llvm-project

Commit Graph

Author	SHA1	Message	Date
David Majnemer	63d606bdcb	[GVN] Intersect the IR flags when CSE'ing two instructions We performed a simple, but incomplete, intersection when it came time to CSE instructions. It didn't handle, for example, the 'exact' flag. This fixes PR23922. llvm-svn: 240595	2015-06-24 21:52:25 +00:00
Dmitri Gribenko	d7beca87f5	Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID This is done to avoid odd test failures, like the one fixed in r171243. My previous regex was not good enough to find these. llvm-svn: 171343	2013-01-01 13:57:25 +00:00
Rafael Espindola	47d988c54c	When gvn decides to replace an instruction with another, we have to patch the replacement to make it at least as generic as the instruction being replaced. This includes: * dropping nsw/nuw flags * getting the least restrictive tbaa and fpmath metadata * merging ranges Fixes PR12979. llvm-svn: 157958	2012-06-04 22:44:21 +00:00

Author

SHA1

Message

Date

David Majnemer

63d606bdcb

[GVN] Intersect the IR flags when CSE'ing two instructions

We performed a simple, but incomplete, intersection when it came time to
CSE instructions.  It didn't handle, for example, the 'exact' flag.

This fixes PR23922.

llvm-svn: 240595

2015-06-24 21:52:25 +00:00

Dmitri Gribenko

d7beca87f5

Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID

This is done to avoid odd test failures, like the one fixed in r171243.

My previous regex was not good enough to find these.

llvm-svn: 171343

2013-01-01 13:57:25 +00:00

Rafael Espindola

47d988c54c

When gvn decides to replace an instruction with another, we have to patch the

replacement to make it at least as generic as the instruction being replaced.
This includes:
* dropping nsw/nuw flags
* getting the least restrictive tbaa and fpmath metadata
* merging ranges

Fixes PR12979.

llvm-svn: 157958

2012-06-04 22:44:21 +00:00

3 Commits