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5 Commits

Author SHA1 Message Date
Nikita Popov
864bb84a42 [IndVarSimplify] Convert tests to opaque pointers (NFC) 
This leaves lftr.ll alone, because there is a suspicious test diff.
 2022-12-13 14:50:13 +01:00
Roman Lebedev
6017d9a628
[NFC] Port all IndVarSimplify tests to -passes= syntax 2022-12-07 22:22:09 +03:00
Eric Christopher
cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher
a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
Wei Mi
e2538b5639 Enable exitValue rewrite only when the cost of expansion is low. 
The patch evaluates the expansion cost of exitValue in indVarSimplify pass, and only does the rewriting when the expansion cost is low or loop can be deleted with the rewriting. It provides an option "-replexitval=" to control the default aggressiveness of the exitvalue rewriting. It also fixes some missing cases in SCEVExpander::isHighCostExpansionHelper to enhance the evaluation of SCEV expansion cost.

Differential Revision: http://reviews.llvm.org/D9800

llvm-svn: 238507
 2015-05-28 21:49:07 +00:00