Optimization for SIGN_EXTEND operation on AVX.
Special handling was added for v4i32 -> v4i64 and v8i16 -> v8i32
extensions.

llvm-svn: 149600
diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h
index 1a38921..9689bcd 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.h
+++ b/llvm/lib/Target/X86/X86ISelLowering.h
@@ -219,6 +219,9 @@
       // VZEXT_MOVL - Vector move low and zero extend.
       VZEXT_MOVL,
 
+      // VZEXT_MOVL - Vector move low and sign extend.
+      VSEXT_MOVL,
+
       // VSHL, VSRL - 128-bit vector logical left / right shift
       VSHLDQ, VSRLDQ,