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From: "syq at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/111376] missed optimization of one bit test on MIPS32r1
Date: Tue, 04 Jun 2024 06:55:05 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111376

--- Comment #1 from YunQiang Su <syq at gcc dot gnu.org> ---
RISC-V has this problem, too.
Maybe we can try to combine it in `combine` pass, while it may be not easy.
It may break some code like:

```
int f1();
int f2();

int f(int a) {
        int p =3D (a & 0x80000);
        if (p)
                return p;
        else
                return f2();
}
```

And in fact your patch also break it.=