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I just realized that I've been using `IntInsnNode` instead of `VarInsnNode` (and `visitIntInsn` vs `visitVarInsn` ) in ASM for literal years now without realizing. Have I been silently screwing up my programs?  Is there a meaningful difference between `IntInsnNode(ALOAD, 0)` and `VarInsnNode(ALOAD, 0)` that I should be aware of?

asm doesn't perform checking but IntInsnNode is incorrect, it is documented to only work with BIPUSH, SIPUSH, or NEWARRAY <https://asm.ow2.io/javadoc/org/objectweb/asm/tree/IntInsnNode.html#%3Cinit%3E(int,int)|https://asm.ow2.io/javadoc/org/objectweb/asm/tree/IntInsnNode.html#%3Cinit%3E(int,int)>

the docs for the visit methods also indicate which opcodes can be used <https://asm.ow2.io/javadoc/org/objectweb/asm/MethodVisitor.html#visitIntInsn(int,int)|https://asm.ow2.io/javadoc/org/objectweb/asm/MethodVisitor.html#visitIntInsn(int,int)> <https://asm.ow2.io/javadoc/org/objectweb/asm/MethodVisitor.html#visitVarInsn(int,int)|https://asm.ow2.io/javadoc/org/objectweb/asm/MethodVisitor.html#visitVarInsn(int,int)>