Re: [patch 10/10] debug-early merge: compiler proper

[Aldy Hernandez <aldyh at redhat dot com>]

> How does this version, which has been committed to the debug-early
> branch, look?

One more thing Richi.  I merged trunk into the branch once again, and Go 
broke.  I tracked it down to a temporary that was being created late 
that IMO shouldn't even get debug info.

The fact that it gets created with create_tmp_var_name() in the first 
place is suspect.  The problem is actually the type, which doesn't even 
get passed through rest_of_type* or the debug_hooks->type_decl(). 
However, I see no reason to have these temporary variables even get fed 
to the debugger, so I'm marking them as DECL_IGNORED_P.

If you want I can repost the whole compiler proper patch, but this is a 
small enough change that y'all can just wave through.

I've committed the snippet below to the branch.  Everything else is as 
it was.

Branch retested on x86-64 Linux and has been merged with trunk.

commit 8824b5ecba26cef065e47b34609c72677c3c36fc
Author: Aldy Hernandez <aldyh@redhat.com>
Date:   Wed May 20 16:31:14 2015 -0400

    Set DECL_IGNORED_P on temporary arrays created in the switch
    conversion pass.

diff --git a/gcc/tree-switch-conversion.c b/gcc/tree-switch-conversion.c
index 6b68a16..a4bcdba 100644
--- a/gcc/tree-switch-conversion.c
+++ b/gcc/tree-switch-conversion.c
@@ -1097,6 +1097,7 @@ build_one_array (gswitch *swtch, int num, tree 
arr_index_type,
       DECL_ARTIFICIAL (decl) = 1;
       TREE_CONSTANT (decl) = 1;
       TREE_READONLY (decl) = 1;
+      DECL_IGNORED_P (decl) = 1;
       varpool_node::finalize_decl (decl);

       fetch = build4 (ARRAY_REF, value_type, decl, tidx, NULL_TREE,