On Tue, 2024-12-17 at 12:52 +0800, Lulu Cheng wrote:
>
> 在 2024/12/17 下午12:30, Xi Ruoyao 写道:
> > On Tue, 2024-12-17 at 11:27 +0800, Lulu Cheng wrote:
> > > 在 2024/12/16 下午9:20, Xi Ruoyao 写道:
> > > /* snip */
> > > > +;; For HImode it's a little complicated...
> > > > +(define_expand "rbithi"
> > >
在 2024/12/17 下午12:30, Xi Ruoyao 写道:
On Tue, 2024-12-17 at 11:27 +0800, Lulu Cheng wrote:
在 2024/12/16 下午9:20, Xi Ruoyao 写道:
/* snip */
+;; For HImode it's a little complicated...
+(define_expand "rbithi"
I didn't find rtithi's template description. Are there any test cases
?
No, it's not a
On Tue, 2024-12-17 at 11:27 +0800, Lulu Cheng wrote:
> 在 2024/12/16 下午9:20, Xi Ruoyao 写道:
> /* snip */
> > +;; For HImode it's a little complicated...
> > +(define_expand "rbithi"
> I didn't find rtithi's template description. Are there any test cases
> ?
No, it's not a standard name. I just used
在 2024/12/16 下午9:20, Xi Ruoyao 写道:
/* snip */
+;; For HImode it's a little complicated...
+(define_expand "rbithi"
I didn't find rtithi's template description. Are there any test cases ?
+ [(match_operand:HI 0 "register_operand")
+ (match_operand:HI 1 "register_operand")]
+ ""
+ {
+r
LoongArch supports native bit reverse operation for QI, SI, DI, and for
HI we can expand it into a shift and a bit reverse in word_mode.
I was reluctant to add them because until PR50481 is fixed these
operations will be just useless. But now it turns out we can use them
to optimize the bit rever
