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3 Commits

Author SHA1 Message Date
Chad Rosier e41edc2e4e [driver] Test that last option wins between -Ofast and -O2. 
Part of rdar://13622687

llvm-svn: 180207
 2013-04-24 18:43:57 +00:00
Chad Rosier 679b07500e [driver] Put -fvectorize under the -Ofast umbrella flag. 
Part of rdar://13622687

llvm-svn: 180206
 2013-04-24 18:29:59 +00:00
Chad Rosier b71f6aa33c [driver] Improve the implementation of the -Ofast option. 
Specifically, allow the flags that fall under this umbrella (i.e., -O3,
-ffast-math, and -fstrict-aliasing) to be overridden/disabled with the
individual -O[0|1|2|s|z]/-fno- flags.

This also fixes the handling of various floating point optimization
flags that are modified by -ffast-math (and thus -Ofast as well).
Part of rdar://13622687

llvm-svn: 180204
 2013-04-24 18:09:54 +00:00