Hal Finkel 8def8d9263 Fix BasicTTI::getCmpSelInstrCost to deal with illegal vector types ... The default implementation of getCmpSelInstrCost, which provides the cost of icmp/fcmp/select instructions, did not deal sensibly with illegal vector types that were scalarized. We'd ask for the legalization cost of the vector type, which would return something like (4, f64) given an input of <4 x double>, and we'd then check the TLI status of the ISD opcode on that scalar type. This would result in querying (ISD::VSELECT, f64), for example. Amusingly enough, ISD::VSELECT on scalar types is marked as Legal by default (as with most other operations), and most backends never change this because VSELECT is never generated on scalars. However, seeing the resulting operation as Legal, we'd neglect to add the scalarization cost before returning. The result is that we'd grossly under-estimate the cost of cmps/selects on illegal vector types. Now, if type legalization clearly results in scalarization, we skip the early return and add the scalarization cost. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217859 91177308-0d34-0410-b5e6-96231b3b80d8		2014-09-16 04:35:50 +00:00
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cmp-expanded.ll	Fix BasicTTI::getCmpSelInstrCost to deal with illegal vector types	2014-09-16 04:35:50 +00:00
ext.ll	[PowerPC] Adjust load/store costs in PPCTTI	2014-04-04 23:51:18 +00:00
insert_extract.ll	[PowerPC] Adjust load/store costs in PPCTTI	2014-04-04 23:51:18 +00:00
lit.local.cfg	Reduce verbiage of lit.local.cfg files	2014-06-09 22:42:55 +00:00
load_store.ll	Don't assert in BasicTTI::getMemoryOpCost for non-simple types	2014-04-14 05:59:09 +00:00