Hi Christophe,

On Fri, Nov 04, 2016 at 02:31:28PM +0100, Christophe Lyon wrote:
> Since this commit I have noticed execution failures on "old" arm targets:
> 
>   gcc.dg/torture/pr48124-4.c   -O1  execution test
>   gcc.dg/torture/pr48124-4.c   -O2  execution test
>   gcc.dg/torture/pr48124-4.c   -O2 -flto -fno-use-linker-plugin
> -flto-partition=none  execution test
>   gcc.dg/torture/pr48124-4.c   -O2 -flto -fuse-linker-plugin
> -fno-fat-lto-objects  execution test
>   gcc.dg/torture/pr48124-4.c   -O3 -g  execution test
>   gcc.dg/torture/pr48124-4.c   -Os  execution test
> 
> For instance on target arm-none-linux-gnueabi --with-cpu=cortex-a9
> --with-mode=arm
> and running the tests with -march=armv5t

Confirmed.  What a nasty, nasty bug, and it has been here for decades
it seems.  Could you please open a PR?


Segher

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