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4 Commits

Author SHA1 Message Date
czhengsz
8832763935 [PowerPC] NFC - fix the testcase bug of folding rlwinm 2019-12-23 10:28:22 -05:00
czhengsz
f0adb8a850 [PowerPC] folding rlwinm + rlwinm to rlwinm 
For example:
    x3 = rlwinm x3, 27, 5, 31
    x3 = rlwinm x3, 19, 0, 12
  can be combined to
    x3 = rlwinm x3, 14, 0, 12

Reviewed by: steven.zhang, lkail

Differential Revision: https://reviews.llvm.org/D70374
 2019-12-03 21:51:19 -05:00
czhengsz
34a5aa07c3 Revert "[PowerPC] combine rlwinm+rlwinm to rlwinm" 
This reverts commit 29f6f9b2b2bfecccf903738e2f5a0cd0a70fce31.
 2019-11-24 22:46:26 -05:00
czhengsz
0ce2ab6b1d [PowerPC] combine rlwinm+rlwinm to rlwinm 
combine
x3 = rlwinm x3, 27, 5, 31
x3 = rlwinm x3, 19, 0, 12

to
x3 = rlwinm x3, 14, 0, 12

Reviewed by: steven.zhang

Differential Revision: https://reviews.llvm.org/D70374
 2019-11-22 00:00:33 -05:00