[PATCH] D100788: [SystemZ] Support i128 inline asm operands

[Ulrich Weigand via Phabricator via llvm-commits]

uweigand added inline comments.


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Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:8568
+          const TargetRegisterClass *RC = nullptr;
+          if (RegVT == MVT::Untyped) {
+            const MachineFunction &MF = DAG.getMachineFunction();
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Instead of recomputing the RC here, can't we get it from the flag word of the matching operand, e.g. using `hasRegClassConstraint(OpFlag, RCID)`?  This would match the way we get the number of registers from the flag word instead of recomputing it as well.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100788/new/

https://reviews.llvm.org/D100788