Commit Graph

4 Commits

Author SHA1 Message Date
Duncan Sands 1d35e9aebe Ignore loads from and stores to local memory (i.e. allocas)
when deciding whether to mark a function readnone/readonly.
Since the pass is currently run before SROA, this may be
quite helpful.  Requested by Chris on IRC.

llvm-svn: 57050
2008-10-04 13:24:24 +00:00
Duncan Sands 5a896a9858 Add test for improvement of readonly to readnone,
and non-demotion of readnone to readonly.

llvm-svn: 56344
2008-09-19 09:20:05 +00:00
Duncan Sands 310dbffdc0 Turn on these tests!
llvm-svn: 56343
2008-09-19 09:16:32 +00:00
Duncan Sands af25ee7ffc Add a new pass AddReadAttrs which works out which functions
can get the readnone/readonly attributes, and gives them it.
The plan is to remove markmodref (which did the same thing
by querying GlobalsModRef) and delete the analogous
functionality from GlobalsModRef.

llvm-svn: 56341
2008-09-19 08:17:05 +00:00