From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 29 Aug 2006 18:37:37 +0000 (+0000)
Subject: Don't performance load/op/store transformation if op produces a floating point
X-Git-Tag: android-x86-6.0-r1~1003^2~40995
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=780413d4622e3977227c8e11ef27ba53bdee0d94;p=android-x86%2Fexternal-llvm.git

Don't performance load/op/store transformation if op produces a floating point
or vector result. X86 does not have load/mod/store variants of those
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29957 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp
index 9697f259131..6605473f17a 100644
--- a/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -312,7 +312,9 @@ void X86DAGToDAGISel::InstructionSelectPreprocess(SelectionDAG &DAG) {
 
     SDOperand N1 = I->getOperand(1);
     SDOperand N2 = I->getOperand(2);
-    if (!N1.hasOneUse())
+    if (MVT::isFloatingPoint(N1.getValueType()) &&
+        MVT::isVector(N1.getValueType()) &&
+        !N1.hasOneUse())
       continue;
 
     bool RModW = false;