When reworking the testsuite setup for AVR, I have stepped of the following
missed optimization:
The avr target does fail for the following test case
(gcc.c-torture/execute/20020720-1.c) with reporting a link error:
Question: After filing this bug report should I post a patch marking the test
case as "xfail" ?
/* Copyright (C) 2002 Free Software Foundation.
Ensure that fabs(x) < 0.0 optimization is working.
Written by Roger Sayle, 20th July 2002. */
extern void abort (void);
extern double fabs (double);
extern void link_error (void);
void
foo (double x)
{
double p, q;
p = fabs (x);
q = 0.0;
if (p < q)
link_error ();
}
int
main()
{
foo (1.0);
return 0;
}
#ifndef __OPTIMIZE__
void
link_error ()
{
abort ();
}
#endif
--
Summary: Missed optimization
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bjoern dot m dot haase at web dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-linux
GCC host triplet: i686-linux
GCC target triplet: avr-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21077
