Custom lower FMA intrinsics to target specific nodes and remove the patterns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162534 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index 3280ce5..8d3797e 100644
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -205,7 +205,7 @@
   bool hasAES() const { return HasAES; }
   bool hasPCLMUL() const { return HasPCLMUL; }
   bool hasFMA() const { return HasFMA; }
-  // FIXME: Favor FMA when both are enabled. Is this right?
+  // FIXME: Favor FMA when both are enabled. Is this the right thing to do?
   bool hasFMA4() const { return HasFMA4 && !HasFMA; }
   bool hasXOP() const { return HasXOP; }
   bool hasMOVBE() const { return HasMOVBE; }