Add floating-point to and from integer conversion

This patch add altivec support for v4i32 to v4f32 and for v4f32 to
v4i32 vector rounding conversion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165409 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index a3be7ac..eaef9d3 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -373,6 +373,10 @@
     setOperationAction(ISD::LOAD  , MVT::v4i32, Legal);
     setOperationAction(ISD::SELECT, MVT::v4i32, Expand);
     setOperationAction(ISD::STORE , MVT::v4i32, Legal);
+    setOperationAction(ISD::FP_TO_SINT, MVT::v4i32, Legal);
+    setOperationAction(ISD::FP_TO_UINT, MVT::v4i32, Legal);
+    setOperationAction(ISD::SINT_TO_FP, MVT::v4i32, Legal);
+    setOperationAction(ISD::UINT_TO_FP, MVT::v4i32, Legal);
 
     addRegisterClass(MVT::v4f32, &PPC::VRRCRegClass);
     addRegisterClass(MVT::v4i32, &PPC::VRRCRegClass);