From: Nadav Rotem <nrotem@apple.com>
Date: Tue, 4 Dec 2012 23:25:24 +0000 (+0000)
Subject: LoopVectorizer: Increase the number of pointers that can be tested at runtime. If... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=46c5f79789947b75ff3b0cc107f133fb0c5ffb5e;p=oota-llvm.git

LoopVectorizer: Increase the number of pointers that can be tested at runtime. If we cant prove statically that the pointers are disjoint then we add the runtime check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169334 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp
index 20e073b1b94..166ad33cac4 100644
--- a/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -90,7 +90,7 @@ const unsigned TinyTripCountThreshold = 16;
 
 /// When performing a runtime memory check, do not check more than this
 /// number of pointers. Notice that the check is quadratic!
-const unsigned RuntimeMemoryCheckThreshold = 2;
+const unsigned RuntimeMemoryCheckThreshold = 4;
 
 /// This is the highest vector width that we try to generate.
 const unsigned MaxVectorSize = 8;