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re PR debug/47106 (-fcompare-debug failure (length) with -fpartial-inlining -flto -fconserve-stack)

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PR debug/47106
* cfgexpand.c (account_used_vars_for_block): Only account vars
that are annotated as used.
(estimated_stack_frame_size): Don't set TREE_USED.
* tree-dfa.c (create_var_ann): Mark variable as used.

From-SVN: r169093
This commit is contained in:
Alexandre Oliva 2011-01-21 14:57:33 +00:00 • committed by Alexandre Oliva
parent f99cc488e2
commit 1c7d0b34dc
3 changed files with 14 additions and 2 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2011-01-21 Alexandre Oliva <aoliva@redhat.com>
PR debug/47106
* cfgexpand.c (account_used_vars_for_block): Only account vars
that are annotated as used.
(estimated_stack_frame_size): Don't set TREE_USED.
* tree-dfa.c (create_var_ann): Mark variable as used.
2011-01-21 Richard Guenther <rguenther@suse.de>
PR middle-end/47395

5
gcc/cfgexpand.c
View file

@ -1325,7 +1325,7 @@ account_used_vars_for_block (tree block, bool toplevel)
/* Expand all variables at this level. */
for (t = BLOCK_VARS (block); t ; t = DECL_CHAIN (t))
if (TREE_USED (t))
if (var_ann (t) && var_ann (t)->used)
size += expand_one_var (t, toplevel, false);
/* Expand all variables at containing levels. */
@ -1389,9 +1389,10 @@ estimated_stack_frame_size (tree decl)
FOR_EACH_LOCAL_DECL (cfun, ix, var)
{
/* TREE_USED marks local variables that do not appear in lexical
blocks. We don't want to expand those that do twice. */
if (TREE_USED (var))
size += expand_one_var (var, true, false);
TREE_USED (var) = 1;
}
size += account_used_vars_for_block (outer_block, true);

3
gcc/tree-dfa.c
View file

@ -137,6 +137,9 @@ create_var_ann (tree t)
ann = ggc_alloc_cleared_var_ann_d ();
*DECL_VAR_ANN_PTR (t) = ann;
/* Assume the variable is used, at least for now. */
ann->used = true;
return ann;
}