_d12', '$d11_d13', '$d12_d14', '$d13_d15',
	'$q4_q5', '$q5_q6', '$q6_q7', '$q4_q5_q6_q7', '$r4_r5',
	'$r6_r7', '$r8_r9', '$r10_r11', '$d8_d9_d10', '$d9_d10_d11',
	'$d10_d11_d12', '$d11_d12_d13', '$d12_d13_d14',
	'$d13_d14_d15', '$d8_d10_d12', '$d9_d11_d13', '$d10_d12_d14',
	'$d11_d13_d15', '$d8_d10_d12_d14', '$d9_d11_d13_d15',
	'$d9_d10', '$d11_d12', '$d13_d14', '$d9_d10_d11_d12',
	'$d11_d12_d13_d14' ]
	frameInfo:
	isFrameAddressTaken: false
	isReturnAddressTaken: false
	hasStackMap: false
	hasPatchPoint: false
	stackSize: 8
	offsetAdjustment: 0
	maxAlignment: 4
	adjustsStack: true
	hasCalls: true
	maxCallFrameSize: 0
	hasOpaqueSPAdjustment: false
	hasVAStart: false
	hasMustTailInVarArgFunc: false
	stack:
	- { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr', callee-saved-restored: false }
	- { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '$r7' }
	body: \|
	bb.0.entry:
	liveins: $r0, $r1, $r2, $r3, $lr, $r7

	DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28
	DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
	DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28
	DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28
	t2CMPri $r3, 4, 14, $noreg, implicit-def $cpsr, debug-location !31
	DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
	$r0 = t2MOVi -1, 3, $cpsr, $noreg, implicit undef $r0
	DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
	tBX_RET 3, $cpsr, implicit $r0, debug-location !34
	$sp = frame-setup t2STMDB_UPD $sp, 14, $noreg, killed $r7, killed $lr
	frame-setup CFI_INSTRUCTION def_cfa_offset 8
	frame-setup CFI_INSTRUCTION offset $lr, -4
	frame-setup CFI_INSTRUCTION offset $r7, -8
	DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28
	DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
	DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28
	DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28
	$r1 = tMOVr killed $r2, 14, $noreg, debug-location !32
	$r2 = tMOVr killed $r3, 14, $noreg, debug-location !32
	tBL 14, $noreg, @g, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit-def $sp, debug-location !32
	$r0 = t2MOVi 0, 14, $noreg, $noreg
	$sp = t2LDMIA_RET $sp, 14, $noreg, def $r7, def $pc, implicit $r0

	...