Setting struct to load/store in variable affected by address-of (struct Point*) main::ptr ← &(struct Point) main::point1
Adding value bulk copy *(&(struct Point) main::point1) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT)
Replacing struct member reference *((struct Point*) main::ptr).x with member unwinding reference *((byte*~) main::$0)
Replacing struct member reference *((struct Point*) main::ptr).y with member unwinding reference *((byte*~) main::$1)
Identified constant variable (struct Point*) main::ptr

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

(void()) main()
main: scope:[main]  from @1
  *(&(struct Point) main::point1) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT)
  (struct Point) main::point1 ← struct-unwound {*(&(struct Point) main::point1)}
  (byte*~) main::$0 ← (byte*)(const struct Point*) main::ptr + (const byte) OFFSET_STRUCT_POINT_X
  *((const byte*) SCREEN + (number) 0) ← *((byte*~) main::$0)
  (byte*~) main::$1 ← (byte*)(const struct Point*) main::ptr + (const byte) OFFSET_STRUCT_POINT_Y
  *((const byte*) SCREEN + (number) 1) ← *((byte*~) main::$1)
  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
(const struct Point) $0 = { x: (byte) 2, y: (byte) 3 }
(label) @1
(label) @2
(label) @begin
(label) @end
(const byte) OFFSET_STRUCT_POINT_X = (byte) 0
(const byte) OFFSET_STRUCT_POINT_Y = (byte) 1
(byte) Point::x
(byte) Point::y
(const byte*) SCREEN = (byte*)(number) $400
(const byte) SIZEOF_STRUCT_POINT = (byte) 2
(void()) main()
(byte*~) main::$0
(byte*~) main::$1
(label) main::@return
(struct Point) main::point1 loadstore
(const struct Point*) main::ptr = &(struct Point) main::point1

Adding number conversion cast (unumber) 0 in *((const byte*) SCREEN + (number) 0) ← *((byte*~) main::$0)
Adding number conversion cast (unumber) 1 in *((const byte*) SCREEN + (number) 1) ← *((byte*~) main::$1)
Successful SSA optimization PassNAddNumberTypeConversions
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
Removing C-classic struct-unwound assignment [1] (struct Point) main::point1 ← struct-unwound {*(&(struct Point) main::point1)}
Constant right-side identified [2] (byte*~) main::$0 ← (byte*)(const struct Point*) main::ptr + (const byte) OFFSET_STRUCT_POINT_X
Constant right-side identified [4] (byte*~) main::$1 ← (byte*)(const struct Point*) main::ptr + (const byte) OFFSET_STRUCT_POINT_Y
Successful SSA optimization Pass2ConstantRValueConsolidation
Constant (const byte*) main::$0 = (byte*)main::ptr+OFFSET_STRUCT_POINT_X
Constant (const byte*) main::$1 = (byte*)main::ptr+OFFSET_STRUCT_POINT_Y
Successful SSA optimization Pass2ConstantIdentification
Simplifying expression containing zero (byte*)main::ptr in 
Simplifying expression containing zero SCREEN in [3] *((const byte*) SCREEN + (byte) 0) ← *((const byte*) main::$0)
Successful SSA optimization PassNSimplifyExpressionWithZero
Eliminating unused constant (const byte) OFFSET_STRUCT_POINT_X
Successful SSA optimization PassNEliminateUnusedVars
Constant inlined main::$1 = (byte*)(const struct Point*) main::ptr+(const byte) OFFSET_STRUCT_POINT_Y
Constant inlined main::$0 = (byte*)(const struct Point*) main::ptr
Successful SSA optimization Pass2ConstantInlining
Consolidated array index constant in *(SCREEN+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()

(void()) main()
main: scope:[main]  from @1
  [4] *(&(struct Point) main::point1) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT)
  [5] *((const byte*) SCREEN) ← *((byte*)(const struct Point*) main::ptr)
  [6] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::ptr+(const byte) OFFSET_STRUCT_POINT_Y)
  to:main::@return
main::@return: scope:[main]  from main
  [7] return 
  to:@return


VARIABLE REGISTER WEIGHTS
(byte) Point::x
(byte) Point::y
(void()) main()
(struct Point) main::point1 loadstore

Initial phi equivalence classes
Added variable main::point1 to live range equivalence class [ main::point1 ]
Complete equivalence classes
[ main::point1 ]
Allocated zp[2]:2 [ main::point1 ]

INITIAL ASM
Target platform is c64basic / MOS6502X
  // File Comments
// Minimal struct with C-Standard behavior - address-of
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .label SCREEN = $400
  .const SIZEOF_STRUCT_POINT = 2
  .const OFFSET_STRUCT_POINT_Y = 1
  // @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 ptr = point1
    .label point1 = 2
    // [4] *(&(struct Point) main::point1) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3 
    ldy #SIZEOF_STRUCT_POINT
  !:
    lda __0-1,y
    sta point1-1,y
    dey
    bne !-
    // [5] *((const byte*) SCREEN) ← *((byte*)(const struct Point*) main::ptr) -- _deref_pbuc1=_deref_pbuc2 
    lda.z ptr
    sta SCREEN
    // [6] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::ptr+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda ptr+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    jmp __breturn
    // main::@return
  __breturn:
    // [7] return 
    rts
}
  // File Data
  __0: .byte 2, 3

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [4] *(&(struct Point) main::point1) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT) [ ] ( main:2 [ ] ) always clobbers reg byte a reg byte y 
Statement [5] *((const byte*) SCREEN) ← *((byte*)(const struct Point*) main::ptr) [ ] ( main:2 [ ] ) always clobbers reg byte a 
Statement [6] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::ptr+(const byte) OFFSET_STRUCT_POINT_Y) [ ] ( main:2 [ ] ) always clobbers reg byte a 
Potential registers zp[2]:2 [ main::point1 ] : zp[2]:2 , 

REGISTER UPLIFT SCOPES
Uplift Scope [Point] 
Uplift Scope [main] 0: zp[2]:2 [ main::point1 ] 
Uplift Scope [] 

Uplifting [Point] best 52 combination 
Uplifting [main] best 52 combination zp[2]:2 [ main::point1 ] 
Uplifting [] best 52 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Minimal struct with C-Standard behavior - address-of
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .label SCREEN = $400
  .const SIZEOF_STRUCT_POINT = 2
  .const OFFSET_STRUCT_POINT_Y = 1
  // @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 ptr = point1
    .label point1 = 2
    // [4] *(&(struct Point) main::point1) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3 
    ldy #SIZEOF_STRUCT_POINT
  !:
    lda __0-1,y
    sta point1-1,y
    dey
    bne !-
    // [5] *((const byte*) SCREEN) ← *((byte*)(const struct Point*) main::ptr) -- _deref_pbuc1=_deref_pbuc2 
    lda.z ptr
    sta SCREEN
    // [6] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::ptr+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda ptr+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    jmp __breturn
    // main::@return
  __breturn:
    // [7] return 
    rts
}
  // File Data
  __0: .byte 2, 3

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __bend
Removing instruction jmp __breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __bbegin with __b1
Removing instruction __bbegin:
Removing instruction __b1_from___bbegin:
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 __b1:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(const struct Point) $0 = { x: (byte) 2, y: (byte) 3 }
(label) @1
(label) @begin
(label) @end
(const byte) OFFSET_STRUCT_POINT_Y = (byte) 1
(byte) Point::x
(byte) Point::y
(const byte*) SCREEN = (byte*) 1024
(const byte) SIZEOF_STRUCT_POINT = (byte) 2
(void()) main()
(label) main::@return
(struct Point) main::point1 loadstore zp[2]:2
(const struct Point*) main::ptr = &(struct Point) main::point1

zp[2]:2 [ main::point1 ]


FINAL ASSEMBLER
Score: 37

  // File Comments
// Minimal struct with C-Standard behavior - address-of
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  .label SCREEN = $400
  .const SIZEOF_STRUCT_POINT = 2
  .const OFFSET_STRUCT_POINT_Y = 1
  // @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 ptr = point1
    .label point1 = 2
    // point1 = { 2, 3 }
    // [4] *(&(struct Point) main::point1) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3 
    ldy #SIZEOF_STRUCT_POINT
  !:
    lda __0-1,y
    sta point1-1,y
    dey
    bne !-
    // SCREEN[0] = ptr->x
    // [5] *((const byte*) SCREEN) ← *((byte*)(const struct Point*) main::ptr) -- _deref_pbuc1=_deref_pbuc2 
    lda.z ptr
    sta SCREEN
    // SCREEN[1] = ptr->y
    // [6] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::ptr+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda ptr+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    // main::@return
    // }
    // [7] return 
    rts
}
  // File Data
  __0: .byte 2, 3

