Inlined call call __init

CONTROL FLOW GRAPH SSA

void main()
main: scope:[main]  from __start::@1
  screen#15 = phi( __start::@1/screen#17 )
  line::x0#0 = 1
  line::x1#0 = 2
  call line
  to:main::@1
main::@1: scope:[main]  from main
  screen#8 = phi( main/screen#4 )
  screen#0 = screen#8
  line::x0#1 = 3
  line::x1#1 = 5
  call line
  to:main::@2
main::@2: scope:[main]  from main::@1
  screen#9 = phi( main::@1/screen#4 )
  screen#1 = screen#9
  to:main::@return
main::@return: scope:[main]  from main::@2
  screen#10 = phi( main::@2/screen#1 )
  screen#2 = screen#10
  return 
  to:@return

void line(char x0 , char x1)
line: scope:[line]  from main main::@1
  screen#18 = phi( main/screen#15, main::@1/screen#0 )
  line::x1#3 = phi( main/line::x1#0, main::@1/line::x1#1 )
  line::x0#2 = phi( main/line::x0#0, main::@1/line::x0#1 )
  line::x#0 = line::x0#2
  to:line::@1
line::@1: scope:[line]  from line line::@2
  screen#16 = phi( line/screen#18, line::@2/screen#3 )
  line::x1#2 = phi( line/line::x1#3, line::@2/line::x1#4 )
  line::x#2 = phi( line/line::x#0, line::@2/line::x#1 )
  line::$0 = line::x#2 < line::x1#2
  if(line::$0) goto line::@2
  to:line::@return
line::@2: scope:[line]  from line::@1
  line::x1#4 = phi( line::@1/line::x1#2 )
  screen#11 = phi( line::@1/screen#16 )
  line::x#3 = phi( line::@1/line::x#2 )
  *screen#11 = line::x#3
  screen#3 = ++ screen#11
  line::x#1 = ++ line::x#3
  to:line::@1
line::@return: scope:[line]  from line::@1
  screen#12 = phi( line::@1/screen#16 )
  screen#4 = screen#12
  return 
  to:@return

void __start()
__start: scope:[__start]  from
  to:__start::__init1
__start::__init1: scope:[__start]  from __start
  screen#5 = (char *)$400
  to:__start::@1
__start::@1: scope:[__start]  from __start::__init1
  screen#17 = phi( __start::__init1/screen#5 )
  call main
  to:__start::@2
__start::@2: scope:[__start]  from __start::@1
  screen#13 = phi( __start::@1/screen#2 )
  screen#6 = screen#13
  to:__start::@return
__start::@return: scope:[__start]  from __start::@2
  screen#14 = phi( __start::@2/screen#6 )
  screen#7 = screen#14
  return 
  to:@return

SYMBOL TABLE SSA
void __start()
void line(char x0 , char x1)
bool line::$0
char line::x
char line::x#0
char line::x#1
char line::x#2
char line::x#3
char line::x0
char line::x0#0
char line::x0#1
char line::x0#2
char line::x1
char line::x1#0
char line::x1#1
char line::x1#2
char line::x1#3
char line::x1#4
void main()
char *screen
char *screen#0
char *screen#1
char *screen#10
char *screen#11
char *screen#12
char *screen#13
char *screen#14
char *screen#15
char *screen#16
char *screen#17
char *screen#18
char *screen#2
char *screen#3
char *screen#4
char *screen#5
char *screen#6
char *screen#7
char *screen#8
char *screen#9

Adding number conversion cast (unumber) 1 in line::x0#0 = 1
Adding number conversion cast (unumber) 2 in line::x1#0 = 2
Adding number conversion cast (unumber) 3 in line::x0#1 = 3
Adding number conversion cast (unumber) 5 in line::x1#1 = 5
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast line::x0#0 = (unumber)1
Inlining cast line::x1#0 = (unumber)2
Inlining cast line::x0#1 = (unumber)3
Inlining cast line::x1#1 = (unumber)5
Successful SSA optimization Pass2InlineCast
Simplifying constant integer cast 1
Simplifying constant integer cast 2
Simplifying constant integer cast 3
Simplifying constant integer cast 5
Simplifying constant pointer cast (char *) 1024
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (char) 1
Finalized unsigned number type (char) 2
Finalized unsigned number type (char) 3
Finalized unsigned number type (char) 5
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias screen#0 = screen#8 
Alias screen#1 = screen#9 screen#10 screen#2 
Alias line::x#0 = line::x0#2 
Alias line::x#2 = line::x#3 
Alias screen#11 = screen#16 screen#12 screen#4 
Alias line::x1#2 = line::x1#4 
Alias screen#17 = screen#5 
Alias screen#13 = screen#6 screen#14 screen#7 
Successful SSA optimization Pass2AliasElimination
Identical Phi Values screen#15 screen#17
Identical Phi Values screen#0 screen#11
Identical Phi Values screen#1 screen#11
Identical Phi Values line::x1#2 line::x1#3
Identical Phi Values screen#13 screen#1
Successful SSA optimization Pass2IdenticalPhiElimination
Simple Condition line::$0 [13] if(line::x#2<line::x1#3) goto line::@2
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant line::x0#0 = 1
Constant line::x1#0 = 2
Constant line::x0#1 = 3
Constant line::x1#1 = 5
Constant screen#17 = (char *) 1024
Successful SSA optimization Pass2ConstantIdentification
Removing unused procedure __start
Removing unused procedure block __start
Removing unused procedure block __start::__init1
Removing unused procedure block __start::@1
Removing unused procedure block __start::@2
Removing unused procedure block __start::@return
Successful SSA optimization PassNEliminateEmptyStart
Inlining constant with different constant siblings line::x0#0
Inlining constant with var siblings line::x1#0
Inlining constant with different constant siblings line::x0#1
Inlining constant with var siblings line::x1#1
Inlining constant with var siblings screen#17
Constant inlined line::x0#0 = 1
Constant inlined line::x1#1 = 5
Constant inlined screen#17 = (char *) 1024
Constant inlined line::x1#0 = 2
Constant inlined line::x0#1 = 3
Successful SSA optimization Pass2ConstantInlining
Adding NOP phi() at start of main
Adding NOP phi() at start of main::@2
CALL GRAPH
Calls in [main] to line:1 line:3 

Created 5 initial phi equivalence classes
Coalesced [2] screen#19 = screen#11
Coalesced [7] line::x#4 = line::x#0
Coalesced (already) [8] screen#20 = screen#18
Coalesced [15] line::x#5 = line::x#1
Coalesced [16] screen#21 = screen#3
Coalesced down to 3 phi equivalence classes
Culled Empty Block label main::@2
Adding NOP phi() at start of main
Adding NOP phi() at start of main::@1

FINAL CONTROL FLOW GRAPH

void main()
main: scope:[main]  from
  [0] phi()
  [1] call line
  to:main::@1
main::@1: scope:[main]  from main
  [2] phi()
  [3] call line
  to:main::@return
main::@return: scope:[main]  from main::@1
  [4] return 
  to:@return

void line(char x0 , char x1)
line: scope:[line]  from main main::@1
  [5] screen#18 = phi( main/(char *) 1024, main::@1/screen#11 )
  [5] line::x1#3 = phi( main/2, main::@1/5 )
  [5] line::x#0 = phi( main/1, main::@1/3 )
  to:line::@1
line::@1: scope:[line]  from line line::@2
  [6] screen#11 = phi( line/screen#18, line::@2/screen#3 )
  [6] line::x#2 = phi( line/line::x#0, line::@2/line::x#1 )
  [7] if(line::x#2<line::x1#3) goto line::@2
  to:line::@return
line::@return: scope:[line]  from line::@1
  [8] return 
  to:@return
line::@2: scope:[line]  from line::@1
  [9] *screen#11 = line::x#2
  [10] screen#3 = ++ screen#11
  [11] line::x#1 = ++ line::x#2
  to:line::@1


VARIABLE REGISTER WEIGHTS
void line(char x0 , char x1)
char line::x
char line::x#0 // 11.0
char line::x#1 // 202.0
char line::x#2 // 103.75
char line::x0
char line::x1
char line::x1#3 // 16.833333333333332
void main()
char *screen
char *screen#11 // 52.66666666666666
char *screen#18 // 13.0
char *screen#3 // 101.0

Initial phi equivalence classes
[ line::x1#3 ]
[ screen#18 screen#11 screen#3 ]
[ line::x#2 line::x#0 line::x#1 ]
Complete equivalence classes
[ line::x1#3 ]
[ screen#18 screen#11 screen#3 ]
[ line::x#2 line::x#0 line::x#1 ]
Allocated zp[1]:2 [ line::x#2 line::x#0 line::x#1 ]
Allocated zp[2]:3 [ screen#18 screen#11 screen#3 ]
Allocated zp[1]:5 [ line::x1#3 ]
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [9] *screen#11 = line::x#2 [ line::x1#3 screen#11 line::x#2 ] ( line:1 [ line::x1#3 screen#11 line::x#2 ] { }  line:3 [ line::x1#3 screen#11 line::x#2 ] { { screen#11 = screen#18 } }  ) always clobbers reg byte y 
Removing always clobbered register reg byte y as potential for zp[1]:5 [ line::x1#3 ]
Removing always clobbered register reg byte y as potential for zp[1]:2 [ line::x#2 line::x#0 line::x#1 ]
Statement [9] *screen#11 = line::x#2 [ line::x1#3 screen#11 line::x#2 ] ( line:1 [ line::x1#3 screen#11 line::x#2 ] { }  line:3 [ line::x1#3 screen#11 line::x#2 ] { { screen#11 = screen#18 } }  ) always clobbers reg byte y 
Potential registers zp[1]:5 [ line::x1#3 ] : zp[1]:5 , reg byte a , reg byte x , 
Potential registers zp[2]:3 [ screen#18 screen#11 screen#3 ] : zp[2]:3 , 
Potential registers zp[1]:2 [ line::x#2 line::x#0 line::x#1 ] : zp[1]:2 , reg byte a , reg byte x , 

REGISTER UPLIFT SCOPES
Uplift Scope [line] 316.75: zp[1]:2 [ line::x#2 line::x#0 line::x#1 ] 16.83: zp[1]:5 [ line::x1#3 ] 
Uplift Scope [] 166.67: zp[2]:3 [ screen#18 screen#11 screen#3 ] 
Uplift Scope [main] 

Uplifting [line] best 444 combination reg byte x [ line::x#2 line::x#0 line::x#1 ] zp[1]:5 [ line::x1#3 ] 
Uplifting [] best 444 combination zp[2]:3 [ screen#18 screen#11 screen#3 ] 
Uplifting [main] best 444 combination 
Attempting to uplift remaining variables inzp[1]:5 [ line::x1#3 ]
Uplifting [line] best 444 combination zp[1]:5 [ line::x1#3 ] 
Allocated (was zp[2]:3) zp[2]:2 [ screen#18 screen#11 screen#3 ]
Allocated (was zp[1]:5) zp[1]:4 [ line::x1#3 ]

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Multiple calls with different (constant?) parameters should yield different values at runtime
// Currently the same constant parameter is passed on every call.
// Reason: Multiple versioned parameter constants x0#0, x0#1 are only output as a single constant in the ASM .const x0 = 0
  // Upstart
  // Commodore 64 PRG executable file
.file [name="callconstparam.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
  // Global Constants & labels
  .label screen = 2
.segment Code
  // main
main: {
    // [1] call line
    // [5] phi from main to line [phi:main->line]
  line_from_main:
    // [5] phi screen#18 = (char *) 1024 [phi:main->line#0] -- pbuz1=pbuc1 
    lda #<$400
    sta.z screen
    lda #>$400
    sta.z screen+1
    // [5] phi line::x1#3 = 2 [phi:main->line#1] -- vbuz1=vbuc1 
    lda #2
    sta.z line.x1
    // [5] phi line::x#0 = 1 [phi:main->line#2] -- vbuxx=vbuc1 
    ldx #1
    jsr line
    // [2] phi from main to main::@1 [phi:main->main::@1]
  __b1_from_main:
    jmp __b1
    // main::@1
  __b1:
    // [3] call line
    // [5] phi from main::@1 to line [phi:main::@1->line]
  line_from___b1:
    // [5] phi screen#18 = screen#11 [phi:main::@1->line#0] -- register_copy 
    // [5] phi line::x1#3 = 5 [phi:main::@1->line#1] -- vbuz1=vbuc1 
    lda #5
    sta.z line.x1
    // [5] phi line::x#0 = 3 [phi:main::@1->line#2] -- vbuxx=vbuc1 
    ldx #3
    jsr line
    jmp __breturn
    // main::@return
  __breturn:
    // [4] return 
    rts
}
  // line
// void line(char x0, __zp(4) char x1)
line: {
    .label x1 = 4
    // [6] phi from line line::@2 to line::@1 [phi:line/line::@2->line::@1]
  __b1_from_line:
  __b1_from___b2:
    // [6] phi screen#11 = screen#18 [phi:line/line::@2->line::@1#0] -- register_copy 
    // [6] phi line::x#2 = line::x#0 [phi:line/line::@2->line::@1#1] -- register_copy 
    jmp __b1
    // line::@1
  __b1:
    // [7] if(line::x#2<line::x1#3) goto line::@2 -- vbuxx_lt_vbuz1_then_la1 
    cpx.z x1
    bcc __b2
    jmp __breturn
    // line::@return
  __breturn:
    // [8] return 
    rts
    // line::@2
  __b2:
    // [9] *screen#11 = line::x#2 -- _deref_pbuz1=vbuxx 
    txa
    ldy #0
    sta (screen),y
    // [10] screen#3 = ++ screen#11 -- pbuz1=_inc_pbuz1 
    inc.z screen
    bne !+
    inc.z screen+1
  !:
    // [11] line::x#1 = ++ line::x#2 -- vbuxx=_inc_vbuxx 
    inx
    jmp __b1_from___b2
}
  // File Data

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __breturn
Removing instruction jmp __b1
Removing instruction jmp __breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __b1_from___b2 with __b1
Removing instruction __b1_from_main:
Removing instruction line_from___b1:
Removing instruction __b1_from_line:
Removing instruction __b1_from___b2:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction line_from_main:
Removing instruction __b1:
Removing instruction __breturn:
Removing instruction __breturn:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
void line(char x0 , char x1)
char line::x
char line::x#0 // reg byte x 11.0
char line::x#1 // reg byte x 202.0
char line::x#2 // reg byte x 103.75
char line::x0
char line::x1
char line::x1#3 // x1 zp[1]:4 16.833333333333332
void main()
char *screen
char *screen#11 // screen zp[2]:2 52.66666666666666
char *screen#18 // screen zp[2]:2 13.0
char *screen#3 // screen zp[2]:2 101.0

zp[1]:4 [ line::x1#3 ]
zp[2]:2 [ screen#18 screen#11 screen#3 ]
reg byte x [ line::x#2 line::x#0 line::x#1 ]


FINAL ASSEMBLER
Score: 378

  // File Comments
// Multiple calls with different (constant?) parameters should yield different values at runtime
// Currently the same constant parameter is passed on every call.
// Reason: Multiple versioned parameter constants x0#0, x0#1 are only output as a single constant in the ASM .const x0 = 0
  // Upstart
  // Commodore 64 PRG executable file
.file [name="callconstparam.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
  // Global Constants & labels
  .label screen = 2
.segment Code
  // main
main: {
    // line(1,2)
    // [1] call line
    // [5] phi from main to line [phi:main->line]
    // [5] phi screen#18 = (char *) 1024 [phi:main->line#0] -- pbuz1=pbuc1 
    lda #<$400
    sta.z screen
    lda #>$400
    sta.z screen+1
    // [5] phi line::x1#3 = 2 [phi:main->line#1] -- vbuz1=vbuc1 
    lda #2
    sta.z line.x1
    // [5] phi line::x#0 = 1 [phi:main->line#2] -- vbuxx=vbuc1 
    ldx #1
    jsr line
    // [2] phi from main to main::@1 [phi:main->main::@1]
    // main::@1
    // line(3,5)
    // [3] call line
    // [5] phi from main::@1 to line [phi:main::@1->line]
    // [5] phi screen#18 = screen#11 [phi:main::@1->line#0] -- register_copy 
    // [5] phi line::x1#3 = 5 [phi:main::@1->line#1] -- vbuz1=vbuc1 
    lda #5
    sta.z line.x1
    // [5] phi line::x#0 = 3 [phi:main::@1->line#2] -- vbuxx=vbuc1 
    ldx #3
    jsr line
    // main::@return
    // }
    // [4] return 
    rts
}
  // line
// void line(char x0, __zp(4) char x1)
line: {
    .label x1 = 4
    // [6] phi from line line::@2 to line::@1 [phi:line/line::@2->line::@1]
    // [6] phi screen#11 = screen#18 [phi:line/line::@2->line::@1#0] -- register_copy 
    // [6] phi line::x#2 = line::x#0 [phi:line/line::@2->line::@1#1] -- register_copy 
    // line::@1
  __b1:
    // for(byte x  = x0; x<x1; x++)
    // [7] if(line::x#2<line::x1#3) goto line::@2 -- vbuxx_lt_vbuz1_then_la1 
    cpx.z x1
    bcc __b2
    // line::@return
    // }
    // [8] return 
    rts
    // line::@2
  __b2:
    // *screen = x
    // [9] *screen#11 = line::x#2 -- _deref_pbuz1=vbuxx 
    txa
    ldy #0
    sta (screen),y
    // screen++;
    // [10] screen#3 = ++ screen#11 -- pbuz1=_inc_pbuz1 
    inc.z screen
    bne !+
    inc.z screen+1
  !:
    // for(byte x  = x0; x<x1; x++)
    // [11] line::x#1 = ++ line::x#2 -- vbuxx=_inc_vbuxx 
    inx
    jmp __b1
}
  // File Data

