[x86] Adding support for some missing intrinsics: _castf32_u32, _castf64_u64, _castu32_f32, _castu64_f64
Summary:
Adding support for some missing intrinsics:
_castf32_u32, _castf64_u64, _castu32_f32, _castu64_f64
Reviewers: craig.topper, LuoYuanke, RKSimon, pengfei
Reviewed By: RKSimon
Subscribers: llvm-commits
Patch by yubing (Bing Yu)
Differential Revision: https://reviews.llvm.org/D67212
llvm-svn: 372802