search for: ld_d_enc

Hello, I'm trying to define in my new back end, in MyBackendInstrInfo.td file, a vector load instruction that takes an immediate address operand. (I got inspired from Mips' MSA SIMD extensions.) Could you please tell me what's the right way to do it? Here, the load class has $addrsrc which is a relative address with base a certain register and offset: class

Hi Alex, So far, the code you've mentioned only defines a couple tablegen classes but doesn't define the instruction itself. To define the instruction you will also need a 'def' statement. For MIPS MSA, this statement looks like this: def LD_D: LD_D_ENC, LD_D_DESC; This defines an instruction (LD_D) with the encoding specified by the LD_D_ENC class, and the operation description (including assembly syntax) specified by the LD_D_DESC class. You'll sometimes find 'adjectives' like ISA_MIPS2 which specify the version of the MIPS architect...