| # Test to ensure that variable "__last" is properly recovered at the end of the livedebugvalues pass when Instruction Referencing-based LiveDebugValues is used. |
| # This testcase was obtained by looking at FileCheck.cpp and reducing it down via llvm-reduce. |
| # This test is the same as llvm/test/DebugInfo/AArch64/instr-ref-target-hooks.ll, however, the output is taken just before the livedebugvalues pass, and then a clobber |
| # to the stack slot has been added after the first LDRXui in bb.2.if.then13, the livedebugvalues pass should still recover the value, as it was loaded into $x8 before the clobber. |
| |
| # RUN: llc -o - %s -start-before=livedebugvalues -stop-after=livedebugvalues -mtriple=aarch64-apple-darwin | FileCheck %s |
| |
| # CHECK: ![[LOC:[0-9]+]] = !DILocalVariable(name: "__last", |
| # CHECK-LABEL: bb.2.if.then13 |
| # CHECK: STRXui $xzr, $sp, 1 |
| # CHECK-NEXT: DBG_VALUE_LIST ![[LOC]], !DIExpression(DW_OP_LLVM_arg, 0), $x8 |
| |
| --- | |
| ; ModuleID = '/Users/srastogi/Development/llvm-project/llvm/test/DebugInfo/AArch64/instr-ref-target-hooks.ll' |
| source_filename = "/Users/srastogi/Development/llvm-project/llvm/test/DebugInfo/AArch64/instr-ref-target-hooks.ll" |
| target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-n32:64-S128-Fn32" |
| |
| declare void @_ZdlPvm() |
| |
| define fastcc void @"_ZNSt3__111__introsortINS_17_ClassicAlgPolicyERZL18DumpAnnotatedInputRN4llvm11raw_ostreamERKNS2_16FileCheckRequestE20DumpInputFilterValuejNS2_9StringRefERNS_6vectorI15InputAnnotationNS_9allocatorISB_EEEEjE3$_0PSB_Lb0EEEvT1_SJ_T0_NS_15iterator_traitsISJ_E15difference_typeEb"(ptr %__first, ptr %__last, i1 %cmp, ptr %__first.addr.0, ptr %Label3.i.i.i241, ptr %__pivot.sroa.9113.8.copyload.i, ptr %0, ptr %1) !dbg !4 { |
| br label %while.cond |
| |
| while.cond: ; preds = %if.end16, %2 |
| br i1 %cmp, label %if.then13, label %if.end16 |
| |
| if.then13: ; preds = %while.cond |
| %cmp.i = icmp eq ptr %__first, %__last |
| %or.cond.i = select i1 %cmp.i, i1 false, i1 false |
| #dbg_value(ptr %__last, !10, !DIExpression(), !16) |
| br i1 %or.cond.i, label %common.ret, label %for.body.i, !dbg !20 |
| |
| common.ret: ; preds = %for.body.i, %if.then13 |
| ret void |
| |
| for.body.i: ; preds = %if.then13 |
| %InputLine.i.i = getelementptr i8, ptr %__first.addr.0, i64 132 |
| br label %common.ret |
| |
| if.end16: ; preds = %while.cond |
| %__pivot.sroa.13.8.copyload.i = load i64, ptr null, align 8 |
| call void @_ZdlPvm() |
| store ptr %__pivot.sroa.9113.8.copyload.i, ptr %0, align 8 |
| store i64 %__pivot.sroa.13.8.copyload.i, ptr %1, align 8 |
| store i64 0, ptr %__first, align 8 |
| store i32 0, ptr %__first.addr.0, align 8 |
| store i32 1, ptr %Label3.i.i.i241, align 4 |
| br label %while.cond |
| } |
| |
| !llvm.module.flags = !{!0} |
| !llvm.dbg.cu = !{!1} |
| |
| !0 = !{i32 2, !"Debug Info Version", i32 3} |
| !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !2, producer: "clang version 22.0.0git (git@github.com:llvm/llvm-project.git 46a3b4d5dc6dd9449ec7c0c9065552368cdf41d6)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !3, retainedTypes: !3, globals: !3, imports: !3, splitDebugInlining: false, nameTableKind: Apple, sysroot: "/Library/Developer/CommandLineTools/SDKs/MacOSX15.3.sdk", sdk: "MacOSX15.3.sdk") |
| !2 = !DIFile(filename: "/Users/shubhamrastogi/Development/llvm-project-instr-ref/llvm-project/llvm/utils/FileCheck/FileCheck.cpp", directory: "/Users/shubhamrastogi/Development/llvm-project-instr-ref/llvm-project/build-instr-ref-stage2", checksumkind: CSK_MD5, checksum: "fa5f53f1b5782eb8b92fadec416b8941") |
| !3 = !{} |
| !4 = distinct !DISubprogram(name: "__introsort<std::__1::_ClassicAlgPolicy, (lambda at /Users/shubhamrastogi/Development/llvm-project-instr-ref/llvm-project/llvm/utils/FileCheck/FileCheck.cpp:544:14) &, InputAnnotation *, false>", linkageName: "_ZNSt3__111__introsortINS_17_ClassicAlgPolicyERZL18DumpAnnotatedInputRN4llvm11raw_ostreamERKNS2_16FileCheckRequestE20DumpInputFilterValuejNS2_9StringRefERNS_6vectorI15InputAnnotationNS_9allocatorISB_EEEEjE3$_0PSB_Lb0EEEvT1_SJ_T0_NS_15iterator_traitsISJ_E15difference_typeEb", scope: !6, file: !5, line: 758, type: !8, scopeLine: 762, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !1, templateParams: !3, retainedNodes: !3, keyInstructions: true) |
| !5 = !DIFile(filename: "/Library/Developer/CommandLineTools/SDKs/MacOSX15.3.sdk/usr/include/c++/v1/__algorithm/sort.h", directory: "") |
| !6 = !DINamespace(name: "__1", scope: !7, exportSymbols: true) |
| !7 = !DINamespace(name: "std", scope: null) |
| !8 = !DISubroutineType(cc: DW_CC_nocall, types: !9) |
| !9 = !{null} |
| !10 = !DILocalVariable(name: "__last", arg: 2, scope: !11, file: !5, line: 284, type: !13) |
| !11 = distinct !DISubprogram(name: "__insertion_sort<std::__1::_ClassicAlgPolicy, (lambda at /Users/shubhamrastogi/Development/llvm-project-instr-ref/llvm-project/llvm/utils/FileCheck/FileCheck.cpp:544:14) &, InputAnnotation *>", linkageName: "_ZNSt3__116__insertion_sortB8nn180100INS_17_ClassicAlgPolicyERZL18DumpAnnotatedInputRN4llvm11raw_ostreamERKNS2_16FileCheckRequestE20DumpInputFilterValuejNS2_9StringRefERNS_6vectorI15InputAnnotationNS_9allocatorISB_EEEEjE3$_0PSB_EEvT1_SJ_T0_", scope: !6, file: !5, line: 284, type: !12, scopeLine: 284, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !1, templateParams: !3, retainedNodes: !3, keyInstructions: true) |
| !12 = distinct !DISubroutineType(types: !9) |
| !13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64) |
| !14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "InputAnnotation", file: !15, line: 323, size: 768, flags: DIFlagTypePassByReference | DIFlagNonTrivial, elements: !3, identifier: "_ZTS15InputAnnotation") |
| !15 = !DIFile(filename: "llvm/utils/FileCheck/FileCheck.cpp", directory: "/Users/shubhamrastogi/Development/llvm-project-instr-ref/llvm-project", checksumkind: CSK_MD5, checksum: "fa5f53f1b5782eb8b92fadec416b8941") |
| !16 = !DILocation(line: 0, scope: !11, inlinedAt: !17) |
| !17 = distinct !DILocation(line: 800, column: 9, scope: !18) |
| !18 = distinct !DILexicalBlock(scope: !19, file: !5, line: 799, column: 23) |
| !19 = distinct !DILexicalBlock(scope: !4, file: !5, line: 770, column: 16) |
| !20 = !DILocation(line: 288, column: 15, scope: !21, inlinedAt: !17, atomGroup: 1, atomRank: 1) |
| !21 = distinct !DILexicalBlock(scope: !11, file: !5, line: 288, column: 7) |
| ... |
| --- |
| name: '_ZNSt3__111__introsortINS_17_ClassicAlgPolicyERZL18DumpAnnotatedInputRN4llvm11raw_ostreamERKNS2_16FileCheckRequestE20DumpInputFilterValuejNS2_9StringRefERNS_6vectorI15InputAnnotationNS_9allocatorISB_EEEEjE3$_0PSB_Lb0EEEvT1_SJ_T0_NS_15iterator_traitsISJ_E15difference_typeEb' |
| alignment: 4 |
| tracksRegLiveness: true |
| noPhis: true |
| isSSA: false |
| noVRegs: true |
| hasFakeUses: false |
| debugInstrRef: true |
| tracksDebugUserValues: true |
| liveins: |
| - { reg: '$x0' } |
| - { reg: '$x1' } |
| - { reg: '$w2' } |
| - { reg: '$x3' } |
| - { reg: '$x4' } |
| - { reg: '$x5' } |
| - { reg: '$x6' } |
| - { reg: '$x7' } |
| frameInfo: |
| stackSize: 112 |
| maxAlignment: 8 |
| adjustsStack: true |
| hasCalls: true |
| maxCallFrameSize: 0 |
| isCalleeSavedInfoValid: true |
| stack: |
| - { id: 0, type: spill-slot, offset: -104, size: 8, alignment: 8 } |
| - { id: 1, type: spill-slot, offset: -8, size: 8, alignment: 8, callee-saved-register: '$lr' } |
| - { id: 2, type: spill-slot, offset: -16, size: 8, alignment: 8, callee-saved-register: '$fp' } |
| - { id: 3, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$x19' } |
| - { id: 4, type: spill-slot, offset: -32, size: 8, alignment: 8, callee-saved-register: '$x20' } |
| - { id: 5, type: spill-slot, offset: -40, size: 8, alignment: 8, callee-saved-register: '$x21' } |
| - { id: 6, type: spill-slot, offset: -48, size: 8, alignment: 8, callee-saved-register: '$x22' } |
| - { id: 7, type: spill-slot, offset: -56, size: 8, alignment: 8, callee-saved-register: '$x23' } |
| - { id: 8, type: spill-slot, offset: -64, size: 8, alignment: 8, callee-saved-register: '$x24' } |
| - { id: 9, type: spill-slot, offset: -72, size: 8, alignment: 8, callee-saved-register: '$x25' } |
| - { id: 10, type: spill-slot, offset: -80, size: 8, alignment: 8, callee-saved-register: '$x26' } |
| - { id: 11, type: spill-slot, offset: -88, size: 8, alignment: 8, callee-saved-register: '$x27' } |
| - { id: 12, type: spill-slot, offset: -96, size: 8, alignment: 8, callee-saved-register: '$x28' } |
| machineFunctionInfo: |
| hasRedZone: false |
| stackSizeZPR: 0 |
| stackSizePPR: 0 |
| hasStackFrame: true |
| body: | |
| bb.0 (%ir-block.2): |
| successors: %bb.2(0x04000000), %bb.3(0x7c000000) |
| liveins: $w2, $x0, $x1, $x3, $x4, $x5, $x6, $x7, $x27, $x28, $x25, $x26, $x23, $x24, $x21, $x22, $x19, $x20, $lr |
| |
| $sp = frame-setup SUBXri $sp, 112, 0 |
| frame-setup STPXi killed $x28, killed $x27, $sp, 2 :: (store (s64) into %stack.12), (store (s64) into %stack.11) |
| frame-setup STPXi killed $x26, killed $x25, $sp, 4 :: (store (s64) into %stack.10), (store (s64) into %stack.9) |
| frame-setup STPXi killed $x24, killed $x23, $sp, 6 :: (store (s64) into %stack.8), (store (s64) into %stack.7) |
| frame-setup STPXi killed $x22, killed $x21, $sp, 8 :: (store (s64) into %stack.6), (store (s64) into %stack.5) |
| frame-setup STPXi killed $x20, killed $x19, $sp, 10 :: (store (s64) into %stack.4), (store (s64) into %stack.3) |
| frame-setup STPXi $fp, killed $lr, $sp, 12 :: (store (s64) into %stack.2), (store (s64) into %stack.1) |
| frame-setup CFI_INSTRUCTION def_cfa_offset 112 |
| frame-setup CFI_INSTRUCTION offset $w30, -8 |
| frame-setup CFI_INSTRUCTION offset $w29, -16 |
| frame-setup CFI_INSTRUCTION offset $w19, -24 |
| frame-setup CFI_INSTRUCTION offset $w20, -32 |
| frame-setup CFI_INSTRUCTION offset $w21, -40 |
| frame-setup CFI_INSTRUCTION offset $w22, -48 |
| frame-setup CFI_INSTRUCTION offset $w23, -56 |
| frame-setup CFI_INSTRUCTION offset $w24, -64 |
| frame-setup CFI_INSTRUCTION offset $w25, -72 |
| frame-setup CFI_INSTRUCTION offset $w26, -80 |
| frame-setup CFI_INSTRUCTION offset $w27, -88 |
| frame-setup CFI_INSTRUCTION offset $w28, -96 |
| DBG_PHI $x1, 1 |
| $x19 = ORRXrs $xzr, killed $x7, 0 |
| $x20 = ORRXrs $xzr, killed $x6, 0 |
| $x21 = ORRXrs $xzr, killed $x5, 0 |
| $x22 = ORRXrs $xzr, killed $x4, 0 |
| $x23 = ORRXrs $xzr, killed $x3, 0 |
| $w25 = ORRWrs $wzr, killed $w2, 0 |
| $x26 = ORRXrs $xzr, killed $x0, 0 |
| renamable $w27 = MOVZWi 1, 0 |
| STRXui killed $x1, $sp, 1 :: (store (s64) into %stack.0) |
| TBNZW renamable $w25, 0, %bb.2 |
| |
| bb.3.if.end16: |
| successors: %bb.2(0x04000000), %bb.3(0x7c000000) |
| liveins: $w25, $w27, $x19, $x20, $x21, $x22, $x23, $x26 |
| |
| $x28 = ORRXrs $xzr, $xzr, 0 |
| renamable $x24 = LDRXui killed renamable $x28, 0 :: (load (s64) from `ptr null`) |
| BL @_ZdlPvm, csr_darwin_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp |
| STRXui renamable $x21, renamable $x20, 0 :: (store (s64) into %ir.0) |
| STRXui killed renamable $x24, renamable $x19, 0 :: (store (s64) into %ir.1) |
| STRXui $xzr, renamable $x26, 0 :: (store (s64) into %ir.__first) |
| STRWui $wzr, renamable $x23, 0 :: (store (s32) into %ir.__first.addr.0, align 8) |
| STRWui renamable $w27, renamable $x22, 0 :: (store (s32) into %ir.Label3.i.i.i241) |
| TBZW renamable $w25, 0, %bb.3 |
| |
| bb.2.if.then13: |
| liveins: $x26 |
| |
| DBG_INSTR_REF !10, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !16 |
| renamable $x8 = LDRXui $sp, 1 :: (load (s64) from %stack.0) |
| ; Clobber the stack slot that contains the value we care about, to ensure that LDV can still recover it from $x8 above |
| STRXui $xzr, $sp, 1 :: (store (s64) into %stack.0) |
| $fp, $lr = frame-destroy LDPXi $sp, 12 :: (load (s64) from %stack.2), (load (s64) from %stack.1) |
| $x20, $x19 = frame-destroy LDPXi $sp, 10 :: (load (s64) from %stack.4), (load (s64) from %stack.3) |
| $xzr = SUBSXrs killed renamable $x26, killed renamable $x8, 0, implicit-def $nzcv, debug-location !20 |
| $x22, $x21 = frame-destroy LDPXi $sp, 8 :: (load (s64) from %stack.6), (load (s64) from %stack.5) |
| $x24, $x23 = frame-destroy LDPXi $sp, 6 :: (load (s64) from %stack.8), (load (s64) from %stack.7) |
| $x26, $x25 = frame-destroy LDPXi $sp, 4 :: (load (s64) from %stack.10), (load (s64) from %stack.9) |
| $x28, $x27 = frame-destroy LDPXi $sp, 2 :: (load (s64) from %stack.12), (load (s64) from %stack.11) |
| $sp = frame-destroy ADDXri $sp, 112, 0 |
| RET undef $lr |
| ... |
