Re: [PATCH] llvm: fix output_op_[ptr]cast()

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On Fri, Mar 3, 2017 at 7:06 PM, Dibyendu Majumdar
<mobile@xxxxxxxxxxxxxxx> wrote:
> The problem occurs in this sequence:
>
>        ptrcast.64  %r26 <- (64) %r20
>        add.64      %r27 <- %r26, %r23
>        cast.64     %r28 <- (64) %r27
>        store.64    %r28 -> 16[%arg1]
>
> The last cast finds that the instruction type in an integer and does a
> cast to Integer, so that causes the store to fail as it expects a
> pointer.

What is the corresponding C code?
With the patches I've posted, the three example you've given are handled
without error for me.

> Question in my mind is what is the result type of an add operation
> when one of the arguments is a pointer?

This should only occurs as some form of pointer arithmetic, so the result
should be some kind of pointer.

Luc
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