| ; Test DBG_LABEL MachineInstr for label debugging. |
| ; 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 "top", debug-location !9 |
| ; CHECKMI: DBG_LABEL "done", debug-location !11 |
| ; |
| ; RUN: llc %s -o - | FileCheck %s --check-prefix=CHECKASM |
| ; |
| ; CHECKASM: DEBUG_LABEL: foo:top |
| ; CHECKASM: DEBUG_LABEL: foo:done |
| |
| source_filename = "debug-label-mi.c" |
| |
| ; Function Attrs: noinline nounwind optnone |
| define i32 @foo(i32 signext %a, i32 signext %b) #0 !dbg !4 { |
| entry: |
| %a.addr = alloca i32, align 4 |
| %b.addr = alloca i32, align 4 |
| %sum = alloca i32, align 4 |
| store i32 %a, i32* %a.addr, align 4 |
| store i32 %b, i32* %b.addr, align 4 |
| br label %top |
| |
| top: ; preds = %entry |
| call void @llvm.dbg.label(metadata !8), !dbg !9 |
| %0 = load i32, i32* %a.addr, align 4 |
| %1 = load i32, i32* %b.addr, align 4 |
| %add = add nsw i32 %0, %1 |
| store i32 %add, i32* %sum, align 4 |
| br label %done |
| |
| done: ; preds = %top |
| call void @llvm.dbg.label(metadata !10), !dbg !11 |
| %2 = load i32, i32* %sum, align 4 |
| ret i32 %2 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.label(metadata) |
| |
| attributes #0 = { noinline nounwind optnone uwtable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "debug-label-mi.c", directory: "./") |
| !2 = !{} |
| !3 = !{i32 2, !"Debug Info Version", i32 3} |
| !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, unit: !0, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7, !7, !7} |
| !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !8 = !DILabel(scope: !4, name: "top", file: !1, line: 4) |
| !9 = !DILocation(line: 4, column: 1, scope: !4) |
| !10 = !DILabel(scope: !4, name: "done", file: !1, line: 7) |
| !11 = !DILocation(line: 7, column: 1, scope: !4) |