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[Bug tree-optimization/42906] New: [4.5 Regression] Empty loop not removed
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Jan 2010 16:06:09 -0000
- Subject: [Bug tree-optimization/42906] New: [4.5 Regression] Empty loop not removed
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
The empty loop in the following testcase is not removed by CD-DCE but by
the empty loop removal pass in 4.4.
int foo (int b, int j)
{
if (b)
{
int i;
for (i = 0; i<1000; ++i)
;
j = 0;
}
return j;
}
--
Summary: [4.5 Regression] Empty loop not removed
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rguenth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42906