Displaying 1 result from an estimated 1 matches for "sdotv8i8".
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udotv8i8
2019 Sep 10
2
tablegen exponential behavior
...(mulBz<ldop> GPR64sp:$Rn, GPR64sp:$Rm))))),
(EXTRACT_SUBREG
(i64 (DOT (DUPv2i32gpr WZR),
(v8i8 (LD1Onev8b GPR64sp:$Rn)),
(v8i8 (LD1Onev8b GPR64sp:$Rm)))),
sub_32)>, Requires<[HasDotProd]>;
def : DotProductI32<SDOTv8i8, sextloadi8>;
def : DotProductI32<UDOTv8i8, zextloadi8>;
Then when I extended it to 8 element vectors, the time spent by tblgen exploded:
from under 7 seconds (on A-72) on the AArch64 td files and the above patch
to more than half an hour when I decided to terminate the processes.
Here...