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[DAG] Move legal type checks in store merge to be checked only

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on non-legal cases. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303994 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nirav Dave 2017-05-26 14:37:27 +00:00
parent bafb2e66d8
commit f6ed90efa1
1 changed files with 4 additions and 2 deletions
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6
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -12623,7 +12623,8 @@ bool DAGCombiner::MergeConsecutiveStores(StoreSDNode *St) {
IsFast) {
LastLegalType = i + 1;
// Or check whether a truncstore is legal.
} else if (TLI.getTypeAction(Context, StoreTy) ==
} else if (!LegalTypes &&
TLI.getTypeAction(Context, StoreTy) ==
TargetLowering::TypePromoteInteger) {
EVT LegalizedStoredValueTy =
TLI.getTypeToTransformTo(Context, StoredVal.getValueType());
@ -12838,7 +12839,8 @@ bool DAGCombiner::MergeConsecutiveStores(StoreSDNode *St) {
else if (TLI.getTypeAction(Context, StoreTy) ==
TargetLowering::TypePromoteInteger) {
EVT LegalizedStoredValueTy = TLI.getTypeToTransformTo(Context, StoreTy);
if (TLI.isTruncStoreLegal(LegalizedStoredValueTy, StoreTy) &&
if (!LegalTypes &&
TLI.isTruncStoreLegal(LegalizedStoredValueTy, StoreTy) &&
TLI.canMergeStoresTo(FirstStoreAS, LegalizedStoredValueTy) &&
TLI.isLoadExtLegal(ISD::ZEXTLOAD, LegalizedStoredValueTy,
StoreTy) &&