llvm-project

Commit Graph

Author	SHA1	Message	Date
David Majnemer	f6e500a0dc	[Reassociate] Don't propogate flags when creating negations Reassociate mutated existing instructions in order to form negations which would create additional reassociate opportunities. This fixes PR23926. llvm-svn: 240593	2015-06-24 21:27:36 +00:00
Chad Rosier	094ac7735b	[Reassociate] Canonicalize negative constants out of expressions. This is a reapplication of r221171, but we only perform the transformation on expressions which include a multiplication. We do not transform rem/div operations as this doesn't appear to be safe in all cases. llvm-svn: 221721	2014-11-11 22:58:35 +00:00
Chad Rosier	b3eb452e83	[Reassociate] Better preserve NSW/NUW flags. Part of PR12985. Phabricator Revision: http://reviews.llvm.org/D6172 llvm-svn: 221555	2014-11-07 22:12:57 +00:00

Author

SHA1

Message

Date

David Majnemer

f6e500a0dc

[Reassociate] Don't propogate flags when creating negations

Reassociate mutated existing instructions in order to form negations
which would create additional reassociate opportunities.

This fixes PR23926.

llvm-svn: 240593

2015-06-24 21:27:36 +00:00

Chad Rosier

094ac7735b

[Reassociate] Canonicalize negative constants out of expressions.

This is a reapplication of r221171, but we only perform the transformation
on expressions which include a multiplication.  We do not transform rem/div
operations as this doesn't appear to be safe in all cases.

llvm-svn: 221721

2014-11-11 22:58:35 +00:00

Chad Rosier

b3eb452e83

[Reassociate] Better preserve NSW/NUW flags.

Part of PR12985.

Phabricator Revision: http://reviews.llvm.org/D6172

llvm-svn: 221555

2014-11-07 22:12:57 +00:00

3 Commits