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Author SHA1 Message Date
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
Hans Wennborg ae9c971a2f LowerSwitch: replace unreachable default with popular case destination 
SimplifyCFG currently does this transformation, but I'm planning to remove that
to allow other passes, such as this one, to exploit the unreachable default.

This patch takes care to keep track of what case values are unreachable even
after the transformation, allowing for more efficient lowering.

Differential Revision: http://reviews.llvm.org/D6697

llvm-svn: 226934
 2015-01-23 20:43:51 +00:00