[all-commits] [llvm/llvm-project] 5c1fe4: [Target] Cache the command line derived feature ma...

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5c1fe4e20f887286baac6989943a0875e12834fe
      https://github.com/llvm/llvm-project/commit/5c1fe4e20f887286baac6989943a0875e12834fe
  Author: Craig Topper <craig.topper at intel.com>
  Date:   2020-08-12 (Wed, 12 Aug 2020)

  Changed paths:
    M clang/include/clang/Basic/TargetOptions.h
    M clang/lib/AST/ASTContext.cpp
    M clang/lib/Basic/Targets.cpp
    M clang/lib/CodeGen/CGOpenMPRuntimeGPU.cpp

  Log Message:
  -----------
  [Target] Cache the command line derived feature map in TargetOptions.

We can use this to remove some calls to initFeatureMap from Sema
and CodeGen when a function doesn't have a target attribute.

This reduces compile time of the linux kernel where this map
is needed to diagnose some inline assembly constraints based
on whether sse, avx, or avx512 is enabled.

Differential Revision: https://reviews.llvm.org/D85807