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Assembly error with 128-bit Register Quadruplet

CHIP Smarter
Prodigy 125 points

Hi,

The following is a portion of my assembly code:

.asg  B16,  B16_12

.asg  B17,  B17_34

.asg  B18,  B18_56

.asg  B19,  B19_78

.asg  B20,  B20_11

.asg  B21,  B21_11

.asg  B22,  B22_11

.asg  B23,  B23_11

......

DDOTP4H  .M2  B19_78:B18_56:B17_34:B16_12, B23_11:B22_11:B21_11:B20_11, B27_d2:B26_d1

......

But "Assembly Error" says:

Unexpected trailing operand(s)       DDOTP4H  .M2  B19_78:B18_56:B17_34:B16_12, B23_11:B22_11:B21_11:B20_11, B27_d2:B26_d1

After symbol substitution the line became:       DDOTP4H  .M2  B19_78B18B17_34:B16_12, B23_11B22B21_11:B20_11, B27_d2:B26_d1

 

Why?

My environment is C6678 simulator on CCS 5.4.

Is there any problem in this code, or it's a bug of Assembler?

 

Thanks!

  • 0
    TI__Guru* 81335 points

    Hi,

    We have moved your post to Compiler forum for correct response.

    Thanks.

  • 0
    TI__Guru* 84225 points

    The short answer is that the syntax :x: where x is defined with ".asg" is the forced substitution operator.  This consumes the colons and drops the definition of x where the forced substitution operator occured.

    Use .set instead:

    B16_12    .set  B16
B17_34    .set  B17
B18_56    .set  B18
B19_78    .set  B19
B20_11    .set  B20
B21_11    .set  B21
B22_11    .set  B22
B23_11    .set  B23
B26_d1    .set  B26
B27_d2    .set  B27

    DDOTP4H  .M2  B19_78:B18_56:B17_34:B16_12, B23_11:B22_11:B21_11:B20_11, B27_d2:B26_d1