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* [Bug middle-end/48592] New: alloca () calls are not DCEd
@ 2011-04-13 13:25 rguenth at gcc dot gnu.org
2011-04-13 13:25 ` [Bug middle-end/48592] " rguenth at gcc dot gnu.org
2013-10-21 3:26 ` glisse at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-04-13 13:25 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48592
Summary: alloca () calls are not DCEd
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: rguenth@gcc.gnu.org
We should DCE alloca () calls. Testcase:
void foo (int i)
{
int a[i];
}
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug middle-end/48592] alloca () calls are not DCEd 2011-04-13 13:25 [Bug middle-end/48592] New: alloca () calls are not DCEd rguenth at gcc dot gnu.org @ 2011-04-13 13:25 ` rguenth at gcc dot gnu.org 2013-10-21 3:26 ` glisse at gcc dot gnu.org 1 sibling, 0 replies; 3+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-04-13 13:25 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48592 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Keywords| |missed-optimization Last reconfirmed| |2011.04.13 13:25:42 AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org |gnu.org | Ever Confirmed|0 |1 Severity|normal |enhancement --- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-04-13 13:25:42 UTC --- Very simple, mine. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug middle-end/48592] alloca () calls are not DCEd 2011-04-13 13:25 [Bug middle-end/48592] New: alloca () calls are not DCEd rguenth at gcc dot gnu.org 2011-04-13 13:25 ` [Bug middle-end/48592] " rguenth at gcc dot gnu.org @ 2013-10-21 3:26 ` glisse at gcc dot gnu.org 1 sibling, 0 replies; 3+ messages in thread From: glisse at gcc dot gnu.org @ 2013-10-21 3:26 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48592 Marc Glisse <glisse at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED CC| |glisse at gcc dot gnu.org Resolution|--- |FIXED --- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> --- We currently produce this .optimized: foo (int i) { void * saved_stack.2; <bb 2>: saved_stack.2_3 = 0B; GIMPLE_NOP return; } (and RTL finishes the cleanup) cddce1 removes alloca fab1 removes the stack save/restore So I'm going to mark this as fixed. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2013-10-21 3:26 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-04-13 13:25 [Bug middle-end/48592] New: alloca () calls are not DCEd rguenth at gcc dot gnu.org 2011-04-13 13:25 ` [Bug middle-end/48592] " rguenth at gcc dot gnu.org 2013-10-21 3:26 ` glisse at gcc dot gnu.org
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