
CONTROL FLOW GRAPH SSA

void main()
main: scope:[main]  from __start
  SCREEN[0] = 'a'
  to:main::@return
main::@return: scope:[main]  from main
  return 
  to:@return

void __start()
__start: scope:[__start]  from
  call main
  to:__start::@1
__start::@1: scope:[__start]  from __start
  to:__start::@return
__start::@return: scope:[__start]  from __start::@1
  return 
  to:@return

SYMBOL TABLE SSA
__constant char * const SCREEN = (char *)$400+SIZEOF_CHAR*$64
__constant char SIZEOF_CHAR = 1
void __start()
void main()

Adding number conversion cast (unumber) SIZEOF_CHAR*$64 in 
Adding number conversion cast (unumber) $64 in 
Adding number conversion cast (unumber) 0 in SCREEN[0] = 'a'
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant pointer cast (char *) 1024
Simplifying constant integer cast SIZEOF_CHAR*(unumber)$64
Simplifying constant integer cast $64
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (char) $64
Finalized unsigned number type (char) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Simplifying expression containing zero SCREEN in [0] SCREEN[0] = 'a'
Successful SSA optimization PassNSimplifyExpressionWithZero
Removing unused procedure __start
Removing unused procedure block __start
Removing unused procedure block __start::@1
Removing unused procedure block __start::@return
Successful SSA optimization PassNEliminateEmptyStart
CALL GRAPH

Created 0 initial phi equivalence classes
Coalesced down to 0 phi equivalence classes

FINAL CONTROL FLOW GRAPH

void main()
main: scope:[main]  from
  [0] *SCREEN = 'a'
  to:main::@return
main::@return: scope:[main]  from main
  [1] return 
  to:@return


VARIABLE REGISTER WEIGHTS
void main()

Initial phi equivalence classes
Complete equivalence classes
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [0] *SCREEN = 'a' [ ] (  [ ] { }  ) always clobbers reg byte a 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 
Uplift Scope [] 

Uplifting [main] best 15 combination 
Uplifting [] best 15 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Support for sizeof() in const pointer definition
  // Upstart
  // Commodore 64 PRG executable file
.file [name="sizeof-in-const-pointer.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
  .const SIZEOF_CHAR = 1
  // Commodore 64 processor port
  .label SCREEN = $400+SIZEOF_CHAR*$64
.segment Code
  // main
main: {
    // [0] *SCREEN = 'a' -- _deref_pbuc1=vbuc2 
    lda #'a'
    sta SCREEN
    jmp __breturn
    // main::@return
  __breturn:
    // [1] return 
    rts
}
  // File Data

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __breturn
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction __breturn:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
__constant char * const SCREEN = (char *) 1024+SIZEOF_CHAR*$64
__constant char SIZEOF_CHAR = 1
void main()



FINAL ASSEMBLER
Score: 12

  // File Comments
// Support for sizeof() in const pointer definition
  // Upstart
  // Commodore 64 PRG executable file
.file [name="sizeof-in-const-pointer.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
  .const SIZEOF_CHAR = 1
  // Commodore 64 processor port
  .label SCREEN = $400+SIZEOF_CHAR*$64
.segment Code
  // main
main: {
    // SCREEN[0] = 'a'
    // [0] *SCREEN = 'a' -- _deref_pbuc1=vbuc2 
    lda #'a'
    sta SCREEN
    // main::@return
    // }
    // [1] return 
    rts
}
  // File Data

