forked from OSchip/llvm-project
f1ac0fcf56
Summary: With small integer optimization (short: sio) enabled, ISL uses 32 bit integers for its arithmetic and only falls back to a big integer library (in the case of Polly: IMath) if an operation's result is too large. This gives a massive performance boost for most application using ISL. For instance, experiments with ppcg (polyhedral source-to-source compiler) show speed-ups of 5.8 (compared to plain IMath), respectively 2.7 (compared to GMP). In Polly, a smaller fraction of the total compile time is taken by ISL, but the speed-ups are still very significant. The buildbots measure compilation speed-up up to 1.8 (oourafft, floyd-warshall, symm). All Polybench benchmarks compile in at least 9% less time, and about 20% less on average. Detailed Polybench compile time results (median of 10): correlation -25.51% covariance -24.82% 2mm -26.64% 3mm -28.69% atax -13.70% bicg -10.78% cholesky -40.67% doitgen -11.60% gemm -11.54% gemver -10.63% gesummv -11.54% mvt -9.43% symm -41.25% syr2k -14.71% syrk -14.52% trisolv -17.65% trmm -9.78% durbin -19.32% dynprog -9.09% gramschmidt -15.38% lu -21.77% floyd-warshall -42.71% reg_detect -41.17% adi -36.69% fdtd-2d -32.61% fdtd-apml -21.90% jacobi-1d-imper -9.41% jacobi-2d-imper -27.65% seidel-2d -31.00% Reviewers: grosser Reviewed By: grosser Subscribers: Meinersbur, llvm-commits, pollydev Projects: #polly Differential Revision: http://reviews.llvm.org/D10506 llvm-svn: 240689 |
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| .. | ||
| m4 | ||
| AutoRegen.sh | ||
| LICENSE.TXT | ||
| aclocal.m4 | ||
| config.guess | ||
| config.sub | ||
| configure.ac | ||
| configure.bak | ||