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Re: PR79286, ira combine_and_move_insns in loops

On 02/22/2017 04:32 AM, Dominique d'Humières wrote:



Le 21 févr. 2017 à 23:48, Alan Modra <amodra@gmail.com> a écrit :

On Sat, Feb 18, 2017 at 12:39:08PM +0100, Dominique d'Humières wrote:

I'm slightly concerned about the test and how it'll behave on targets with small address spaces. If it's a problem we can fault in adjustments.


The test fails on x86_64-apple-darwin16 with -m32 and -O1 and above.


Have you investigated just why the test fails?


Segmentation fault

Note that the assembly is the same for revisions r245268 and r245564, i.e., before and after r245521.

Given the array index, I kindof expected problems on 32bit platforms.
Let me stand up an i686 linux instance and see if I can twiddle things without compromising the test. 

jeff
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