Modulo Iteration Interval Table For Weighted Vector Sum (2-Cycle Loop) - Texas Instruments TMS320C6000 Programmer's Manual

Table 6–14. Modulo Iteration Interval Table for Weighted Vector Sum (2-Cycle Loop)
Unit/Cycle 0
.D1
LDW ai_i+1
.D2
LDW bi_i+1
.M1
.M2
.L1
.L2
.S1
.S2
1X
2X
Unit/Cycle 1
.D1
.D2
.M1
.M2
.L1
.L2
.S1
.S2
1X
2X
Note: The asterisks indicate the iteration of the loop; shading indicates changes in scheduling from Table 6–13.
2 4
* **
LDW ai_i+1 LDW ai_i+1
* **
LDW bi_i+1 LDW bi_i+1
3 5
MPY pi
MPYHL pi+1
MPY pi
MPYHL pi+1
Optimizing Assembly Code via Linear Assembly
Modulo Scheduling of Multicycle Loops
6 8
*** ****
LDW ai_i+1 LDW ai_i+1
*** ****
LDW bi_i+1 LDW bi_i+1
ADD ci
*
AND bi AND bi
*
SHR bi+1 SHR bi+1
7 9
* **
MPY pi MPY pi
* **
MPYHL pi+1 MPYHL pi+1
*
SHR pi_s SHR pi_s
*
SHR pi+1_s SHR pi+1_s
* **
MPY pi MPY pi
* **
MPYHL pi+1 MPYHL pi+1
10
*****
LDW ai_i+1
*****
LDW bi_i+1
*
ADD ci
**
AND bi
**
SHR bi+1
11
***
MPY pi
***
MPYHL pi+1
**
SHR pi_s
**
SHR pi+1_s
***
MPY pi
***
MPYHL pi+1
6-69