Add hasSideEffects=0 to CMP*rr_REV.

llvm-svn: 171130
diff --git a/llvm/lib/Target/X86/X86InstrArithmetic.td b/llvm/lib/Target/X86/X86InstrArithmetic.td
index 6bda628..693815d 100644
--- a/llvm/lib/Target/X86/X86InstrArithmetic.td
+++ b/llvm/lib/Target/X86/X86InstrArithmetic.td
@@ -700,6 +700,7 @@
         mnemonic, "{$src2, $src1|$src1, $src2}", [], IIC_BIN_NONMEM> {
   // The disassembler should know about this, but not the asmparser.
   let isCodeGenOnly = 1;
+  let hasSideEffects = 0;
 }
 
 // BinOpRM - Instructions like "add reg, reg, [mem]".