Re: [PATCH] -fopenmp-simd LTO ICE fix (PR middle-end/67452)

[Jeff Law <law@redhat.com>]

On 09/04/2015 09:27 AM, Jakub Jelinek wrote:
> Hi!
>
> This patch is a fix for gomp4.1 branch ICEs on
> FAIL libgomp.c/for-5.c
> FAIL libgomp.c++/for-13.C
> that can be reproduced with intelmic emul offloading even on the trunk
> with the attached testcase.  The problem is that LTO streaming doesn't
> really like earlier unreferenced VAR_DECLs to be streamed late during
> output_function (from output_cfg).
>
> The patch fixes it by clearing loop->simduid when optimizations removed
> all IL uses of the var and remove_unused_locals is about to nuke it from
> cfun->local_decls.
>
> Ok for trunk/5.3 if it passes bootstrap/regtest?
>
> 2015-09-04  Jakub Jelinek  <jakub@redhat.com>
>
> 	PR middle-end/67452
> 	* tree-ssa-live.c: Include cfgloop.h.
> 	(remove_unused_locals): Clear loop->simduid if simduid is about
> 	to be removed from cfun->local_decls.
>
> 	* gcc.dg/lto/pr67452_0.c: New test.
OK.
jeff