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re PR tree-optimization/36792 (Revision 137631 causes many failures)

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2008-12-10  Daniel Berlin  <dberlin@dberlin.org>

	PR tree-optimization/36792
	* tree-ssa-pre.c (compute_avail): Don't insert defs into maximal
	set.

From-SVN: r142659
This commit is contained in:
Daniel Berlin 2008-12-10 20:13:39 +00:00 • committed by Daniel Berlin
parent db89a3be51
commit 615cb001bb
4 changed files with 15 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2008-12-10 Daniel Berlin <dberlin@dberlin.org>
PR tree-optimization/36792
* tree-ssa-pre.c (compute_avail): Don't insert defs into maximal
set.
2008-12-10 Alexandre Oliva <aoliva@redhat.com>
PR target/37033

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2008-12-10 Daniel Berlin <dberlin@dberlin.org>
PR tree-optimization/36792
* gcc.dg/tree-ssa/ssa-fre-10.c: Update expected results.
2008-12-10 Alexandre Oliva <aoliva@redhat.com>
PR middle-end/38271

4
gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-10.c
View file

@ -4,6 +4,8 @@
union loc { unsigned reg; signed offset; };
void __frame_state_for (volatile char *state_in, int x)
{
/* We should move all the loads out of this loop. Right now, we only
move one. It takes two insertions because we insert a cast. */
union loc fs;
int reg;
for (;;) {
@ -16,5 +18,5 @@ void __frame_state_for (volatile char *state_in, int x)
}
}
/* { dg-final { scan-tree-dump-not "Insertions:" "pre" } } */
/* { dg-final { scan-tree-dump "Insertions: 2" "pre" } } */
/* { dg-final { cleanup-tree-dump "pre" } } */

5
gcc/tree-ssa-pre.c
View file

@ -3644,10 +3644,7 @@ compute_avail (void)
add_to_value (get_expr_value_id (e), e);
if (!in_fre)
{
bitmap_insert_into_set (TMP_GEN (block), e);
bitmap_value_insert_into_set (maximal_set, e);
}
bitmap_insert_into_set (TMP_GEN (block), e);
bitmap_value_insert_into_set (AVAIL_OUT (block), e);
}