| Message ID | 20211110122015.189655-1-richard.henderson@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | tcg: Document ctpop opcodes | expand |
On 11/10/21 13:20, Richard Henderson wrote: > Fixes: a768e4e99247 > Resolves: https://gitlab.com/qemu-project/qemu/-/issues/658 > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > tcg/README | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/tcg/README b/tcg/README > index c2e7762a37..391f4d1e80 100644 > --- a/tcg/README > +++ b/tcg/README > @@ -254,6 +254,12 @@ t0 = t1 ? clz(t1) : t2 > > t0 = t1 ? ctz(t1) : t2 > > +* ctpop_i32/i64 t0, t1 > + > +t0 = number of bits set in t1 > +With "ctpop" short for "count popultation", matching Typo "population". > +the function name used in include/qemu/host-utils.h. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
diff --git a/tcg/README b/tcg/README index c2e7762a37..391f4d1e80 100644 --- a/tcg/README +++ b/tcg/README @@ -254,6 +254,12 @@ t0 = t1 ? clz(t1) : t2 t0 = t1 ? ctz(t1) : t2 +* ctpop_i32/i64 t0, t1 + +t0 = number of bits set in t1 +With "ctpop" short for "count popultation", matching +the function name used in include/qemu/host-utils.h. + ********* Shifts/Rotates * shl_i32/i64 t0, t1, t2
Fixes: a768e4e99247 Resolves: https://gitlab.com/qemu-project/qemu/-/issues/658 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- tcg/README | 6 ++++++ 1 file changed, 6 insertions(+)