[Bug middle-end/23295] New: fold does not simplify -a - (5) to (-5) - a
pinskia at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Tue Aug 9 03:12:00 GMT 2005
Take the following function:
int f(int a, int c)
{
return -a - (5);
}
Fold should have converted that to:
int f(int a, int c)
{
return (-5) - a;
}
So that we only have one constant (-5) and one decl (a) and one expression (MINUS_EXPR) instead
of one constant (5), one decl (a) and two expressions (MINUS_EXPR and NEG_EXPR).
--
Summary: fold does not simplify -a - (5) to (-5) - a
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: missed-optimization, TREE
Severity: enhancement
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23295
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