; Test DBG_LABEL MachineInstr under optimization. ; The test case is generated by clang with -O2 is on. ; REQUIRES: asserts ; RUN: llc -debug-only=isel %s -o /dev/null 2> %t.debug ; RUN: cat %t.debug | FileCheck %s --check-prefix=CHECKMI ; ; CHECKMI: DBG_LABEL "end_sum", debug-location !17 ; CHECKMI: DBG_LABEL "end", debug-location !19 source_filename = "debug-label-opt.c" define i32 @foo(i32* nocapture readonly %a, i32 %n) local_unnamed_addr !dbg !7 { entry: call void @llvm.dbg.value(metadata i32* %a, metadata !13, metadata !DIExpression()), !dbg !6 call void @llvm.dbg.value(metadata i32 %n, metadata !14, metadata !DIExpression()), !dbg !6 switch i32 %n, label %end_sum [ i32 2, label %end_sum.sink.split i32 3, label %if.then3 ], !dbg !6 if.then3: ; preds = %entry %arrayidx4 = getelementptr inbounds i32, i32* %a, i64 1, !dbg !6 br label %end_sum.sink.split, !dbg !6 end_sum.sink.split: ; preds = %entry, %if.then3 %a.sink = phi i32* [ %arrayidx4, %if.then3 ], [ %a, %entry ] %.sink = phi i64 [ 2, %if.then3 ], [ 1, %entry ] %0 = load i32, i32* %a.sink, align 4 %arrayidx1 = getelementptr inbounds i32, i32* %a, i64 %.sink %1 = load i32, i32* %arrayidx1, align 4 %add = add nsw i32 %1, %0 br label %end_sum, !dbg !6 end_sum: ; preds = %end_sum.sink.split, %entry %sum.0 = phi i32 [ 0, %entry ], [ %add, %end_sum.sink.split ] call void @llvm.dbg.label(metadata !15), !dbg !17 %2 = load i32, i32* %a, align 4, !dbg !6 %mul = mul nsw i32 %2, %sum.0, !dbg !18 call void @llvm.dbg.label(metadata !16), !dbg !19 ret i32 %mul, !dbg !6 } ; Function Attrs: nounwind readnone speculatable declare void @llvm.dbg.label(metadata) ; Function Attrs: nounwind readnone speculatable declare void @llvm.dbg.value(metadata, metadata, metadata) !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!3, !4, !5} !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) !1 = !DIFile(filename: "debug-label-opt.c", directory: "./") !2 = !{} !3 = !{i32 2, !"Dwarf Version", i32 4} !4 = !{i32 2, !"Debug Info Version", i32 3} !5 = !{i32 1, !"wchar_size", i32 4} !6 = !DILocation(line: 1, column: 14, scope: !7) !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12) !8 = !DISubroutineType(types: !9) !9 = !{!10, !11, !10} !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64) !12 = !{!13, !14, !15, !16} !13 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !11) !14 = !DILocalVariable(name: "n", arg: 2, scope: !7, file: !1, line: 1, type: !10) !15 = !DILabel(scope: !7, name: "end_sum", file: !1, line: 10) !16 = !DILabel(scope: !7, name: "end", file: !1, line: 13) !17 = !DILocation(line: 10, column: 1, scope: !7) !18 = !DILocation(line: 11, column: 7, scope: !7) !19 = !DILocation(line: 13, column: 1, scope: !7)