173 lines
8.2 KiB
Plaintext
173 lines
8.2 KiB
Plaintext
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# RUN: llc -start-after=livedebugvalues --filetype=obj %s -o - \
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# RUN: | llvm-dwarfdump -v --name local - \
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# RUN: | FileCheck %s
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#
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## Generated with opt -inline -mem2reg, llc -stop-after=livedebugvalues from:
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## int glob;
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## int ext1(int);
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## int ext2(int);
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##
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## __attribute__((always_inline))
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## static int inline_me() {
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## int local = glob;
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## int r = 0;
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## if (local)
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## r = ext1(local);
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## else
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## r = ext2(local);
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## return r * local;
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## }
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##
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## int fun(int p) {
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## glob = p;
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## glob = inline_me();
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## return 0;
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## }
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##
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## Check that the location for inlined variable 'local' (RBX), which spans
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## multiple basic blocks, is given a single location.
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#
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# CHECK: DW_AT_location [DW_FORM_exprloc] (DW_OP_reg3 RBX)
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# CHECK-NEXT: DW_AT_abstract_origin [DW_FORM_ref4] ({{.*}}"local")
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--- |
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target triple = "x86_64-unknown-linux-gnu"
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@glob = dso_local global i32 0, align 4, !dbg !0
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define dso_local i32 @_Z3funi(i32 %p) !dbg !11 {
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entry:
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call void @llvm.dbg.value(metadata i32 %p, metadata !15, metadata !DIExpression()), !dbg !16
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store i32 %p, i32* @glob, align 4, !dbg !17
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%0 = load i32, i32* @glob, align 4, !dbg !22
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call void @llvm.dbg.value(metadata i32 %0, metadata !27, metadata !DIExpression()), !dbg !30
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call void @llvm.dbg.value(metadata i32 0, metadata !28, metadata !DIExpression()), !dbg !30
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%tobool.i = icmp ne i32 %0, 0, !dbg !31
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br i1 %tobool.i, label %if.then.i, label %if.else.i, !dbg !33
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if.then.i: ; preds = %entry
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%call.i = call i32 @_Z4ext1i(i32 %0), !dbg !34
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call void @llvm.dbg.value(metadata i32 %call.i, metadata !28, metadata !DIExpression()), !dbg !30
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br label %_ZL9inline_mev.exit, !dbg !35
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if.else.i: ; preds = %entry
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%call1.i = call i32 @_Z4ext2i(i32 %0), !dbg !36
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call void @llvm.dbg.value(metadata i32 %call1.i, metadata !28, metadata !DIExpression()), !dbg !30
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br label %_ZL9inline_mev.exit
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_ZL9inline_mev.exit: ; preds = %if.else.i, %if.then.i
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%r.0.i = phi i32 [ %call.i, %if.then.i ], [ %call1.i, %if.else.i ], !dbg !37
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call void @llvm.dbg.value(metadata i32 %r.0.i, metadata !28, metadata !DIExpression()), !dbg !30
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%mul.i = mul nsw i32 %r.0.i, %0, !dbg !38
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store i32 %mul.i, i32* @glob, align 4, !dbg !39
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ret i32 0, !dbg !40
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}
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declare !dbg !41 dso_local i32 @_Z4ext1i(i32)
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declare !dbg !42 dso_local i32 @_Z4ext2i(i32)
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9}
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!llvm.ident = !{!10}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "glob", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)
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!3 = !DIFile(filename: "test.cpp", directory: "/")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!7 = !{i32 7, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = !{!"clang version 12.0.0"}
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!11 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funi", scope: !3, file: !3, line: 16, type: !12, scopeLine: 16, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !14)
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!12 = !DISubroutineType(types: !13)
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!13 = !{!6, !6}
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!14 = !{!15}
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!15 = !DILocalVariable(name: "p", arg: 1, scope: !11, file: !3, line: 16, type: !6)
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!16 = !DILocation(line: 0, scope: !11)
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!17 = !DILocation(line: 17, column: 8, scope: !11)
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!22 = !DILocation(line: 7, column: 15, scope: !23, inlinedAt: !29)
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!23 = distinct !DISubprogram(name: "inline_me", linkageName: "_ZL9inline_mev", scope: !3, file: !3, line: 6, type: !24, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !26)
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!24 = !DISubroutineType(types: !25)
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!25 = !{!6}
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!26 = !{!27, !28}
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!27 = !DILocalVariable(name: "local", scope: !23, file: !3, line: 7, type: !6)
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!28 = !DILocalVariable(name: "r", scope: !23, file: !3, line: 8, type: !6)
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!29 = distinct !DILocation(line: 18, column: 10, scope: !11)
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!30 = !DILocation(line: 0, scope: !23, inlinedAt: !29)
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!31 = !DILocation(line: 9, column: 7, scope: !32, inlinedAt: !29)
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!32 = distinct !DILexicalBlock(scope: !23, file: !3, line: 9, column: 7)
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!33 = !DILocation(line: 9, column: 7, scope: !23, inlinedAt: !29)
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!34 = !DILocation(line: 10, column: 9, scope: !32, inlinedAt: !29)
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!35 = !DILocation(line: 10, column: 5, scope: !32, inlinedAt: !29)
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!36 = !DILocation(line: 12, column: 9, scope: !32, inlinedAt: !29)
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!37 = !DILocation(line: 0, scope: !32, inlinedAt: !29)
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!38 = !DILocation(line: 13, column: 12, scope: !23, inlinedAt: !29)
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!39 = !DILocation(line: 18, column: 8, scope: !11)
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!40 = !DILocation(line: 19, column: 3, scope: !11)
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!41 = !DISubprogram(name: "ext1", linkageName: "_Z4ext1i", scope: !3, file: !3, line: 2, type: !12, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
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!42 = !DISubprogram(name: "ext2", linkageName: "_Z4ext2i", scope: !3, file: !3, line: 3, type: !12, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
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...
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---
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name: _Z3funi
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body: |
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bb.0.entry:
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successors: %bb.1(0x50000000), %bb.2(0x30000000)
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liveins: $edi, $rbx
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DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !16
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frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
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CFI_INSTRUCTION def_cfa_offset 16
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CFI_INSTRUCTION offset $rbx, -16
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$ebx = MOV32rr $edi
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DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16
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MOV32mr $rip, 1, $noreg, @glob, $noreg, $edi, debug-location !17 :: (store 4 into @glob)
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DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30
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DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30
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TEST32rr $edi, $edi, implicit-def $eflags, debug-location !31
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JCC_1 %bb.2, 4, implicit killed $eflags, debug-location !33
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bb.1.if.then.i:
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successors: %bb.3(0x80000000)
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liveins: $ebx
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DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30
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DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16
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DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30
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$edi = MOV32rr $ebx, debug-location !34
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CALL64pcrel32 @_Z4ext1i, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !34
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DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30
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JMP_1 %bb.3
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bb.2.if.else.i:
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successors: %bb.3(0x80000000)
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liveins: $ebx
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DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30
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DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16
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DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30
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$edi = MOV32rr $ebx, debug-location !36
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CALL64pcrel32 @_Z4ext2i, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !36
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DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30
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bb.3._ZL9inline_mev.exit:
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liveins: $eax, $ebx
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DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30
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DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16
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DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30
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DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30
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renamable $eax = nsw IMUL32rr killed renamable $eax, killed renamable $ebx, implicit-def dead $eflags, debug-location !38
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MOV32mr $rip, 1, $noreg, @glob, $noreg, killed renamable $eax, debug-location !39 :: (store 4 into @glob)
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$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !40
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$rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !40
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DBG_VALUE $edi, $noreg, !15, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !16
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CFI_INSTRUCTION def_cfa_offset 8, debug-location !40
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RETQ $eax, debug-location !40
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...
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