1; RUN: opt -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S < %s | FileCheck %s 2; RUN: opt --try-experimental-debuginfo-iterators -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S < %s | FileCheck %s 3; Verify that we don't crash due an invalid !dbg location on the hoisted llvm.dbg.value 4 5define i64 @caller(ptr %ptr, i64 %flag) !dbg !10 { 6init: 7 %v9 = icmp eq i64 %flag, 0 8 br i1 %v9, label %a, label %b 9 10; CHECK: %vala = load i64, ptr %ptr 11; CHECK-NEXT: #dbg_value(i64 %vala, [[MD:![0-9]*]] 12; CHECK-NEXT: #dbg_value(i64 %vala, [[MD]] 13; CHECK-NEXT: %valbmasked = and i64 %vala, 1 14 15a: ; preds = %init 16 %vala = load i64, ptr %ptr, align 8 17 call void @llvm.dbg.value(metadata i64 %vala, metadata !8, metadata !DIExpression()), !dbg !12 18 br label %test.exit 19 20b: ; preds = %init 21 %valb = load i64, ptr %ptr, align 8 22 call void @llvm.dbg.value(metadata i64 %valb, metadata !8, metadata !DIExpression()), !dbg !13 23 %valbmasked = and i64 %valb, 1 24 br label %test.exit 25 26test.exit: ; preds = %a, %b 27 %retv = phi i64 [ %vala, %a ], [ %valbmasked, %b ] 28 ret i64 %retv 29} 30 31; CHECK: [[MD]] = !DILocalVariable(name: "var" 32 33; Function Attrs: nounwind readnone speculatable 34declare void @llvm.dbg.value(metadata, metadata, metadata) #0 35 36attributes #0 = { nounwind readnone speculatable } 37 38!llvm.module.flags = !{!0} 39!llvm.dbg.cu = !{!1} 40 41!0 = !{i32 2, !"Debug Info Version", i32 3} 42!1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !3) 43!2 = !DIFile(filename: "optbug", directory: "") 44!3 = !{} 45!4 = distinct !DISubprogram(name: "callee", scope: !2, file: !2, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, unit: !1, retainedNodes: !7) 46!5 = !DISubroutineType(types: !6) 47!6 = !{null} 48!7 = !{!8} 49!8 = !DILocalVariable(name: "var", scope: !4, file: !2, type: !9) 50!9 = !DIBasicType(name: "var_t", size: 64, encoding: DW_ATE_unsigned) 51!10 = distinct !DISubprogram(name: "caller", scope: !2, file: !2, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, isOptimized: false, unit: !1, retainedNodes: !3) 52!11 = distinct !DILocation(line: 6, scope: !10) 53!12 = !DILocation(line: 2, scope: !4, inlinedAt: !11) 54!13 = !DILocation(line: 3, scope: !4, inlinedAt: !11) 55