On Wed, 2023-10-18 at 09:34 +0800, chenglulu wrote:
>
> 在 2023/10/17 下午10:24, WANG Xuerui 写道:
> >
> > On 10/17/23 22:06, Xi Ruoyao wrote:
> > > During the review of a LLVM change [1], on LA464 we found that zeroing
> > "an" LLVM change (because the word LLVM is pronounced letter-by-letter)
> > >
在 2023/10/17 下午10:24, WANG Xuerui 写道:
On 10/17/23 22:06, Xi Ruoyao wrote:
During the review of a LLVM change [1], on LA464 we found that zeroing
"an" LLVM change (because the word LLVM is pronounced letter-by-letter)
a fcc with fcmp.caf.s is much faster than a movgr2cf from $r0.
On 10/17/23 22:06, Xi Ruoyao wrote:
During the review of a LLVM change [1], on LA464 we found that zeroing
"an" LLVM change (because the word LLVM is pronounced letter-by-letter)
a fcc with fcmp.caf.s is much faster than a movgr2cf from $r0.
Similarly, "an" fcc
[1]:
During the review of a LLVM change [1], on LA464 we found that zeroing
a fcc with fcmp.caf.s is much faster than a movgr2cf from $r0.
[1]: https://github.com/llvm/llvm-project/pull/69300
gcc/ChangeLog:
* config/loongarch/loongarch.md (movfcc): Use fcmp.caf.s for
zeroing a fcc.
