[PATCH] D45202: [X86] Replacing X86-specific floor and ceil vector intrinsics with generic LLVM intrinsics

[Mikhail Dvoretckii via Phabricator via cfe-commits]

mike.dvoretsky created this revision.
mike.dvoretsky added reviewers: craig.topper, spatel, RKSimon.
Herald added a subscriber: cfe-commits.

Currently, X86 floor and ceil intrinsics for vectors are implemented as target-specific intrinsics that use the generic rounding instruction of the corresponding vector processing feature (ROUND* or VRNDSCALE*). This patch replaces those specific cases with calls to target-independent @llvm.floor.* and @llvm.ceil.* intrinsics. This doesn't affect the resulting machine code, as those intrinsics are lowered to the same instructions, but exposes these specific rounding cases to generic optimizations.


Repository:
  rC Clang

https://reviews.llvm.org/D45202

Files:
  include/clang/Basic/BuiltinsX86.def
  lib/CodeGen/CGBuiltin.cpp
  lib/Headers/avx512fintrin.h
  lib/Headers/avxintrin.h
  lib/Headers/smmintrin.h
  test/CodeGen/avx-builtins.c
  test/CodeGen/avx512f-builtins.c
  test/CodeGen/sse41-builtins.c

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