| # 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 |
| |
| ... |
