Add instruction selection for ffloor of vectors when SSE4.1 or AVX is enabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163473 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 59d5233..71cae06 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -946,6 +946,9 @@
     setOperationAction(ISD::FRINT,              MVT::f64,   Legal);
     setOperationAction(ISD::FNEARBYINT,         MVT::f64,   Legal);
 
+    setOperationAction(ISD::FFLOOR,             MVT::v4f32, Legal);
+    setOperationAction(ISD::FFLOOR,             MVT::v2f64, Legal);
+
     // FIXME: Do we need to handle scalar-to-vector here?
     setOperationAction(ISD::MUL,                MVT::v4i32, Legal);
 
@@ -1023,6 +1026,7 @@
     setOperationAction(ISD::FMUL,               MVT::v8f32, Legal);
     setOperationAction(ISD::FDIV,               MVT::v8f32, Legal);
     setOperationAction(ISD::FSQRT,              MVT::v8f32, Legal);
+    setOperationAction(ISD::FFLOOR,             MVT::v8f32, Legal);
     setOperationAction(ISD::FNEG,               MVT::v8f32, Custom);
     setOperationAction(ISD::FABS,               MVT::v8f32, Custom);
 
@@ -1031,6 +1035,7 @@
     setOperationAction(ISD::FMUL,               MVT::v4f64, Legal);
     setOperationAction(ISD::FDIV,               MVT::v4f64, Legal);
     setOperationAction(ISD::FSQRT,              MVT::v4f64, Legal);
+    setOperationAction(ISD::FFLOOR,             MVT::v4f64, Legal);
     setOperationAction(ISD::FNEG,               MVT::v4f64, Custom);
     setOperationAction(ISD::FABS,               MVT::v4f64, Custom);