[cfe-dev] -frounding-math and llvm?

[Jack Howarth]

On Wed, Aug 03, 2011 at 09:10:42AM -0700, Eli Friedman wrote:
> On Wed, Aug 3, 2011 at 8:45 AM, Jack Howarth <howarth at bromo.med.uc.edu> wrote:
> >   What exactly is the situation with support for -frounding-math in llvm-gcc/clang? I ask
> > because we are seeing regressions in the ppl 0.11.2 testsuite when compiling with either llvm-gcc
> > or clang from Xcode 4.1 as well as clang svn. The ppl developers seem to be seeing warnings to
> > the effect...
> >
> > clang: warning: argument unused during compilation: '-frounding-math'
> >
> > in their builds.
> >
> > http://www.cs.unipr.it/pipermail/ppl-devel/2011-August/017559.html
> >
> > Thanks in advance for any clarifications on the status of -frounding-math in the llvm
> > based compilers.
> 
> Not supported, and I don't know of anyone who plans on working on it
> (or FENV_ACCESS) in the near future.

Eli,
   Is this the same situation with llvm-gcc? I don't see the warnings from llvm-gcc
but we do see the same failures in ppl's testsuite. Is this a case of llvm-gcc silently not supporting
-frounding-math?
              Jack

> 
> -Eli