1 ; RUN: llc -mtriple=x86_64-- %s -o - -O0 -stop-before=finalize-isel \
2 ; RUN: -experimental-debug-variable-locations \
3 ; RUN: | FileCheck %s --check-prefix=O0 --implicit-check-not=DBG_INSTR_REF
4 ; RUN: llc -mtriple=x86_64-- %s -o - -O2 -stop-before=finalize-isel \
5 ; RUN: -experimental-debug-variable-locations \
6 ; RUN: | FileCheck %s --check-prefix=O2 --implicit-check-not=DBG_VALUE
7 ; RUN: llc -mtriple=x86_64-- %s -o - -stop-before=finalize-isel \
8 ; RUN: -fast-isel -experimental-debug-variable-locations \
9 ; RUN: | FileCheck %s --check-prefix=FASTISEL --implicit-check-not=DBG_VALUE
11 ; Test that instruction-referencing variable locations are issued at -O2, but
12 ; normal DBG_VALUEs are issued at -O0. This behaviour is desired as the former
13 ; is slow when applied to unoptimized code.
14 ; (Copy + pasted from ./dead-store-elimination-marks-undef.ll),
16 ; O0-LABEL: name: main
18 ; O0-LABEL: name: fn_optnone
21 ; O2-LABEL: name: main
23 ; O2-LABEL: name: fn_optnone
26 ; FASTISEL-LABEL: name: main
27 ; FASTISEL: DBG_INSTR_REF
28 ; FASTISEL-LABEL: name: fn_optnone
31 @b = common dso_local local_unnamed_addr global i32 0, align 1
33 define dso_local i32 @main() local_unnamed_addr !dbg !7 {
34 %1 = alloca i32, align 4
35 %2 = load i32, ptr @b, align 1, !dbg !13
36 call void @llvm.dbg.value(metadata i32 %2, metadata !12, metadata !DIExpression()), !dbg !13
37 store i32 %2, ptr %1, align 4, !dbg !13
41 define dso_local i32 @fn_optnone() local_unnamed_addr #0 !dbg !27 {
42 %1 = alloca i32, align 4
43 %2 = load i32, ptr @b, align 1, !dbg !33
44 call void @llvm.dbg.value(metadata i32 %2, metadata !32, metadata !DIExpression()), !dbg !33
45 store i32 %2, ptr %1, align 4, !dbg !33
49 attributes #0 = {optnone noinline}
51 declare void @llvm.dbg.value(metadata, metadata, metadata)
54 !llvm.module.flags = !{!3, !4}
57 !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)
58 !1 = !DIFile(filename: "dead-store-elimination-marks-undef.ll", directory: "/temp/bz45080")
60 !3 = !{i32 2, !"Dwarf Version", i32 4}
61 !4 = !{i32 2, !"Debug Info Version", i32 3}
62 !6 = !{!"clang version 10.0.0"}
63 !7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
64 !8 = !DISubroutineType(types: !9)
66 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
68 !12 = !DILocalVariable(name: "l_2864", scope: !7, file: !1, line: 4, type: !10)
69 !13 = !DILocation(line: 5, column: 12, scope: !7)
70 !27 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !31)
72 !32 = !DILocalVariable(name: "l_2864", scope: !27, file: !1, line: 4, type: !10)
73 !33 = !DILocation(line: 5, column: 12, scope: !27)