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| author | Vincent Lejeune <vljn@ovi.com> | 2013-06-07 23:30:34 +0000 |
|---|---|---|
| committer | Vincent Lejeune <vljn@ovi.com> | 2013-06-07 23:30:34 +0000 |
| commit | d1a9d181206c4a614ad36383abf16f5a4ce990cc (patch) | |
| tree | e961a1318a1b7b65e6cf5a44ed506e8c3e177421 /llvm/test/CodeGen/X86/warn-stack.ll | |
| parent | 4d143328dfe507f36cad821a1319919f8debf557 (diff) | |
| download | bcm5719-llvm-d1a9d181206c4a614ad36383abf16f5a4ce990cc.tar.gz bcm5719-llvm-d1a9d181206c4a614ad36383abf16f5a4ce990cc.zip | |
R600: Use a refined heuristic to choose when switching clause
This is using a hint from AMD APP OpenCL Programming Guide with
empirically tweaked parameters.
I used Unigine Heaven 3.0 to determine best parameters on my system
(i7 2600/Radeon 6950/Kernel 3.9.4) the benchmark :
it went from 38.8 average fps to 39.6, which is ~3% gain.
(Lightmark 2008.2 gain is much more marginal: from 537 to 539)
There is no lit test provided as the parameter were determined
empirically and it it would be nearly impossiblet to find a test
program that check for optimal behavior.
llvm-svn: 183593
Diffstat (limited to 'llvm/test/CodeGen/X86/warn-stack.ll')
0 files changed, 0 insertions, 0 deletions
