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de484dcc25
This reverts commit 95805bc425b264805a472232a75ed2ffe58aceda. I've squashed the test fix into this commit. [DebugInfo] Update loop metadata for inlined loops Currently, when a loop is cloned while inlining function (A) into function (B) the loop metadata is copied and then not modified at all. The loop metadata can encode the loop's start and end DILocations. Therefore, the new inlined loop in function (B) may have loop metadata which shows start and end locations residing in function (A). This patch ensures loop metadata is updated while inlining so that the start and end DILocations are given the "inlinedAt" operand. I've also added a regression test for this. This fix is required for D60831 because that patch uses loop metadata to determine the DILocation for the branches of new loop preheaders. Reviewers: aprantl, dblaikie, anemet Reviewed By: aprantl Subscribers: eraman, hiraditya, llvm-commits Tags: #debug-info, #llvm Differential Revision: https://reviews.llvm.org/D61933 llvm-svn: 361149
160 lines
7.9 KiB
LLVM
Executable File
160 lines
7.9 KiB
LLVM
Executable File
; This test checks that the !llvm.loop metadata has been updated after inlining
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; so that the start and end locations refer to the inlined DILocations.
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; RUN: opt -inline -always-inline %s -S 2>&1 | FileCheck %s
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; CHECK: br i1 %{{.*}}, label %middle.block.i, label %vector.body.i, !dbg !{{[0-9]+}}, !llvm.loop [[VECTOR:![0-9]+]]
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; CHECK: br i1 %{{.*}}, label %for.cond.cleanup.loopexit.i, label %for.body.i, !dbg !{{[0-9]+}}, !llvm.loop [[SCALAR:![0-9]+]]
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; CHECK-DAG: [[VECTOR]] = distinct !{[[VECTOR]], [[START:![0-9]+]], [[END:![0-9]+]], [[IS_VECTORIZED:![0-9]+]]}
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; CHECK-DAG: [[SCALAR]] = distinct !{[[SCALAR]], [[START]], [[END]], [[NO_UNROLL:![0-9]+]], [[IS_VECTORIZED]]}
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; CHECK-DAG: [[IS_VECTORIZED]] = !{!"llvm.loop.isvectorized", i32 1}
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; CHECK-DAG: [[NO_UNROLL]] = !{!"llvm.loop.unroll.runtime.disable"}
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; This IR can be generated by running:
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; clang -emit-llvm -S -gmlt -O2 inlined.cpp -o - -mllvm -opt-bisect-limit=53 |\
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; opt -loop-vectorize
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;
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; Where inlined.cpp contains:
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; extern int *Array;
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; static int bar(unsigned x)
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; {
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; int Ret = 0;
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; for (unsigned i = 0; i < x; ++i)
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; {
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; Ret += Array[i] * i;
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; }
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; return Ret;
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; }
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;
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; int foo(unsigned x)
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; {
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; int Bar = bar(x);
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; return Bar;
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; }
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@"?Array@@3PEAHEA" = external dso_local local_unnamed_addr global i32*, align 8
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define dso_local i32 @"?foo@@YAHI@Z"(i32 %x) local_unnamed_addr !dbg !8 {
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entry:
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%call = call fastcc i32 @"?bar@@YAHI@Z"(i32 %x), !dbg !10
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ret i32 %call, !dbg !11
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}
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define internal fastcc i32 @"?bar@@YAHI@Z"(i32 %x) unnamed_addr !dbg !12 {
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entry:
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%cmp7 = icmp eq i32 %x, 0, !dbg !13
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br i1 %cmp7, label %for.cond.cleanup, label %for.body.lr.ph, !dbg !13
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for.body.lr.ph: ; preds = %entry
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%0 = load i32*, i32** @"?Array@@3PEAHEA", align 8, !dbg !14, !tbaa !15
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%wide.trip.count = zext i32 %x to i64, !dbg !14
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%min.iters.check = icmp ult i64 %wide.trip.count, 8, !dbg !13
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br i1 %min.iters.check, label %scalar.ph, label %vector.ph, !dbg !13
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vector.ph: ; preds = %for.body.lr.ph
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%n.mod.vf = urem i64 %wide.trip.count, 8, !dbg !13
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%n.vec = sub i64 %wide.trip.count, %n.mod.vf, !dbg !13
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br label %vector.body, !dbg !13
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vector.body: ; preds = %vector.body, %vector.ph
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%index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ], !dbg !13
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%vec.ind = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, %vector.ph ], [ %vec.ind.next, %vector.body ]
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%vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %17, %vector.body ]
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%vec.phi2 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %18, %vector.body ]
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%vec.ind4 = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %vector.ph ], [ %vec.ind.next7, %vector.body ], !dbg !19
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%step.add = add <4 x i64> %vec.ind, <i64 4, i64 4, i64 4, i64 4>
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%1 = add i64 %index, 0, !dbg !13
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%2 = add i64 %index, 1, !dbg !13
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%3 = add i64 %index, 2, !dbg !13
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%4 = add i64 %index, 3, !dbg !13
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%5 = add i64 %index, 4, !dbg !13
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%6 = add i64 %index, 5, !dbg !13
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%7 = add i64 %index, 6, !dbg !13
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%8 = add i64 %index, 7, !dbg !13
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%9 = getelementptr inbounds i32, i32* %0, i64 %1, !dbg !19
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%10 = getelementptr inbounds i32, i32* %0, i64 %5, !dbg !19
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%11 = getelementptr inbounds i32, i32* %9, i32 0, !dbg !19
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%12 = bitcast i32* %11 to <4 x i32>*, !dbg !19
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%wide.load = load <4 x i32>, <4 x i32>* %12, align 4, !dbg !19, !tbaa !20
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%13 = getelementptr inbounds i32, i32* %9, i32 4, !dbg !19
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%14 = bitcast i32* %13 to <4 x i32>*, !dbg !19
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%wide.load3 = load <4 x i32>, <4 x i32>* %14, align 4, !dbg !19, !tbaa !20
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%step.add5 = add <4 x i32> %vec.ind4, <i32 4, i32 4, i32 4, i32 4>, !dbg !19
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%15 = mul <4 x i32> %wide.load, %vec.ind4, !dbg !19
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%16 = mul <4 x i32> %wide.load3, %step.add5, !dbg !19
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%17 = add <4 x i32> %15, %vec.phi, !dbg !19
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%18 = add <4 x i32> %16, %vec.phi2, !dbg !19
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%index.next = add i64 %index, 8, !dbg !13
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%vec.ind.next = add <4 x i64> %step.add, <i64 4, i64 4, i64 4, i64 4>
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%vec.ind.next7 = add <4 x i32> %step.add5, <i32 4, i32 4, i32 4, i32 4>, !dbg !19
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%19 = icmp eq i64 %index.next, %n.vec, !dbg !13
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br i1 %19, label %middle.block, label %vector.body, !dbg !13, !llvm.loop !22
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middle.block: ; preds = %vector.body
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%bin.rdx = add <4 x i32> %18, %17, !dbg !19
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%rdx.shuf = shufflevector <4 x i32> %bin.rdx, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>, !dbg !19
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%bin.rdx8 = add <4 x i32> %bin.rdx, %rdx.shuf, !dbg !19
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%rdx.shuf9 = shufflevector <4 x i32> %bin.rdx8, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>, !dbg !19
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%bin.rdx10 = add <4 x i32> %bin.rdx8, %rdx.shuf9, !dbg !19
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%20 = extractelement <4 x i32> %bin.rdx10, i32 0, !dbg !19
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%cmp.n = icmp eq i64 %wide.trip.count, %n.vec, !dbg !13
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br i1 %cmp.n, label %for.cond.cleanup.loopexit, label %scalar.ph, !dbg !13
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scalar.ph: ; preds = %middle.block, %for.body.lr.ph
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%bc.resume.val = phi i64 [ %n.vec, %middle.block ], [ 0, %for.body.lr.ph ]
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%bc.merge.rdx = phi i32 [ 0, %for.body.lr.ph ], [ %20, %middle.block ]
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br label %for.body, !dbg !13
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for.cond.cleanup.loopexit: ; preds = %middle.block, %for.body
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%add.lcssa = phi i32 [ %add, %for.body ], [ %20, %middle.block ], !dbg !19
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br label %for.cond.cleanup, !dbg !25
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for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
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%Ret.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %for.cond.cleanup.loopexit ], !dbg !14
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ret i32 %Ret.0.lcssa, !dbg !25
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for.body: ; preds = %for.body, %scalar.ph
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%indvars.iv = phi i64 [ %bc.resume.val, %scalar.ph ], [ %indvars.iv.next, %for.body ]
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%Ret.08 = phi i32 [ %bc.merge.rdx, %scalar.ph ], [ %add, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %0, i64 %indvars.iv, !dbg !19
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%21 = load i32, i32* %arrayidx, align 4, !dbg !19, !tbaa !20
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%22 = trunc i64 %indvars.iv to i32, !dbg !19
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%mul = mul i32 %21, %22, !dbg !19
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%add = add i32 %mul, %Ret.08, !dbg !19
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !13
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%exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count, !dbg !13
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br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body, !dbg !13, !llvm.loop !26
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project.git b1e28d9b6a16380ccf1456fe0695f639364407a9)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "inlined.cpp", directory: "")
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!2 = !{}
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!3 = !{i32 2, !"CodeView", i32 1}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 2}
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!6 = !{i32 7, !"PIC Level", i32 2}
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!7 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git b1e28d9b6a16380ccf1456fe0695f639364407a9)"}
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!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 13, type: !9, scopeLine: 14, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!9 = !DISubroutineType(types: !2)
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!10 = !DILocation(line: 15, scope: !8)
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!11 = !DILocation(line: 16, scope: !8)
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!12 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 3, type: !9, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!13 = !DILocation(line: 6, scope: !12)
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!14 = !DILocation(line: 0, scope: !12)
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!15 = !{!16, !16, i64 0}
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!16 = !{!"any pointer", !17, i64 0}
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!17 = !{!"omnipotent char", !18, i64 0}
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!18 = !{!"Simple C++ TBAA"}
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!19 = !DILocation(line: 8, scope: !12)
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!20 = !{!21, !21, i64 0}
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!21 = !{!"int", !17, i64 0}
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!22 = distinct !{!22, !13, !23, !24}
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!23 = !DILocation(line: 9, scope: !12)
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!24 = !{!"llvm.loop.isvectorized", i32 1}
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!25 = !DILocation(line: 10, scope: !12)
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!26 = distinct !{!26, !13, !23, !27, !24}
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!27 = !{!"llvm.loop.unroll.runtime.disable"}
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