On 09/12/2013 10:35 PM, Tobias Grosser wrote:
Hi,
I would like to submit the following patch for review:
[PATCH] Use CodeGenOptions to derive LLVM-IR fast math flags
The clang driver goes a long way to properly detangle the interactions
of the different fast math driver flags (test/Driver/fast-math.c). The
subsequent call to clang -cc1 then uses the CodeGenOption flags to set
the valid optimizations and it uses the LangOptions to enable the
relevant fast math macros.
When deriving the LLVM-IR fast math flags we use the CodeGenOptions,
instead of the previously used LangOptions. This ensures that
optimizations for the following command line are disabled, while the
fast math macro is still set:
clang -ffast-math -fno-finite-math-only -fno-unsafe-math-optimizations
file.c
Ping.
Tobias
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