| ; RUN: llc -mtriple=x86_64-- %s -o - -O0 -stop-before=finalize-isel \ |
| ; RUN: -experimental-debug-variable-locations \ |
| ; RUN: | FileCheck %s --check-prefix=O0 --implicit-check-not=DBG_INSTR_REF |
| ; RUN: llc -mtriple=x86_64-- %s -o - -O2 -stop-before=finalize-isel \ |
| ; RUN: -experimental-debug-variable-locations \ |
| ; RUN: | FileCheck %s --check-prefix=O2 --implicit-check-not=DBG_VALUE |
| ; RUN: llc -mtriple=x86_64-- %s -o - -stop-before=finalize-isel \ |
| ; RUN: -fast-isel -experimental-debug-variable-locations \ |
| ; RUN: | FileCheck %s --check-prefix=FASTISEL --implicit-check-not=DBG_VALUE |
| |
| ; Test that instruction-referencing variable locations are issued at -O2, but |
| ; normal DBG_VALUEs are issued at -O0. This behaviour is desired as the former |
| ; is slow when applied to unoptimized code. |
| ; (Copy + pasted from ./dead-store-elimination-marks-undef.ll), |
| |
| ; O0-LABEL: name: main |
| ; O0: DBG_VALUE |
| ; O0-LABEL: name: fn_optnone |
| ; O0: DBG_VALUE |
| |
| ; O2-LABEL: name: main |
| ; O2: DBG_INSTR_REF |
| ; O2-LABEL: name: fn_optnone |
| ; O2: DBG_VALUE |
| |
| ; FASTISEL-LABEL: name: main |
| ; FASTISEL: DBG_INSTR_REF |
| ; FASTISEL-LABEL: name: fn_optnone |
| ; FASTISEL: DBG_VALUE |
| |
| @b = common dso_local local_unnamed_addr global i32 0, align 1 |
| |
| define dso_local i32 @main() local_unnamed_addr !dbg !7 { |
| %1 = alloca i32, align 4 |
| %2 = load i32, ptr @b, align 1, !dbg !13 |
| call void @llvm.dbg.value(metadata i32 %2, metadata !12, metadata !DIExpression()), !dbg !13 |
| store i32 %2, ptr %1, align 4, !dbg !13 |
| ret i32 0, !dbg !13 |
| } |
| |
| define dso_local i32 @fn_optnone() local_unnamed_addr #0 !dbg !27 { |
| %1 = alloca i32, align 4 |
| %2 = load i32, ptr @b, align 1, !dbg !33 |
| call void @llvm.dbg.value(metadata i32 %2, metadata !32, metadata !DIExpression()), !dbg !33 |
| store i32 %2, ptr %1, align 4, !dbg !33 |
| ret i32 0, !dbg !33 |
| } |
| |
| attributes #0 = {optnone noinline} |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !2, nameTableKind: None) |
| !1 = !DIFile(filename: "dead-store-elimination-marks-undef.ll", directory: "/temp/bz45080") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !6 = !{!"clang version 10.0.0"} |
| !7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !{!12} |
| !12 = !DILocalVariable(name: "l_2864", scope: !7, file: !1, line: 4, type: !10) |
| !13 = !DILocation(line: 5, column: 12, scope: !7) |
| !27 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !31) |
| !31 = !{!32} |
| !32 = !DILocalVariable(name: "l_2864", scope: !27, file: !1, line: 4, type: !10) |
| !33 = !DILocation(line: 5, column: 12, scope: !27) |