OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity
400,462 Commits 31 Branches 0 Tags 2.2 GiB
Commit Graph

4 Commits

Author SHA1 Message Date
Simon Pilgrim 401d6685c0 [InstCombine] InstCombinerImpl::visitOr - enable bitreverse matching 
Currently we only match bswap intrinsics from or(shl(),lshr()) style patterns when we could often match bitreverse intrinsics almost as cheaply.

Differential Revision: https://reviews.llvm.org/D90170
 2021-05-15 13:39:09 +01:00
Simon Pilgrim a6ad077f5d [InstCombine] Add i8 bitreverse by multiplication test patterns 
Pulled from bit twiddling hacks webpage
 2020-10-23 15:39:57 +01:00
Simon Pilgrim 61d1847b12 [InstCombine] Add 8/16/32/64 bitreverse test coverage 
Use typical codegen for the traditional pairwise lgN bitreverse algorithm
 2020-10-23 15:39:56 +01:00
Simon Pilgrim 9e7667e2ad [InstCombine] Add initial bitreverse test coverage 2020-10-23 15:39:56 +01:00