[PATCH] D46135: [Driver, CodeGen] add options to enable/disable an FP cast optimization

[Sanjay Patel via Phabricator via cfe-commits]

spatel updated this revision to Diff 144200.
spatel added a comment.

Patch updated:

1. Improve the documentation language - more suggestions welcome!
2. Change the default setting so the work-around is 'off' (ie, by default assume source is compliant and optimize accordingly).
3. Remove the 'no' version of the flag. Given the change in the default, this seems more natural to me, and it simplifies the patch/tests...but I might have been too pessimistic before and this is too optimistic? Let me know...


https://reviews.llvm.org/D46135

Files:
  docs/UsersManual.rst
  include/clang/Driver/Options.td
  include/clang/Frontend/CodeGenOptions.def
  lib/CodeGen/CGCall.cpp
  lib/Driver/ToolChains/Clang.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/CodeGen/no-junk-ftrunc.c
  test/Driver/fast-math.c

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