[llvm] [FastIsel] Get the right register type for call instruction (PR #164565)

[Luo Yuanke via llvm-commits]

================
@@ -1977,8 +1977,13 @@ SDValue SelectionDAGBuilder::getValueImpl(const Value *V) {
   if (const Instruction *Inst = dyn_cast<Instruction>(V)) {
     Register InReg = FuncInfo.InitializeRegForValue(Inst);
 
+    std::optional<CallingConv::ID> CallConv;
+    auto *CI = dyn_cast<CallInst>(Inst);
----------------
LuoYuanke wrote:

Do you mean CallBase can cover `invoke`, `callbr` instructions which also have cconv, but CallInst only cover `call` instruction?

https://github.com/llvm/llvm-project/pull/164565