[PATCH] D125164: [X86] Fix some signedness errors in x86 headers

[Phoebe Wang via Phabricator via cfe-commits]

pengfei added a comment.

> These intrinsics are interesting. The descriptions on Intrinsic guide are for immediate variant, but all compilers' implementations are register variant. What's more, the codegen from Clang and GCC don't seem correct according to the description of `vpsrlw  zmm0, zmm0, xmm1`. They should do the same broadcast as ICC. https://godbolt.org/z/dcrqdEs8q

After a second read, I found Clang and GCC's generation are also correct, I confused `vpsrlw  zmm0, zmm0, xmm1` with `vpsrlw  zmm0, zmm0, zmm1`. Please ignore the noise.


Repository:
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  https://reviews.llvm.org/D125164/new/

https://reviews.llvm.org/D125164