Lesson1_C.asm - Texas Instruments TMS320C6000 Programmer's Manual

Example 2–7. lesson1_c.asm
;*––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––*
;* SOFTWARE PIPELINE INFORMATION
;*
;* Known Minimum Trip Count
;* Known Max Trip Count Factor
;* Loop Carried Dependency Bound(^) : 0
;* Unpartitioned Resource Bound
;* Partitioned Resource Bound(*)
;* Resource Partition:
;*
;* .L units
;* .S units
;* .D units
;* .M units
;* .X cross paths
;* .T address paths
;* Long read paths
;* Long write paths
;* Logical
;* Addition ops (.LSD)
;* Bound(.L .S .LS)
;* Bound(.L .S .D .LS .LSD)
;*
;* Searching for software pipeline schedule at ...
;* ii = 2
;* done
;*
;* Collapsed epilog stages
;* Prolog not entirely removed
;* Collapsed prolog stages
;*
;* Minimum required memory pad : 8 bytes
;*
;* Minimum safe trip count
;*
;*––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––*
;* SINGLE SCHEDULED ITERATION
;*
;* C17:
;* LDH
;* || LDH
;* NOP
;* [ B0] SUB
;* [ B0] B
;* MPY
;* || MPY
;* NOP
;* ADD
;*––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––*
A–side
ops (.LS)
Schedule found with 5 iterations in parallel
.D1T1 *A0++,A4
.D2T2 *B4++,B6
2
.L2 B0,1,B0
.S2 C17
.M1 A4,A5,A3
.M2 B6,B5,B7
1
.L1X B7,A3,A3
Lesson 2: Balancing Resources With Dual-Data Paths
: 1
: 1
: 2
: 2
B–side
0 0
1 1
2* 1
1 1
1 0
2* 1
1 0
0 0
1 0 (.L or .S unit)
0 1 (.L or .S or .D unit)
1 1
2* 1
: 4
: 2
: 1
; |32|
; |32|
; |33|
; |33|
; |32|
; |32|
; |32|
Compiler Optimization Tutorial 2-13