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Author SHA1 Message Date
Sanjoy Das 1ac93a5d89 [IRCE] Re-commit tests cases. 
Re-commit the test cases added in r232444.  These now use
-irce-print-changed-loops and -irce-print-range-checks so they run
correctly on a without asserts build of llvm.

llvm-svn: 232452
 2015-03-17 01:40:24 +00:00
Sanjoy Das 95d041215a [IRCE] Delete two tests. 
I accidentally checked in two tests that used -debug-only -- these fail
on a release LLVM build.  Temporarily delete these from the repo to keep
the bots green while I fix this locally.

llvm-svn: 232446
 2015-03-17 00:54:50 +00:00
Sanjoy Das e2cde6f195 [IRCE] Support half-range checks. 
This change to IRCE gets it to recognize "half" range checks.  Half
range checks are range checks that only either check if the index is
`slt` some positive integer ("length") or if the index is `sge` `0`.

The range solver does not try to be clever / aggressive about solving
half-range checks -- it transforms "I < L" to "0 <= I < L" and "0 <= I"
to "0 <= I < INT_SMAX".  This is safe, but not always optimal.

llvm-svn: 232444
 2015-03-17 00:42:13 +00:00