Displaying 1 result from an estimated 1 matches for "intsance".
Did you mean:
instance
2019 Aug 14
3
[RFC][RISCV] Selection of complex codegen patterns into RISCV bit manipulation instructions
...i32 %0, %neg
just in case the user wants such optimization but is not aware of all
the bits that can be optimized.
I'm dealing with the fact that it is pretty hard to select some patterns
of DAG nodes in order to replace them with an optimal machine equivalent
machine instruction.
Take for intsance the count leading zeros operation:
uint32_t clz (uint32_t x)
{
for (int count = 0; count < 32; count++ ) {
if ((x << count) < 0)
return count;
}
return 32;
}
It needs a loop to be performed and that makes it diff...