Fixing constant pointer addition (const word*) seq+(number) 0
Fixing constant pointer addition (const struct Setting*) settings+(number) 0
Fixing pointer array-indexing *(*((struct Setting*) main::setting).buf + (byte) main::i)
Fixing pointer array-indexing *((const word*) SCREEN + (byte) main::i)
Replacing struct member reference *((struct Setting*) main::setting).len with member unwinding reference *((byte*~) main::$2)
Replacing struct member reference *((struct Setting*) main::setting).buf with member unwinding reference *((word**~) main::$3)
Identified constant variable (struct Setting*) main::setting
Identified constant variable (byte) main::idx
Culled Empty Block (label) main::@4
Culled Empty Block (label) main::@3
Culled Empty Block (label) main::@5
Culled Empty Block (label) main::@6

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  to:@1

(void()) main()
main: scope:[main]  from @1
  (byte) main::i#0 ← (byte) 0
  to:main::@1
main::@1: scope:[main]  from main main::@2
  (byte) main::i#2 ← phi( main/(byte) main::i#0 main::@2/(byte) main::i#1 )
  (byte*~) main::$2 ← (byte*)(const struct Setting*) main::setting + (const byte) OFFSET_STRUCT_SETTING_LEN
  (bool~) main::$0 ← (byte) main::i#2 < *((byte*~) main::$2)
  if((bool~) main::$0) goto main::@2
  to:main::@return
main::@2: scope:[main]  from main::@1
  (byte) main::i#3 ← phi( main::@1/(byte) main::i#2 )
  (byte~) main::$1 ← (byte) main::i#3 * (const byte) SIZEOF_WORD
  (word**~) main::$3 ← (word**)(const struct Setting*) main::setting + (const byte) OFFSET_STRUCT_SETTING_BUF
  *((const word*) SCREEN + (byte~) main::$1) ← *(*((word**~) main::$3) + (byte~) main::$1)
  (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 
  to:@2
@2: scope:[]  from @1
  to:@end
@end: scope:[]  from @2

SYMBOL TABLE SSA
(label) @1
(label) @2
(label) @begin
(label) @end
(const byte) OFFSET_STRUCT_SETTING_BUF = (byte) 1
(const byte) OFFSET_STRUCT_SETTING_LEN = (byte) 0
(const word*) SCREEN = (word*)(number) $400
(const byte) SIZEOF_STRUCT_SETTING = (byte) 3
(const byte) SIZEOF_WORD = (byte) 2
(word*) Setting::buf
(byte) Setting::len
(void()) main()
(bool~) main::$0
(byte~) main::$1
(byte*~) main::$2
(word**~) main::$3
(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
(const struct Setting*) main::setting = (const struct Setting*) settings+(number) 0*(const byte) SIZEOF_STRUCT_SETTING
(const word*) seq[]  = { (word) 1, (word) 2, (word) 3 }
(const struct Setting*) settings[]  = { { len: (byte) 3, buf: (const word*) seq+(number) 0*(const byte) SIZEOF_WORD } }

Adding number conversion cast (unumber) 0*SIZEOF_WORD in 
Adding number conversion cast (unumber) 0 in 
Adding number conversion cast (unumber) 0*SIZEOF_STRUCT_SETTING in 
Adding number conversion cast (unumber) 0 in 
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant pointer cast (word*) 1024
Simplifying constant integer cast (unumber)(number) 0*(const byte) SIZEOF_WORD
Simplifying constant integer cast 0
Simplifying constant integer cast (unumber)(number) 0*(const byte) SIZEOF_STRUCT_SETTING
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias (byte) main::i#2 = (byte) main::i#3 
Successful SSA optimization Pass2AliasElimination
Simple Condition (bool~) main::$0 [4] if((byte) main::i#2<*((byte*~) main::$2)) goto main::@2
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant right-side identified [2] (byte*~) main::$2 ← (byte*)(const struct Setting*) main::setting + (const byte) OFFSET_STRUCT_SETTING_LEN
Constant right-side identified [6] (word**~) main::$3 ← (word**)(const struct Setting*) main::setting + (const byte) OFFSET_STRUCT_SETTING_BUF
Successful SSA optimization Pass2ConstantRValueConsolidation
Constant (const byte) main::i#0 = 0
Constant (const byte*) main::$2 = (byte*)main::setting+OFFSET_STRUCT_SETTING_LEN
Constant (const word**) main::$3 = (word**)main::setting+OFFSET_STRUCT_SETTING_BUF
Successful SSA optimization Pass2ConstantIdentification
Simplifying constant evaluating to zero (byte) 0*(const byte) SIZEOF_WORD in 
Simplifying constant evaluating to zero (byte) 0*(const byte) SIZEOF_STRUCT_SETTING in 
Successful SSA optimization PassNSimplifyConstantZero
Simplifying expression containing zero seq in 
Simplifying expression containing zero settings in 
Simplifying expression containing zero (byte*)main::setting in 
Successful SSA optimization PassNSimplifyExpressionWithZero
Eliminating unused constant (const byte) SIZEOF_STRUCT_SETTING
Eliminating unused constant (const byte) OFFSET_STRUCT_SETTING_LEN
Successful SSA optimization PassNEliminateUnusedVars
Rewriting multiplication to use shift [2] (byte~) main::$1 ← (byte) main::i#2 * (const byte) SIZEOF_WORD
Successful SSA optimization Pass2MultiplyToShiftRewriting
Inlining constant with var siblings (const byte) main::i#0
Constant inlined main::i#0 = (byte) 0
Constant inlined main::$3 = (word**)(const struct Setting*) settings+(const byte) OFFSET_STRUCT_SETTING_BUF
Constant inlined main::$2 = (byte*)(const struct Setting*) settings
Constant inlined main::setting = (const struct Setting*) settings
Successful SSA optimization Pass2ConstantInlining
Eliminating unused constant (const byte) SIZEOF_WORD
Successful SSA optimization PassNEliminateUnusedVars
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @2
Adding NOP phi() at start of @end
Adding NOP phi() at start of main
CALL GRAPH
Calls in [] to main:2 

Created 1 initial phi equivalence classes
Coalesced [12] main::i#4 ← main::i#1
Coalesced down to 1 phi equivalence classes
Culled Empty Block (label) @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

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] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@2
  [5] (byte) main::i#2 ← phi( main/(byte) 0 main::@2/(byte) main::i#1 )
  [6] if((byte) main::i#2<*((byte*)(const struct Setting*) settings)) goto main::@2
  to:main::@return
main::@return: scope:[main]  from main::@1
  [7] return 
  to:@return
main::@2: scope:[main]  from main::@1
  [8] (byte~) main::$1 ← (byte) main::i#2 << (byte) 1
  [9] *((const word*) SCREEN + (byte~) main::$1) ← *(*((word**)(const struct Setting*) settings+(const byte) OFFSET_STRUCT_SETTING_BUF) + (byte~) main::$1)
  [10] (byte) main::i#1 ← ++ (byte) main::i#2
  to:main::@1


VARIABLE REGISTER WEIGHTS
(word*) Setting::buf
(byte) Setting::len
(void()) main()
(byte~) main::$1 33.0
(byte) main::i
(byte) main::i#1 22.0
(byte) main::i#2 11.0

Initial phi equivalence classes
[ main::i#2 main::i#1 ]
Added variable main::$1 to live range equivalence class [ main::$1 ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
[ main::$1 ]
Allocated zp[1]:2 [ main::i#2 main::i#1 ]
Allocated zp[1]:3 [ main::$1 ]

INITIAL ASM
Target platform is c64basic / MOS6502X
  // File Comments
// Demonstrates problem with conditions using negated struct references
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .label SCREEN = $400
  .const OFFSET_STRUCT_SETTING_BUF = 1
  // @begin
__bbegin:
  // [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
  jmp __b1
  // @1
__b1:
  // [2] call main 
  // [4] phi from @1 to main [phi:@1->main]
main_from___b1:
  jsr main
  // [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
  jmp __bend
  // @end
__bend:
  // main
main: {
    .label __1 = 3
    .label i = 2
    // [5] phi from main to main::@1 [phi:main->main::@1]
  __b1_from_main:
    // [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1 
    lda #0
    sta.z i
    jmp __b1
    // main::@1
  __b1:
    // [6] if((byte) main::i#2<*((byte*)(const struct Setting*) settings)) goto main::@2 -- vbuz1_lt__deref_pbuc1_then_la1 
    lda.z i
    cmp settings
    bcc __b2
    jmp __breturn
    // main::@return
  __breturn:
    // [7] return 
    rts
    // main::@2
  __b2:
    // [8] (byte~) main::$1 ← (byte) main::i#2 << (byte) 1 -- vbuz1=vbuz2_rol_1 
    lda.z i
    asl
    sta.z __1
    // [9] *((const word*) SCREEN + (byte~) main::$1) ← *(*((word**)(const struct Setting*) settings+(const byte) OFFSET_STRUCT_SETTING_BUF) + (byte~) main::$1) -- pwuc1_derefidx_vbuz1=(_deref_pptc2)_derefidx_vbuz1 
    ldy.z __1
    lda settings+OFFSET_STRUCT_SETTING_BUF
    sta.z $fe
    lda settings+OFFSET_STRUCT_SETTING_BUF+1
    sta.z $ff
    lda ($fe),y
    sta SCREEN,y
    iny
    lda ($fe),y
    sta SCREEN,y
    // [10] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1 
    inc.z i
    // [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
  __b1_from___b2:
    // [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy 
    jmp __b1
}
  // File Data
  seq: .word 1, 2, 3
  settings: .byte 3
  .word seq

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [8] (byte~) main::$1 ← (byte) main::i#2 << (byte) 1 [ main::i#2 main::$1 ] ( main:2 [ main::i#2 main::$1 ] ) always clobbers reg byte a 
Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::i#2 main::i#1 ]
Statement [9] *((const word*) SCREEN + (byte~) main::$1) ← *(*((word**)(const struct Setting*) settings+(const byte) OFFSET_STRUCT_SETTING_BUF) + (byte~) main::$1) [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a reg byte y 
Removing always clobbered register reg byte y as potential for zp[1]:2 [ main::i#2 main::i#1 ]
Statement [8] (byte~) main::$1 ← (byte) main::i#2 << (byte) 1 [ main::i#2 main::$1 ] ( main:2 [ main::i#2 main::$1 ] ) always clobbers reg byte a 
Statement [9] *((const word*) SCREEN + (byte~) main::$1) ← *(*((word**)(const struct Setting*) settings+(const byte) OFFSET_STRUCT_SETTING_BUF) + (byte~) main::$1) [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a reg byte y 
Potential registers zp[1]:2 [ main::i#2 main::i#1 ] : zp[1]:2 , reg byte x , 
Potential registers zp[1]:3 [ main::$1 ] : zp[1]:3 , reg byte a , reg byte x , reg byte y , 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 33: zp[1]:2 [ main::i#2 main::i#1 ] 33: zp[1]:3 [ main::$1 ] 
Uplift Scope [Setting] 
Uplift Scope [] 

Uplifting [main] best 643 combination reg byte x [ main::i#2 main::i#1 ] reg byte a [ main::$1 ] 
Uplifting [Setting] best 643 combination 
Uplifting [] best 643 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Demonstrates problem with conditions using negated struct references
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .label SCREEN = $400
  .const OFFSET_STRUCT_SETTING_BUF = 1
  // @begin
__bbegin:
  // [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
  jmp __b1
  // @1
__b1:
  // [2] call main 
  // [4] phi from @1 to main [phi:@1->main]
main_from___b1:
  jsr main
  // [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
  jmp __bend
  // @end
__bend:
  // main
main: {
    // [5] phi from main to main::@1 [phi:main->main::@1]
  __b1_from_main:
    // [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
    ldx #0
    jmp __b1
    // main::@1
  __b1:
    // [6] if((byte) main::i#2<*((byte*)(const struct Setting*) settings)) goto main::@2 -- vbuxx_lt__deref_pbuc1_then_la1 
    cpx settings
    bcc __b2
    jmp __breturn
    // main::@return
  __breturn:
    // [7] return 
    rts
    // main::@2
  __b2:
    // [8] (byte~) main::$1 ← (byte) main::i#2 << (byte) 1 -- vbuaa=vbuxx_rol_1 
    txa
    asl
    // [9] *((const word*) SCREEN + (byte~) main::$1) ← *(*((word**)(const struct Setting*) settings+(const byte) OFFSET_STRUCT_SETTING_BUF) + (byte~) main::$1) -- pwuc1_derefidx_vbuaa=(_deref_pptc2)_derefidx_vbuaa 
    tay
    lda settings+OFFSET_STRUCT_SETTING_BUF
    sta.z $fe
    lda settings+OFFSET_STRUCT_SETTING_BUF+1
    sta.z $ff
    lda ($fe),y
    sta SCREEN,y
    iny
    lda ($fe),y
    sta SCREEN,y
    // [10] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx 
    inx
    // [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
  __b1_from___b2:
    // [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy 
    jmp __b1
}
  // File Data
  seq: .word 1, 2, 3
  settings: .byte 3
  .word seq

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __bend
Removing instruction jmp __b1
Removing instruction jmp __breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __bbegin with __b1
Removing instruction __bbegin:
Removing instruction __b1_from___bbegin:
Removing instruction main_from___b1:
Removing instruction __bend_from___b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction __bend:
Removing instruction __b1_from_main:
Removing instruction __breturn:
Removing instruction __b1_from___b2:
Succesful ASM optimization Pass5UnusedLabelElimination
Updating BasicUpstart to call main directly
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction __b1:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(const byte) OFFSET_STRUCT_SETTING_BUF = (byte) 1
(const word*) SCREEN = (word*) 1024
(word*) Setting::buf
(byte) Setting::len
(void()) main()
(byte~) main::$1 reg byte a 33.0
(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 11.0
(const word*) seq[]  = { (word) 1, (word) 2, (word) 3 }
(const struct Setting*) settings[]  = { { len: (byte) 3, buf: (const word*) seq } }

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


FINAL ASSEMBLER
Score: 571

  // File Comments
// Demonstrates problem with conditions using negated struct references
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  .label SCREEN = $400
  .const OFFSET_STRUCT_SETTING_BUF = 1
  // @begin
  // [1] phi from @begin to @1 [phi:@begin->@1]
  // @1
  // [2] call main 
  // [4] phi from @1 to main [phi:@1->main]
  // [3] phi from @1 to @end [phi:@1->@end]
  // @end
  // main
main: {
    // [5] phi from main to main::@1 [phi:main->main::@1]
    // [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
    ldx #0
    // main::@1
  __b1:
    // for( char i=0;i<setting->len;i++)
    // [6] if((byte) main::i#2<*((byte*)(const struct Setting*) settings)) goto main::@2 -- vbuxx_lt__deref_pbuc1_then_la1 
    cpx settings
    bcc __b2
    // main::@return
    // }
    // [7] return 
    rts
    // main::@2
  __b2:
    // SCREEN[i] = setting->buf[i]
    // [8] (byte~) main::$1 ← (byte) main::i#2 << (byte) 1 -- vbuaa=vbuxx_rol_1 
    txa
    asl
    // [9] *((const word*) SCREEN + (byte~) main::$1) ← *(*((word**)(const struct Setting*) settings+(const byte) OFFSET_STRUCT_SETTING_BUF) + (byte~) main::$1) -- pwuc1_derefidx_vbuaa=(_deref_pptc2)_derefidx_vbuaa 
    tay
    lda settings+OFFSET_STRUCT_SETTING_BUF
    sta.z $fe
    lda settings+OFFSET_STRUCT_SETTING_BUF+1
    sta.z $ff
    lda ($fe),y
    sta SCREEN,y
    iny
    lda ($fe),y
    sta SCREEN,y
    // for( char i=0;i<setting->len;i++)
    // [10] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx 
    inx
    // [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
    // [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy 
    jmp __b1
}
  // File Data
  seq: .word 1, 2, 3
  settings: .byte 3
  .word seq

