Andrea Di Biagio 70c7608263 [TTI] Improved cost heuristic for cttz/ctlz calls. ... This patch is a follow-up of r228826 (see code-review: D7506). Now that SimplifyCFG uses TargetTransformInfo for cost analysis, we have to fix the cost heuristic for intrinsic calls to cttz/ctlz. This patch defines method 'getIntrinsicCost' in BasicTTIImpl: now, BasicTTIImpl queries TLI to check if a call to cttz/ctlz is cheap for the target. Added test cases in Transforms/SimplifyCFG/X86 to verify that on x86, SimplifyCFG only speculates a call to cttz/ctlz if it is cheap. Differential Revision: http://reviews.llvm.org/D7554 llvm-svn: 228829		2015-02-11 14:22:18 +00:00
..
lit.local.cfg
speculate-cttz-ctlz.ll	[TTI] Improved cost heuristic for cttz/ctlz calls.	2015-02-11 14:22:18 +00:00
switch_to_lookup_table.ll	SimplifyCFG: Omit range checks for switch lookup tables when default is unreachable	2015-01-26 19:52:34 +00:00
switch-covered-bug.ll	[SimplifyCFG] fix accessing deleted PHINodes in switch-to-table conversion.	2014-08-02 23:41:54 +00:00
switch-table-bug.ll	Try to fix the bots again by moving test to X86 directory.	2014-07-24 17:57:09 +00:00