[PATCH] D150381: [AMDGPU] Add optional tied-op for wwm-register's epilog spill restore

[Matt Arsenault via Phabricator via llvm-commits]

arsenm accepted this revision.
arsenm added a comment.
This revision is now accepted and ready to land.

LGTM with nit



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Comment at: llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp:1669
+    // so that it marks a usage for the preceding COPY.
+    if (!IsStore && MBB.isReturnBlock() && MI->isReturn() &&
+        MI->readsRegister(SubReg, this)) {
----------------
MBB.isReturnBlock is redundant with MI->isReturn. isReturnBlock just checks if the last instruction is a return 


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  https://reviews.llvm.org/D150381/new/

https://reviews.llvm.org/D150381