Skip to content
Commit f237ce15 authored by Craig Topper's avatar Craig Topper
Browse files

[X86] Add custom type legalization for SIGN_EXTEND_VECTOR_INREG from... 

[X86] Add custom type legalization for SIGN_EXTEND_VECTOR_INREG from 16i16/v32i8 to v4i64 when v4i64 needs splitting.

This allows us to sign extend to v4i32 first. And then share that extension to implement the final steps to v4i64 using a pcmpgt and punpckl and punpckh.

We already do something similar for SIGN_EXTEND with -x86-experimental-vector-widening-legalization.

llvm-svn: 350158
parent c7c7574e
Show whitespace changes
Inline Side-by-side
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Please to comment