Roman Lebedev dd0170ab24 [SimplifyCFG] mergeConditionalStoreToAddress(): consider cost, not instruction count ... Summary: As it can be see in the changed test, while `div` is really costly, we were speculating it. This does not seem correct. Also, the old code would run for every single insturuction in BB, instead of eagerly bailing out as soon as there are too many instructions. This function still has a problem that `PHINodeFoldingThreshold` is per-basic-block, while it should be for all the basic blocks. Reviewers: efriedma, craig.topper, dmgreen, jmolloy Reviewed By: jmolloy Subscribers: xbolva00, hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D67315 llvm-svn: 372255		2019-09-18 19:46:57 +00:00
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disable-lookup-table.ll	[SimplifyCFG] NFC, update Switch tests as a baseline.	2019-06-13 19:36:38 +00:00
lit.local.cfg	[lit] Delete empty lines at the end of lit.local.cfg NFC	2019-06-17 09:51:07 +00:00
merge-cond-stores-cost.ll	[SimplifyCFG] mergeConditionalStoreToAddress(): consider cost, not instruction count	2019-09-18 19:46:57 +00:00
speculate-cttz-ctlz.ll	[SimplifyCFG] FoldTwoEntryPHINode(): consider *total* speculation cost, not per-BB cost	2019-09-16 16:18:24 +00:00
switch-covered-bug.ll	[SimplifyCFG] NFC, update Switch tests as a baseline.	2019-06-13 19:36:38 +00:00
switch-table-bug.ll	[SimplifyCFG] NFC, update Switch tests as a baseline.	2019-06-13 19:36:38 +00:00
switch_to_lookup_table.ll	[SimplifyCFG] FoldTwoEntryPHINode(): consider *total* speculation cost, not per-BB cost	2019-09-16 16:18:24 +00:00