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* [Bug tree-optimization/58404] New: &noninvariant_address not forwproped into ->handled_component
@ 2013-09-12 10:42 jakub at gcc dot gnu.org
2013-09-12 10:43 ` [Bug tree-optimization/58404] " rguenth at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-09-12 10:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58404
Bug ID: 58404
Summary: &noninvariant_address not forwproped into
->handled_component
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
On:
struct S { int s; };
S a[1024];
void
foo ()
{
for (int i = 0; i < 1024; i++)
{
S &r = a[i];
r.s++;
}
}
we don't forwprop
r_4 = &a[i_9];
r_4->s = 2;
even when a[i_9].s is valid is_gimple_val. Seen on libgomp.c++/simd-6.C on
gomp-4_0-branch.
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug tree-optimization/58404] &noninvariant_address not forwproped into ->handled_component 2013-09-12 10:42 [Bug tree-optimization/58404] New: &noninvariant_address not forwproped into ->handled_component jakub at gcc dot gnu.org @ 2013-09-12 10:43 ` rguenth at gcc dot gnu.org 2013-09-12 13:20 ` rguenth at gcc dot gnu.org 2013-09-12 13:20 ` rguenth at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2013-09-12 10:43 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58404 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |missed-optimization Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2013-09-12 Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. I will have a look. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/58404] &noninvariant_address not forwproped into ->handled_component 2013-09-12 10:42 [Bug tree-optimization/58404] New: &noninvariant_address not forwproped into ->handled_component jakub at gcc dot gnu.org 2013-09-12 10:43 ` [Bug tree-optimization/58404] " rguenth at gcc dot gnu.org @ 2013-09-12 13:20 ` rguenth at gcc dot gnu.org 2013-09-12 13:20 ` rguenth at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2013-09-12 13:20 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58404 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED Target Milestone|--- |4.9.0 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Fixed. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/58404] &noninvariant_address not forwproped into ->handled_component 2013-09-12 10:42 [Bug tree-optimization/58404] New: &noninvariant_address not forwproped into ->handled_component jakub at gcc dot gnu.org 2013-09-12 10:43 ` [Bug tree-optimization/58404] " rguenth at gcc dot gnu.org 2013-09-12 13:20 ` rguenth at gcc dot gnu.org @ 2013-09-12 13:20 ` rguenth at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2013-09-12 13:20 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58404 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Thu Sep 12 13:20:17 2013 New Revision: 202525 URL: http://gcc.gnu.org/viewcvs?rev=202525&root=gcc&view=rev Log: 2013-09-12 Richard Biener <rguenther@suse.de> PR tree-optimization/58404 * tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Also propagate non-invariant addresses into dereferences wrapped in component references. * g++.dg/tree-ssa/pr58404.C: New testcase. Added: trunk/gcc/testsuite/g++.dg/tree-ssa/pr58404.C Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-forwprop.c ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-09-12 13:20 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-09-12 10:42 [Bug tree-optimization/58404] New: &noninvariant_address not forwproped into ->handled_component jakub at gcc dot gnu.org 2013-09-12 10:43 ` [Bug tree-optimization/58404] " rguenth at gcc dot gnu.org 2013-09-12 13:20 ` rguenth at gcc dot gnu.org 2013-09-12 13:20 ` rguenth at gcc dot gnu.org
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