On 06/05/2015 05:17 PM, David Malcolm wrote:
On Fri, 2015-06-05 at 16:18 -0400, David Malcolm wrote:
On Fri, 2015-06-05 at 15:37 -0400, Aldy Hernandez wrote:
On 06/05/2015 03:00 PM, David Malcolm wrote:
"jit" isn't part of "all" languages, and currently fails to build on
the aldyh/debug-early branch:

The debug-early work is now in mainline.  Feel free to commit when you
deem appropriate, since you are the jit maintainer ;-).

Given that it fixes the build of the jit, I've gone ahead and committed
the patch as-is to trunk (r224170).

   static void
-jit_langhook_write_globals (void)
+jit_langhook_post_compilation_parsing_cleanups (void)
   {
     gcc::jit::playback::context *ctxt = gcc::jit::active_playback_ctxt;
     gcc_assert (ctxt);
     JIT_LOG_SCOPE (ctxt->get_logger ());

-  ctxt->write_global_decls_1 ();
-
-  /* This is the hook that runs the middle and backends: */
-  symtab->finalize_compilation_unit ();
-
-  ctxt->write_global_decls_2 ();
+  ctxt->finalize_global_decls ();

This hook gets called after the compilation proper has run, and we're
trying to avoid it.  We're trying to get all the front-ends to finish
their thing and avoid depending on the compilation proper.

Can you not get this to work without running finalize_global_decls after
the compilation proper?  If not, then I see no problem with your
patch....after all, C++ is still using this hook :(.

Am investigating.

All that it was doing was calling varpool_node::finalize_decl on each
global; it appears that it's OK to instead call that on them as soon as
they're created (despite the name).

Perfect.  The earlier the better.

In most of the front-ends I think we are calling finalize_decl via rest_of_decl_compilation which is where we also call the early_global_decl hook.


I've committed the attached patch to trunk (r224173) which removes the
hook; "make check-jit" gives the same results as before, and I again
hand-tested (with gdb) jit.dg's test-using-global.c and
test-fibonacci.c.


Excellent.

Thanks.

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