Adding value bulk copy *(&(struct Point) point2) ← memcpy(*(&(struct Point) point1), struct Point, (const byte) SIZEOF_STRUCT_POINT)
Replacing struct member reference (struct Point) point1.x with member unwinding reference *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X)
Replacing struct member reference (struct Point) point1.y with member unwinding reference *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y)
Replacing struct member reference (struct Point) point2.x with member unwinding reference *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X)
Replacing struct member reference (struct Point) point1.x with member unwinding reference *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X)
Replacing struct member reference (struct Point) point1.y with member unwinding reference *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y)
Replacing struct member reference (struct Point) point2.x with member unwinding reference *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X)
Replacing struct member reference (struct Point) point2.y with member unwinding reference *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_Y)

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

(void()) main()
main: scope:[main]  from @1
  *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X) ← (number) 2
  *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (number) 3
  *(&(struct Point) point2) ← memcpy(*(&(struct Point) point1), struct Point, (const byte) SIZEOF_STRUCT_POINT)
  (struct Point) point2 ← struct-unwound {*(&(struct Point) point2)}
  *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X) ← (number) 4
  *((const byte*) main::SCREEN + (number) 0) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X)
  *((const byte*) main::SCREEN + (number) 1) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y)
  *((const byte*) main::SCREEN + (number) 2) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X)
  *((const byte*) main::SCREEN + (number) 3) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_Y)
  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
(const byte) OFFSET_STRUCT_POINT_X = (byte) 0
(const byte) OFFSET_STRUCT_POINT_Y = (byte) 1
(byte) Point::x
(byte) Point::y
(const byte) SIZEOF_STRUCT_POINT = (byte) 2
(void()) main()
(label) main::@return
(const byte*) main::SCREEN = (byte*)(number) $400
(struct Point) point1 loadstore = {}
(struct Point) point2 loadstore = {}

Adding number conversion cast (unumber) 2 in *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X) ← (number) 2
Adding number conversion cast (unumber) 3 in *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (number) 3
Adding number conversion cast (unumber) 4 in *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X) ← (number) 4
Adding number conversion cast (unumber) 0 in *((const byte*) main::SCREEN + (number) 0) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X)
Adding number conversion cast (unumber) 1 in *((const byte*) main::SCREEN + (number) 1) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y)
Adding number conversion cast (unumber) 2 in *((const byte*) main::SCREEN + (number) 2) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X)
Adding number conversion cast (unumber) 3 in *((const byte*) main::SCREEN + (number) 3) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_Y)
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X) ← (unumber)(number) 2
Inlining cast *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (unumber)(number) 3
Inlining cast *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X) ← (unumber)(number) 4
Successful SSA optimization Pass2InlineCast
Simplifying constant pointer cast (byte*) 1024
Simplifying constant integer cast 2
Simplifying constant integer cast 3
Simplifying constant integer cast 4
Simplifying constant integer cast 0
Simplifying constant integer cast 1
Simplifying constant integer cast 2
Simplifying constant integer cast 3
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 2
Finalized unsigned number type (byte) 3
Finalized unsigned number type (byte) 4
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 1
Finalized unsigned number type (byte) 2
Finalized unsigned number type (byte) 3
Successful SSA optimization PassNFinalizeNumberTypeConversions
Removing C-classic struct-unwound assignment [3] (struct Point) point2 ← struct-unwound {*(&(struct Point) point2)}
Simplifying expression containing zero (byte*)&point1 in [0] *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X) ← (byte) 2
Simplifying expression containing zero (byte*)&point2 in [4] *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X) ← (byte) 4
Simplifying expression containing zero (byte*)&point1 in [5] *((const byte*) main::SCREEN + (byte) 0) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_X)
Simplifying expression containing zero main::SCREEN in [5] *((const byte*) main::SCREEN + (byte) 0) ← *((byte*)&(struct Point) point1)
Simplifying expression containing zero (byte*)&point2 in [7] *((const byte*) main::SCREEN + (byte) 2) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_X)
Successful SSA optimization PassNSimplifyExpressionWithZero
Eliminating unused constant (const byte) OFFSET_STRUCT_POINT_X
Successful SSA optimization PassNEliminateUnusedVars
Consolidated array index constant in *(main::SCREEN+1)
Consolidated array index constant in *(main::SCREEN+2)
Consolidated array index constant in *(main::SCREEN+3)
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] *((byte*)&(struct Point) point1) ← (byte) 2
  [5] *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (byte) 3
  [6] *(&(struct Point) point2) ← memcpy(*(&(struct Point) point1), struct Point, (const byte) SIZEOF_STRUCT_POINT)
  [7] *((byte*)&(struct Point) point2) ← (byte) 4
  [8] *((const byte*) main::SCREEN) ← *((byte*)&(struct Point) point1)
  [9] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y)
  [10] *((const byte*) main::SCREEN+(byte) 2) ← *((byte*)&(struct Point) point2)
  [11] *((const byte*) main::SCREEN+(byte) 3) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_Y)
  to:main::@return
main::@return: scope:[main]  from main
  [12] return 
  to:@return


VARIABLE REGISTER WEIGHTS
(byte) Point::x
(byte) Point::y
(void()) main()
(struct Point) point1 loadstore = {}
(struct Point) point2 loadstore = {}

Initial phi equivalence classes
Added variable point1 to live range equivalence class [ point1 ]
Added variable point2 to live range equivalence class [ point2 ]
Complete equivalence classes
[ point1 ]
[ point2 ]
Allocated mem[2] [ point1 ]
Allocated mem[2] [ point2 ]

INITIAL ASM
Target platform is c64basic / MOS6502X
  // File Comments
// Minimal struct - two instances being copied (using assignment)
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .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 SCREEN = $400
    // [4] *((byte*)&(struct Point) point1) ← (byte) 2 -- _deref_pbuc1=vbuc2 
    lda #2
    sta point1
    // [5] *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (byte) 3 -- _deref_pbuc1=vbuc2 
    lda #3
    sta point1+OFFSET_STRUCT_POINT_Y
    // [6] *(&(struct Point) point2) ← memcpy(*(&(struct Point) point1), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3 
    ldy #SIZEOF_STRUCT_POINT
  !:
    lda point1-1,y
    sta point2-1,y
    dey
    bne !-
    // [7] *((byte*)&(struct Point) point2) ← (byte) 4 -- _deref_pbuc1=vbuc2 
    lda #4
    sta point2
    // [8] *((const byte*) main::SCREEN) ← *((byte*)&(struct Point) point1) -- _deref_pbuc1=_deref_pbuc2 
    lda point1
    sta SCREEN
    // [9] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point1+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    // [10] *((const byte*) main::SCREEN+(byte) 2) ← *((byte*)&(struct Point) point2) -- _deref_pbuc1=_deref_pbuc2 
    lda point2
    sta SCREEN+2
    // [11] *((const byte*) main::SCREEN+(byte) 3) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point2+OFFSET_STRUCT_POINT_Y
    sta SCREEN+3
    jmp __breturn
    // main::@return
  __breturn:
    // [12] return 
    rts
}
  // File Data
  point1: .fill SIZEOF_STRUCT_POINT, 0
  point2: .fill SIZEOF_STRUCT_POINT, 0

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [4] *((byte*)&(struct Point) point1) ← (byte) 2 [ point1 point2 ] ( main:2 [ point1 point2 ] ) always clobbers reg byte a 
Statement [5] *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (byte) 3 [ point1 point2 ] ( main:2 [ point1 point2 ] ) always clobbers reg byte a 
Statement [6] *(&(struct Point) point2) ← memcpy(*(&(struct Point) point1), struct Point, (const byte) SIZEOF_STRUCT_POINT) [ point1 point2 ] ( main:2 [ point1 point2 ] ) always clobbers reg byte a reg byte y 
Statement [7] *((byte*)&(struct Point) point2) ← (byte) 4 [ point1 point2 ] ( main:2 [ point1 point2 ] ) always clobbers reg byte a 
Statement [8] *((const byte*) main::SCREEN) ← *((byte*)&(struct Point) point1) [ point1 point2 ] ( main:2 [ point1 point2 ] ) always clobbers reg byte a 
Statement [9] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) [ point2 ] ( main:2 [ point2 ] ) always clobbers reg byte a 
Statement [10] *((const byte*) main::SCREEN+(byte) 2) ← *((byte*)&(struct Point) point2) [ point2 ] ( main:2 [ point2 ] ) always clobbers reg byte a 
Statement [11] *((const byte*) main::SCREEN+(byte) 3) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_Y) [ ] ( main:2 [ ] ) always clobbers reg byte a 
Potential registers mem[2] [ point1 ] : mem[2] , 
Potential registers mem[2] [ point2 ] : mem[2] , 

REGISTER UPLIFT SCOPES
Uplift Scope [Point] 
Uplift Scope [main] 
Uplift Scope [] 0: mem[2] [ point1 ] 0: mem[2] [ point2 ] 

Uplifting [Point] best 87 combination 
Uplifting [main] best 87 combination 
Uplifting [] best 87 combination mem[2] [ point1 ] mem[2] [ point2 ] 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Minimal struct - two instances being copied (using assignment)
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .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 SCREEN = $400
    // [4] *((byte*)&(struct Point) point1) ← (byte) 2 -- _deref_pbuc1=vbuc2 
    lda #2
    sta point1
    // [5] *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (byte) 3 -- _deref_pbuc1=vbuc2 
    lda #3
    sta point1+OFFSET_STRUCT_POINT_Y
    // [6] *(&(struct Point) point2) ← memcpy(*(&(struct Point) point1), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3 
    ldy #SIZEOF_STRUCT_POINT
  !:
    lda point1-1,y
    sta point2-1,y
    dey
    bne !-
    // [7] *((byte*)&(struct Point) point2) ← (byte) 4 -- _deref_pbuc1=vbuc2 
    lda #4
    sta point2
    // [8] *((const byte*) main::SCREEN) ← *((byte*)&(struct Point) point1) -- _deref_pbuc1=_deref_pbuc2 
    lda point1
    sta SCREEN
    // [9] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point1+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    // [10] *((const byte*) main::SCREEN+(byte) 2) ← *((byte*)&(struct Point) point2) -- _deref_pbuc1=_deref_pbuc2 
    lda point2
    sta SCREEN+2
    // [11] *((const byte*) main::SCREEN+(byte) 3) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point2+OFFSET_STRUCT_POINT_Y
    sta SCREEN+3
    jmp __breturn
    // main::@return
  __breturn:
    // [12] return 
    rts
}
  // File Data
  point1: .fill SIZEOF_STRUCT_POINT, 0
  point2: .fill SIZEOF_STRUCT_POINT, 0

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
(label) @1
(label) @begin
(label) @end
(const byte) OFFSET_STRUCT_POINT_Y = (byte) 1
(byte) Point::x
(byte) Point::y
(const byte) SIZEOF_STRUCT_POINT = (byte) 2
(void()) main()
(label) main::@return
(const byte*) main::SCREEN = (byte*) 1024
(struct Point) point1 loadstore mem[2] = {}
(struct Point) point2 loadstore mem[2] = {}

mem[2] [ point1 ]
mem[2] [ point2 ]


FINAL ASSEMBLER
Score: 72

  // File Comments
// Minimal struct - two instances being copied (using assignment)
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  .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 SCREEN = $400
    // point1.x = 2
    // [4] *((byte*)&(struct Point) point1) ← (byte) 2 -- _deref_pbuc1=vbuc2 
    lda #2
    sta point1
    // point1.y = 3
    // [5] *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (byte) 3 -- _deref_pbuc1=vbuc2 
    lda #3
    sta point1+OFFSET_STRUCT_POINT_Y
    // point2 = point1
    // [6] *(&(struct Point) point2) ← memcpy(*(&(struct Point) point1), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3 
    ldy #SIZEOF_STRUCT_POINT
  !:
    lda point1-1,y
    sta point2-1,y
    dey
    bne !-
    // point2.x = 4
    // [7] *((byte*)&(struct Point) point2) ← (byte) 4 -- _deref_pbuc1=vbuc2 
    lda #4
    sta point2
    // SCREEN[0] = point1.x
    // [8] *((const byte*) main::SCREEN) ← *((byte*)&(struct Point) point1) -- _deref_pbuc1=_deref_pbuc2 
    lda point1
    sta SCREEN
    // SCREEN[1] = point1.y
    // [9] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)&(struct Point) point1+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point1+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    // SCREEN[2] = point2.x
    // [10] *((const byte*) main::SCREEN+(byte) 2) ← *((byte*)&(struct Point) point2) -- _deref_pbuc1=_deref_pbuc2 
    lda point2
    sta SCREEN+2
    // SCREEN[3] = point2.y
    // [11] *((const byte*) main::SCREEN+(byte) 3) ← *((byte*)&(struct Point) point2+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point2+OFFSET_STRUCT_POINT_Y
    sta SCREEN+3
    // main::@return
    // }
    // [12] return 
    rts
}
  // File Data
  point1: .fill SIZEOF_STRUCT_POINT, 0
  point2: .fill SIZEOF_STRUCT_POINT, 0

