[llvm-branch-commits] [llvm] [WebAssembly][GlobalISel] Implement `COPY` (PR #197256)

[Matt Arsenault via llvm-branch-commits]

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@@ -83,13 +85,82 @@ WebAssemblyInstructionSelector::WebAssemblyInstructionSelector(
 {
 }
 
+bool WebAssemblyInstructionSelector::selectCopy(
+    MachineInstr &I, MachineRegisterInfo &MRI) const {
+  Register DstReg = I.getOperand(0).getReg();
+  Register SrcReg = I.getOperand(1).getReg();
+
+  const TargetRegisterClass *DstRC;
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arsenm wrote:

Use getConstrainedRegClassForOperand? (these APIs need work, there's no reason they should have a MachineOperand involved) 

https://github.com/llvm/llvm-project/pull/197256