llvm-mirror/test/Analysis/CostModel
Arnold Schwaighofer 52871434dd X86 cost model: Differentiate cost for vector shifts of constants
SSE2 has efficient support for shifts by a scalar. My previous change of making
shifts expensive did not take this into account marking all shifts as expensive.
This would prevent vectorization from happening where it is actually beneficial.

With this change we differentiate between shifts of constants and other shifts.

radar://13576547

llvm-svn: 178808
2013-04-04 23:26:24 +00:00
..
ARM Improve long vector sext/zext lowering on ARM 2013-03-19 08:15:38 +00:00
PowerPC Refine fix to bug 15041. 2013-02-08 18:19:17 +00:00
X86 X86 cost model: Differentiate cost for vector shifts of constants 2013-04-04 23:26:24 +00:00
lit.local.cfg Add a cost model analysis that allows us to estimate the cost of IR-level instructions. 2012-11-02 21:48:17 +00:00
no_info.ll Make opt grab the triple from the module and use it to initialize the target machine. 2013-01-01 08:00:32 +00:00