| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -reassociate -S -o - | FileCheck %s |
| |
| ; After reassociation m1 and m2 aren't calculated as m1=c*a and m2=c*b any longer. |
| ; So let's verify that the dbg.value nodes for m1 and m3 are invalidated. |
| |
| source_filename = "reassociate_dbgvalue_discard.c" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define dso_local i32 @test1(i32 %a, i32 %b, i32 %c, i32 %d) local_unnamed_addr #0 !dbg !7 { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 undef, metadata !16, metadata !DIExpression()), !dbg !20 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 undef, metadata !17, metadata !DIExpression()), !dbg !21 |
| ; CHECK-NEXT: [[M1:%.*]] = mul i32 [[D:%.*]], [[C:%.*]], !dbg !22 |
| ; CHECK-NEXT: [[M3:%.*]] = mul i32 [[M1]], [[A:%.*]], !dbg !23 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[M3]], metadata !18, metadata !DIExpression()), !dbg !24 |
| ; CHECK-NEXT: [[M2:%.*]] = mul i32 [[D]], [[C]], !dbg !25 |
| ; CHECK-NEXT: [[M4:%.*]] = mul i32 [[M2]], [[B:%.*]], !dbg !26 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[M4]], metadata !19, metadata !DIExpression()), !dbg !27 |
| ; CHECK-NEXT: [[RES:%.*]] = xor i32 [[M3]], [[M4]] |
| ; CHECK-NEXT: ret i32 [[RES]], !dbg !28 |
| ; |
| entry: |
| %m1 = mul i32 %c, %a, !dbg !24 |
| call void @llvm.dbg.value(metadata i32 %m1, metadata !16, metadata !DIExpression()), !dbg !25 |
| %m2 = mul i32 %c, %b, !dbg !26 |
| call void @llvm.dbg.value(metadata i32 %m2, metadata !17, metadata !DIExpression()), !dbg !27 |
| %m3 = mul i32 %m1, %d, !dbg !28 |
| call void @llvm.dbg.value(metadata i32 %m3, metadata !18, metadata !DIExpression()), !dbg !29 |
| %m4 = mul i32 %m2, %d, !dbg !30 |
| call void @llvm.dbg.value(metadata i32 %m4, metadata !19, metadata !DIExpression()), !dbg !31 |
| %res = xor i32 %m3, %m4 |
| ret i32 %res, !dbg !32 |
| } |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind readnone 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 7.0.0 (trunk 330596) (llvm/trunk 330594)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "reassociate_dbgvalue_discard.c", directory: "") |
| !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 7.0.0 (trunk 330596) (llvm/trunk 330594)"} |
| !7 = distinct !DISubprogram(name: "test1", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !10, !10, !10, !10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !{!12, !13, !14, !15, !16, !17, !18, !19} |
| !12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 3, type: !10) |
| !13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 3, type: !10) |
| !14 = !DILocalVariable(name: "c", arg: 3, scope: !7, file: !1, line: 3, type: !10) |
| !15 = !DILocalVariable(name: "d", arg: 4, scope: !7, file: !1, line: 3, type: !10) |
| !16 = !DILocalVariable(name: "t1", scope: !7, file: !1, line: 4, type: !10) |
| !17 = !DILocalVariable(name: "t2", scope: !7, file: !1, line: 5, type: !10) |
| !18 = !DILocalVariable(name: "t3", scope: !7, file: !1, line: 6, type: !10) |
| !19 = !DILocalVariable(name: "t4", scope: !7, file: !1, line: 7, type: !10) |
| !20 = !DILocation(line: 3, column: 15, scope: !7) |
| !21 = !DILocation(line: 3, column: 22, scope: !7) |
| !22 = !DILocation(line: 3, column: 29, scope: !7) |
| !23 = !DILocation(line: 3, column: 36, scope: !7) |
| !24 = !DILocation(line: 4, column: 14, scope: !7) |
| !25 = !DILocation(line: 4, column: 7, scope: !7) |
| !26 = !DILocation(line: 5, column: 14, scope: !7) |
| !27 = !DILocation(line: 5, column: 7, scope: !7) |
| !28 = !DILocation(line: 6, column: 15, scope: !7) |
| !29 = !DILocation(line: 6, column: 7, scope: !7) |
| !30 = !DILocation(line: 7, column: 15, scope: !7) |
| !31 = !DILocation(line: 7, column: 7, scope: !7) |
| !32 = !DILocation(line: 8, column: 3, scope: !7) |