| # RUN: llc %s -o - -run-pass=livedebugvalues -march=x86-64 \ |
| # RUN: -experimental-debug-variable-locations=true \ |
| # RUN: | FileCheck %s |
| # |
| ## This test used to crash InstrRefBasedLDV, due to fragment information going |
| ## missing; test for that, and also check what happens when we have assignments |
| ## outside of lexical scope. In the IR below, "_First" is only in scope in the |
| ## entry block, but is assigned in every block. Under current behaviour, that |
| ## means that InstrRefBasedLDV will propagate its location through all blocks. |
| # |
| # CHECK: ![[FIRSTVAR:[0-9]+]] = !DILocalVariable(name: "_First", |
| # |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE $rbx, $noreg, ![[FIRSTVAR]], |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| # |
| # CHECK-LABEL: bb.1.if.then.i.i.i.i.i: |
| # CHECK: DBG_VALUE $rbx, $noreg, ![[FIRSTVAR]], |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| # CHECK: DBG_INSTR_REF {{.*}} ![[FIRSTVAR]], |
| # CHECK: DBG_VALUE $rbx, $noreg, ![[FIRSTVAR]], |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| |
| # CHECK-LABEL: bb.2._Z17do_insert_cv_testI5_TreeEvv.exit: |
| # CHECK: DBG_VALUE $rbx, $noreg, ![[FIRSTVAR]], |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| # CHECK: DBG_INSTR_REF {{.*}} ![[FIRSTVAR]], |
| # CHECK: DBG_VALUE $rbx, $noreg, ![[FIRSTVAR]], |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 64, 64) |
| |
| --- | |
| source_filename = "reduced.ll" |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| |
| %class._Tree = type { i8 } |
| %class._Tree_const_iterator = type { %class._Tree_unchecked_const_iterator } |
| %class._Tree_unchecked_const_iterator = type { %struct._Iterator_base0, i32* } |
| %struct._Iterator_base0 = type { i32 } |
| |
| define i32 @main({ i32, i32* } %call.i) !dbg !6 { |
| entry: |
| call void @llvm.dbg.value(metadata i32 2, metadata !10, metadata !DIExpression()), !dbg !12 |
| %call.i1 = call { i32, i32* } undef(%class._Tree* null) |
| %0 = extractvalue { i32, i32* } %call.i, 1 |
| call void @llvm.dbg.value(metadata i32* %0, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !15 |
| %call.i.i.i.i.i = call i8 undef(i32* null), !dbg !15 |
| br i1 undef, label %_Z17do_insert_cv_testI5_TreeEvv.exit, label %if.then.i.i.i.i.i |
| |
| if.then.i.i.i.i.i: |
| %call3.i.i.i.i.i = call i32* undef(i32* null) |
| call void @llvm.dbg.value(metadata i32* %call3.i.i.i.i.i, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !15 |
| br label %_Z17do_insert_cv_testI5_TreeEvv.exit |
| |
| _Z17do_insert_cv_testI5_TreeEvv.exit: |
| %_First.sroa.2.0.i.i = phi i32* [ %0, %entry ], [ %call3.i.i.i.i.i, %if.then.i.i.i.i.i ] |
| call void @llvm.dbg.value(metadata i32* %_First.sroa.2.0.i.i, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !15 |
| call void undef(%class._Tree_const_iterator* null, i32 0, i32* %_First.sroa.2.0.i.i), !dbg !16 |
| ret i32 0 |
| } |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!2, !3, !4, !5} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 14.0.0 (git@github.com:llvm/llvm-project ffb249520766d4e2ca120c09dae7afa3d64ef81d)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "toolchain10279.cpp", directory: "/home/jmorse") |
| !2 = !{i32 7, !"Dwarf Version", i32 4} |
| !3 = !{i32 2, !"Debug Info Version", i32 3} |
| !4 = !{i32 1, !"wchar_size", i32 4} |
| !5 = !{i32 7, !"uwtable", i32 1} |
| !6 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 52, type: !7, scopeLine: 52, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0) |
| !7 = !DISubroutineType(types: !8) |
| !8 = !{!9} |
| !9 = !DIBasicType(name: "int", size: 128, encoding: DW_ATE_signed) |
| !10 = !DILocalVariable(name: "v1", scope: !11, file: !1, line: 47, type: !9) |
| !11 = distinct !DILexicalBlock(scope: !6) |
| !12 = !DILocation(line: 0, scope: !11) |
| !13 = !DILocalVariable(name: "_First", arg: 1, scope: !14, file: !1, line: 11, type: !9) |
| !14 = distinct !DILexicalBlock(scope: !6) |
| !15 = !DILocation(line: 0, scope: !14) |
| !16 = !DILocation(line: 50, column: 11, scope: !11) |
| |
| ... |
| --- |
| name: main |
| alignment: 16 |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '$rsi' } |
| frameInfo: |
| stackSize: 24 |
| offsetAdjustment: -24 |
| maxAlignment: 1 |
| adjustsStack: true |
| hasCalls: true |
| maxCallFrameSize: 0 |
| cvBytesOfCalleeSavedRegisters: 16 |
| fixedStack: |
| - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$rbx' } |
| - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$r14' } |
| machineFunctionInfo: {} |
| body: | |
| bb.0.entry: |
| liveins: $rsi, $r14, $rbx |
| |
| frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 24 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 32 |
| CFI_INSTRUCTION offset $rbx, -24 |
| CFI_INSTRUCTION offset $r14, -16 |
| DBG_PHI $rsi, 2 |
| $rbx = MOV64rr $rsi |
| DBG_VALUE 2, $noreg, !10, !DIExpression(), debug-location !12 |
| renamable $r14d = XOR32rr undef $r14d, undef $r14d, implicit-def dead $eflags, implicit-def $r14 |
| dead $edi = XOR32rr undef $edi, undef $edi, implicit-def dead $eflags, implicit-def $rdi |
| CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $eax, implicit-def dead $rdx |
| DBG_INSTR_REF 2, 0, !13, !DIExpression(DW_OP_LLVM_fragment, 64, 64), debug-location !15 |
| dead $edi = XOR32rr undef $edi, undef $edi, implicit-def dead $eflags, implicit-def $rdi, debug-location !15 |
| CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $al, debug-location !15 |
| TEST8rr renamable $r14b, renamable $r14b, implicit-def $eflags, implicit killed $r14 |
| JCC_1 %bb.2, 5, implicit $eflags |
| |
| bb.1.if.then.i.i.i.i.i: |
| dead $edi = XOR32rr undef $edi, undef $edi, implicit-def dead $eflags, implicit-def $rdi |
| CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $rax, debug-instr-number 3 |
| $rbx = MOV64rr killed $rax |
| DBG_INSTR_REF 3, 7, !13, !DIExpression(DW_OP_LLVM_fragment, 64, 64), debug-location !15 |
| |
| bb.2._Z17do_insert_cv_testI5_TreeEvv.exit: |
| liveins: $rbx |
| |
| DBG_PHI $rbx, 1 |
| DBG_INSTR_REF 1, 0, !13, !DIExpression(DW_OP_LLVM_fragment, 64, 64), debug-location !15 |
| dead $edi = XOR32rr undef $edi, undef $edi, implicit-def dead $eflags, implicit-def $rdi, debug-location !16 |
| $esi = XOR32rr undef $esi, undef $esi, implicit-def dead $eflags, debug-location !16 |
| $rdx = MOV64rr killed $rbx, debug-location !16 |
| CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit $esi, implicit killed $rdx, implicit-def $rsp, implicit-def $ssp, debug-location !16 |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags |
| $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags |
| CFI_INSTRUCTION def_cfa_offset 24 |
| $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| $r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 8 |
| RET64 killed $eax |
| |
| ... |
