[PATCH] D46581: [DAGCombine] Change store merge candidates check cut off to 1024

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
aemerson added a reviewer: niravd.

Change store merge candidates check cut off to 1024.

The previous value of 8192 resulted in 5x compile time hits in some pathological cases.


Repository:
  rL LLVM

https://reviews.llvm.org/D46581

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp


Index: lib/CodeGen/SelectionDAG/DAGCombiner.cpp
===================================================================
--- lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -13384,7 +13384,7 @@
 
   SmallPtrSet<const SDNode *, 16> Visited;
   SmallVector<const SDNode *, 8> Worklist;
-  unsigned int Max = 8192;
+  unsigned int Max = 1024;
   // Search Ops of store candidates.
   for (unsigned i = 0; i < NumStores; ++i) {
     SDNode *n = StoreNodes[i].MemNode;


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