From: Akira Hatanaka <ahatanaka@mips.com>
Date: Fri, 11 Nov 2011 04:18:21 +0000 (+0000)
Subject: Do not try to detect DAG combine patterns for integer multiply-add/sub if value
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e184fec550ea249d00e058cfba34ec6913951895;p=oota-llvm.git

Do not try to detect DAG combine patterns for integer multiply-add/sub if value
type is not i32. MIPS does not have 64-bit integer multiply-add/sub
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144373 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index d916edd73ae..2b0e90b894e 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -395,7 +395,8 @@ static SDValue PerformADDECombine(SDNode *N, SelectionDAG& DAG,
   if (DCI.isBeforeLegalize())
     return SDValue();
 
-  if (Subtarget->hasMips32() && SelectMadd(N, &DAG))
+  if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
+      SelectMadd(N, &DAG))
     return SDValue(N, 0);
 
   return SDValue();
@@ -407,7 +408,8 @@ static SDValue PerformSUBECombine(SDNode *N, SelectionDAG& DAG,
   if (DCI.isBeforeLegalize())
     return SDValue();
 
-  if (Subtarget->hasMips32() && SelectMsub(N, &DAG))
+  if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
+      SelectMsub(N, &DAG))
     return SDValue(N, 0);
 
   return SDValue();