Craig Topper fdf3f1ff82 [X86] Add new scalar fma intrinsics with rounding mode that use f32/f64 types. ...

This allows us to handle masking in a very similar way to the default rounding version that uses llvm.fma.

I had to add new rounding mode CodeGenOnly instructions to support isel when we can't find a movss to grab the upper bits from to use the b_Int instruction.

Fast-isel tests have been updated to match new clang codegen.

We are currently having trouble folding fneg into the new intrinsic. I'm going to correct that in a follow up patch to keep the size of this one down.

A future patch will also remove the old intrinsics.

llvm-svn: 336506

2018-07-08 01:10:43 +00:00

6.5 KiB

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