NOTES.txt

Things to take in count while implementing the CodeGenerator.


1. The professor do not use generic instruction for all the types (String, int , float...). Instead, depending on the
 type he uses specific instructions. Check:

  private void numOperation(int longOpcode, int doubleOpcode, Type left, Type right)

  From his Github.

https://github.com/norswap/sigh/blob/8301a3a988eb4ddd2667de1c8edef11e1d790709/src/norswap/sigh/bytecode/BytecodeCompiler.java#L861

invokeStatic(method, SighRuntime.class, "concat", String.class, String.class)

>>>>>>>>> private Object binaryExpression (BinaryExpressionNode node)



2. "Just emit a xCONST_x / LDC instruction, and ASM will make sure the constant is added to the pool." It is stated in the slides

3. "Takes care of sizing the stack and the space for locals." It is stated in the slides



4. "Unified interface for loading constants (loadConstant(methodVisitor, 1) vs  methodVisitor.visitInsn(ICONST_1))" It is stated in the slides


5. InstructionAdapter > https://stackoverflow.com/questions/44676210/java-asm-how-to-create-local-variables-in-method


6. As extra feature for the project > visitLocalVariable  > https://stackoverflow.com/questions/28633731


7. JavaAssist