commit ea81edf351c110c97407bde489a43c48b8cc3a9c
author Sanjay Patel <spatel@rotateright.com> Thu Jul 09 22:48:54 2015 +0000
committer Sanjay Patel <spatel@rotateright.com> Thu Jul 09 22:48:54 2015 +0000
tree 0f2c1f3988f74b88d8f7ac4e592daef90bc42c54
parent 549820b66aa30c74216c5d8b884193e3b9a8cbd0

[x86] enable machine combiner reassociations for scalar double-precision adds

llvm-svn: 241871

llvm/lib/Target/X86/X86InstrInfo.cpp

diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp
index 5484ae9..fdfdac9 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.cpp
+++ b/llvm/lib/Target/X86/X86InstrInfo.cpp
@@ -6408,7 +6408,9 @@
 //       2. Other math / logic operations (and, or)
 static bool isAssociativeAndCommutative(unsigned Opcode) {
   switch (Opcode) {
+  case X86::ADDSDrr:
   case X86::ADDSSrr:
+  case X86::VADDSDrr:
   case X86::VADDSSrr:
   case X86::MULSSrr:
   case X86::VMULSSrr: