[CGP] Enable extending scope of optimizeMemoryInst

This patch enables the folding of address computation in
memory instruction in case adress is represented by Phi node.

The inputs of Phi node might be different in base register.

Differential Revision: https://reviews.llvm.org/D36073

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317665 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CodeGenPrepare.cpp b/lib/CodeGen/CodeGenPrepare.cpp
index d6633a508f5d5bbc428f0f10ef3f69bc9cc490db..635036a3f92179ca95a3e0f814d76eb91a6332f8 100644 (file)
--- a/lib/CodeGen/CodeGenPrepare.cpp
+++ b/lib/CodeGen/CodeGenPrepare.cpp
@@ -190,7 +190,7 @@ EnableTypePromotionMerge("cgp-type-promotion-merge", cl::Hidden,
     " the other."), cl::init(true));
 
 static cl::opt<bool> DisableComplexAddrModes(
-    "disable-complex-addr-modes", cl::Hidden, cl::init(true),
+    "disable-complex-addr-modes", cl::Hidden, cl::init(false),
     cl::desc("Disables combining addressing modes with different parts "
              "in optimizeMemoryInst."));