[PATCH] D80460: [AArch64][GlobalISel] When generating SUBS for compares, don't write to wzr/xzr.

[Jessica Paquette via Phabricator via llvm-commits]

paquette added inline comments.


================
Comment at: llvm/lib/Target/AArch64/AArch64InstructionSelector.cpp:3702
     CmpOpc = AArch64::SUBSWrr;
     ZReg = AArch64::WZR;
+    ZReg = MRI.createVirtualRegister(&AArch64::GPR32RegClass);
----------------
Can probably remove this


================
Comment at: llvm/lib/Target/AArch64/AArch64InstructionSelector.cpp:3706
     CmpOpc = AArch64::SUBSXrr;
     ZReg = AArch64::XZR;
+    ZReg = MRI.createVirtualRegister(&AArch64::GPR64RegClass);
----------------
Can probably remove this


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D80460/new/

https://reviews.llvm.org/D80460