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

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

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

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


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

Initial phi equivalence classes
Added variable main::point1 to live range equivalence class [ main::point1 ]
Added variable main::point2 to live range equivalence class [ main::point2 ]
Complete equivalence classes
[ main::point1 ]
[ main::point2 ]
Allocated zp[2]:2 [ main::point1 ]
Allocated zp[2]:4 [ main::point2 ]

INITIAL ASM
Target platform is c64basic / MOS6502X
  // File Comments
// Minimal struct with C-Standard behavior - copying
  // 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 point1 = 2
    .label point2 = 4
    // [4] *(&(struct Point) main::point1) ← memset(struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_memset_vbuc2 
    ldy #SIZEOF_STRUCT_POINT
    lda #0
  !:
    dey
    sta point1,y
    bne !-
    // [5] *((byte*)&(struct Point) main::point1) ← (byte) 2 -- _deref_pbuc1=vbuc2 
    lda #2
    sta.z point1
    // [6] *((byte*)&(struct Point) main::point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (byte) 3 -- _deref_pbuc1=vbuc2 
    lda #3
    sta point1+OFFSET_STRUCT_POINT_Y
    // [7] *(&(struct Point) main::point2) ← memcpy(*(&(struct Point) main::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 !-
    // [8] *((const byte*) SCREEN) ← *((byte*)&(struct Point) main::point2) -- _deref_pbuc1=_deref_pbuc2 
    lda.z point2
    sta SCREEN
    // [9] *((const byte*) SCREEN+(byte) 1) ← *((byte*)&(struct Point) main::point2+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point2+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    jmp __breturn
    // main::@return
  __breturn:
    // [10] return 
    rts
}
  // File Data

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

REGISTER UPLIFT SCOPES
Uplift Scope [Point] 
Uplift Scope [main] 0: zp[2]:2 [ main::point1 ] 0: zp[2]:4 [ main::point2 ] 
Uplift Scope [] 

Uplifting [Point] best 76 combination 
Uplifting [main] best 76 combination zp[2]:2 [ main::point1 ] zp[2]:4 [ main::point2 ] 
Uplifting [] best 76 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Minimal struct with C-Standard behavior - copying
  // 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 point1 = 2
    .label point2 = 4
    // [4] *(&(struct Point) main::point1) ← memset(struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_memset_vbuc2 
    ldy #SIZEOF_STRUCT_POINT
    lda #0
  !:
    dey
    sta point1,y
    bne !-
    // [5] *((byte*)&(struct Point) main::point1) ← (byte) 2 -- _deref_pbuc1=vbuc2 
    lda #2
    sta.z point1
    // [6] *((byte*)&(struct Point) main::point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (byte) 3 -- _deref_pbuc1=vbuc2 
    lda #3
    sta point1+OFFSET_STRUCT_POINT_Y
    // [7] *(&(struct Point) main::point2) ← memcpy(*(&(struct Point) main::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 !-
    // [8] *((const byte*) SCREEN) ← *((byte*)&(struct Point) main::point2) -- _deref_pbuc1=_deref_pbuc2 
    lda.z point2
    sta SCREEN
    // [9] *((const byte*) SCREEN+(byte) 1) ← *((byte*)&(struct Point) main::point2+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point2+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    jmp __breturn
    // main::@return
  __breturn:
    // [10] return 
    rts
}
  // File Data

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*) SCREEN = (byte*) 1024
(const byte) SIZEOF_STRUCT_POINT = (byte) 2
(void()) main()
(label) main::@return
(struct Point) main::point1 loadstore zp[2]:2
(struct Point) main::point2 loadstore zp[2]:4

zp[2]:2 [ main::point1 ]
zp[2]:4 [ main::point2 ]


FINAL ASSEMBLER
Score: 61

  // File Comments
// Minimal struct with C-Standard behavior - copying
  // 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 point1 = 2
    .label point2 = 4
    // point1
    // [4] *(&(struct Point) main::point1) ← memset(struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_memset_vbuc2 
    ldy #SIZEOF_STRUCT_POINT
    lda #0
  !:
    dey
    sta point1,y
    bne !-
    // point1.x = 2
    // [5] *((byte*)&(struct Point) main::point1) ← (byte) 2 -- _deref_pbuc1=vbuc2 
    lda #2
    sta.z point1
    // point1.y = 3
    // [6] *((byte*)&(struct Point) main::point1+(const byte) OFFSET_STRUCT_POINT_Y) ← (byte) 3 -- _deref_pbuc1=vbuc2 
    lda #3
    sta point1+OFFSET_STRUCT_POINT_Y
    // point2 = point1
    // [7] *(&(struct Point) main::point2) ← memcpy(*(&(struct Point) main::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 !-
    // SCREEN[0] = point2.x
    // [8] *((const byte*) SCREEN) ← *((byte*)&(struct Point) main::point2) -- _deref_pbuc1=_deref_pbuc2 
    lda.z point2
    sta SCREEN
    // SCREEN[1] = point2.y
    // [9] *((const byte*) SCREEN+(byte) 1) ← *((byte*)&(struct Point) main::point2+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda point2+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    // main::@return
    // }
    // [10] return 
    rts
}
  // File Data

