Loading link script "ataritempest.ld"
Culled Empty Block (label) entryPoint::@2
Culled Empty Block (label) @1
Culled Empty Block (label) @2

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  to:@3

(void()) entryPoint()
entryPoint: scope:[entryPoint]  from
  (byte) entryPoint::i#0 ← (byte) 0
  to:entryPoint::@1
entryPoint::@1: scope:[entryPoint]  from entryPoint entryPoint::@1
  (byte) entryPoint::i#2 ← phi( entryPoint/(byte) entryPoint::i#0 entryPoint::@1/(byte) entryPoint::i#1 )
  *((const byte*) SCREEN + (byte) entryPoint::i#2) ← *((const byte*) MESSAGE + (byte) entryPoint::i#2)
  (byte) entryPoint::i#1 ← (byte) entryPoint::i#2 + rangenext(0,$31)
  (bool~) entryPoint::$0 ← (byte) entryPoint::i#1 != rangelast(0,$31)
  if((bool~) entryPoint::$0) goto entryPoint::@1
  to:entryPoint::@return
entryPoint::@return: scope:[entryPoint]  from entryPoint::@1
  return 
  to:@return

interrupt(HARDWARE_ALL)(void()) nmiHandler()
nmiHandler: scope:[nmiHandler]  from
  *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL)
  to:nmiHandler::@return
nmiHandler::@return: scope:[nmiHandler]  from nmiHandler
  return 
  to:@return

(void()) main()
main: scope:[main]  from @3
  *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL)
  to:main::@return
main::@return: scope:[main]  from main
  return 
  to:@return
@3: scope:[]  from @begin
  call main 
  to:@4
@4: scope:[]  from @3
  to:@end
@end: scope:[]  from @4

SYMBOL TABLE SSA
(label) @3
(label) @4
(label) @begin
(label) @end
(const byte*) BGCOL = (byte*)(number) $c01a
(const byte*) MESSAGE[]  = (string) "hello world"
(const byte*) SCREEN[(number) $32]  = { fill( $32, 0) }
(const void()**) VECTORS[]  = { &interrupt(HARDWARE_ALL)(void()) nmiHandler(), &(void()) entryPoint() }
(void()) entryPoint()
(bool~) entryPoint::$0
(label) entryPoint::@1
(label) entryPoint::@return
(byte) entryPoint::i
(byte) entryPoint::i#0
(byte) entryPoint::i#1
(byte) entryPoint::i#2
(void()) main()
(label) main::@return
interrupt(HARDWARE_ALL)(void()) nmiHandler()
(label) nmiHandler::@return

Simplifying constant pointer cast (byte*) 49178
Successful SSA optimization PassNCastSimplification
Simple Condition (bool~) entryPoint::$0 [5] if((byte) entryPoint::i#1!=rangelast(0,$31)) goto entryPoint::@1
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant (const byte) entryPoint::i#0 = 0
Successful SSA optimization Pass2ConstantIdentification
Resolved ranged next value [3] entryPoint::i#1 ← ++ entryPoint::i#2 to ++
Resolved ranged comparison value [5] if(entryPoint::i#1!=rangelast(0,$31)) goto entryPoint::@1 to (number) $32
Adding number conversion cast (unumber) $32 in if((byte) entryPoint::i#1!=(number) $32) goto entryPoint::@1
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast $32
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) $32
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inlining constant with var siblings (const byte) entryPoint::i#0
Constant inlined entryPoint::i#0 = (byte) 0
Successful SSA optimization Pass2ConstantInlining
Added new block during phi lifting entryPoint::@3(between entryPoint::@1 and entryPoint::@1)
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @3
Adding NOP phi() at start of @4
Adding NOP phi() at start of @end
Adding NOP phi() at start of entryPoint
CALL GRAPH
Calls in [] to main:2 

Created 1 initial phi equivalence classes
Coalesced [15] entryPoint::i#3 ← entryPoint::i#1
Coalesced down to 1 phi equivalence classes
Culled Empty Block (label) @4
Culled Empty Block (label) entryPoint::@3
Renumbering block @3 to @1
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 entryPoint

FINAL CONTROL FLOW GRAPH
@begin: scope:[]  from
  [0] phi()
  to:@1
@1: scope:[]  from @begin
  [1] phi()
  [2] call main 
  to:@end
@end: scope:[]  from @1
  [3] phi()

(void()) main()
main: scope:[main]  from @1
  [4] *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL)
  to:main::@return
main::@return: scope:[main]  from main
  [5] return 
  to:@return

interrupt(HARDWARE_ALL)(void()) nmiHandler()
nmiHandler: scope:[nmiHandler]  from
  [6] *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL)
  to:nmiHandler::@return
nmiHandler::@return: scope:[nmiHandler]  from nmiHandler
  [7] return 
  to:@return

(void()) entryPoint()
entryPoint: scope:[entryPoint]  from
  [8] phi()
  to:entryPoint::@1
entryPoint::@1: scope:[entryPoint]  from entryPoint entryPoint::@1
  [9] (byte) entryPoint::i#2 ← phi( entryPoint/(byte) 0 entryPoint::@1/(byte) entryPoint::i#1 )
  [10] *((const byte*) SCREEN + (byte) entryPoint::i#2) ← *((const byte*) MESSAGE + (byte) entryPoint::i#2)
  [11] (byte) entryPoint::i#1 ← ++ (byte) entryPoint::i#2
  [12] if((byte) entryPoint::i#1!=(byte) $32) goto entryPoint::@1
  to:entryPoint::@return
entryPoint::@return: scope:[entryPoint]  from entryPoint::@1
  [13] return 
  to:@return


VARIABLE REGISTER WEIGHTS
(void()) entryPoint()
(byte) entryPoint::i
(byte) entryPoint::i#1 16.5
(byte) entryPoint::i#2 22.0
(void()) main()
interrupt(HARDWARE_ALL)(void()) nmiHandler()

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

INITIAL ASM
Target platform is custom / MOS6502X
  // File Comments
// Atari Tempest ROM Development Template
// Each function of the kernal is a no-args function
// The functions are placed in the SYSCALLS table surrounded by JMP and NOP
  // Upstart
  .file [name="ataritempest.bin", type="bin", segments="AtariTempest"]
.segmentdef AtariTempest [segments="Code, RomData, Vectors"]
.segmentdef Code [start=$9000, min=$9000, max=$Fff9]
.segmentdef RomData [startAfter="Code", min=$9000, max=$Fff9]
.segmentdef RamData [start=$200, min=$200, max=$7ff]
.segmentdef Vectors [start=$FFFA, min=$FFFA, max=$FFFF, fill]
.segment Code
init:
  // Global Constants & labels
  .label BGCOL = $c01a
  // @begin
__bbegin:
  // [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
  jmp __b1
  // @1
__b1:
  // [2] call main 
  jsr main
  // [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
  jmp __bend
  // @end
__bend:
.segment Code
  // main
main: {
    // [4] *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc BGCOL
    jmp __breturn
    // main::@return
  __breturn:
    // [5] return 
    rts
}
  // nmiHandler
nmiHandler: {
    // entry interrupt(HARDWARE_ALL)
    sta rega+1
    stx regx+1
    sty regy+1
    // [6] *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc BGCOL
    jmp __breturn
    // nmiHandler::@return
  __breturn:
    // [7] return  - exit interrupt(HARDWARE_ALL)
  rega:
    lda #00
  regx:
    ldx #00
  regy:
    ldy #00
    rti
}
  // entryPoint
entryPoint: {
    .label i = 2
    // [9] phi from entryPoint to entryPoint::@1 [phi:entryPoint->entryPoint::@1]
  __b1_from_entryPoint:
    // [9] phi (byte) entryPoint::i#2 = (byte) 0 [phi:entryPoint->entryPoint::@1#0] -- vbuz1=vbuc1 
    lda #0
    sta.z i
    jmp __b1
    // [9] phi from entryPoint::@1 to entryPoint::@1 [phi:entryPoint::@1->entryPoint::@1]
  __b1_from___b1:
    // [9] phi (byte) entryPoint::i#2 = (byte) entryPoint::i#1 [phi:entryPoint::@1->entryPoint::@1#0] -- register_copy 
    jmp __b1
    // entryPoint::@1
  __b1:
    // [10] *((const byte*) SCREEN + (byte) entryPoint::i#2) ← *((const byte*) MESSAGE + (byte) entryPoint::i#2) -- pbuc1_derefidx_vbuz1=pbuc2_derefidx_vbuz1 
    ldy.z i
    lda MESSAGE,y
    sta SCREEN,y
    // [11] (byte) entryPoint::i#1 ← ++ (byte) entryPoint::i#2 -- vbuz1=_inc_vbuz1 
    inc.z i
    // [12] if((byte) entryPoint::i#1!=(byte) $32) goto entryPoint::@1 -- vbuz1_neq_vbuc1_then_la1 
    lda #$32
    cmp.z i
    bne __b1_from___b1
    jmp __breturn
    // entryPoint::@return
  __breturn:
    // [13] return 
    rts
}
  // File Data
.segment RomData
  MESSAGE: .text "hello world"
  .byte 0
.segment RamData
  SCREEN: .fill $32, 0
.segment Vectors
  VECTORS: .word nmiHandler, entryPoint

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [7] return  [ ] (  [ ] ) always clobbers reg byte a reg byte x reg byte y 
Statement [10] *((const byte*) SCREEN + (byte) entryPoint::i#2) ← *((const byte*) MESSAGE + (byte) entryPoint::i#2) [ entryPoint::i#2 ] (  [ entryPoint::i#2 ] ) always clobbers reg byte a 
Removing always clobbered register reg byte a as potential for zp[1]:2 [ entryPoint::i#2 entryPoint::i#1 ]
Statement [7] return  [ ] (  [ ] ) always clobbers reg byte a reg byte x reg byte y 
Statement [10] *((const byte*) SCREEN + (byte) entryPoint::i#2) ← *((const byte*) MESSAGE + (byte) entryPoint::i#2) [ entryPoint::i#2 ] (  [ entryPoint::i#2 ] ) always clobbers reg byte a 
Potential registers zp[1]:2 [ entryPoint::i#2 entryPoint::i#1 ] : zp[1]:2 , reg byte x , reg byte y , 

REGISTER UPLIFT SCOPES
Uplift Scope [entryPoint] 38.5: zp[1]:2 [ entryPoint::i#2 entryPoint::i#1 ] 
Uplift Scope [nmiHandler] 
Uplift Scope [main] 
Uplift Scope [] 

Uplifting [entryPoint] best 444 combination reg byte x [ entryPoint::i#2 entryPoint::i#1 ] 
Uplifting [nmiHandler] best 444 combination 
Uplifting [main] best 444 combination 
Uplifting [] best 444 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Atari Tempest ROM Development Template
// Each function of the kernal is a no-args function
// The functions are placed in the SYSCALLS table surrounded by JMP and NOP
  // Upstart
  .file [name="ataritempest.bin", type="bin", segments="AtariTempest"]
.segmentdef AtariTempest [segments="Code, RomData, Vectors"]
.segmentdef Code [start=$9000, min=$9000, max=$Fff9]
.segmentdef RomData [startAfter="Code", min=$9000, max=$Fff9]
.segmentdef RamData [start=$200, min=$200, max=$7ff]
.segmentdef Vectors [start=$FFFA, min=$FFFA, max=$FFFF, fill]
.segment Code
init:
  // Global Constants & labels
  .label BGCOL = $c01a
  // @begin
__bbegin:
  // [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
  jmp __b1
  // @1
__b1:
  // [2] call main 
  jsr main
  // [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
  jmp __bend
  // @end
__bend:
.segment Code
  // main
main: {
    // [4] *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc BGCOL
    jmp __breturn
    // main::@return
  __breturn:
    // [5] return 
    rts
}
  // nmiHandler
nmiHandler: {
    // entry interrupt(HARDWARE_ALL)
    sta rega+1
    stx regx+1
    sty regy+1
    // [6] *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc BGCOL
    jmp __breturn
    // nmiHandler::@return
  __breturn:
    // [7] return  - exit interrupt(HARDWARE_ALL)
  rega:
    lda #00
  regx:
    ldx #00
  regy:
    ldy #00
    rti
}
  // entryPoint
entryPoint: {
    // [9] phi from entryPoint to entryPoint::@1 [phi:entryPoint->entryPoint::@1]
  __b1_from_entryPoint:
    // [9] phi (byte) entryPoint::i#2 = (byte) 0 [phi:entryPoint->entryPoint::@1#0] -- vbuxx=vbuc1 
    ldx #0
    jmp __b1
    // [9] phi from entryPoint::@1 to entryPoint::@1 [phi:entryPoint::@1->entryPoint::@1]
  __b1_from___b1:
    // [9] phi (byte) entryPoint::i#2 = (byte) entryPoint::i#1 [phi:entryPoint::@1->entryPoint::@1#0] -- register_copy 
    jmp __b1
    // entryPoint::@1
  __b1:
    // [10] *((const byte*) SCREEN + (byte) entryPoint::i#2) ← *((const byte*) MESSAGE + (byte) entryPoint::i#2) -- pbuc1_derefidx_vbuxx=pbuc2_derefidx_vbuxx 
    lda MESSAGE,x
    sta SCREEN,x
    // [11] (byte) entryPoint::i#1 ← ++ (byte) entryPoint::i#2 -- vbuxx=_inc_vbuxx 
    inx
    // [12] if((byte) entryPoint::i#1!=(byte) $32) goto entryPoint::@1 -- vbuxx_neq_vbuc1_then_la1 
    cpx #$32
    bne __b1_from___b1
    jmp __breturn
    // entryPoint::@return
  __breturn:
    // [13] return 
    rts
}
  // File Data
.segment RomData
  MESSAGE: .text "hello world"
  .byte 0
.segment RamData
  SCREEN: .fill $32, 0
.segment Vectors
  VECTORS: .word nmiHandler, entryPoint

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __bend
Removing instruction jmp __breturn
Removing instruction jmp __breturn
Removing instruction jmp __b1
Removing instruction jmp __breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __b1_from___b1 with __b1
Removing instruction __bbegin:
Removing instruction __b1_from___bbegin:
Removing instruction __bend_from___b1:
Removing instruction __breturn:
Removing instruction __b1_from___b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction __b1:
Removing instruction __bend:
Removing instruction __breturn:
Removing instruction __b1_from_entryPoint:
Removing instruction __breturn:
Succesful ASM optimization Pass5UnusedLabelElimination
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction jmp __b1
Succesful ASM optimization Pass5NextJumpElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(const byte*) BGCOL = (byte*) 49178
(const byte*) MESSAGE[]  = (string) "hello world"
(const byte*) SCREEN[(number) $32]  = { fill( $32, 0) }
(const void()**) VECTORS[]  = { &interrupt(HARDWARE_ALL)(void()) nmiHandler(), &(void()) entryPoint() }
(void()) entryPoint()
(label) entryPoint::@1
(label) entryPoint::@return
(byte) entryPoint::i
(byte) entryPoint::i#1 reg byte x 16.5
(byte) entryPoint::i#2 reg byte x 22.0
(void()) main()
(label) main::@return
interrupt(HARDWARE_ALL)(void()) nmiHandler()
(label) nmiHandler::@return

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


FINAL ASSEMBLER
Score: 336

  // File Comments
// Atari Tempest ROM Development Template
// Each function of the kernal is a no-args function
// The functions are placed in the SYSCALLS table surrounded by JMP and NOP
  // Upstart
  .file [name="ataritempest.bin", type="bin", segments="AtariTempest"]
.segmentdef AtariTempest [segments="Code, RomData, Vectors"]
.segmentdef Code [start=$9000, min=$9000, max=$Fff9]
.segmentdef RomData [startAfter="Code", min=$9000, max=$Fff9]
.segmentdef RamData [start=$200, min=$200, max=$7ff]
.segmentdef Vectors [start=$FFFA, min=$FFFA, max=$FFFF, fill]
.segment Code
init:
  // Global Constants & labels
  .label BGCOL = $c01a
  // @begin
  // [1] phi from @begin to @1 [phi:@begin->@1]
  // @1
  // [2] call main 
  // [3] phi from @1 to @end [phi:@1->@end]
  // @end
.segment Code
  // main
main: {
    // (*BGCOL)++;
    // [4] *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc BGCOL
    // main::@return
    // }
    // [5] return 
    rts
}
  // nmiHandler
nmiHandler: {
    // entry interrupt(HARDWARE_ALL)
    sta rega+1
    stx regx+1
    sty regy+1
    // (*BGCOL)++;
    // [6] *((const byte*) BGCOL) ← ++ *((const byte*) BGCOL) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc BGCOL
    // nmiHandler::@return
    // }
    // [7] return  - exit interrupt(HARDWARE_ALL)
  rega:
    lda #00
  regx:
    ldx #00
  regy:
    ldy #00
    rti
}
  // entryPoint
entryPoint: {
    // [9] phi from entryPoint to entryPoint::@1 [phi:entryPoint->entryPoint::@1]
    // [9] phi (byte) entryPoint::i#2 = (byte) 0 [phi:entryPoint->entryPoint::@1#0] -- vbuxx=vbuc1 
    ldx #0
    // [9] phi from entryPoint::@1 to entryPoint::@1 [phi:entryPoint::@1->entryPoint::@1]
    // [9] phi (byte) entryPoint::i#2 = (byte) entryPoint::i#1 [phi:entryPoint::@1->entryPoint::@1#0] -- register_copy 
    // entryPoint::@1
  __b1:
    // SCREEN[i] = MESSAGE[i]
    // [10] *((const byte*) SCREEN + (byte) entryPoint::i#2) ← *((const byte*) MESSAGE + (byte) entryPoint::i#2) -- pbuc1_derefidx_vbuxx=pbuc2_derefidx_vbuxx 
    lda MESSAGE,x
    sta SCREEN,x
    // for( char i:0..49)
    // [11] (byte) entryPoint::i#1 ← ++ (byte) entryPoint::i#2 -- vbuxx=_inc_vbuxx 
    inx
    // [12] if((byte) entryPoint::i#1!=(byte) $32) goto entryPoint::@1 -- vbuxx_neq_vbuc1_then_la1 
    cpx #$32
    bne __b1
    // entryPoint::@return
    // }
    // [13] return 
    rts
}
  // File Data
.segment RomData
  MESSAGE: .text "hello world"
  .byte 0
.segment RamData
  SCREEN: .fill $32, 0
.segment Vectors
  VECTORS: .word nmiHandler, entryPoint

