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-rw-r--r--llvm/lib/Transforms/Utils/LoopUnrollAndJam.cpp15
1 files changed, 1 insertions, 14 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopUnrollAndJam.cpp b/llvm/lib/Transforms/Utils/LoopUnrollAndJam.cpp
index 07b5f20d4e6..cc80e11e4ac 100644
--- a/llvm/lib/Transforms/Utils/LoopUnrollAndJam.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUnrollAndJam.cpp
@@ -754,20 +754,7 @@ bool llvm::isSafeToUnrollAndJam(Loop *L, ScalarEvolution &SE, DominatorTree &DT,
// Check inner loop backedge count is consistent on all iterations of the
// outer loop
- auto CheckInnerLoopIterationCountInvariant = [](Loop *SubLoop, Loop *OuterL,
- ScalarEvolution &SE) {
- BasicBlock *SubLoopLatch = SubLoop->getLoopLatch();
- const SCEV *SubLoopBECountSC = SE.getExitCount(SubLoop, SubLoopLatch);
- if (isa<SCEVCouldNotCompute>(SubLoopBECountSC) ||
- !SubLoopBECountSC->getType()->isIntegerTy())
- return false;
- ScalarEvolution::LoopDisposition LD =
- SE.getLoopDisposition(SubLoopBECountSC, OuterL);
- if (LD != ScalarEvolution::LoopInvariant)
- return false;
- return true;
- };
- if (!CheckInnerLoopIterationCountInvariant(SubLoop, L, SE)) {
+ if (!hasInvariantIterationCount(SubLoop, SE)) {
LLVM_DEBUG(dbgs() << "Won't unroll-and-jam; Inner loop iteration count is "
"not consistent on each iteration\n");
return false;
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