On Fri, Nov 11, 2016 at 09:10:48AM -0800, Aldy Hernandez wrote:
> The problem in this PR is that -fself-test is being run on a non empty
> source file. This causes init_emit() to run, which sets:
>
> REG_POINTER (virtual_incoming_args_rtx) = 1;
>
> Setting REG_POINTER on the virtual incoming args, causes /f to be printed on
> some RTL dumps, causing the -fself-test machinery to fail at matching the
> expected value.
>
> It looks that by design -fself-test is meant to be run before any
> initialization like the aforementioned runs.
Won't -fself-test -fno-syntax-only still crash? I.e. wouldn't it be better
to deal with this e.g. in finish_options? Or perhaps error out if
-fself-tests is not used with -fsyntax-only and change the Makefile to
invoke it with both options?
Jakub
