[X86] Add WriteFMOVMSK/WriteVecMOVMSK/WriteMMXMOVMSK scheduler classes
Currently MOVMSK instructions use the WriteVecLogic class, which is a very poor choice given that MOVMSK involves a SSE->GPR transfer.
Differential Revision: https://reviews.llvm.org/D44924
llvm-svn: 328664
diff --git a/llvm/lib/Target/X86/X86Schedule.td b/llvm/lib/Target/X86/X86Schedule.td
index 85ca7a9..6136d96 100644
--- a/llvm/lib/Target/X86/X86Schedule.td
+++ b/llvm/lib/Target/X86/X86Schedule.td
@@ -105,6 +105,11 @@
// These are often used on both floating point and integer vectors.
defm WriteVecLogic : X86SchedWritePair; // Vector and/or/xor.
+// MOVMSK operations.
+def WriteFMOVMSK : SchedWrite;
+def WriteVecMOVMSK : SchedWrite;
+def WriteMMXMOVMSK : SchedWrite;
+
// Conversion between integer and float.
defm WriteCvtF2I : X86SchedWritePair; // Float -> Integer.
defm WriteCvtI2F : X86SchedWritePair; // Integer -> Float.