Displaying 2 results from an estimated 2 matches for "r219550".
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r219557
2014 Oct 16
4
[LLVMdev] Performance regression on ARM
Folks,
First win of the benchmark buildbot!
http://llvm.org/perf/db_default/v4/nts/graph?plot.0=49.128.2&highlight_run=31861
It seems mandel-2 had a huge regression a few commits ago, and based
on a quick look, it may have to do with the inst combine changes. I
haven't investigated yet, but this is the first time I spot
regressions on test-suite, so I'd like to first congratulate
2014 Oct 17
5
[LLVMdev] Performance regression on ARM
> 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 registers.
I'm working on fix.