Hi, I've just pushed a merge of the current upstream patches for resolving the CoreMark regressions. (https://code.launchpad.net/~cltang/gcc-linaro/coremark-part1)
To give a quick benchmark of the current status, testing Linaro 4.5 before/after the merge of those two patches:
Optimization options used were just plain '-O2 -mtune=cortex-a9', tested on one of our Pandaboards running Maverick; all numbers are Iterations/Sec averaged from 3 runs.
r99492 r9942+patches improve % -march=armv5te 2786.87 2848.12 2.20 % -march=armv7-a 2474.50 2775.92 12.18 % -march=armv7-a -mthumb 2297.86 2356.59 2.56 %
I'll have to re-test to be sure, but the numbers/improvements obtained using upstream trunk should not be too far off, at least the ARM mode ones.
As we discussed in prior meetings, there's still one point of regression identified that's in solving, which hopefully will finally bring the ARMv7-A numbers above ARMv5TE.
Chung-Lin
That's good work. Thanks Chung-Lin. Test cases and all!
-- Michael
On Fri, Apr 15, 2011 at 3:28 AM, Chung-Lin Tang cltang@codesourcery.com wrote:
Hi, I've just pushed a merge of the current upstream patches for resolving the CoreMark regressions. (https://code.launchpad.net/~cltang/gcc-linaro/coremark-part1)
To give a quick benchmark of the current status, testing Linaro 4.5 before/after the merge of those two patches:
Optimization options used were just plain '-O2 -mtune=cortex-a9', tested on one of our Pandaboards running Maverick; all numbers are Iterations/Sec averaged from 3 runs.
r99492 r9942+patches improve % -march=armv5te 2786.87 2848.12 2.20 % -march=armv7-a 2474.50 2775.92 12.18 % -march=armv7-a -mthumb 2297.86 2356.59 2.56 %
I'll have to re-test to be sure, but the numbers/improvements obtained using upstream trunk should not be too far off, at least the ARM mode ones.
As we discussed in prior meetings, there's still one point of regression identified that's in solving, which hopefully will finally bring the ARMv7-A numbers above ARMv5TE.
Chung-Lin
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Michael Hope