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[Bug rtl-optimization/19055] Minor bit optimization with or and xor
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 17 Dec 2004 14:25:45 -0000
- Subject: [Bug rtl-optimization/19055] Minor bit optimization with or and xor
- References: <20041217141606.19055.pinskia@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-17 14:25 -------
Another example where we don't get the optimization and f1 is still one instruction (on 32bit PPC):
int f(int a,int b)
{
a|=b;
a^=b;
return a;
}
int f1(int a,int b)
{
return a&=~b;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19055