PARSING src/test/java/dk/camelot64/kickc/test/kc/local-string.kc
// Local constant strings are placed at the start of the method. This means the generated ASM jumps / calls straignt into the constant string
void main() {
    byte* screen = $0400;
    byte[] msg = "message 2 @";
    byte i=0;
    while(msg[i]!='@') {
        screen[i++] = msg[i];
    }
}

Adding pre/post-modifier (byte) main::i ← ++ (byte) main::i

STATEMENTS
proc (void()) main()
  (byte*) main::screen ← (word/signed word/dword/signed dword) 1024
  (byte[]) main::msg ← (string) "message 2 @"
  (byte) main::i ← (byte/signed byte/word/signed word/dword/signed dword) 0
main::@1:
  (boolean~) main::$0 ← *((byte[]) main::msg + (byte) main::i) != (byte) '@'
  if((boolean~) main::$0) goto main::@2
  goto main::@3
main::@2:
  *((byte*) main::screen + (byte) main::i) ← *((byte[]) main::msg + (byte) main::i)
  (byte) main::i ← ++ (byte) main::i
  goto main::@1
main::@3:
main::@return:
  return 
endproc // main()
  call main 

SYMBOLS
(void()) main()
(boolean~) main::$0
(label) main::@1
(label) main::@2
(label) main::@3
(label) main::@return
(byte) main::i
(byte[]) main::msg
(byte*) main::screen

Promoting word/signed word/dword/signed dword to byte* in main::screen ← ((byte*)) 1024
INITIAL CONTROL FLOW GRAPH
@begin: scope:[]  from
  to:@1
main: scope:[main]  from
  (byte*) main::screen ← ((byte*)) (word/signed word/dword/signed dword) 1024
  (byte[]) main::msg ← (string) "message 2 @"
  (byte) main::i ← (byte/signed byte/word/signed word/dword/signed dword) 0
  to:main::@1
main::@1: scope:[main]  from main main::@2
  (boolean~) main::$0 ← *((byte[]) main::msg + (byte) main::i) != (byte) '@'
  if((boolean~) main::$0) goto main::@2
  to:main::@4
main::@2: scope:[main]  from main::@1 main::@5
  *((byte*) main::screen + (byte) main::i) ← *((byte[]) main::msg + (byte) main::i)
  (byte) main::i ← ++ (byte) main::i
  to:main::@1
main::@4: scope:[main]  from main::@1
  to:main::@3
main::@3: scope:[main]  from main::@4 main::@6
  to:main::@return
main::@5: scope:[main]  from
  to:main::@2
main::@6: scope:[main]  from
  to:main::@3
main::@return: scope:[main]  from main::@3
  return 
  to:@return
@1: scope:[]  from @begin
  call main 
  to:@end
@end: scope:[]  from @1

Creating constant string variable for inline (const string) main::$1 "message 2 @"
Removing empty block main::@4
Removing empty block main::@3
Removing empty block main::@5
Removing empty block main::@6
PROCEDURE MODIFY VARIABLE ANALYSIS

Completing Phi functions...
Completing Phi functions...

CONTROL FLOW GRAPH SSA WITH ASSIGNMENT CALL & RETURN
@begin: scope:[]  from
  to:@1
main: scope:[main]  from @1
  (byte*) main::screen#0 ← ((byte*)) (word/signed word/dword/signed dword) 1024
  (byte[]) main::msg#0 ← (const string) main::$1
  (byte) main::i#0 ← (byte/signed byte/word/signed word/dword/signed dword) 0
  to:main::@1
main::@1: scope:[main]  from main main::@2
  (byte*) main::screen#2 ← phi( main/(byte*) main::screen#0 main::@2/(byte*) main::screen#1 )
  (byte) main::i#2 ← phi( main/(byte) main::i#0 main::@2/(byte) main::i#1 )
  (boolean~) main::$0 ← *((byte[]) main::msg#0 + (byte) main::i#2) != (byte) '@'
  if((boolean~) main::$0) goto main::@2
  to:main::@return
main::@2: scope:[main]  from main::@1
  (byte*) main::screen#1 ← phi( main::@1/(byte*) main::screen#2 )
  (byte) main::i#3 ← phi( main::@1/(byte) main::i#2 )
  *((byte*) main::screen#1 + (byte) main::i#3) ← *((byte[]) main::msg#0 + (byte) main::i#3)
  (byte) main::i#1 ← ++ (byte) main::i#3
  to:main::@1
main::@return: scope:[main]  from main::@1
  return 
  to:@return
@1: scope:[]  from @begin
  call main param-assignment
  to:@2
@2: scope:[]  from @1
  to:@end
@end: scope:[]  from @2

SYMBOL TABLE SSA
(label) @1
(label) @2
(label) @begin
(label) @end
(void()) main()
(boolean~) main::$0
(const string) main::$1 = (string) "message 2 @"
(label) main::@1
(label) main::@2
(label) main::@return
(byte) main::i
(byte) main::i#0
(byte) main::i#1
(byte) main::i#2
(byte) main::i#3
(byte[]) main::msg
(byte[]) main::msg#0
(byte*) main::screen
(byte*) main::screen#0
(byte*) main::screen#1
(byte*) main::screen#2

OPTIMIZING CONTROL FLOW GRAPH
Culled Empty Block (label) @2
Succesful SSA optimization Pass2CullEmptyBlocks
Alias (byte) main::i#2 = (byte) main::i#3 
Alias (byte*) main::screen#1 = (byte*) main::screen#2 
Succesful SSA optimization Pass2AliasElimination
Self Phi Eliminated (byte*) main::screen#1
Succesful SSA optimization Pass2SelfPhiElimination
Redundant Phi (byte*) main::screen#1 (byte*) main::screen#0
Succesful SSA optimization Pass2RedundantPhiElimination
Simple Condition (boolean~) main::$0 if(*((byte[]) main::msg#0 + (byte) main::i#2)!=(byte) '@') goto main::@2
Succesful SSA optimization Pass2ConditionalJumpSimplification
Constant (const byte*) main::screen#0 = ((byte*))1024
Constant (const string) main::msg#0 = main::$1
Constant (const byte) main::i#0 = 0
Succesful SSA optimization Pass2ConstantIdentification
OPTIMIZING CONTROL FLOW GRAPH
Inlining constant with var siblings (const byte) main::i#0
Inlining constant with var siblings (const byte) main::i#0
Constant inlined main::$1 = (const string) main::msg#0
Constant inlined main::i#0 = (byte/signed byte/word/signed word/dword/signed dword) 0
Succesful SSA optimization Pass2ConstantInlining
Block Sequence Planned @begin @1 @end main main::@1 main::@return main::@2 
Block Sequence Planned @begin @1 @end main main::@1 main::@return main::@2 
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @end
Adding NOP phi() at start of main
CALL GRAPH
Calls in [] to main:2 

Propagating live ranges...
Propagating live ranges...
Created 1 initial phi equivalence classes
Coalesced [10] main::i#4 ← main::i#1
Coalesced down to 1 phi equivalence classes
Block Sequence Planned @begin @1 @end main main::@1 main::@return main::@2 
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @end
Adding NOP phi() at start of main
Propagating live ranges...
Propagating live ranges...

FINAL CONTROL FLOW GRAPH
@begin: scope:[]  from
  [0] phi() [ ] ( )
  to:@1
@1: scope:[]  from @begin
  [1] phi() [ ] ( )
  [2] call main param-assignment [ ] ( )
  to:@end
@end: scope:[]  from @1
  [3] phi() [ ] ( )
main: scope:[main]  from @1
  [4] phi() [ ] ( main:2 [ ] )
  to:main::@1
main::@1: scope:[main]  from main main::@2
  [5] (byte) main::i#2 ← phi( main/(byte/signed byte/word/signed word/dword/signed dword) 0 main::@2/(byte) main::i#1 ) [ main::i#2 ] ( main:2 [ main::i#2 ] )
  [6] if(*((const string) main::msg#0 + (byte) main::i#2)!=(byte) '@') goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] )
  to:main::@return
main::@return: scope:[main]  from main::@1
  [7] return  [ ] ( main:2 [ ] )
  to:@return
main::@2: scope:[main]  from main::@1
  [8] *((const byte*) main::screen#0 + (byte) main::i#2) ← *((const string) main::msg#0 + (byte) main::i#2) [ main::i#2 ] ( main:2 [ main::i#2 ] )
  [9] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] )
  to:main::@1

DOMINATORS
@begin dominated by  @begin 
@1 dominated by  @1 @begin 
@end dominated by  @1 @begin @end 
main dominated by  @1 @begin main 
main::@1 dominated by  @1 @begin main::@1 main 
main::@return dominated by  main::@return @1 @begin main::@1 main 
main::@2 dominated by  @1 @begin main::@1 main::@2 main 

NATURAL LOOPS
Found back edge: Loop head: main::@1 tails: main::@2 blocks: null
Populated: Loop head: main::@1 tails: main::@2 blocks: main::@2 main::@1 
Loop head: main::@1 tails: main::@2 blocks: main::@2 main::@1 

NATURAL LOOPS WITH DEPTH
Found 0 loops in scope []
Found 1 loops in scope [main]
  Loop head: main::@1 tails: main::@2 blocks: main::@2 main::@1 
Loop head: main::@1 tails: main::@2 blocks: main::@2 main::@1  depth: 1


VARIABLE REGISTER WEIGHTS
(void()) main()
(byte) main::i
(byte) main::i#1 22.0
(byte) main::i#2 18.333333333333332
(byte[]) main::msg
(byte*) main::screen

Initial phi equivalence classes
[ main::i#2 main::i#1 ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
Allocated zp ZP_BYTE:2 [ main::i#2 main::i#1 ]

INITIAL ASM
//SEG0 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
//SEG1 Global Constants & labels
//SEG2 @begin
bbegin:
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
b1_from_bbegin:
  jmp b1
//SEG4 @1
b1:
//SEG5 [2] call main param-assignment [ ] ( )
//SEG6 [4] phi from @1 to main [phi:@1->main]
main_from_b1:
  jsr main
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
bend_from_b1:
  jmp bend
//SEG8 @end
bend:
//SEG9 main
main: {
    .label screen = $400
    .label i = 2
  //SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
  b1_from_main:
  //SEG11 [5] phi (byte) main::i#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1 
    lda #0
    sta i
    jmp b1
  //SEG12 main::@1
  b1:
  //SEG13 [6] if(*((const string) main::msg#0 + (byte) main::i#2)!=(byte) '@') goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuz1_neq_vbuc2_then_la1 
    ldy i
    lda msg,y
    cmp #'@'
    bne b2
    jmp breturn
  //SEG14 main::@return
  breturn:
  //SEG15 [7] return  [ ] ( main:2 [ ] )
    rts
  //SEG16 main::@2
  b2:
  //SEG17 [8] *((const byte*) main::screen#0 + (byte) main::i#2) ← *((const string) main::msg#0 + (byte) main::i#2) [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuz1=pbuc2_derefidx_vbuz1 
    ldy i
    lda msg,y
    sta screen,y
  //SEG18 [9] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuz1=_inc_vbuz1 
    inc i
  //SEG19 [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
  b1_from_b2:
  //SEG20 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy 
    jmp b1
    msg: .text "message 2 @"
}

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [6] if(*((const string) main::msg#0 + (byte) main::i#2)!=(byte) '@') goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a 
Removing always clobbered register reg byte a as potential for zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Statement [8] *((const byte*) main::screen#0 + (byte) main::i#2) ← *((const string) main::msg#0 + (byte) main::i#2) [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a 
Statement [6] if(*((const string) main::msg#0 + (byte) main::i#2)!=(byte) '@') goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a 
Statement [8] *((const byte*) main::screen#0 + (byte) main::i#2) ← *((const string) main::msg#0 + (byte) main::i#2) [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a 
Potential registers zp ZP_BYTE:2 [ main::i#2 main::i#1 ] : zp ZP_BYTE:2 , reg byte x , reg byte y , 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 40.33: zp ZP_BYTE:2 [ main::i#2 main::i#1 ] 
Uplift Scope [] 

Uplifting [main] best 333 combination reg byte x [ main::i#2 main::i#1 ] 
Uplifting [] best 333 combination 

ASSEMBLER BEFORE OPTIMIZATION
//SEG0 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
//SEG1 Global Constants & labels
//SEG2 @begin
bbegin:
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
b1_from_bbegin:
  jmp b1
//SEG4 @1
b1:
//SEG5 [2] call main param-assignment [ ] ( )
//SEG6 [4] phi from @1 to main [phi:@1->main]
main_from_b1:
  jsr main
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
bend_from_b1:
  jmp bend
//SEG8 @end
bend:
//SEG9 main
main: {
    .label screen = $400
  //SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
  b1_from_main:
  //SEG11 [5] phi (byte) main::i#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
    ldx #0
    jmp b1
  //SEG12 main::@1
  b1:
  //SEG13 [6] if(*((const string) main::msg#0 + (byte) main::i#2)!=(byte) '@') goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuxx_neq_vbuc2_then_la1 
    lda msg,x
    cmp #'@'
    bne b2
    jmp breturn
  //SEG14 main::@return
  breturn:
  //SEG15 [7] return  [ ] ( main:2 [ ] )
    rts
  //SEG16 main::@2
  b2:
  //SEG17 [8] *((const byte*) main::screen#0 + (byte) main::i#2) ← *((const string) main::msg#0 + (byte) main::i#2) [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuxx=pbuc2_derefidx_vbuxx 
    lda msg,x
    sta screen,x
  //SEG18 [9] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuxx=_inc_vbuxx 
    inx
  //SEG19 [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
  b1_from_b2:
  //SEG20 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy 
    jmp b1
    msg: .text "message 2 @"
}

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp b1
Removing instruction jmp breturn
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction bbegin:
Removing instruction b1_from_bbegin:
Removing instruction main_from_b1:
Removing instruction bend_from_b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction b1:
Removing instruction bend:
Removing instruction b1_from_main:
Removing instruction breturn:
Removing instruction b1_from_b2:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(void()) main()
(label) main::@1
(label) main::@2
(label) main::@return
(byte) main::i
(byte) main::i#1 reg byte x 22.0
(byte) main::i#2 reg byte x 18.333333333333332
(byte[]) main::msg
(const string) main::msg#0 msg = (string) "message 2 @"
(byte*) main::screen
(const byte*) main::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024

reg byte x [ main::i#2 main::i#1 ]


FINAL ASSEMBLER
Score: 267

//SEG0 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
//SEG1 Global Constants & labels
//SEG2 @begin
//SEG3 [1] phi from @begin to @1 [phi:@begin->@1]
//SEG4 @1
//SEG5 [2] call main param-assignment [ ] ( )
//SEG6 [4] phi from @1 to main [phi:@1->main]
  jsr main
//SEG7 [3] phi from @1 to @end [phi:@1->@end]
//SEG8 @end
//SEG9 main
main: {
    .label screen = $400
  //SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
  //SEG11 [5] phi (byte) main::i#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
    ldx #0
  //SEG12 main::@1
  b1:
  //SEG13 [6] if(*((const string) main::msg#0 + (byte) main::i#2)!=(byte) '@') goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuxx_neq_vbuc2_then_la1 
    lda msg,x
    cmp #'@'
    bne b2
  //SEG14 main::@return
  //SEG15 [7] return  [ ] ( main:2 [ ] )
    rts
  //SEG16 main::@2
  b2:
  //SEG17 [8] *((const byte*) main::screen#0 + (byte) main::i#2) ← *((const string) main::msg#0 + (byte) main::i#2) [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuxx=pbuc2_derefidx_vbuxx 
    lda msg,x
    sta screen,x
  //SEG18 [9] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuxx=_inc_vbuxx 
    inx
  //SEG19 [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
  //SEG20 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy 
    jmp b1
    msg: .text "message 2 @"
}

