llvm-project

Commit Graph

Author	SHA1	Message	Date
David Goodwin	b9fe5d5d02	Allow target to specify regclass for which antideps will only be broken along the critical path. llvm-svn: 88682	2009-11-13 19:52:48 +00:00
David Goodwin	da83f7d58b	Rename registers to break output dependencies in addition to anti-dependencies. llvm-svn: 87015	2009-11-12 19:08:21 +00:00
David Goodwin	cf89db135e	Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies. llvm-svn: 86628	2009-11-10 00:15:47 +00:00
David Goodwin	bed7cb6c1d	Fix bug in aggressive antidep breaking; liveness was not updated correctly for regions that do not have antidep candidates. llvm-svn: 86172	2009-11-05 21:06:09 +00:00
David Goodwin	542649463b	Replace std::map.at() with std::map[]. llvm-svn: 86102	2009-11-05 01:45:50 +00:00
David Goodwin	7d8878add2	Break anti-dependencies using free registers in a round-robin manner to avoid introducing new anti-dependencies. llvm-svn: 86098	2009-11-05 01:19:35 +00:00
David Goodwin	8501dbbe10	Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed. llvm-svn: 85939	2009-11-03 20:57:50 +00:00
David Goodwin	faa7660fd0	Between scheduling regions, correctly maintain anti-dep breaking state so that we don't incorrectly rename registers that span these regions. llvm-svn: 85537	2009-10-29 23:30:59 +00:00
David Goodwin	9f1b2d4619	Fix a couple of bugs in aggressive anti-dep breaking. llvm-svn: 85522	2009-10-29 19:17:04 +00:00
David Goodwin	e056d1077e	Allow the aggressive anti-dep breaker to process the same region multiple times. This is necessary because new anti-dependencies are exposed when "current" ones are broken. llvm-svn: 85166	2009-10-26 22:31:16 +00:00
David Goodwin	de11f36ab7	Add aggressive anti-dependence breaker. Currently it is not the default for any target. Enable with -break-anti-dependencies=all. llvm-svn: 85145	2009-10-26 19:32:42 +00:00

11 Commits