Commit Graph

5 Commits

Author SHA1 Message Date
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
Alina Sbirlea cae12edaaa Use MemorySSA in LICM to do sinking and hoisting.
Summary:
Step 2 in using MemorySSA in LICM:
Use MemorySSA in LICM to do sinking and hoisting, all under "EnableMSSALoopDependency" flag.
Promotion is disabled.

Enable flag in LICM sink/hoist tests to test correctness of this change. Moved one test which
relied on promotion, in order to test all sinking tests.

Reviewers: sanjoy, davide, gberry, george.burgess.iv

Subscribers: llvm-commits, Prazek

Differential Revision: https://reviews.llvm.org/D40375

llvm-svn: 350879
2019-01-10 19:29:04 +00:00
Stanislav Mekhanoshin d8c9374797 Fix invariant fdiv hoisting in LICM
FDiv is replaced with multiplication by reciprocal and invariant
reciprocal is hoisted out of the loop, while multiplication remains
even if invariant.

Switch checks for all invariant operands and only invariant
denominator to fix the issue.

Differential Revision: https://reviews.llvm.org/D48447

llvm-svn: 335411
2018-06-23 04:01:28 +00:00
Hal Finkel b63ed91549 [LICM] Hoist fp division from the loops and replace by a reciprocal
When allowed, we can hoist a division out of a loop in favor of a
multiplication by the reciprocal. Fixes PR32157.

Patch by vit9696!

Differential Revision: https://reviews.llvm.org/D30819

llvm-svn: 299911
2017-04-11 02:22:54 +00:00