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[Bug tree-optimization/34099] [4.3 Regression] optimizer problem
- 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: 15 Nov 2007 10:21:31 -0000
- Subject: [Bug tree-optimization/34099] [4.3 Regression] optimizer problem
- References: <bug-34099-3137@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from rguenth at gcc dot gnu dot org 2007-11-15 10:21 -------
Confirmed. Shorter testcase:
#include <complex>
#include <iostream>
typedef std::complex<double> NumType;
void
multiply(NumType a, NumType b, unsigned ac, NumType &ab)
{
NumType s;
for (unsigned j=0; j<ac; j++)
s = a * b;
ab = s;
}
int main()
{
NumType a(1,2), b(3,-2), c;
multiply(a, b, 1, c);
std::cout << c << std::endl;
return 0;
}
Looks like another SRA problem.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Component|c++ |tree-optimization
Ever Confirmed|0 |1
Keywords| |wrong-code
Known to fail| |4.3.0
Known to work| |4.2.2
Last reconfirmed|0000-00-00 00:00:00 |2007-11-15 10:21:31
date| |
Summary|optimizer problem |[4.3 Regression] optimizer
| |problem
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34099