Commit Graph

9 Commits

Author SHA1 Message Date
Chandler Carruth 5da53436d5 Convert the uses of '|&' to use '2>&1 |' instead, which works on old
versions of Bash. In addition, I can back out the change to the lit
built-in shell test runner to support this.

This should fix the majority of fallout on Darwin, but I suspect there
will be a few straggling issues.

llvm-svn: 159544
2012-07-02 18:37:59 +00:00
Chris Lattner 4f23f2be15 teach SCEV that the scale and addition of an inbounds gep don't NSW.
This fixes a FIXME in scev-aa.ll (allowing a new no-alias result) and
generally makes things more precise.

llvm-svn: 125449
2011-02-13 03:14:49 +00:00
Dan Gohman c0cca7fdda Revert the part of r107257 which introduced new logic for using
nsw and nuw flags from IR Instructions. On further consideration,
this isn't valid.

llvm-svn: 107298
2010-06-30 17:27:11 +00:00
Dan Gohman 725ed0364b Add a testcase for scev-aa's new capability.
llvm-svn: 107258
2010-06-30 07:17:47 +00:00
Dan Gohman 03f90ab0a9 Add a comment about A[i+(j+1)].
llvm-svn: 90185
2009-12-01 01:38:10 +00:00
Chris Lattner ba0014a44c update status of this. basicaa is much improved now,
only missing the one form (in this testcase).  Dan, do you
consider this example to be important?

llvm-svn: 89953
2009-11-26 16:42:00 +00:00
Dan Gohman 1880092722 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.

llvm-svn: 81537
2009-09-11 18:01:28 +00:00
Dan Gohman 9737a63ed8 Change these tests to feed the assembly files to opt directly, instead
of using llvm-as, now that opt supports this.

llvm-svn: 81226
2009-09-08 16:50:01 +00:00
Dan Gohman d926b985df Create a ScalarEvolution-based AliasAnalysis implementation.
This is a simple AliasAnalysis implementation which works by making
ScalarEvolution queries. ScalarEvolution has a more complete understanding
of arithmetic than BasicAA's collection of ad-hoc checks, so it handles
some cases that BasicAA misses, for example p[i] and p[i+1] within the
same iteration of a loop.

This is currently experimental. It may be that the main use for this pass
will be to help find cases where BasicAA can be profitably extended, or
to help in the development of the overall AliasAnalysis infrastructure,
however it's also possible that it could grow up to become a directly
useful pass.

llvm-svn: 80098
2009-08-26 14:53:06 +00:00