On Sun, 2022-11-06 at 09:46 +0800, Lulu Cheng wrote:
> I think it should be here:
>
> if (!increment && !decrement)
> continue;
>
> + if ((increment && rhs == HOST_WIDE_INT_MAX)
> + || (decrement && rhs == HOST_WIDE_INT_MIN))
> +
在 2022/11/4 下午2:39, Xi Ruoyao 写道:
Signed overflow is an undefined behavior, so we need to prevent it from
happening, instead of "checking" the result.
gcc/ChangeLog:
* config/loongarch/loongarch.cc (loongarch_emit_int_compare):
Avoid signed overflow.
---
Bootstrapped and regt
Signed overflow is an undefined behavior, so we need to prevent it from
happening, instead of "checking" the result.
gcc/ChangeLog:
* config/loongarch/loongarch.cc (loongarch_emit_int_compare):
Avoid signed overflow.
---
Bootstrapped and regtested on loongarch64-linux-gnu. OK fo
