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4 Commits

Author SHA1 Message Date
Sanjoy Das 84216672da Remove trailing newline from test case; NFC 
llvm-svn: 262980
 2016-03-09 01:51:44 +00:00
Sanjoy Das 97d19bd95f [SCEV] Slightly generalize getRangeViaFactoring 
Building on the previous change, this generalizes
ScalarEvolution::getRangeViaFactoring to work with
{Ext(C?A:B)+k0,+,Ext(C?A:B)+k1} where Ext can be a zero extend, sign
extend or truncate operation, and k0 and k1 are constants.

llvm-svn: 262979
 2016-03-09 01:51:02 +00:00
Sanjoy Das d3488c6060 [SCEV] Slightly generalize getRangeViaFactoring 
This change generalizes ScalarEvolution::getRangeViaFactoring to work
with {Ext(C?A:B),+,Ext(C?A:B)} where Ext can be a zero extend, sign
extend or truncate operation.

llvm-svn: 262978
 2016-03-09 01:50:57 +00:00
Sanjoy Das 724f5cf278 [SCEV] Prove no-overflow via constant ranges 
Exploit ScalarEvolution::getRange's newly acquired smartness (since
r262438) by using that to infer nsw and nuw when possible.

llvm-svn: 262639
 2016-03-03 18:31:29 +00:00