[llvm] ad7b930 - Initialize IsFast* values

[Brian Cain via llvm-commits]

Author: Brian Cain
Date: 2020-03-13T17:46:32-05:00
New Revision: ad7b930bd18a434cfc4114fdb4075652dd6b1660

URL: https://github.com/llvm/llvm-project/commit/ad7b930bd18a434cfc4114fdb4075652dd6b1660
DIFF: https://github.com/llvm/llvm-project/commit/ad7b930bd18a434cfc4114fdb4075652dd6b1660.diff

LOG: Initialize IsFast* values

We must initialize these values in case some targets do not assign to
them in allowsMemoryAccess().

Added: 
    

Modified: 
    llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index b77594eb4a80..36fc540fe316 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -16148,7 +16148,7 @@ bool DAGCombiner::MergeConsecutiveStores(StoreSDNode *St) {
           unsigned Elts = (i + 1) * NumMemElts;
           EVT Ty =
               EVT::getVectorVT(*DAG.getContext(), MemVT.getScalarType(), Elts);
-          bool IsFast;
+          bool IsFast = false;
 
           // Break early when size is too large to be legal.
           if (Ty.getSizeInBits() > MaximumLegalStoreInBits)
@@ -16284,7 +16284,8 @@ bool DAGCombiner::MergeConsecutiveStores(StoreSDNode *St) {
         if (StoreTy.getSizeInBits() > MaximumLegalStoreInBits)
           break;
 
-        bool IsFastSt, IsFastLd;
+        bool IsFastSt = false;
+        bool IsFastLd = false;
         if (TLI.isTypeLegal(StoreTy) &&
             TLI.canMergeStoresTo(FirstStoreAS, StoreTy, DAG) &&
             TLI.allowsMemoryAccess(Context, DL, StoreTy,