[PATCH] D88274: [PowerPC] Put the CR field in low bits of GRC during copying CRRC to GRC.

ChenZheng via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sat Sep 26 17:48:15 PDT 2020


shchenz added inline comments.


================
Comment at: llvm/test/CodeGen/PowerPC/reg_copy.mir:83
+    ; CHECK: $x5 = MFOCRF8 $cr7
+    ; CHECK: $x5 = RLWINM8 killed $x5, 32, 28, 31, implicit-def $x3
+    ; CHECK: BLR8 implicit $lr8, implicit $rm, implicit $x3
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Maybe we can save the rlwinm when cr field is cr7. Rotate left 32 equals to no rotate?


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  https://reviews.llvm.org/D88274/new/

https://reviews.llvm.org/D88274



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