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| author | Alkis Evlogimenos <alkis@evlogimenos.com> | 2004-09-02 21:23:32 +0000 |
|---|---|---|
| committer | Alkis Evlogimenos <alkis@evlogimenos.com> | 2004-09-02 21:23:32 +0000 |
| commit | 84f5bcb0139789010eb4a4509fddf811def8794e (patch) | |
| tree | 0f2bde19ae2f81f584a36b8416118f11d9de3da8 /lib/Analysis/LoopInfo.cpp | |
| parent | 679ff31e93fb99799e7cefd4dddadf8d1b1cd7d4 (diff) | |
Change the way we choose a free register: instead of picking the first
free allocatable register, we prefer the a free one with the most uses
of inactive intervals. This causes less spills and performes a bit
better compared to gcc:
Program | GCC/LLC (Before)| GCC/LLC (After)
164.gzip/164.gzip | 0.59 | 0.60
175.vpr/175.vpr | 0.57 | 0.58
176.gcc/176.gcc | 0.59 | 0.61
181.mcf/181.mcf | 0.94 | 0.95
186.crafty/186.crafty | 0.62 | 0.62
197.parser/197.parser | 0.89 | 0.88
252.eon/252.eon | 0.61 | 0.66
253.perlbmk/253.perlbmk | 0.79 | 0.84
254.gap/254.gap | 0.81 | 0.81
255.vortex/255.vortex | 0.92 | 0.93
256.bzip2/256.bzip2 | 0.69 | 0.69
300.twolf/300.twolf | 0.91 | 0.90
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16147 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/LoopInfo.cpp')
0 files changed, 0 insertions, 0 deletions