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reload1.c (calculate_needs_all_insns): If deleting an instruction, remove its insn_chain structure as well.

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* reload1.c (calculate_needs_all_insns): If deleting an instruction,
	remove its insn_chain structure as well.

	* gcc.dg/20001009-1.c: New test.

From-SVN: r36824
This commit is contained in:
Jakub Jelinek 2000-10-10 15:48:00 +02:00 committed by Jakub Jelinek
parent a7210984e1
commit 462561b741
4 changed files with 69 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2000-10-10 Jakub Jelinek <jakub@redhat.com>
* reload1.c (calculate_needs_all_insns): If deleting an instruction,
remove its insn_chain structure as well.
2000-10-09 J. David Anglin <dave@hiauly1.hia.nrc.ca> 2000-10-09 J. David Anglin <dave@hiauly1.hia.nrc.ca>
* dbxout.c (dbxout_source_line): Remove extra tab. * dbxout.c (dbxout_source_line): Remove extra tab.

15
gcc/reload1.c
View File

@ -1330,15 +1330,17 @@ calculate_needs_all_insns (global)
int global; int global;
{ {
struct insn_chain **pprev_reload = &insns_need_reload; struct insn_chain **pprev_reload = &insns_need_reload;
struct insn_chain *chain; struct insn_chain *chain, *next = 0;
something_needs_elimination = 0; something_needs_elimination = 0;
reload_insn_firstobj = (char *) obstack_alloc (&reload_obstack, 0); reload_insn_firstobj = (char *) obstack_alloc (&reload_obstack, 0);
for (chain = reload_insn_chain; chain != 0; chain = chain->next) for (chain = reload_insn_chain; chain != 0; chain = next)
{ {
rtx insn = chain->insn; rtx insn = chain->insn;
next = chain->next;
/* Clear out the shortcuts. */ /* Clear out the shortcuts. */
chain->n_reloads = 0; chain->n_reloads = 0;
chain->need_elim = 0; chain->need_elim = 0;
@ -1394,6 +1396,15 @@ calculate_needs_all_insns (global)
PUT_CODE (insn, NOTE); PUT_CODE (insn, NOTE);
NOTE_SOURCE_FILE (insn) = 0; NOTE_SOURCE_FILE (insn) = 0;
NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED; NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;
/* Delete it from the reload chain */
if (chain->prev)
chain->prev->next = next;
else
reload_insn_chain = next;
if (next)
next->prev = chain->prev;
chain->next = unused_insn_chains;
unused_insn_chains = chain;
continue; continue;
} }
} }

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2000-10-10 Jakub Jelinek <jakub@redhat.com>
* gcc.dg/20001009-1.c: New test.
Mon Oct 9 23:32:06 MET DST 2000 Jan Hubicka <jh@suse.cz> Mon Oct 9 23:32:06 MET DST 2000 Jan Hubicka <jh@suse.cz>
* gcc.c-torture/compile/20001009-1.c: Move from here .... * gcc.c-torture/compile/20001009-1.c: Move from here ....

47
gcc/testsuite/gcc.dg/20001009-1.c Normal file
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@ -0,0 +1,47 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fpic" } */
extern void foo (void *a, double x, double y);
void
bar (void *a, double b, double c, double d, double e, double f, double g, double h, double i, double j, double k[6])
{
double l, m, n, o, p;
double q, r, s, t, u;
double x, y, v, w;
double z = 0.5 * j;
double aa;
l = b - 3 * d;
m = 4 * f;
n = f - h;
q = c + 3 * g - i;
r = 2 * (e - 2 * g + i);
s = g - i;
if (l != 0.0)
{
aa = 0.0;
o = (- m + aa);
p = (- m - aa);
if (o > 0.0)
{
x = ((b-h)*o + 3*(d+h)*o + 3*(f-h)*o);
y = ((c-i)*o + 3*(e+i)*o + 3*(g-i)*o);
foo (a, z, w);
foo (a, -z, w);
}
if (p > 0.0)
{
x = ((b+3*f-h)*p + 3*(d-2*f+h)*p + 3*p);
y = ((c+3*g-i)*p + 3*(e-2*g+i)*p + 3*p);
v = x * k[0] + y * k[2];
w = x * k[1] + y * k[3];
foo (a, z, w);
foo (a, - z, w);
}
}
if (q != 0.0)
{
aa = 0.0;
t = (- r + aa) / (2 * q);
u = (- r - aa) / (2 * q);
}
}