[PATCH] D147031: [MachineCopy] Bug fix sub register machine copy propagation

[Sergei Barannikov via Phabricator via llvm-commits]

barannikov88 added inline comments.


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Comment at: llvm/lib/CodeGen/MachineCopyPropagation.cpp:662
+            TRI->getRegSizeInBits(CopySrcReg, *MRI) &&
+        CheckRegClass(CopyDstReg, CopySrcReg)) {
       SubregIdx = TRI->getSubRegIndex(CopyDstReg, MOUse.getReg());
----------------
All registers in a register class have the same sizes. The check for size above is redundant.



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  https://reviews.llvm.org/D147031/new/

https://reviews.llvm.org/D147031