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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+84
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-84/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [InstCombine] allow any pair of bitcasts to be combinedSanjay Patel2015-12-121-12/+6
| | | | | | | | | | | | | | | | | | | | This change is discussed in D15392 and should allow us to effectively revert: http://llvm.org/viewvc/llvm-project?view=revision&revision=255261 if we canonicalize bitcasts ahead of extracts. It should be safe to convert any pair of bitcasts into a single bitcast, however, it was mentioned here: http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20110829/127089.html that we're not allowed to bitcast from an x86_mmx to some other types, but I'm not seeing any failures from that, and we have regression tests in CodeGen/X86 that appear to cover all of those cases. Some day we'll get to remove that MMX wart from LLVM IR completely? Differential Revision: http://reviews.llvm.org/D15468 llvm-svn: 255399
* Add tests for bitcast-bitcast sequences for all scalar/vector permutationsSanjay Patel2015-12-111-0/+90
As noted in http://reviews.llvm.org/D15392 , we should be able to improve this. llvm-svn: 255370
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