[PATCH] D78591: [AMDGPU] Define special SGPR subregs

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp:266-267
 
+  for (auto Reg : AMDGPU::SReg_32RegClass) {
+    Reserved.set(getSubReg(Reg, AMDGPU::hi16));
+    Register Low = getSubReg(Reg, AMDGPU::lo16);
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Can't you just iterate SGPR_16LO and use reserveRegisterTuples?


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  https://reviews.llvm.org/D78591/new/

https://reviews.llvm.org/D78591