[PATCH] D40230: Add -mprefer-vector-width driver option and attribute during CodeGen.

[Craig Topper via Phabricator via cfe-commits]

craig.topper updated this revision to Diff 123614.
craig.topper added a comment.

Address comments.

The value of 'none' is intended to cancel out any other option specified. I've changed it so that we no longer pass 'none' to llvm and instead suppress the attribute.


https://reviews.llvm.org/D40230

Files:
  docs/ClangCommandLineReference.rst
  include/clang/Driver/Options.td
  include/clang/Frontend/CodeGenOptions.h
  lib/CodeGen/CGCall.cpp
  lib/Driver/ToolChains/Clang.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/CodeGen/attr-mprefer-vector-width.c
  test/Driver/mprefer-vector-width.c

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