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re PR bootstrap/43681 (bootstrap fails with "unused" var message for an apparently used var.)

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PR bootstrap/43681
	* expr.c (block_move_libcall_safe_for_call_parm): Avoid
	set but not used variable warning.

From-SVN: r158111
This commit is contained in:
Jakub Jelinek 2010-04-08 12:12:35 +02:00 committed by Jakub Jelinek
parent 7548c1be3a
commit 5a905a2b23
2 changed files with 9 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-04-08 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/43681
* expr.c (block_move_libcall_safe_for_call_parm): Avoid
set but not used variable warning.
2010-04-08 Wei Guozhi <carrot@google.com>
PR target/41653

3
gcc/expr.c
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@ -1262,6 +1262,9 @@ block_move_libcall_safe_for_call_parm (void)
an outgoing argument. */
#if defined (REG_PARM_STACK_SPACE)
fn = emit_block_move_libcall_fn (false);
/* Avoid set but not used warning if *REG_PARM_STACK_SPACE doesn't
depend on its argument. */
(void) fn;
if (OUTGOING_REG_PARM_STACK_SPACE ((!fn ? NULL_TREE : TREE_TYPE (fn)))
&& REG_PARM_STACK_SPACE (fn) != 0)
return false;