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tree-ssa-live.c (remove_unused_locals): Skip when not optimizing.

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* tree-ssa-live.c (remove_unused_locals): Skip when not optimizing.
Simplify other tests involving optimize.

From-SVN: r147939
This commit is contained in:
Alexandre Oliva 2009-05-28 06:49:37 +00:00 committed by Alexandre Oliva
parent c0ba77370f
commit 89fbbe4e18
2 changed files with 13 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2009-05-28 Alexandre Oliva <aoliva@redhat.com>
* tree-ssa-live.c (remove_unused_locals): Skip when not optimizing.
Simplify other tests involving optimize.
2009-05-27 Tom Tromey <tromey@redhat.com>
* unwind-dw2.c (_Unwind_DebugHook): New function.

12
gcc/tree-ssa-live.c
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@ -639,6 +639,12 @@ remove_unused_locals (void)
var_ann_t ann;
bitmap global_unused_vars = NULL;
/* Removing declarations from lexical blocks when not optimizing is
not only a waste of time, it actually causes differences in stack
layout. */
if (!optimize)
return;
mark_scope_block_unused (DECL_INITIAL (current_function_decl));
/* Assume all locals are unused. */
@ -701,8 +707,7 @@ remove_unused_locals (void)
if (TREE_CODE (var) != FUNCTION_DECL
&& (!(ann = var_ann (var))
|| !ann->used)
&& (optimize || DECL_ARTIFICIAL (var)))
|| !ann->used))
{
if (is_global_var (var))
{
@ -761,8 +766,7 @@ remove_unused_locals (void)
&& TREE_CODE (t) != PARM_DECL
&& TREE_CODE (t) != RESULT_DECL
&& !(ann = var_ann (t))->used
&& !TREE_ADDRESSABLE (t)
&& (optimize || DECL_ARTIFICIAL (t)))
&& !TREE_ADDRESSABLE (t))
remove_referenced_var (t);
remove_unused_scope_block_p (DECL_INITIAL (current_function_decl));
if (dump_file && (dump_flags & TDF_DETAILS))