Originally, this field was intended for determining if the given
instruction acted per-component or if it had mismatching source and
destination sizes that would have to be interpreted specially. However, we
can easily derive this from output_size == 0, so it's not really that
useful. Also, the values we were setting in nir_opcodes.h for this field
were completely bogus and it was never used.
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit adds some algebraic properties to the metadata of each opcode
in NIR. In particular, you now know, just from the metadata, if a given
opcode is commutative or associative. This will be useful for algebraic
transformation passes that want to be able to match a + b as well as b + a
in one go.
v2: Make algebraic properties all caps. This was more consistent with the
intrinsics flags and seems better for flags in general.
Also, the enums are now declared with (1 << n) rather then hex values.
v3: fmin and fmax technically aren't commutative or associative. Things
get funny when one of the arguments is a NaN.
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This includes all the instructions, ifs, loops, functions, etc. This is
similar to the information in ir.h.
v2: Jason Ekstrand <jason.ekstrand@intel.com>:
Include ralloc and hash_table from the util directory
whitespace fixes
Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-By glenn.kennard <glenn.kennard@gmail.com>
