1 ; RUN: opt -mem2reg -S < %s | FileCheck %s 2 3 ; ModuleID = 'newvars.c' 4 source_filename = "newvars.c" 5 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 6 target triple = "x86_64-pc-windows-msvc19.0.24215" 7 8 ; Function Attrs: nounwind uwtable 9 define i32 @if_else(i32 %cond, i32 %a, i32 %b) !dbg !8 { 10 entry: 11 %x = alloca i32, align 4 12 call void @llvm.dbg.addr(metadata i32* %x, metadata !16, metadata !DIExpression()), !dbg !26 13 store i32 %a, i32* %x, align 4, !dbg !26, !tbaa !17 14 %tobool = icmp ne i32 %cond, 0, !dbg !28 15 br i1 %tobool, label %if.then, label %if.else, !dbg !30 16 17 if.then: ; preds = %entry 18 store i32 0, i32* %x, align 4, !dbg !31, !tbaa !17 19 br label %if.end, !dbg !33 20 21 if.else: ; preds = %entry 22 store i32 %b, i32* %x, align 4, !dbg !36, !tbaa !17 23 br label %if.end 24 25 if.end: ; preds = %if.else, %if.then 26 %rv = load i32, i32* %x, align 4, !dbg !37, !tbaa !17 27 ret i32 %rv, !dbg !39 28 } 29 30 ; CHECK-LABEL: define i32 @if_else({{.*}}) 31 ; CHECK: entry: 32 ; CHECK-NOT: alloca i32 33 ; CHECK: call void @llvm.dbg.value(metadata i32 %a, metadata ![[X_LOCAL:[0-9]+]], metadata !DIExpression()) 34 ; CHECK: if.then: ; preds = %entry 35 ; CHECK: call void @llvm.dbg.value(metadata i32 0, metadata ![[X_LOCAL]], metadata !DIExpression()) 36 ; CHECK: if.else: ; preds = %entry 37 ; CHECK: call void @llvm.dbg.value(metadata i32 %b, metadata ![[X_LOCAL]], metadata !DIExpression()) 38 ; CHECK: if.end: ; preds = %if.else, %if.then 39 ; CHECK: %[[PHI:[^ ]*]] = phi i32 [ 0, %if.then ], [ %b, %if.else ] 40 ; CHECK: call void @llvm.dbg.value(metadata i32 %[[PHI]], metadata ![[X_LOCAL]], metadata !DIExpression()) 41 ; CHECK: ret i32 42 43 ; CHECK: ![[X_LOCAL]] = !DILocalVariable(name: "x", {{.*}}) 44 45 ; Function Attrs: nounwind readnone speculatable 46 declare void @llvm.dbg.declare(metadata, metadata, metadata) 47 declare void @llvm.dbg.addr(metadata, metadata, metadata) 48 49 !llvm.dbg.cu = !{!0} 50 !llvm.module.flags = !{!3, !4, !5, !6} 51 !llvm.ident = !{!7} 52 53 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 54 !1 = !DIFile(filename: "newvars.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild") 55 !2 = !{} 56 !3 = !{i32 2, !"Dwarf Version", i32 4} 57 !4 = !{i32 2, !"Debug Info Version", i32 3} 58 !5 = !{i32 1, !"wchar_size", i32 2} 59 !6 = !{i32 7, !"PIC Level", i32 2} 60 !7 = !{!"clang version 6.0.0 "} 61 !8 = distinct !DISubprogram(name: "if_else", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12) 62 !9 = !DISubroutineType(types: !10) 63 !10 = !{!11, !11, !11, !11} 64 !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 65 !12 = !{!13, !14, !15, !16} 66 !13 = !DILocalVariable(name: "b", arg: 3, scope: !8, file: !1, line: 1, type: !11) 67 !14 = !DILocalVariable(name: "a", arg: 2, scope: !8, file: !1, line: 1, type: !11) 68 !15 = !DILocalVariable(name: "cond", arg: 1, scope: !8, file: !1, line: 1, type: !11) 69 !16 = !DILocalVariable(name: "x", scope: !8, file: !1, line: 2, type: !11) 70 !17 = !{!18, !18, i64 0} 71 !18 = !{!"int", !19, i64 0} 72 !19 = !{!"omnipotent char", !20, i64 0} 73 !20 = !{!"Simple C/C++ TBAA"} 74 !22 = !DILocation(line: 1, column: 34, scope: !8) 75 !23 = !DILocation(line: 1, column: 27, scope: !8) 76 !24 = !DILocation(line: 1, column: 17, scope: !8) 77 !25 = !DILocation(line: 2, column: 3, scope: !8) 78 !26 = !DILocation(line: 2, column: 7, scope: !8) 79 !27 = !DILocation(line: 2, column: 11, scope: !8) 80 !28 = !DILocation(line: 3, column: 7, scope: !29) 81 !29 = distinct !DILexicalBlock(scope: !8, file: !1, line: 3, column: 7) 82 !30 = !DILocation(line: 3, column: 7, scope: !8) 83 !31 = !DILocation(line: 4, column: 7, scope: !32) 84 !32 = distinct !DILexicalBlock(scope: !29, file: !1, line: 3, column: 13) 85 !33 = !DILocation(line: 5, column: 3, scope: !32) 86 !34 = !DILocation(line: 6, column: 9, scope: !35) 87 !35 = distinct !DILexicalBlock(scope: !29, file: !1, line: 5, column: 10) 88 !36 = !DILocation(line: 6, column: 7, scope: !35) 89 !37 = !DILocation(line: 8, column: 10, scope: !8) 90 !38 = !DILocation(line: 9, column: 1, scope: !8) 91 !39 = !DILocation(line: 8, column: 3, scope: !8) 92
