| # RUN: llc -start-after=livedebugvalues --filetype=obj %s -o - \ |
| # RUN: | llvm-dwarfdump -v --name local - \ |
| # RUN: | FileCheck %s |
| # |
| ## Generated with opt -inline -mem2reg, llc -stop-after=livedebugvalues from: |
| ## int glob; |
| ## int ext1(int); |
| ## int ext2(int); |
| ## |
| ## __attribute__((always_inline)) |
| ## static int inline_me() { |
| ## int local = glob; |
| ## int r = 0; |
| ## if (local) |
| ## r = ext1(local); |
| ## else |
| ## r = ext2(local); |
| ## return r * local; |
| ## } |
| ## |
| ## int fun(int p) { |
| ## glob = p; |
| ## glob = inline_me(); |
| ## return 0; |
| ## } |
| ## |
| ## Check that the location for inlined variable 'local' (RBX), which spans |
| ## multiple basic blocks, is given a single location. |
| # |
| # CHECK: DW_AT_location [DW_FORM_exprloc] (DW_OP_reg3 RBX) |
| # CHECK-NEXT: DW_AT_abstract_origin [DW_FORM_ref4] ({{.*}}"local") |
| |
| --- | |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @glob = dso_local global i32 0, align 4, !dbg !0 |
| |
| define dso_local i32 @_Z3funi(i32 %p) !dbg !11 { |
| entry: |
| call void @llvm.dbg.value(metadata i32 %p, metadata !15, metadata !DIExpression()), !dbg !16 |
| store i32 %p, i32* @glob, align 4, !dbg !17 |
| %0 = load i32, i32* @glob, align 4, !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %0, metadata !27, metadata !DIExpression()), !dbg !30 |
| call void @llvm.dbg.value(metadata i32 0, metadata !28, metadata !DIExpression()), !dbg !30 |
| %tobool.i = icmp ne i32 %0, 0, !dbg !31 |
| br i1 %tobool.i, label %if.then.i, label %if.else.i, !dbg !33 |
| |
| if.then.i: ; preds = %entry |
| %call.i = call i32 @_Z4ext1i(i32 %0), !dbg !34 |
| call void @llvm.dbg.value(metadata i32 %call.i, metadata !28, metadata !DIExpression()), !dbg !30 |
| br label %_ZL9inline_mev.exit, !dbg !35 |
| |
| if.else.i: ; preds = %entry |
| %call1.i = call i32 @_Z4ext2i(i32 %0), !dbg !36 |
| call void @llvm.dbg.value(metadata i32 %call1.i, metadata !28, metadata !DIExpression()), !dbg !30 |
| br label %_ZL9inline_mev.exit |
| |
| _ZL9inline_mev.exit: ; preds = %if.else.i, %if.then.i |
| %r.0.i = phi i32 [ %call.i, %if.then.i ], [ %call1.i, %if.else.i ], !dbg !37 |
| call void @llvm.dbg.value(metadata i32 %r.0.i, metadata !28, metadata !DIExpression()), !dbg !30 |
| %mul.i = mul nsw i32 %r.0.i, %0, !dbg !38 |
| store i32 %mul.i, i32* @glob, align 4, !dbg !39 |
| ret i32 0, !dbg !40 |
| } |
| |
| declare !dbg !41 dso_local i32 @_Z4ext1i(i32) |
| declare !dbg !42 dso_local i32 @_Z4ext2i(i32) |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!2} |
| !llvm.module.flags = !{!7, !8, !9} |
| !llvm.ident = !{!10} |
| |
| !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) |
| !1 = distinct !DIGlobalVariable(name: "glob", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) |
| !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) |
| !3 = !DIFile(filename: "test.cpp", directory: "/") |
| !4 = !{} |
| !5 = !{!0} |
| !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !7 = !{i32 7, !"Dwarf Version", i32 4} |
| !8 = !{i32 2, !"Debug Info Version", i32 3} |
| !9 = !{i32 1, !"wchar_size", i32 4} |
| !10 = !{!"clang version 12.0.0"} |
| !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) |
| !12 = !DISubroutineType(types: !13) |
| !13 = !{!6, !6} |
| !14 = !{!15} |
| !15 = !DILocalVariable(name: "p", arg: 1, scope: !11, file: !3, line: 16, type: !6) |
| !16 = !DILocation(line: 0, scope: !11) |
| !17 = !DILocation(line: 17, column: 8, scope: !11) |
| !22 = !DILocation(line: 7, column: 15, scope: !23, inlinedAt: !29) |
| !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) |
| !24 = !DISubroutineType(types: !25) |
| !25 = !{!6} |
| !26 = !{!27, !28} |
| !27 = !DILocalVariable(name: "local", scope: !23, file: !3, line: 7, type: !6) |
| !28 = !DILocalVariable(name: "r", scope: !23, file: !3, line: 8, type: !6) |
| !29 = distinct !DILocation(line: 18, column: 10, scope: !11) |
| !30 = !DILocation(line: 0, scope: !23, inlinedAt: !29) |
| !31 = !DILocation(line: 9, column: 7, scope: !32, inlinedAt: !29) |
| !32 = distinct !DILexicalBlock(scope: !23, file: !3, line: 9, column: 7) |
| !33 = !DILocation(line: 9, column: 7, scope: !23, inlinedAt: !29) |
| !34 = !DILocation(line: 10, column: 9, scope: !32, inlinedAt: !29) |
| !35 = !DILocation(line: 10, column: 5, scope: !32, inlinedAt: !29) |
| !36 = !DILocation(line: 12, column: 9, scope: !32, inlinedAt: !29) |
| !37 = !DILocation(line: 0, scope: !32, inlinedAt: !29) |
| !38 = !DILocation(line: 13, column: 12, scope: !23, inlinedAt: !29) |
| !39 = !DILocation(line: 18, column: 8, scope: !11) |
| !40 = !DILocation(line: 19, column: 3, scope: !11) |
| !41 = !DISubprogram(name: "ext1", linkageName: "_Z4ext1i", scope: !3, file: !3, line: 2, type: !12, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4) |
| !42 = !DISubprogram(name: "ext2", linkageName: "_Z4ext2i", scope: !3, file: !3, line: 3, type: !12, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4) |
| |
| ... |
| --- |
| name: _Z3funi |
| body: | |
| bb.0.entry: |
| successors: %bb.1(0x50000000), %bb.2(0x30000000) |
| liveins: $edi, $rbx |
| |
| DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !16 |
| frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| CFI_INSTRUCTION offset $rbx, -16 |
| $ebx = MOV32rr $edi |
| DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16 |
| MOV32mr $rip, 1, $noreg, @glob, $noreg, $edi, debug-location !17 :: (store (s32) into @glob) |
| DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30 |
| DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30 |
| TEST32rr $edi, $edi, implicit-def $eflags, debug-location !31 |
| JCC_1 %bb.2, 4, implicit killed $eflags, debug-location !33 |
| |
| bb.1.if.then.i: |
| successors: %bb.3(0x80000000) |
| liveins: $ebx |
| |
| DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30 |
| DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16 |
| DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30 |
| $edi = MOV32rr $ebx, debug-location !34 |
| CALL64pcrel32 @_Z4ext1i, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !34 |
| DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30 |
| JMP_1 %bb.3 |
| |
| bb.2.if.else.i: |
| successors: %bb.3(0x80000000) |
| liveins: $ebx |
| |
| DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30 |
| DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16 |
| DBG_VALUE 0, $noreg, !28, !DIExpression(), debug-location !30 |
| $edi = MOV32rr $ebx, debug-location !36 |
| CALL64pcrel32 @_Z4ext2i, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !36 |
| DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30 |
| |
| bb.3._ZL9inline_mev.exit: |
| liveins: $eax, $ebx |
| |
| DBG_VALUE $ebx, $noreg, !27, !DIExpression(), debug-location !30 |
| DBG_VALUE $ebx, $noreg, !15, !DIExpression(), debug-location !16 |
| DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30 |
| DBG_VALUE $eax, $noreg, !28, !DIExpression(), debug-location !30 |
| renamable $eax = nsw IMUL32rr killed renamable $eax, killed renamable $ebx, implicit-def dead $eflags, debug-location !38 |
| MOV32mr $rip, 1, $noreg, @glob, $noreg, killed renamable $eax, debug-location !39 :: (store (s32) into @glob) |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !40 |
| $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !40 |
| DBG_VALUE $edi, $noreg, !15, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !16 |
| CFI_INSTRUCTION def_cfa_offset 8, debug-location !40 |
| RET64 $eax, debug-location !40 |
| |
| ... |