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Author SHA1 Message Date
Chen Zheng ffa9fa9ed2 [PowerPC] prepare for udpate form with non-const increment. 
This is a follow-up of D105872. Now we are able to prepare for update
form with non-const increment.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D106032
 2021-09-22 02:54:28 +00:00
Chen Zheng 946e69d253 [PowerPC] prepare more loop load/store instructions 
PPCLoopInstrFormPrep pass now can prepare for load store instructions
in a loop whose increment is not a constant integer.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D105872
 2021-09-14 05:00:48 +00:00
Chen Zheng 34badc409c Revert "[HardwareLoops] Change order of SCEV expression construction for InitLoopCount." 
This causes https://bugs.llvm.org/show_bug.cgi?id=51714 and
is not a right patch according to comments in D91724

This reverts commit 42eaf4fe0a.
 2021-09-03 02:55:43 +00:00
Chen Zheng 70788052ac [PowerPC][NFC] add testcase for update-form preparation with non-const increment 2021-07-15 02:46:24 +00:00
Chen Zheng 8a29977429 [PowerPC][NFC] add test case for preparing more loads/stores 2021-07-13 06:00:19 +00:00