llvm-project

Commit Graph

Author	SHA1	Message	Date
Manman Ren	a2e9a98b06	TBAA: remove !tbaa from testing cases when they are not needed. This will make it easier to turn on struct-path aware TBAA since the metadata format will change. llvm-svn: 188944	2013-08-21 22:20:53 +00:00
Jakob Stoklund Olesen	725d57682b	Fix PR14732 by handling all kinds of IMPLICIT_DEF live ranges. Most IMPLICIT_DEF instructions are removed by the ProcessImplicitDefs pass, and a few are reinserted by PHIElimination when a PHI argument is <undef>. RegisterCoalescer was assuming that all IMPLICIT_DEF live ranges look like those created by PHIElimination, and that their live range never leaves the basic block. The PR14732 test case does tricks with PHI nodes that causes a longer IMPLICIT_DEF live range to appear. This happens very rarely, but RegisterCoalescer should be able to handle it. llvm-svn: 171435	2013-01-03 00:47:51 +00:00

Author

SHA1

Message

Date

Manman Ren

a2e9a98b06

TBAA: remove !tbaa from testing cases when they are not needed.

This will make it easier to turn on struct-path aware TBAA since the metadata
format will change.

llvm-svn: 188944

2013-08-21 22:20:53 +00:00

Jakob Stoklund Olesen

725d57682b

Fix PR14732 by handling all kinds of IMPLICIT_DEF live ranges.

Most IMPLICIT_DEF instructions are removed by the ProcessImplicitDefs
pass, and a few are reinserted by PHIElimination when a PHI argument is
<undef>.

RegisterCoalescer was assuming that all IMPLICIT_DEF live ranges look
like those created by PHIElimination, and that their live range never
leaves the basic block.

The PR14732 test case does tricks with PHI nodes that causes a longer
IMPLICIT_DEF live range to appear. This happens very rarely, but
RegisterCoalescer should be able to handle it.

llvm-svn: 171435

2013-01-03 00:47:51 +00:00

2 Commits