[PATCH] D42276: [Driver] Add an -fexperimental-isel driver option to enable/disable GlobalISel

[Amara Emerson via Phabricator via cfe-commits]

aemerson updated this revision to Diff 131191.
aemerson added a comment.

I've added two kinds of warnings, one for targets which have incomplete GISel support, and another for unsupported optimisation levels (for ARM64 -O{1,2,3,s,z}).


Repository:
  rC Clang

https://reviews.llvm.org/D42276

Files:
  include/clang/Basic/DiagnosticDriverKinds.td
  include/clang/Basic/DiagnosticGroups.td
  include/clang/Driver/Options.td
  lib/Driver/ToolChains/Clang.cpp
  test/Driver/global-isel.c

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