1; RUN: opt < %s -simplifycfg -S | FileCheck %s 2; RUN: opt < %s -strip-debug -simplifycfg -S | FileCheck %s 3 4; Verify that the and.2 instruction is eliminated even in the presence of a 5; preceding debug intrinsic. 6 7; CHECK-LABEL: bb1: 8; CHECK: and i1 false, false 9; CHECK-LABEL: bb2: 10; CHECK-NOT: and i1 false, false 11 12target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 13target triple = "x86_64-unknown-linux-gnu" 14 15; Function Attrs: norecurse nounwind 16define void @foo() local_unnamed_addr #0 !dbg !4 { 17bb1: 18 %and.1 = and i1 false, false 19 %cmp = icmp eq i16 0, 0 20 br i1 %cmp, label %bb2, label %bb3 21 22bb2: ; preds = %bb1 23 call void @llvm.dbg.value(metadata i16 0, metadata !8, metadata !DIExpression()), !dbg !9 24 %and.2 = and i1 false, false 25 br label %bb3 26 27bb3: ; preds = %bb2, %bb1 28 ret void 29} 30 31; Function Attrs: nounwind readnone speculatable 32declare void @llvm.dbg.value(metadata, metadata, metadata) #1 33 34attributes #0 = { norecurse nounwind } 35attributes #1 = { nounwind readnone speculatable } 36 37!llvm.dbg.cu = !{!0} 38!llvm.module.flags = !{!3} 39 40!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "Foo", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2) 41!1 = !DIFile(filename: "foo.c", directory: "/") 42!2 = !{} 43!3 = !{i32 2, !"Debug Info Version", i32 3} 44!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 10, type: !5, isLocal: false, isDefinition: true, scopeLine: 10, isOptimized: false, unit: !0, retainedNodes: !2) 45!5 = !DISubroutineType(types: !6) 46!6 = !{null, !7} 47!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 48!8 = !DILocalVariable(name: "p_1", arg: 1, scope: !4, line: 4, type: !7) 49!9 = distinct !DILocation(line: 11, column: 3, scope: !4) 50