[PATCH] Tune TTI getMaxInterleaveFactor for POWER8

hfinkel at anl.gov hfinkel at anl.gov
Wed Feb 11 23:55:22 PST 2015


I ran benchmarks on the `P7` today, and I'm fine with this change. Setting this value to 12 gives the following speedups:

MultiSource/Applications/JM/ldecod/ldecod
	-49.5771% +/- 23.3244%
MultiSource/Applications/JM/lencod/lencod
	-52.9663% +/- 31.49%
(and some improvement in SingleSource/Benchmarks/Adobe-C++/loop_unroll), and no significant regressions.

Please make the same change for the `P7` and the `P8`, and add a test case in test/Transforms/LoopVectorize/PowerPC.


http://reviews.llvm.org/D7503

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/






More information about the llvm-commits mailing list