| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 | FileCheck %s |
| |
| ; This test case was generated from speculate-dbgvalue.c: |
| ; |
| ; int test1(int getdirt, int dirt) { |
| ; int result = 100; |
| ; if (getdirt != 0) |
| ; result = dirt; |
| ; return result; |
| ; } |
| ; |
| ; using |
| ; clang speculate-dbgvalue.c -S -emit-llvm -g -O3 -mllvm -disable-llvm-optzns -o - | opt -passes=mem2reg -S |
| |
| |
| ; Function Attrs: nounwind uwtable |
| define i32 @test1(i32 %getdirt, i32 %dirt) #0 !dbg !7 { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[GETDIRT:%.*]], metadata !12, metadata !DIExpression()), !dbg !15 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[DIRT:%.*]], metadata !13, metadata !DIExpression()), !dbg !16 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 100, metadata !14, metadata !DIExpression()), !dbg !17 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[GETDIRT]], 0, !dbg !18 |
| ; *** We used to get an incorrect "call void @llvm.dbg.value(metadata i32 [[DIRT]], metadata !14, metadata !DIExpression()), !dbg !17" here, before the select. *** |
| ; CHECK-NOT: call void @llvm.dbg.value(metadata i32 [[DIRT]], metadata !14 |
| ; CHECK-NEXT: [[RESULT:%.*]] = select i1 [[CMP]], i32 [[DIRT]], i32 100, !dbg !20 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[RESULT]], metadata !14, metadata !DIExpression()), !dbg !17 |
| ; CHECK-NEXT: ret i32 [[RESULT]], !dbg !21 |
| ; CHECK: !12 = !DILocalVariable(name: "getdirt" |
| ; CHECK: !13 = !DILocalVariable(name: "dirt" |
| ; CHECK: !14 = !DILocalVariable(name: "result" |
| ; |
| entry: |
| call void @llvm.dbg.value(metadata i32 %getdirt, metadata !12, metadata !DIExpression()), !dbg !15 |
| call void @llvm.dbg.value(metadata i32 %dirt, metadata !13, metadata !DIExpression()), !dbg !16 |
| call void @llvm.dbg.value(metadata i32 100, metadata !14, metadata !DIExpression()), !dbg !17 |
| %cmp = icmp ne i32 %getdirt, 0, !dbg !18 |
| br i1 %cmp, label %if.then, label %if.end, !dbg !20 |
| |
| if.then: ; preds = %entry |
| call void @llvm.dbg.value(metadata i32 %dirt, metadata !14, metadata !DIExpression()), !dbg !17 |
| br label %if.end, !dbg !21 |
| |
| if.end: ; preds = %if.then, %entry |
| %result.0 = phi i32 [ %dirt, %if.then ], [ 100, %entry ] |
| call void @llvm.dbg.value(metadata i32 %result.0, metadata !14, metadata !DIExpression()), !dbg !17 |
| ret i32 %result.0, !dbg !22 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind uwtable } |
| attributes #1 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "speculate-dbgvalue.c", directory: "/foo") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 6.0.0"} |
| !7 = distinct !DISubprogram(name: "test1", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !10, !10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !{!12, !13, !14} |
| !12 = !DILocalVariable(name: "getdirt", arg: 1, scope: !7, file: !1, line: 1, type: !10) |
| !13 = !DILocalVariable(name: "dirt", arg: 2, scope: !7, file: !1, line: 1, type: !10) |
| !14 = !DILocalVariable(name: "result", scope: !7, file: !1, line: 2, type: !10) |
| !15 = !DILocation(line: 1, column: 15, scope: !7) |
| !16 = !DILocation(line: 1, column: 28, scope: !7) |
| !17 = !DILocation(line: 2, column: 7, scope: !7) |
| !18 = !DILocation(line: 3, column: 15, scope: !19) |
| !19 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 7) |
| !20 = !DILocation(line: 3, column: 7, scope: !7) |
| !21 = !DILocation(line: 4, column: 5, scope: !19) |
| !22 = !DILocation(line: 5, column: 3, scope: !7) |