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4 Commits

Author SHA1 Message Date
Simon Pilgrim
b432f80e48 [ARM] Update ror.ll test to canonicalized IR 
As discussed on D124839, we're almost certainly only ever going to see this from IR directly - which now will create funnel shift intrinsics directly

I've also added a couple of rotl(rotr()) tests to check left/right rotation merging.
 2022-05-07 17:23:42 +01:00
Simon Pilgrim
adda256a7d [ARM] Regenerate rotation tests 
llvm-svn: 367214
 2019-07-29 09:48:07 +00:00
Andrew Zhogin
45d192823e [DAGCombiner] visitRotate patch to optimize pair of ROTR/ROTL instructions into one with combined shift operand. 
For two ROTR operations with shifts C1, C2; combined shift operand will be (C1 + C2) % bitsize.

Differential revision: https://reviews.llvm.org/D12833

llvm-svn: 307179
 2017-07-05 17:55:42 +00:00
Andrew Zhogin
2f8be0552e [ARM][test] Added test/CodeGen/ARM/ror.ll test. NFC precommit for D12833. 
llvm-svn: 307103
 2017-07-04 19:50:22 +00:00