[RFC, PATCH][LRA, MIPS] ICE: in decompose_normal_address, at rtlanal.c:5817

[Jeff Law]

On 01/14/15 10:10, Robert Suchanek wrote:
> Here is the revised patch that would handle the other cases as per Richard's
> comments.
>
> I slightly modified Matthew's proposed patch and used split_const
> instead of get_related_value. AFAICS, the canonical form would always have
> the 'plus' expression.
>
> The offset on the high part is most likely not important as the code generation
> has to guarantee that the low part represents the true address in the case
> where the high and lo_sum are directly related.
>
> Regards,
> Robert
>
> gcc/
> 	* simplify-rtx.c (simplify_replace_fn_rtx): Simplify (lo_sum
> 	(high x) y) to y if x and y have the same base.
>
> gcc/testsuite/
> 	* gcc.c-torture/compile/20150108.c: New test.
OK.  The MIPS and Sparc ports are probably going to hit this the 
hardest.  So you've got a vested interest in dealing with any fallout :-)

jeff