[llvm-branch-commits] [llvm] AMDGPU/GlobalISel: StandaloneRegBankSelect (PR #112863)

[Petar Avramovic via llvm-branch-commits]

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@@ -63,4 +70,189 @@ char &llvm::AMDGPURBSelectID = AMDGPURBSelect::ID;
 
 FunctionPass *llvm::createAMDGPURBSelectPass() { return new AMDGPURBSelect(); }
 
-bool AMDGPURBSelect::runOnMachineFunction(MachineFunction &MF) { return true; }
+bool shouldRBSelect(MachineInstr &MI) {
+  if (isTargetSpecificOpcode(MI.getOpcode()) && !MI.isPreISelOpcode())
+    return false;
+
+  if (MI.getOpcode() == AMDGPU::PHI || MI.getOpcode() == AMDGPU::IMPLICIT_DEF)
+    return false;
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petar-avramovic wrote:

I copied that from existing regbankselect. MI.isPreISelOpcode() || MI.isCopy() also works

https://github.com/llvm/llvm-project/pull/112863