| ; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \ |
| ; RUN: -experimental-debug-variable-locations=false \ |
| ; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE |
| ; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \ |
| ; RUN: -experimental-debug-variable-locations=true \ |
| ; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF |
| |
| ; Test that dbg.values of an SSA variable that's not used in a basic block, |
| ; is converted to a DBG_VALUE in that same basic block. We know that %1 is |
| ; live from the entry bb to the exit bb, is allocated a vreg because it's |
| ; used across basic blocks. We should be able to produce a DBG_VALUE that |
| ; refers to it in the nextbb block. |
| |
| source_filename = "debug.c" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Function Attrs: nounwind uwtable |
| define dso_local i32 @main(i32 %arg0, i32 %arg1) local_unnamed_addr !dbg !11 { |
| entry: |
| ; CHECK-LABEL: bb.0.entry: |
| ; INSTRREF: ADD32ri {{.*}} debug-instr-number 1 |
| %0 = add i32 %arg0, 42, !dbg !26 |
| %1 = add i32 %arg1, 101, !dbg !26 |
| %cmp = icmp eq i32 %1, 0 |
| br i1 %cmp, label %nextbb, label %exit, !dbg !26 |
| |
| nextbb: |
| ; CHECK-LABEL: bb.{{.*}}.nextbb |
| %2 = mul i32 %0, %arg1, !dbg !26 |
| ; CHECK: IMUL32rr |
| call void @llvm.dbg.value(metadata i32 %1, metadata !16, metadata !DIExpression()), !dbg !27 |
| ; INSTRREF-NEXT: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)
|
| ; DBGVALUE-NEXT: DBG_VALUE |
| br label %exit, !dbg !26 |
| |
| ; CHECK-LABEL: bb.{{.*}}.exit |
| exit: |
| %3 = phi i32 [ 12, %entry ], [ %2, %nextbb ], !dbg !26 |
| %4 = add i32 %1, %3, !dbg !26 |
| ret i32 %4, !dbg !26 |
| } |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!2} |
| !llvm.module.flags = !{!7, !8, !9} |
| !llvm.ident = !{!10} |
| |
| !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4) |
| !3 = !DIFile(filename: "debug.c", directory: "") |
| !4 = !{} |
| !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !7 = !{i32 2, !"Dwarf Version", i32 4} |
| !8 = !{i32 2, !"Debug Info Version", i32 3} |
| !9 = !{i32 1, !"wchar_size", i32 4} |
| !10 = !{!"clang version 7.0.0 (x)"} |
| !11 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, retainedNodes: !14) |
| !12 = !DISubroutineType(types: !13) |
| !13 = !{!6} |
| !14 = !{!16} |
| !16 = !DILocalVariable(name: "y", scope: !11, file: !3, line: 5, type: !6) |
| !26 = !DILocation(line: 4, column: 7, scope: !11) |
| !27 = !DILocation(line: 5, column: 7, scope: !11) |
| !31 = !{!32, !32, i64 0} |
| !32 = !{!"int", !33, i64 0} |
| !33 = !{!"omnipotent char", !34, i64 0} |
| !34 = !{!"Simple C/C++ TBAA"} |