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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
--- 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
* [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
end of thread, other threads:[~2013-09-12 13:20 UTC | newest]
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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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