search for: r219557

> Chandler’s complex arithmetic changes are also in the range: r219557 in clang. We saw it change the code in mandel-2 significantly. mandel-2 is broken on hard FP ABI systems, btw. The reason is simply: we're emitting a call to __muldc3 with AAPCS VFP calling convention, however, the function expects softfp (AAPCS) calling conv and reads garbage from GP register...

On 16 October 2014 09:34, Hal Finkel <hfinkel at anl.gov> wrote: > Interesting. Looks like the problem is in (219545, 219569]. Yes. > and given the magnitude of the change, I think that the trip-count changes are more likely. Good point. > Of course, all of these things are bug fixes :( -- So how do we follow-up on this? Correctness before performance. Always. I'll create

...ler Carruth написал: > > On Fri, Oct 17, 2014 at 7:51 AM, Anton Korobeynikov < > anton at korobeynikov.info > <javascript:_e(%7B%7D,'cvml','anton at korobeynikov.info');>> wrote: > >> > Chandler’s complex arithmetic changes are also in the range: r219557 >> in clang. We saw it change the code in mandel-2 significantly. >> mandel-2 is broken on hard FP ABI systems, btw. The reason is simply: >> we're emitting a call to __muldc3 with AAPCS VFP calling convention, >> however, the function expects softfp (AAPCS) calling con...

On Sun, Oct 19, 2014 at 6:11 AM, Joerg Sonnenberger <joerg at britannica.bec.de > wrote: > On Fri, Oct 17, 2014 at 06:51:38PM +0400, Anton Korobeynikov wrote: > > > Chandler’s complex arithmetic changes are also in the range: r219557 > in clang. We saw it change the code in mandel-2 significantly. > > mandel-2 is broken on hard FP ABI systems, btw. The reason is simply: > > we're emitting a call to __muldc3 with AAPCS VFP calling convention, > > however, the function expects softfp (AAPCS) calling conv...