Setting inferred volatile on symbol affected by address-of (word*~) main::$0 ← & (word) main::p

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  to:@1
main: scope:[main]  from @1
  (word) main::p#0 ← ((word)) { (number) 2, (number) 3 }
  (word*~) main::$0 ← & (word) main::p#0
  (word*) main::q#0 ← (word*~) main::$0
  (byte*) main::SCREEN#0 ← ((byte*)) (number) $400
  (byte~) main::$1 ← < *((word*) main::q#0)
  *((byte*) main::SCREEN#0 + (number) 0) ← (byte~) main::$1
  (byte~) main::$2 ← > *((word*) main::q#0)
  *((byte*) main::SCREEN#0 + (number) 1) ← (byte~) main::$2
  to:main::@return
main::@return: scope:[main]  from main
  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
(void()) main()
(word*~) main::$0
(byte~) main::$1
(byte~) main::$2
(label) main::@return
(byte*) main::SCREEN
(byte*) main::SCREEN#0
(word) main::p
(word) main::p#0
(word*) main::q
(word*) main::q#0

Fixing inline constructor with main::$3 ← (byte)2 w= (byte)3
Successful SSA optimization Pass2FixInlineConstructorsNew
Adding number conversion cast (unumber) 0 in *((byte*) main::SCREEN#0 + (number) 0) ← (byte~) main::$1
Adding number conversion cast (unumber) 1 in *((byte*) main::SCREEN#0 + (number) 1) ← (byte~) main::$2
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast (byte*) main::SCREEN#0 ← (byte*)(number) $400
Successful SSA optimization Pass2InlineCast
Simplifying constant integer cast 2
Simplifying constant integer cast 3
Simplifying constant pointer cast (byte*) 1024
Simplifying constant integer cast 0
Simplifying constant integer cast 1
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 1
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias candidate removed (volatile)(word) main::p#0 = (word~) main::$3 
Alias (word*) main::q#0 = (word*~) main::$0 
Successful SSA optimization Pass2AliasElimination
Alias candidate removed (volatile)(word) main::p#0 = (word~) main::$3 
Constant right-side identified [0] (word~) main::$3 ← (byte) 2 w= (byte) 3
Constant right-side identified [2] (word*) main::q#0 ← & (word) main::p#0
Successful SSA optimization Pass2ConstantRValueConsolidation
Constant (const word*) main::q#0 = &main::p#0
Constant (const byte*) main::SCREEN#0 = (byte*) 1024
Successful SSA optimization Pass2ConstantIdentification
Simplifying expression containing zero main::SCREEN#0 in [6] *((const byte*) main::SCREEN#0 + (byte) 0) ← (byte~) main::$1
Successful SSA optimization PassNSimplifyExpressionWithZero
Adding number conversion cast (unumber) 2*$100+3 in (word~) main::$3 ← (byte) 2*(number) $100+(byte) 3
Adding number conversion cast (unumber) 2*$100 in (word~) main::$3 ← ((unumber)) (byte) 2*(number) $100+(byte) 3
Adding number conversion cast (unumber) $100 in (word~) main::$3 ← ((unumber)) (unumber)(byte) 2*(number) $100+(byte) 3
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast (word~) main::$3 ← (unumber)(unumber)(byte) 2*(unumber)(number) $100+(byte) 3
Successful SSA optimization Pass2InlineCast
Simplifying constant integer cast (unumber)(byte) 2*(unumber)(number) $100+(byte) 3
Simplifying constant integer cast (byte) 2*(unumber)(number) $100
Simplifying constant integer cast $100
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (word) $100
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias candidate removed (volatile)(word) main::p#0 = (word~) main::$3 
Constant (const word) main::$3 = 2*$100+3
Successful SSA optimization Pass2ConstantIdentification
Constant inlined main::$3 = (byte) 2*(word) $100+(byte) 3
Successful SSA optimization Pass2ConstantInlining
Consolidated array index constant in *(main::SCREEN#0+1)
Successful SSA optimization Pass2ConstantAdditionElimination
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
CALL GRAPH
Calls in [] to main:2 

Created 0 initial phi equivalence classes
Coalesced down to 0 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

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()
main: scope:[main]  from @1
  [4] (word) main::p#0 ← (byte) 2*(word) $100+(byte) 3
  [5] (byte~) main::$1 ← < *((const word*) main::q#0)
  [6] *((const byte*) main::SCREEN#0) ← (byte~) main::$1
  [7] (byte~) main::$2 ← > *((const word*) main::q#0)
  [8] *((const byte*) main::SCREEN#0+(byte) 1) ← (byte~) main::$2
  to:main::@return
main::@return: scope:[main]  from main
  [9] return 
  to:@return


VARIABLE REGISTER WEIGHTS
(void()) main()
(byte~) main::$1 4.0
(byte~) main::$2 4.0
(byte*) main::SCREEN
(word) main::p
(word) main::p#0 20.0
(word*) main::q

Initial phi equivalence classes
Added variable main::$1 to zero page equivalence class [ main::$1 ]
Added variable main::$2 to zero page equivalence class [ main::$2 ]
Complete equivalence classes
[ main::p#0 ]
[ main::$1 ]
[ main::$2 ]
Allocated zp ZP_WORD:2 [ main::p#0 ]
Allocated zp ZP_BYTE:4 [ main::$1 ]
Allocated zp ZP_BYTE:5 [ main::$2 ]

INITIAL ASM
  // File Comments
// Reference file for Minimal struct -  using address-of
  // Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  // @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:
  // main
main: {
    .label q = p
    .label SCREEN = $400
    .label _1 = 4
    .label _2 = 5
    .label p = 2
    // [4] (word) main::p#0 ← (byte) 2*(word) $100+(byte) 3 -- vwuz1=vwuc1 
    lda #<2*$100+3
    sta p
    lda #>2*$100+3
    sta p+1
    // [5] (byte~) main::$1 ← < *((const word*) main::q#0) -- vbuz1=_lo__deref_pwuc1 
    lda q
    sta _1
    // [6] *((const byte*) main::SCREEN#0) ← (byte~) main::$1 -- _deref_pbuc1=vbuz1 
    lda _1
    sta SCREEN
    // [7] (byte~) main::$2 ← > *((const word*) main::q#0) -- vbuz1=_hi__deref_pwuc1 
    lda q+1
    sta _2
    // [8] *((const byte*) main::SCREEN#0+(byte) 1) ← (byte~) main::$2 -- _deref_pbuc1=vbuz1 
    lda _2
    sta SCREEN+1
    jmp breturn
    // main::@return
  breturn:
    // [9] return 
    rts
}
  // File Data

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [4] (word) main::p#0 ← (byte) 2*(word) $100+(byte) 3 [ ] ( main:2 [ ] ) always clobbers reg byte a 
Potential registers zp ZP_WORD:2 [ main::p#0 ] : zp ZP_WORD:2 , 
Potential registers zp ZP_BYTE:4 [ main::$1 ] : zp ZP_BYTE:4 , reg byte a , reg byte x , reg byte y , 
Potential registers zp ZP_BYTE:5 [ main::$2 ] : zp ZP_BYTE:5 , reg byte a , reg byte x , reg byte y , 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 20: zp ZP_WORD:2 [ main::p#0 ] 4: zp ZP_BYTE:4 [ main::$1 ] 4: zp ZP_BYTE:5 [ main::$2 ] 
Uplift Scope [] 

Uplifting [main] best 47 combination zp ZP_WORD:2 [ main::p#0 ] reg byte a [ main::$1 ] reg byte a [ main::$2 ] 
Uplifting [] best 47 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Reference file for Minimal struct -  using address-of
  // Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  // @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:
  // main
main: {
    .label q = p
    .label SCREEN = $400
    .label p = 2
    // [4] (word) main::p#0 ← (byte) 2*(word) $100+(byte) 3 -- vwuz1=vwuc1 
    lda #<2*$100+3
    sta p
    lda #>2*$100+3
    sta p+1
    // [5] (byte~) main::$1 ← < *((const word*) main::q#0) -- vbuaa=_lo__deref_pwuc1 
    lda q
    // [6] *((const byte*) main::SCREEN#0) ← (byte~) main::$1 -- _deref_pbuc1=vbuaa 
    sta SCREEN
    // [7] (byte~) main::$2 ← > *((const word*) main::q#0) -- vbuaa=_hi__deref_pwuc1 
    lda q+1
    // [8] *((const byte*) main::SCREEN#0+(byte) 1) ← (byte~) main::$2 -- _deref_pbuc1=vbuaa 
    sta SCREEN+1
    jmp breturn
    // main::@return
  breturn:
    // [9] return 
    rts
}
  // File Data

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp breturn
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction b1_from_bbegin:
Removing instruction b1:
Removing instruction bend_from_b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction bend:
Removing instruction breturn:
Succesful ASM optimization Pass5UnusedLabelElimination
Updating BasicUpstart to call main directly
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction bbegin:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(void()) main()
(byte~) main::$1 reg byte a 4.0
(byte~) main::$2 reg byte a 4.0
(label) main::@return
(byte*) main::SCREEN
(const byte*) main::SCREEN#0 SCREEN = (byte*) 1024
(word) main::p
(word) main::p#0 p zp ZP_WORD:2 20.0
(word*) main::q
(const word*) main::q#0 q = &(word) main::p#0

zp ZP_WORD:2 [ main::p#0 ]
reg byte a [ main::$1 ]
reg byte a [ main::$2 ]


FINAL ASSEMBLER
Score: 32

  // File Comments
// Reference file for Minimal struct -  using address-of
  // Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  // @begin
  // [1] phi from @begin to @1 [phi:@begin->@1]
  // @1
  // [2] call main 
  // [3] phi from @1 to @end [phi:@1->@end]
  // @end
  // main
main: {
    .label q = p
    .label SCREEN = $400
    .label p = 2
    // p = { 2, 3 }
    // [4] (word) main::p#0 ← (byte) 2*(word) $100+(byte) 3 -- vwuz1=vwuc1 
    lda #<2*$100+3
    sta p
    lda #>2*$100+3
    sta p+1
    // <*q
    // [5] (byte~) main::$1 ← < *((const word*) main::q#0) -- vbuaa=_lo__deref_pwuc1 
    lda q
    // SCREEN[0] = <*q
    // [6] *((const byte*) main::SCREEN#0) ← (byte~) main::$1 -- _deref_pbuc1=vbuaa 
    sta SCREEN
    // >*q
    // [7] (byte~) main::$2 ← > *((const word*) main::q#0) -- vbuaa=_hi__deref_pwuc1 
    lda q+1
    // SCREEN[1] = >*q
    // [8] *((const byte*) main::SCREEN#0+(byte) 1) ← (byte~) main::$2 -- _deref_pbuc1=vbuaa 
    sta SCREEN+1
    // main::@return
    // }
    // [9] return 
    rts
}
  // File Data

