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-rw-r--r--llvm/lib/Analysis/LoopAccessAnalysis.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/LoopAccessAnalysis.cpp b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
index 04c28bc3d76..2e8b6f44490 100644
--- a/llvm/lib/Analysis/LoopAccessAnalysis.cpp
+++ b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
@@ -21,6 +21,7 @@
#include "llvm/IR/IRBuilder.h"
#include "llvm/Support/Debug.h"
#include "llvm/Transforms/Utils/VectorUtils.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
using namespace llvm;
#define DEBUG_TYPE "loop-accesses"
@@ -962,6 +963,12 @@ void LoopAccessInfo::analyzeLoop(const ValueToValueMap &Strides) {
if (Call && getIntrinsicIDForCall(Call, TLI))
continue;
+ // If the function has an explicit vectorized counterpart, we can safely
+ // assume that it can be vectorized.
+ if (Call && !Call->isNoBuiltin() && Call->getCalledFunction() &&
+ TLI->isFunctionVectorizable(Call->getCalledFunction()->getName()))
+ continue;
+
LoadInst *Ld = dyn_cast<LoadInst>(it);
if (!Ld || (!Ld->isSimple() && !IsAnnotatedParallel)) {
emitAnalysis(LoopAccessReport(Ld)
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