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Commit Graph

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
Silviu Baranga	308a7c7ed4	Fix PR25372 - teach replaceCongruentPHIs to handle cases where SE evaluates a PHI to a SCEVConstant Summary: Since now Scalar Evolution can create non-add rec expressions for PHI nodes, it can also create SCEVConstant expressions. This will confuse replaceCongruentPHIs, which previously relied on the fact that SCEV could not produce constants in this case. We will now replace the node with a constant in these cases - or avoid processing the Phi in case of a type mismatch. Reviewers: sanjoy Subscribers: llvm-commits, majnemer Differential Revision: http://reviews.llvm.org/D14230 llvm-svn: 251938	2015-11-03 16:27:04 +00:00

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

Silviu Baranga

308a7c7ed4

Fix PR25372 - teach replaceCongruentPHIs to handle cases where SE evaluates a PHI to a SCEVConstant

Summary:
Since now Scalar Evolution can create non-add rec expressions for PHI
nodes, it can also create SCEVConstant expressions. This will confuse
replaceCongruentPHIs, which previously relied on the fact that SCEV
could not produce constants in this case.

We will now replace the node with a constant in these cases - or avoid
processing the Phi in case of a type mismatch.

Reviewers: sanjoy

Subscribers: llvm-commits, majnemer

Differential Revision: http://reviews.llvm.org/D14230

llvm-svn: 251938

2015-11-03 16:27:04 +00:00

3 Commits