Use readPushData() in instruction compilation

libevmjit/Compiler.cpp

@@ -554,15 +554,11 @@ void Compiler::compileBasicBlock(BasicBlock& basicBlock, bytesConstRef bytecode,
 
 		case Instruction::ANY_PUSH:
 		{
-			const auto numBytes = static_cast<size_t>(inst) - static_cast<size_t>(Instruction::PUSH1) + 1;
-			auto value = llvm::APInt(256, 0);
-			for (auto lastPC = currentPC + numBytes; currentPC < lastPC;)
-			{
-				value <<= 8;
-				value |= bytecode[++currentPC];
-			}
+			auto curr = bytecode.begin() + currentPC;	// TODO: replace currentPC with iterator
+			auto value = readPushData(curr, bytecode.end());
+			currentPC = curr - bytecode.begin();
 
-			stack.push(m_builder.getInt(value));
+			stack.push(Constant::get(value));
 			break;
 		}