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 12 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 13 target triple = "x86_64-unknown-linux-gnu" 14 15 ; Function Attrs: norecurse nounwind 16 define void @foo() local_unnamed_addr #0 !dbg !4 { 17 bb1: 18 %and.1 = and i1 false, false 19 %cmp = icmp eq i16 0, 0 20 br i1 %cmp, label %bb2, label %bb3 21 22 bb2: ; 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 27 bb3: ; preds = %bb2, %bb1 28 ret void 29 } 30 31 ; Function Attrs: nounwind readnone speculatable 32 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 33 34 attributes #0 = { norecurse nounwind } 35 attributes #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
