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backport: re PR rtl-optimization/39453 (ICE : in init_seqno, at sel-sched.c:6433) 

Backport from mainline:
 2010-01-14  Alexander Monakov  <amonakov@ispras.ru>

        PR rtl-optimization/39453
        PR rtl-optimization/42246
        * sel-sched-ir.c (considered_for_pipelining_p): Do not test
        for pipelining_p.
        (sel_add_loop_preheaders): Add preheader to last_added_blocks.

        * gcc.dg/pr39453.c: New.
        * gcc.dg/pr42246.c: New.

From-SVN: r163505
This commit is contained in:
Andrey Belevantsev 2010-08-24 12:58:36 +04:00 committed by Andrey Belevantsev
parent 8b97cddde8
commit 5f196b8cc1
5 changed files with 79 additions and 1 deletions
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11
gcc/ChangeLog
View File

@ -1,3 +1,14 @@
2010-08-24 Andrey Belevantsev <abel@ispras.ru>
Backport from mainline:
2010-01-14 Alexander Monakov <amonakov@ispras.ru>
PR rtl-optimization/39453
PR rtl-optimization/42246
* sel-sched-ir.c (considered_for_pipelining_p): Do not test
for pipelining_p.
(sel_add_loop_preheaders): Add preheader to last_added_blocks.
2010-08-24 Andrey Belevantsev <abel@ispras.ru>
Backport from mainline:

5
gcc/sel-sched-ir.c
View File

@ -5843,7 +5843,7 @@ considered_for_pipelining_p (struct loop *loop)
latch. We can't use header here, because this header could be
just removed preheader and it will give us the wrong region number.
Latch can't be used because it could be in the inner loop too. */
if (LOOP_MARKED_FOR_PIPELINING_P (loop) && pipelining_p)
if (LOOP_MARKED_FOR_PIPELINING_P (loop))
{
int rgn = CONTAINING_RGN (loop->latch->index);
@ -5994,7 +5994,10 @@ sel_add_loop_preheaders (void)
for (i = 0;
VEC_iterate (basic_block, preheader_blocks, i, bb);
i++)
{
VEC_safe_push (basic_block, heap, last_added_blocks, bb);
sel_add_bb (bb);
}
VEC_free (basic_block, heap, preheader_blocks);
}

10
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,13 @@
2010-08-24 Andrey Belevantsev <abel@ispras.ru>
Backport from mainline:
2010-01-14 Alexander Monakov <amonakov@ispras.ru>
PR rtl-optimization/39453
PR rtl-optimization/42246
* gcc.dg/pr39453.c: New.
* gcc.dg/pr42246.c: New.
2010-08-24 Andrey Belevantsev <abel@ispras.ru>
Backport from mainline:

18
gcc/testsuite/gcc.dg/pr39453.c Normal file
View File

@ -0,0 +1,18 @@
/* { dg-do compile { target powerpc*-*-* ia64-*-* x86_64-*-* } } */
/* { dg-options "-O2 -fselective-scheduling2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops" } */
int foo(int k, int n)
{
int i;
for (i = 0; i < n; i += 8) {
int j;
for (j = 0; j < n; j += 8) {
while (k < n) {
k += 8;
}
}
}
return k;
}

36
gcc/testsuite/gcc.dg/pr42246.c Normal file
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@ -0,0 +1,36 @@
/* { dg-do compile { target powerpc*-*-* ia64-*-* x86_64-*-* } } */
/* { dg-options "-O2 -fselective-scheduling -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops" } */
typedef enum
{
empty = 0, pawn = 1, knight = 2, king = 3, bishop = 5, rook = 6, queen = 7
}
PIECE;
extern int p_values[15];
extern int *last[65];
int
Quiesce (int alpha, int beta, int wtm, int ply)
{
register int initial_alpha, value, delta;
register int *goodmv, *movep, moves = 0, *sortv, temp;
for (movep = last[ply - 1]; movep < last[ply]; movep++)
if (p_values[(((*movep) >> 15) & 7) + 7] +
p_values[(((*movep) >> 18) & 7) + 7] >= delta)
{
register int done;
register int *end = last[ply - 1] + moves - 1;
do
{
done = 1;
movep = last[ply - 1];
for (; movep < end; movep++, sortv++)
if (*sortv < *(sortv + 1))
{
*(movep + 1) = temp;
done = 0;
}
}
while (!done);
}
}