diff options
| -rw-r--r-- | lib/Transforms/Vectorize/SLPVectorizer.cpp | 3 | ||||
| -rw-r--r-- | test/Transforms/SLPVectorizer/X86/cse.ll | 30 |
2 files changed, 32 insertions, 1 deletions
diff --git a/lib/Transforms/Vectorize/SLPVectorizer.cpp b/lib/Transforms/Vectorize/SLPVectorizer.cpp index 0eb045e628..cecb18b918 100644 --- a/lib/Transforms/Vectorize/SLPVectorizer.cpp +++ b/lib/Transforms/Vectorize/SLPVectorizer.cpp @@ -1827,7 +1827,8 @@ void BoUpSLP::optimizeGatherSequence() { for (SmallVectorImpl<BasicBlock *>::iterator I = CSEWorkList.begin(), E = CSEWorkList.end(); I != E; ++I) { - assert((I == CSEWorkList.begin() || !DT->dominates(*I, *std::prev(I))) && + assert((I == CSEWorkList.begin() || !DT->isReachableFromEntry(*I) || + !DT->dominates(*I, *std::prev(I))) && "Worklist not sorted properly!"); BasicBlock *BB = *I; // For all instructions in blocks containing gather sequences: diff --git a/test/Transforms/SLPVectorizer/X86/cse.ll b/test/Transforms/SLPVectorizer/X86/cse.ll index bbfd6f28ea..d2ad7eb1a8 100644 --- a/test/Transforms/SLPVectorizer/X86/cse.ll +++ b/test/Transforms/SLPVectorizer/X86/cse.ll @@ -217,3 +217,33 @@ return: ; preds = %entry, %if.end ret i32 0 } +%class.B.53.55 = type { %class.A.52.54, double } +%class.A.52.54 = type { double, double, double } + +@a = external global double, align 8 + +define void @PR19646(%class.B.53.55* %this) { +entry: + br i1 undef, label %if.end13, label %if.end13 + +sw.epilog7: ; No predecessors! + %.in = getelementptr inbounds %class.B.53.55* %this, i64 0, i32 0, i32 1 + %0 = load double* %.in, align 8 + %add = fadd double undef, 0.000000e+00 + %add6 = fadd double %add, %0 + %1 = load double* @a, align 8 + %add8 = fadd double %1, 0.000000e+00 + %_dy = getelementptr inbounds %class.B.53.55* %this, i64 0, i32 0, i32 2 + %2 = load double* %_dy, align 8 + %add10 = fadd double %add8, %2 + br i1 undef, label %if.then12, label %if.end13 + +if.then12: ; preds = %sw.epilog7 + %3 = load double* undef, align 8 + br label %if.end13 + +if.end13: ; preds = %if.then12, %sw.epilog7, %entry + %x.1 = phi double [ 0.000000e+00, %if.then12 ], [ %add6, %sw.epilog7 ], [ undef, %entry ], [ undef, %entry ] + %b.0 = phi double [ %3, %if.then12 ], [ %add10, %sw.epilog7 ], [ undef, %entry], [ undef, %entry ] + unreachable +} |