78 lines · plain
1; RUN: opt -passes=loop-distribute -enable-loop-distribute -S < %s | FileCheck %s2 3; Check that removeUnusedInsts() salvages `dbg_value`s which use dead4; instructions in the distributed loops.5 6define void @f(ptr noalias %a, ptr noalias %c, ptr noalias %d) !dbg !5 {7; CHECK-LABEL: define void @f(8; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[C:%.*]], ptr noalias [[D:%.*]])9 10entry:11 br label %for.body, !dbg !2112 13for.body: ; preds = %for.body, %entry14 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ], !dbg !2215 %add = add nuw nsw i64 %ind, 1, !dbg !2316 17; CHECK-LABEL: for.body.ldist1:18; CHECK: #dbg_value(!DIArgList(ptr [[D]], i64 [[IND_LDIST1:%.*]]), [[META16:![0-9]+]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_constu, 4, DW_OP_mul, DW_OP_plus, DW_OP_stack_value), [[META28:![0-9]+]])19;20 %arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind, !dbg !2421 #dbg_value(ptr %arrayidxA, !12, !DIExpression(), !24)22 %loadA = load i32, ptr %arrayidxA, align 4, !dbg !2523 %arrayidxA_plus_4 = getelementptr inbounds i32, ptr %a, i64 %add, !dbg !2624 store i32 %loadA, ptr %arrayidxA_plus_4, align 4, !dbg !2725 26; CHECK-LABEL: for.body:27; CHECK: #dbg_value(!DIArgList(ptr [[A]], i64 [[IND:%.*]]), [[META12:![0-9]+]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_constu, 4, DW_OP_mul, DW_OP_plus, DW_OP_stack_value), [[DBG24:![0-9]+]])28;29 %arrayidxD = getelementptr inbounds i32, ptr %d, i64 %ind, !dbg !2830 #dbg_value(ptr %arrayidxD, !16, !DIExpression(), !28)31 %loadD = load i32, ptr %arrayidxD, align 4, !dbg !2932 %arrayidxC = getelementptr inbounds i32, ptr %c, i64 %ind, !dbg !3033 store i32 %loadD, ptr %arrayidxC, align 4, !dbg !3134 35 %exitcond = icmp eq i64 %add, 20, !dbg !3236 br i1 %exitcond, label %for.end, label %for.body, !dbg !3337 38for.end: ; preds = %for.body39 ret void, !dbg !3440}41 42!llvm.dbg.cu = !{!0}43!llvm.debugify = !{!2, !3}44!llvm.module.flags = !{!4}45 46!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)47!1 = !DIFile(filename: "temp.ll", directory: "/")48!2 = !{i32 14}49!3 = !{i32 9}50!4 = !{i32 2, !"Debug Info Version", i32 3}51!5 = distinct !DISubprogram(name: "f", linkageName: "f", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)52!6 = !DISubroutineType(types: !7)53!7 = !{}54!8 = !{!12, !16}55!10 = !DIBasicType(name: "ty64", size: 64, encoding: DW_ATE_unsigned)56!12 = !DILocalVariable(name: "3", scope: !5, file: !1, line: 4, type: !10)57!16 = !DILocalVariable(name: "6", scope: !5, file: !1, line: 8, type: !10)58!21 = !DILocation(line: 1, column: 1, scope: !5)59!22 = !DILocation(line: 2, column: 1, scope: !5)60!23 = !DILocation(line: 3, column: 1, scope: !5)61!24 = !DILocation(line: 4, column: 1, scope: !5)62!25 = !DILocation(line: 5, column: 1, scope: !5)63!26 = !DILocation(line: 6, column: 1, scope: !5)64!27 = !DILocation(line: 7, column: 1, scope: !5)65!28 = !DILocation(line: 8, column: 1, scope: !5)66!29 = !DILocation(line: 9, column: 1, scope: !5)67!30 = !DILocation(line: 10, column: 1, scope: !5)68!31 = !DILocation(line: 11, column: 1, scope: !5)69!32 = !DILocation(line: 12, column: 1, scope: !5)70!33 = !DILocation(line: 13, column: 1, scope: !5)71!34 = !DILocation(line: 14, column: 1, scope: !5)72;.73; CHECK: [[META12]] = !DILocalVariable(name: "3"74; CHECK: [[META16]] = !DILocalVariable(name: "6"75; CHECK: [[DBG24]] = !DILocation(line: 4, column: 176; CHECK: [[META28]] = !DILocation(line: 8, column: 177;.78