[PATCH] D55890: [X86][SSE] Auto upgrade PADDS/PSUBS intrinsics to SADD_SAT/SSUB_SAT generic intrinsics (clang)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: craig.topper, spatel, nikic, tkrupa.
Herald added a subscriber: llvm-commits.

This emits SADD_SAT/SSUB_SAT generic intrinsics for the SSE saturated math intrinsics.

I'm still working on the llvm sibling patch (auto upgrade etc.) as there's a number of things that need unravelling. If people are interested in getting this committed quicker I could include minimal llvm side commit changes (GCCBuiltin and fast-isel tests) in the meantime.


Repository:
  rL LLVM

https://reviews.llvm.org/D55890

Files:
  lib/CodeGen/CGBuiltin.cpp
  test/CodeGen/avx2-builtins.c
  test/CodeGen/avx512bw-builtins.c
  test/CodeGen/avx512vlbw-builtins.c
  test/CodeGen/sse2-builtins.c

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