kickc/src/test/ref/inline-asm-refout.log

CONTROL FLOW GRAPH SSA

void main()
main: scope:[main]  from __start
  *(main::SCREEN+$28) = table[0]
  asm { ldx#0 !: ldatable,x staSCREEN+1,x inx cpx#4 bne!-  }
  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
void __start()
void main()
const nomodify byte* main::SCREEN = (byte*)$400
const byte* table[]  = "cml!"z

Adding number conversion cast (unumber) 0 in *(main::SCREEN+$28) = table[0]
Adding number conversion cast (unumber) $28 in *(main::SCREEN+$28) = table[(unumber)0]
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant pointer cast (byte*) 1024
Simplifying constant integer cast 0
Simplifying constant integer cast $28
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) $28
Successful SSA optimization PassNFinalizeNumberTypeConversions
Simplifying expression containing zero table in [0] *(main::SCREEN+$28) = table[0]
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] *(main::SCREEN+$28) = *table
  asm { ldx#0 !: ldatable,x staSCREEN+1,x inx cpx#4 bne!-  }
  to:main::@return
main::@return: scope:[main]  from main
  [2] return 
  to:@return


VARIABLE REGISTER WEIGHTS
void main()

Initial phi equivalence classes
Complete equivalence classes
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [0] *(main::SCREEN+$28) = *table [ ] (  [ ] { }  ) always clobbers reg byte a 
Statement asm { ldx#0 !: ldatable,x staSCREEN+1,x inx cpx#4 bne!-  } always clobbers reg byte a reg byte x 

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

Uplifting [main] best 35 combination 
Uplifting [] best 35 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Illustrates how inline assembler can reference data from the outside program
  // Upstart
  // Commodore 64 PRG executable file
.file [name="inline-asm-refout.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
.segment Code
  // main
main: {
    .label SCREEN = $400
    // [0] *(main::SCREEN+$28) = *table -- _deref_pbuc1=_deref_pbuc2 
    lda table
    sta SCREEN+$28
    // asm { ldx#0 !: ldatable,x staSCREEN+1,x inx cpx#4 bne!-  }
    ldx #0
  !:
    lda table,x
    sta SCREEN+1,x
    inx
    cpx #4
    bne !-
    jmp __breturn
    // main::@return
  __breturn:
    // [2] return 
    rts
}
  // File Data
.segment Data
  table: .text "cml!"

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

FINAL SYMBOL TABLE
void main()
const nomodify byte* main::SCREEN = (byte*) 1024
const byte* table[]  = "cml!"z



FINAL ASSEMBLER
Score: 32

  // File Comments
// Illustrates how inline assembler can reference data from the outside program
  // Upstart
  // Commodore 64 PRG executable file
.file [name="inline-asm-refout.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
.segment Code
  // main
main: {
    .label SCREEN = $400
    // *(SCREEN+40) = table[0]
    // [0] *(main::SCREEN+$28) = *table -- _deref_pbuc1=_deref_pbuc2 
    lda table
    sta SCREEN+$28
    // asm
    // asm { ldx#0 !: ldatable,x staSCREEN+1,x inx cpx#4 bne!-  }
    ldx #0
  !:
    lda table,x
    sta SCREEN+1,x
    inx
    cpx #4
    bne !-
    // main::@return
    // }
    // [2] return 
    rts
}
  // File Data
.segment Data
  table: .text "cml!"