From: Evan Cheng <evan.cheng@apple.com>
Date: Mon, 1 Mar 2010 22:00:11 +0000 (+0000)
Subject: Remove the optimize for code size limitation on r67917. Optimize 64-bit imul by const... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=73736df88ba5a35bf172191c2dea5294306fce04;p=oota-llvm.git

Remove the optimize for code size limitation on r67917. Optimize 64-bit imul by constants into leas + shl regardless if optimizing for code size. The size saving from using imulq isn't worth it. Also, the lea and shl instructions may expose further optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97507 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index b0a1bff04c1..8cfc1b28415 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -9233,10 +9233,6 @@ static SDValue PerformANDCombine(SDNode *N, SelectionDAG &DAG,
 /// LEA + SHL, LEA + LEA.
 static SDValue PerformMulCombine(SDNode *N, SelectionDAG &DAG,
                                  TargetLowering::DAGCombinerInfo &DCI) {
-  if (DAG.getMachineFunction().
-      getFunction()->hasFnAttr(Attribute::OptimizeForSize))
-    return SDValue();
-
   if (DCI.isBeforeLegalize() || DCI.isCalledByLegalizer())
     return SDValue();