[all-commits] [llvm/llvm-project] ecbaf1: [X86] Custom widen 128/256-bit vXi32 fp_to_uint on...

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ecbaf152f8fe2b5b8ebc633541e15158984f4db4
      https://github.com/llvm/llvm-project/commit/ecbaf152f8fe2b5b8ebc633541e15158984f4db4
  Author: Craig Topper <craig.topper at gmail.com>
  Date:   2019-12-26 (Thu, 26 Dec 2019)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/lib/Target/X86/X86InstrAVX512.td
    M llvm/lib/Target/X86/X86TargetTransformInfo.cpp
    M llvm/test/CodeGen/X86/vec-strict-fptoint-128.ll
    M llvm/test/CodeGen/X86/vec-strict-fptoint-256.ll

  Log Message:
  -----------
  [X86] Custom widen 128/256-bit vXi32 fp_to_uint on avx512f targets without avx512vl. Similar for vXi64 on avx512dq without avx512vl.

Summary:
Previously we did this with isel patterns that used garbage in
the widened part of the source. But that's not valid for strictfp.
So now we custom widen and use zeroes for the widened elemens for
strictfp.

This replaces D71864.

Reviewers: RKSimon, spatel, andrew.w.kaylor, pengfei, LiuChen3

Reviewed By: pengfei

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D71879