MMO can be scalable vector type so we use TypeSize isKnownGT to compare load memory size with result size

Author: jiahanxie353

llvm/lib/CodeGen/MachineVerifier.cpp

@@ -1192,7 +1192,7 @@ void MachineVerifier::verifyPreISelGenericInstruction(const MachineInstr *MI) {
         if (MMO.getSizeInBits() >= ValTy.getSizeInBits())
           report("Generic extload must have a narrower memory type", MI);
       } else if (MI->getOpcode() == TargetOpcode::G_LOAD) {
-        if (MMO.getSize() > ValTy.getSizeInBytes())
+        if (TypeSize::isKnownGT(MMO.getMemoryType().getSizeInBytes(), ValTy.getSizeInBytes()))
           report("load memory size cannot exceed result size", MI);
       } else if (MI->getOpcode() == TargetOpcode::G_STORE) {
         if (ValTy.getSizeInBytes() < MMO.getSize())