[GlobalISel] Allow customizing instruction-select pass

- Allow customizing instruction-select pass to add additional analysis
  dependencies.

Reviewers: aemerson, arsenm, aeubanks

Reviewed By: arsenm

Pull Request: #95724

Author: darkbuck

llvm/include/llvm/CodeGen/GlobalISel/InstructionSelect.h

@@ -49,8 +49,8 @@ class InstructionSelect : public MachineFunctionPass {
         MachineFunctionProperties::Property::Selected);
   }
 
-  InstructionSelect(CodeGenOptLevel OL);
-  InstructionSelect();
+  InstructionSelect(CodeGenOptLevel OL = CodeGenOptLevel::Default,
+                    char &PassID = ID);
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 

llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp

@@ -62,14 +62,8 @@ INITIALIZE_PASS_END(InstructionSelect, DEBUG_TYPE,
                     "Select target instructions out of generic instructions",
                     false, false)
 
-InstructionSelect::InstructionSelect(CodeGenOptLevel OL)
-    : MachineFunctionPass(ID), OptLevel(OL) {}
-
-// In order not to crash when calling getAnalysis during testing with -run-pass
-// we use the default opt level here instead of None, so that the addRequired()
-// calls are made in getAnalysisUsage().
-InstructionSelect::InstructionSelect()
-    : MachineFunctionPass(ID), OptLevel(CodeGenOptLevel::Default) {}
+InstructionSelect::InstructionSelect(CodeGenOptLevel OL, char &PassID)
+    : MachineFunctionPass(PassID), OptLevel(OL) {}
 
 void InstructionSelect::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<TargetPassConfig>();