2019-11-17 00:51:42 +00:00
|
|
|
Setting inferred volatile on symbol affected by address-of (byte*) idx_p ← &(byte) idx
|
|
|
|
Identified constant variable (byte*) idx_p
|
2019-09-26 12:53:33 +00:00
|
|
|
Culled Empty Block (label) main::@2
|
|
|
|
|
|
|
|
CONTROL FLOW GRAPH SSA
|
|
|
|
@begin: scope:[] from
|
|
|
|
to:@1
|
|
|
|
|
|
|
|
(void()) main()
|
|
|
|
main: scope:[main] from @1
|
|
|
|
(byte) main::i#0 ← (byte) 0
|
|
|
|
to:main::@1
|
|
|
|
main::@1: scope:[main] from main main::@1
|
|
|
|
(byte) main::i#2 ← phi( main/(byte) main::i#0 main::@1/(byte) main::i#1 )
|
2019-11-17 00:51:42 +00:00
|
|
|
*((const byte*) SCREEN + (byte) main::i#2) ← *((const byte*) idx_p)
|
|
|
|
*((const byte*) idx_p) ← *((const byte*) idx_p) + (byte) main::i#2
|
2019-09-26 12:53:33 +00:00
|
|
|
(byte) main::i#1 ← (byte) main::i#2 + rangenext(0,5)
|
|
|
|
(bool~) main::$0 ← (byte) main::i#1 != rangelast(0,5)
|
|
|
|
if((bool~) main::$0) goto main::@1
|
|
|
|
to:main::@return
|
|
|
|
main::@return: scope:[main] from main::@1
|
|
|
|
return
|
|
|
|
to:@return
|
|
|
|
@1: scope:[] from @begin
|
|
|
|
call main
|
|
|
|
to:@2
|
|
|
|
@2: scope:[] from @1
|
|
|
|
to:@end
|
|
|
|
@end: scope:[] from @2
|
|
|
|
|
|
|
|
SYMBOL TABLE SSA
|
|
|
|
(label) @1
|
|
|
|
(label) @2
|
|
|
|
(label) @begin
|
|
|
|
(label) @end
|
2019-11-03 16:05:55 +00:00
|
|
|
(const byte*) SCREEN = (byte*)(number) $400
|
2020-01-11 13:55:27 +00:00
|
|
|
(byte) idx loadstore = (byte) 0
|
2019-11-17 00:51:42 +00:00
|
|
|
(const byte*) idx_p = &(byte) idx
|
2019-09-26 12:53:33 +00:00
|
|
|
(void()) main()
|
|
|
|
(bool~) main::$0
|
|
|
|
(label) main::@1
|
|
|
|
(label) main::@return
|
|
|
|
(byte) main::i
|
|
|
|
(byte) main::i#0
|
|
|
|
(byte) main::i#1
|
|
|
|
(byte) main::i#2
|
|
|
|
|
|
|
|
Simplifying constant pointer cast (byte*) 1024
|
|
|
|
Successful SSA optimization PassNCastSimplification
|
2020-01-11 13:55:27 +00:00
|
|
|
Simple Condition (bool~) main::$0 [6] if((byte) main::i#1!=rangelast(0,5)) goto main::@1
|
2019-09-26 12:53:33 +00:00
|
|
|
Successful SSA optimization Pass2ConditionalJumpSimplification
|
|
|
|
Constant (const byte) main::i#0 = 0
|
|
|
|
Successful SSA optimization Pass2ConstantIdentification
|
2020-01-11 13:55:27 +00:00
|
|
|
Resolved ranged next value [4] main::i#1 ← ++ main::i#2 to ++
|
|
|
|
Resolved ranged comparison value [6] if(main::i#1!=rangelast(0,5)) goto main::@1 to (number) 6
|
2019-09-26 12:53:33 +00:00
|
|
|
Adding number conversion cast (unumber) 6 in if((byte) main::i#1!=(number) 6) goto main::@1
|
|
|
|
Successful SSA optimization PassNAddNumberTypeConversions
|
|
|
|
Simplifying constant integer cast 6
|
|
|
|
Successful SSA optimization PassNCastSimplification
|
|
|
|
Finalized unsigned number type (byte) 6
|
|
|
|
Successful SSA optimization PassNFinalizeNumberTypeConversions
|
|
|
|
Inlining constant with var siblings (const byte) main::i#0
|
|
|
|
Constant inlined main::i#0 = (byte) 0
|
|
|
|
Successful SSA optimization Pass2ConstantInlining
|
|
|
|
Added new block during phi lifting main::@3(between main::@1 and main::@1)
|
2020-01-11 13:55:27 +00:00
|
|
|
Adding NOP phi() at start of @begin
|
2019-09-26 12:53:33 +00:00
|
|
|
Adding NOP phi() at start of @1
|
|
|
|
Adding NOP phi() at start of @2
|
|
|
|
Adding NOP phi() at start of @end
|
|
|
|
Adding NOP phi() at start of main
|
|
|
|
CALL GRAPH
|
2019-09-30 21:57:27 +00:00
|
|
|
Calls in [] to main:2
|
2019-09-26 12:53:33 +00:00
|
|
|
|
|
|
|
Created 1 initial phi equivalence classes
|
2019-09-30 21:57:27 +00:00
|
|
|
Coalesced [12] main::i#3 ← main::i#1
|
2019-09-26 12:53:33 +00:00
|
|
|
Coalesced down to 1 phi equivalence classes
|
|
|
|
Culled Empty Block (label) @2
|
|
|
|
Culled Empty Block (label) main::@3
|
2020-01-11 13:55:27 +00:00
|
|
|
Adding NOP phi() at start of @begin
|
2019-09-26 12:53:33 +00:00
|
|
|
Adding NOP phi() at start of @1
|
|
|
|
Adding NOP phi() at start of @end
|
|
|
|
Adding NOP phi() at start of main
|
|
|
|
|
|
|
|
FINAL CONTROL FLOW GRAPH
|
|
|
|
@begin: scope:[] from
|
2020-01-11 13:55:27 +00:00
|
|
|
[0] phi()
|
2019-09-26 12:53:33 +00:00
|
|
|
to:@1
|
|
|
|
@1: scope:[] from @begin
|
2019-09-30 21:57:27 +00:00
|
|
|
[1] phi()
|
|
|
|
[2] call main
|
2019-09-26 12:53:33 +00:00
|
|
|
to:@end
|
|
|
|
@end: scope:[] from @1
|
2019-09-30 21:57:27 +00:00
|
|
|
[3] phi()
|
2019-09-26 12:53:33 +00:00
|
|
|
|
|
|
|
(void()) main()
|
|
|
|
main: scope:[main] from @1
|
2019-09-30 21:57:27 +00:00
|
|
|
[4] phi()
|
2019-09-26 12:53:33 +00:00
|
|
|
to:main::@1
|
|
|
|
main::@1: scope:[main] from main main::@1
|
2019-09-30 21:57:27 +00:00
|
|
|
[5] (byte) main::i#2 ← phi( main/(byte) 0 main::@1/(byte) main::i#1 )
|
2019-11-17 00:51:42 +00:00
|
|
|
[6] *((const byte*) SCREEN + (byte) main::i#2) ← *((const byte*) idx_p)
|
|
|
|
[7] *((const byte*) idx_p) ← *((const byte*) idx_p) + (byte) main::i#2
|
2019-09-30 21:57:27 +00:00
|
|
|
[8] (byte) main::i#1 ← ++ (byte) main::i#2
|
|
|
|
[9] if((byte) main::i#1!=(byte) 6) goto main::@1
|
2019-09-26 12:53:33 +00:00
|
|
|
to:main::@return
|
|
|
|
main::@return: scope:[main] from main::@1
|
2019-09-30 21:57:27 +00:00
|
|
|
[10] return
|
2019-09-26 12:53:33 +00:00
|
|
|
to:@return
|
|
|
|
|
|
|
|
|
|
|
|
VARIABLE REGISTER WEIGHTS
|
2020-01-11 13:55:27 +00:00
|
|
|
(byte) idx loadstore = (byte) 0
|
2019-09-26 12:53:33 +00:00
|
|
|
(void()) main()
|
|
|
|
(byte) main::i
|
|
|
|
(byte) main::i#1 16.5
|
|
|
|
(byte) main::i#2 14.666666666666666
|
|
|
|
|
|
|
|
Initial phi equivalence classes
|
|
|
|
[ main::i#2 main::i#1 ]
|
2019-12-08 15:04:35 +00:00
|
|
|
Added variable idx to live range equivalence class [ idx ]
|
2019-09-26 12:53:33 +00:00
|
|
|
Complete equivalence classes
|
|
|
|
[ main::i#2 main::i#1 ]
|
2019-09-30 21:57:27 +00:00
|
|
|
[ idx ]
|
2019-10-12 09:40:36 +00:00
|
|
|
Allocated zp[1]:2 [ main::i#2 main::i#1 ]
|
2019-10-20 11:21:04 +00:00
|
|
|
Allocated mem[1] [ idx ]
|
2019-09-26 12:53:33 +00:00
|
|
|
|
|
|
|
INITIAL ASM
|
|
|
|
Target platform is c64basic / MOS6502X
|
|
|
|
// File Comments
|
|
|
|
// Test declaring a variable as "memory", meaning it will be stored in memory and accessed through an implicit pointer (using load/store)
|
2019-09-26 13:05:50 +00:00
|
|
|
// Test a pointer to a memory variable
|
2019-09-26 12:53:33 +00:00
|
|
|
// Upstart
|
|
|
|
.pc = $801 "Basic"
|
2019-09-29 21:13:37 +00:00
|
|
|
:BasicUpstart(__bbegin)
|
2019-09-26 12:53:33 +00:00
|
|
|
.pc = $80d "Program"
|
|
|
|
// Global Constants & labels
|
|
|
|
.label SCREEN = $400
|
2019-11-03 16:05:55 +00:00
|
|
|
.label idx_p = idx
|
2019-09-26 12:53:33 +00:00
|
|
|
// @begin
|
2019-09-29 21:13:37 +00:00
|
|
|
__bbegin:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1_from___bbegin:
|
|
|
|
jmp __b1
|
2019-09-26 12:53:33 +00:00
|
|
|
// @1
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [2] call main
|
|
|
|
// [4] phi from @1 to main [phi:@1->main]
|
2019-09-29 21:13:37 +00:00
|
|
|
main_from___b1:
|
2019-09-26 12:53:33 +00:00
|
|
|
jsr main
|
2019-09-30 21:57:27 +00:00
|
|
|
// [3] phi from @1 to @end [phi:@1->@end]
|
2019-09-29 21:13:37 +00:00
|
|
|
__bend_from___b1:
|
|
|
|
jmp __bend
|
2019-09-26 12:53:33 +00:00
|
|
|
// @end
|
2019-09-29 21:13:37 +00:00
|
|
|
__bend:
|
2019-09-26 12:53:33 +00:00
|
|
|
// main
|
|
|
|
main: {
|
|
|
|
.label i = 2
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi from main to main::@1 [phi:main->main::@1]
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1_from_main:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
|
2019-09-26 12:53:33 +00:00
|
|
|
lda #0
|
|
|
|
sta.z i
|
2019-09-29 21:13:37 +00:00
|
|
|
jmp __b1
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1_from___b1:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@1->main::@1#0] -- register_copy
|
2019-09-29 21:13:37 +00:00
|
|
|
jmp __b1
|
2019-09-26 12:53:33 +00:00
|
|
|
// main::@1
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1:
|
2019-11-17 00:51:42 +00:00
|
|
|
// [6] *((const byte*) SCREEN + (byte) main::i#2) ← *((const byte*) idx_p) -- pbuc1_derefidx_vbuz1=_deref_pbuc2
|
2019-09-30 21:57:27 +00:00
|
|
|
lda idx_p
|
|
|
|
ldy.z i
|
|
|
|
sta SCREEN,y
|
2019-11-17 00:51:42 +00:00
|
|
|
// [7] *((const byte*) idx_p) ← *((const byte*) idx_p) + (byte) main::i#2 -- _deref_pbuc1=_deref_pbuc1_plus_vbuz1
|
2019-09-30 21:57:27 +00:00
|
|
|
lda idx_p
|
2019-09-26 12:53:33 +00:00
|
|
|
clc
|
2019-09-30 21:57:27 +00:00
|
|
|
adc.z i
|
|
|
|
sta idx_p
|
|
|
|
// [8] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1
|
2019-09-26 12:53:33 +00:00
|
|
|
inc.z i
|
2019-09-30 21:57:27 +00:00
|
|
|
// [9] if((byte) main::i#1!=(byte) 6) goto main::@1 -- vbuz1_neq_vbuc1_then_la1
|
2019-09-26 12:53:33 +00:00
|
|
|
lda #6
|
|
|
|
cmp.z i
|
2019-09-29 21:13:37 +00:00
|
|
|
bne __b1_from___b1
|
|
|
|
jmp __breturn
|
2019-09-26 12:53:33 +00:00
|
|
|
// main::@return
|
2019-09-29 21:13:37 +00:00
|
|
|
__breturn:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [10] return
|
2019-09-26 12:53:33 +00:00
|
|
|
rts
|
|
|
|
}
|
|
|
|
// File Data
|
|
|
|
idx: .byte 0
|
|
|
|
|
|
|
|
REGISTER UPLIFT POTENTIAL REGISTERS
|
2019-11-17 00:51:42 +00:00
|
|
|
Statement [6] *((const byte*) SCREEN + (byte) main::i#2) ← *((const byte*) idx_p) [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a
|
2019-10-12 09:40:36 +00:00
|
|
|
Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::i#2 main::i#1 ]
|
2019-11-17 00:51:42 +00:00
|
|
|
Statement [7] *((const byte*) idx_p) ← *((const byte*) idx_p) + (byte) main::i#2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a
|
|
|
|
Statement [6] *((const byte*) SCREEN + (byte) main::i#2) ← *((const byte*) idx_p) [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a
|
|
|
|
Statement [7] *((const byte*) idx_p) ← *((const byte*) idx_p) + (byte) main::i#2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a
|
2019-10-12 09:40:36 +00:00
|
|
|
Potential registers zp[1]:2 [ main::i#2 main::i#1 ] : zp[1]:2 , reg byte x , reg byte y ,
|
2019-10-20 11:21:04 +00:00
|
|
|
Potential registers mem[1] [ idx ] : mem[1] ,
|
2019-09-26 12:53:33 +00:00
|
|
|
|
|
|
|
REGISTER UPLIFT SCOPES
|
2019-10-12 09:40:36 +00:00
|
|
|
Uplift Scope [main] 31.17: zp[1]:2 [ main::i#2 main::i#1 ]
|
2020-01-11 13:55:27 +00:00
|
|
|
Uplift Scope [] 0: mem[1] [ idx ]
|
2019-09-26 12:53:33 +00:00
|
|
|
|
2020-01-11 13:55:27 +00:00
|
|
|
Uplifting [main] best 403 combination reg byte x [ main::i#2 main::i#1 ]
|
|
|
|
Uplifting [] best 403 combination mem[1] [ idx ]
|
2019-10-20 11:21:04 +00:00
|
|
|
Attempting to uplift remaining variables inmem[1] [ idx ]
|
2020-01-11 13:55:27 +00:00
|
|
|
Uplifting [] best 403 combination mem[1] [ idx ]
|
2019-09-26 12:53:33 +00:00
|
|
|
|
|
|
|
ASSEMBLER BEFORE OPTIMIZATION
|
|
|
|
// File Comments
|
|
|
|
// Test declaring a variable as "memory", meaning it will be stored in memory and accessed through an implicit pointer (using load/store)
|
2019-09-26 13:05:50 +00:00
|
|
|
// Test a pointer to a memory variable
|
2019-09-26 12:53:33 +00:00
|
|
|
// Upstart
|
|
|
|
.pc = $801 "Basic"
|
2019-09-29 21:13:37 +00:00
|
|
|
:BasicUpstart(__bbegin)
|
2019-09-26 12:53:33 +00:00
|
|
|
.pc = $80d "Program"
|
|
|
|
// Global Constants & labels
|
|
|
|
.label SCREEN = $400
|
2019-11-03 16:05:55 +00:00
|
|
|
.label idx_p = idx
|
2019-09-26 12:53:33 +00:00
|
|
|
// @begin
|
2019-09-29 21:13:37 +00:00
|
|
|
__bbegin:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1_from___bbegin:
|
|
|
|
jmp __b1
|
2019-09-26 12:53:33 +00:00
|
|
|
// @1
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [2] call main
|
|
|
|
// [4] phi from @1 to main [phi:@1->main]
|
2019-09-29 21:13:37 +00:00
|
|
|
main_from___b1:
|
2019-09-26 12:53:33 +00:00
|
|
|
jsr main
|
2019-09-30 21:57:27 +00:00
|
|
|
// [3] phi from @1 to @end [phi:@1->@end]
|
2019-09-29 21:13:37 +00:00
|
|
|
__bend_from___b1:
|
|
|
|
jmp __bend
|
2019-09-26 12:53:33 +00:00
|
|
|
// @end
|
2019-09-29 21:13:37 +00:00
|
|
|
__bend:
|
2019-09-26 12:53:33 +00:00
|
|
|
// main
|
|
|
|
main: {
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi from main to main::@1 [phi:main->main::@1]
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1_from_main:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
|
2019-09-26 12:53:33 +00:00
|
|
|
ldx #0
|
2019-09-29 21:13:37 +00:00
|
|
|
jmp __b1
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1_from___b1:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@1->main::@1#0] -- register_copy
|
2019-09-29 21:13:37 +00:00
|
|
|
jmp __b1
|
2019-09-26 12:53:33 +00:00
|
|
|
// main::@1
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1:
|
2019-11-17 00:51:42 +00:00
|
|
|
// [6] *((const byte*) SCREEN + (byte) main::i#2) ← *((const byte*) idx_p) -- pbuc1_derefidx_vbuxx=_deref_pbuc2
|
2019-09-30 21:57:27 +00:00
|
|
|
lda idx_p
|
2019-09-26 12:53:33 +00:00
|
|
|
sta SCREEN,x
|
2019-11-17 00:51:42 +00:00
|
|
|
// [7] *((const byte*) idx_p) ← *((const byte*) idx_p) + (byte) main::i#2 -- _deref_pbuc1=_deref_pbuc1_plus_vbuxx
|
2019-09-26 12:53:33 +00:00
|
|
|
txa
|
|
|
|
clc
|
2019-09-30 21:57:27 +00:00
|
|
|
adc idx_p
|
|
|
|
sta idx_p
|
|
|
|
// [8] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
|
2019-09-26 12:53:33 +00:00
|
|
|
inx
|
2019-09-30 21:57:27 +00:00
|
|
|
// [9] if((byte) main::i#1!=(byte) 6) goto main::@1 -- vbuxx_neq_vbuc1_then_la1
|
2019-09-26 12:53:33 +00:00
|
|
|
cpx #6
|
2019-09-29 21:13:37 +00:00
|
|
|
bne __b1_from___b1
|
|
|
|
jmp __breturn
|
2019-09-26 12:53:33 +00:00
|
|
|
// main::@return
|
2019-09-29 21:13:37 +00:00
|
|
|
__breturn:
|
2019-09-30 21:57:27 +00:00
|
|
|
// [10] return
|
2019-09-26 12:53:33 +00:00
|
|
|
rts
|
|
|
|
}
|
|
|
|
// File Data
|
|
|
|
idx: .byte 0
|
|
|
|
|
|
|
|
ASSEMBLER OPTIMIZATIONS
|
2019-09-29 21:13:37 +00:00
|
|
|
Removing instruction jmp __b1
|
|
|
|
Removing instruction jmp __bend
|
|
|
|
Removing instruction jmp __b1
|
|
|
|
Removing instruction jmp __breturn
|
2019-09-26 12:53:33 +00:00
|
|
|
Succesful ASM optimization Pass5NextJumpElimination
|
2019-09-29 21:13:37 +00:00
|
|
|
Replacing label __b1_from___b1 with __b1
|
|
|
|
Removing instruction __b1_from___bbegin:
|
2020-03-03 07:58:31 +00:00
|
|
|
Removing instruction __b1:
|
2019-09-29 21:13:37 +00:00
|
|
|
Removing instruction main_from___b1:
|
|
|
|
Removing instruction __bend_from___b1:
|
|
|
|
Removing instruction __b1_from___b1:
|
2019-09-26 12:53:33 +00:00
|
|
|
Succesful ASM optimization Pass5RedundantLabelElimination
|
2019-09-29 21:13:37 +00:00
|
|
|
Removing instruction __bend:
|
|
|
|
Removing instruction __b1_from_main:
|
|
|
|
Removing instruction __breturn:
|
2019-09-26 12:53:33 +00:00
|
|
|
Succesful ASM optimization Pass5UnusedLabelElimination
|
2020-01-11 13:55:27 +00:00
|
|
|
Updating BasicUpstart to call main directly
|
|
|
|
Removing instruction jsr main
|
|
|
|
Succesful ASM optimization Pass5SkipBegin
|
2019-09-29 21:13:37 +00:00
|
|
|
Removing instruction jmp __b1
|
2019-09-26 12:53:33 +00:00
|
|
|
Succesful ASM optimization Pass5NextJumpElimination
|
2020-03-03 07:58:31 +00:00
|
|
|
Removing instruction __bbegin:
|
2020-01-11 13:55:27 +00:00
|
|
|
Succesful ASM optimization Pass5UnusedLabelElimination
|
2019-09-26 12:53:33 +00:00
|
|
|
|
|
|
|
FINAL SYMBOL TABLE
|
|
|
|
(label) @1
|
|
|
|
(label) @begin
|
|
|
|
(label) @end
|
2019-10-13 22:51:15 +00:00
|
|
|
(const byte*) SCREEN = (byte*) 1024
|
2020-01-11 13:55:27 +00:00
|
|
|
(byte) idx loadstore mem[1] = (byte) 0
|
2019-11-17 00:51:42 +00:00
|
|
|
(const byte*) idx_p = &(byte) idx
|
2019-09-26 12:53:33 +00:00
|
|
|
(void()) main()
|
|
|
|
(label) main::@1
|
|
|
|
(label) main::@return
|
|
|
|
(byte) main::i
|
|
|
|
(byte) main::i#1 reg byte x 16.5
|
|
|
|
(byte) main::i#2 reg byte x 14.666666666666666
|
|
|
|
|
|
|
|
reg byte x [ main::i#2 main::i#1 ]
|
2019-10-20 11:21:04 +00:00
|
|
|
mem[1] [ idx ]
|
2019-09-26 12:53:33 +00:00
|
|
|
|
|
|
|
|
|
|
|
FINAL ASSEMBLER
|
2020-01-11 13:55:27 +00:00
|
|
|
Score: 301
|
2019-09-26 12:53:33 +00:00
|
|
|
|
|
|
|
// File Comments
|
|
|
|
// Test declaring a variable as "memory", meaning it will be stored in memory and accessed through an implicit pointer (using load/store)
|
2019-09-26 13:05:50 +00:00
|
|
|
// Test a pointer to a memory variable
|
2019-09-26 12:53:33 +00:00
|
|
|
// Upstart
|
|
|
|
.pc = $801 "Basic"
|
2020-01-11 13:55:27 +00:00
|
|
|
:BasicUpstart(main)
|
2019-09-26 12:53:33 +00:00
|
|
|
.pc = $80d "Program"
|
|
|
|
// Global Constants & labels
|
|
|
|
.label SCREEN = $400
|
2019-11-03 16:05:55 +00:00
|
|
|
.label idx_p = idx
|
2019-09-26 12:53:33 +00:00
|
|
|
// @begin
|
2019-09-30 21:57:27 +00:00
|
|
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
2019-09-26 12:53:33 +00:00
|
|
|
// @1
|
2019-09-30 21:57:27 +00:00
|
|
|
// [2] call main
|
|
|
|
// [4] phi from @1 to main [phi:@1->main]
|
|
|
|
// [3] phi from @1 to @end [phi:@1->@end]
|
2019-09-26 12:53:33 +00:00
|
|
|
// @end
|
|
|
|
// main
|
|
|
|
main: {
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi from main to main::@1 [phi:main->main::@1]
|
|
|
|
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
|
2019-09-26 12:53:33 +00:00
|
|
|
ldx #0
|
2019-09-30 21:57:27 +00:00
|
|
|
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
|
|
|
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@1->main::@1#0] -- register_copy
|
2019-09-26 12:53:33 +00:00
|
|
|
// main::@1
|
2019-09-29 21:13:37 +00:00
|
|
|
__b1:
|
2019-09-26 12:53:33 +00:00
|
|
|
// SCREEN[i] = *idx_p
|
2019-11-17 00:51:42 +00:00
|
|
|
// [6] *((const byte*) SCREEN + (byte) main::i#2) ← *((const byte*) idx_p) -- pbuc1_derefidx_vbuxx=_deref_pbuc2
|
2019-09-30 21:57:27 +00:00
|
|
|
lda idx_p
|
2019-09-26 12:53:33 +00:00
|
|
|
sta SCREEN,x
|
|
|
|
// *idx_p +=i
|
2019-11-17 00:51:42 +00:00
|
|
|
// [7] *((const byte*) idx_p) ← *((const byte*) idx_p) + (byte) main::i#2 -- _deref_pbuc1=_deref_pbuc1_plus_vbuxx
|
2019-09-26 12:53:33 +00:00
|
|
|
txa
|
|
|
|
clc
|
2019-09-30 21:57:27 +00:00
|
|
|
adc idx_p
|
|
|
|
sta idx_p
|
2019-09-26 12:53:33 +00:00
|
|
|
// for( char i: 0..5 )
|
2019-09-30 21:57:27 +00:00
|
|
|
// [8] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
|
2019-09-26 12:53:33 +00:00
|
|
|
inx
|
2019-09-30 21:57:27 +00:00
|
|
|
// [9] if((byte) main::i#1!=(byte) 6) goto main::@1 -- vbuxx_neq_vbuc1_then_la1
|
2019-09-26 12:53:33 +00:00
|
|
|
cpx #6
|
2019-09-29 21:13:37 +00:00
|
|
|
bne __b1
|
2019-09-26 12:53:33 +00:00
|
|
|
// main::@return
|
|
|
|
// }
|
2019-09-30 21:57:27 +00:00
|
|
|
// [10] return
|
2019-09-26 12:53:33 +00:00
|
|
|
rts
|
|
|
|
}
|
|
|
|
// File Data
|
|
|
|
idx: .byte 0
|
|
|
|
|