llvm-project

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
Michael Zolotukhin	d3b8bdef01	[JumpThreading] Don't try to rewrite a use if it's already valid. Summary: When recording uses we need to rewrite after cloning a loop we need to check if the use is not dominated by the original def. The initial assumption was that the cloned basic block will introduce a new path and thus the original def will only dominate the use if they are in the same BB, but as the reproducer from PR37745 shows it's not always the case. This fixes PR37745. Reviewers: haicheng, Ka-Ka Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D48111 llvm-svn: 335675	2018-06-26 22:19:48 +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

Michael Zolotukhin

d3b8bdef01

[JumpThreading] Don't try to rewrite a use if it's already valid.

Summary:
When recording uses we need to rewrite after cloning a loop we need to
check if the use is not dominated by the original def. The initial
assumption was that the cloned basic block will introduce a new path and
thus the original def will only dominate the use if they are in the same
BB, but as the reproducer from PR37745 shows it's not always the case.

This fixes PR37745.

Reviewers: haicheng, Ka-Ka

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D48111

llvm-svn: 335675

2018-06-26 22:19:48 +00:00

3 Commits