Hi,
The code below the dot line is from spru732j.pdf, page 517/686. I do not understand the red comments.LOOP1 is a
single EP, 8 instructions. Why does it have PW and PG phases there? And PR, PS are in the next EP?
..............................
Example 4-1. Execute Packet in
Figure 4-7
SADD .L1 A2,A7,A2 ; E1 Phase
|| SADD .L2 B2,B7,B2
|| SMPYH .M2X B3,A3,B2
|| SMPY .M1X B3,A3,A2
|| B .S1 LOOP1
|| MVK .S2 117,B1
LDW .D2 *B4++,B3 ; DC Phase
|| LDW .D1 *A4++,A3
|| MV .L2X A1,B0
|| SMPYH .M1 A2,A2,A0
|| SMPYH .M2 B2,B2,B10
|| SHR .S1 A2,16,A5
|| SHR .S2 B2,16,B5
LOOP1:
STH .D1 A5,*A8++[2] ; DP, PW, and PG Phases
|| STH .D2 B5,*B8++[2]
|| SADD .L1 A2,A7.A2
|| SADD .L2 B2,B7,B2
|| SMPYH .M2X B3,A3,B2
|| SMPY .M1X B3,A3,A2
|| [B1] B .S1 LOOP1
|| [B1] SUB .S2 B1,1,B1
LDW .D2 *B4++,B3 ; PR and PS Phases
|| LDW .D1 *A4++,A3
|| SADD .L1 A0,A1,A1
|| SADD .L2 B10,B0,B0
|| SMPYH .M1 A2,A2,A0
|| SMPYH .M2 B2,B2,B10
|| SHR .S1 A2,16,A5
|| SHR .S2 B2,16,B5
