在 2024/3/9 上午9:48, chenglulu 写道:
Pushed to r14-9407.
Cherry picked to r13-8413 and r12-10200.
在 2024/3/7 上午9:12, Lulu Cheng 写道:
If the hardware does not support LAMCAS, atomic_compare_and_swapsi
needs to be
implemented through "ll.w+sc.w". In the implementation of the
instruction
Pushed to r14-9407.
在 2024/3/7 上午9:12, Lulu Cheng 写道:
If the hardware does not support LAMCAS, atomic_compare_and_swapsi needs to be
implemented through "ll.w+sc.w". In the implementation of the instruction
sequence,
it is necessary to determine whether the two registers are equal.
Since
在 2024/3/8 下午2:22, Xi Ruoyao 写道:
On Thu, 2024-03-07 at 21:07 +0800, chenglulu wrote:
在 2024/3/7 下午8:52, Xi Ruoyao 写道:
It should be better to extend the expected value before the ll/sc loop
(like what LLVM does), instead of repeating the extending in each
iteration. Something like:
I wanted
On Thu, 2024-03-07 at 21:07 +0800, chenglulu wrote:
>
> 在 2024/3/7 下午8:52, Xi Ruoyao 写道:
> > It should be better to extend the expected value before the ll/sc loop
> > (like what LLVM does), instead of repeating the extending in each
> > iteration. Something like:
>
> I wanted to do this at
在 2024/3/7 下午8:52, Xi Ruoyao 写道:
It should be better to extend the expected value before the ll/sc loop
(like what LLVM does), instead of repeating the extending in each
iteration. Something like:
I wanted to do this at first, but it didn't work out.
But then I thought about it, and there
On Thu, 2024-03-07 at 09:12 +0800, Lulu Cheng wrote:
> + output_asm_insn ("1:", operands);
> + output_asm_insn ("ll.\t%0,%1", operands);
> +
> + /* Like the test case atomic-cas-int.C, in loongarch64, O1 and higher, the
> + return value of the val_without_const_folding will not be
If the hardware does not support LAMCAS, atomic_compare_and_swapsi needs to be
implemented through "ll.w+sc.w". In the implementation of the instruction
sequence,
it is necessary to determine whether the two registers are equal.
Since LoongArch's comparison instructions do not distinguish between
