Re: [PATCH] testsuite: scev: expect fail on ilp32

[Jeff Law <jeffreyalaw@gmail.com>]

On 11/19/23 00:30, Alexandre Oliva wrote:
> 
> I've recently patched scev-3.c and scev-5.c because it only passed by
> accident on ia32.  It also fails on some (but not all) arm-eabi
> variants.  It seems hard to characterize the conditions in which the
> optimization is supposed to pass, but expecting them to fail on ilp32
> targets, though probably a little excessive and possibly noisy, is not
> quite as alarming as getting a fail in test reports, so I propose
> changing the xfail marker from ia32 to ilp32.
> 
> I'm also proposing to add a similar marker to scev-4.c.  Though it
> doesn't appear to be failing for me, I've got reports that suggest it
> still does for others, and it certainly did for us as well.
> 
> Regstrapped on x86_64-linux-gnu, also tested on arm-eabi with default
> cpu on trunk, and with tms570 on gcc-13.  Ok to install?
> 
> 
> for  gcc/testsuite/ChangeLog
> 
> 	* gcc.dg/tree-ssa/scev-3.c: xfail on all ilp32 targets,
> 	though some of these do pass.
> 	* gcc.dg/tree-ssa/scev-4.c: Likewise.
> 	* gcc.dg/tree-ssa/scev-5.c: Likewise.
OK.  Though hopefully someone will figure out what properties actually 
cause the differences so that we can do the right thing without the 
noisy XPASS at some point.

jeff