[LLVMdev] Regular Expressions

[Aaron Gray]

> On Tuesday 16 June 2009 19:35, David Greene wrote:
>
>> So which is more intuitive and less error-prone?
>>
>> defm BLENDPS  : sse41_avx_fp_binary_vector_osta_vintrinsic_rmi_rrmi<0x0C,
>>                   i32i8imm, "blend", "blend", "f32", 4>;
>>
>> or
>>
>> defm BLENDPS  : sse41_avx_fp_binary_vector_osta_vintrinsic_rmi_rrmi<0x0C,
>>                   i32i8imm, "blendps", "blendps">;
>
> Here's another option:
>
> defm BLENDPS  : sse41_avx_fp_binary_vector_osta_vintrinsic_rmi_rrmi<0x0C,
>                   i32i8imm, "blendps", "blendps", v4f32, v8f32>;
>
> This is somewhere between the first and second options.  It's not as
> convenient as the second but is more intuitive than the first.  Still,
> looking at some random individual instruction, it wouldn't be immediately
> clear to me what those multiple types mean.  I might think they're source
> and destination types, for example.

Named parameters might be a possible solution. Again maybe it might be too 
verbose.

Aaron