kickc/src/test/ref/struct-ptr-13.log

Rewriting struct pointer member access *((struct Point*) points).x
Rewriting struct pointer member access *((struct Point*) points).x
Rewriting struct pointer member access *((struct Point*) points).y
Rewriting struct pointer member access *((struct Point*) points).y
Rewriting struct pointer member access *((struct Point*) points).x
Rewriting struct pointer member access *((struct Point*) points).y
Identified constant variable (struct Point*) points

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  (struct Point*) points ← ((struct Point*)) (number) $1000
  to:@1

(void()) main()
main: scope:[main]  from @1
  (byte*) main::$0 ← (byte*)(struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
  (byte*) main::$1 ← (byte*)(struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
  *((byte*) main::$1) ← *((byte*) main::$0) + (number) 5
  (byte*) main::$2 ← (byte*)(struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
  (byte*) main::$3 ← (byte*)(struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
  *((byte*) main::$3) ← *((byte*) main::$2) + (number) 5
  (byte*) main::SCREEN ← ((byte*)) (number) $400
  (byte*) main::$4 ← (byte*)(struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
  *((byte*) main::SCREEN + (number) 0) ← *((byte*) main::$4)
  (byte*) main::$5 ← (byte*)(struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
  *((byte*) main::SCREEN + (number) 1) ← *((byte*) main::$5)
  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
(void()) main()
(byte*) main::$0
(byte*) main::$1
(byte*) main::$2
(byte*) main::$3
(byte*) main::$4
(byte*) main::$5
(label) main::@return
(byte*) main::SCREEN
(struct Point*) points

Adding number conversion cast (unumber) 5 in *((byte*) main::$1) ← *((byte*) main::$0) + (number) 5
Adding number conversion cast (unumber) 5 in *((byte*) main::$3) ← *((byte*) main::$2) + (number) 5
Adding number conversion cast (unumber) 0 in *((byte*) main::SCREEN + (number) 0) ← *((byte*) main::$4)
Adding number conversion cast (unumber) 1 in *((byte*) main::SCREEN + (number) 1) ← *((byte*) main::$5)
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast (struct Point*) points ← (struct Point*)(number) $1000
Inlining cast (byte*) main::SCREEN ← (byte*)(number) $400
Successful SSA optimization Pass2InlineCast
Simplifying constant pointer cast (struct Point*) 4096
Simplifying constant integer cast 5
Simplifying constant integer cast 5
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) 5
Finalized unsigned number type (byte) 5
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 1
Successful SSA optimization PassNFinalizeNumberTypeConversions
Constant (const struct Point*) points = (struct Point*) 4096
Constant (const byte*) main::SCREEN = (byte*) 1024
Successful SSA optimization Pass2ConstantIdentification
Constant value identified (byte*)points in [1] (byte*) main::$0 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
Constant value identified (byte*)points in [2] (byte*) main::$1 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
Constant value identified (byte*)points in [4] (byte*) main::$2 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
Constant value identified (byte*)points in [5] (byte*) main::$3 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
Constant value identified (byte*)points in [8] (byte*) main::$4 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
Constant value identified (byte*)points in [10] (byte*) main::$5 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
Successful SSA optimization Pass2ConstantValues
Converting *(pointer+n) to pointer[n] [3] *((byte*) main::$1) ← *((byte*) main::$0) + (byte) 5  -- *((byte*)points + OFFSET_STRUCT_POINT_X)
Converting *(pointer+n) to pointer[n] [3] *((byte*) main::$1) ← *((byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X) + (byte) 5  -- *((byte*)points + OFFSET_STRUCT_POINT_X)
Converting *(pointer+n) to pointer[n] [6] *((byte*) main::$3) ← *((byte*) main::$2) + (byte) 5  -- *((byte*)points + OFFSET_STRUCT_POINT_Y)
Converting *(pointer+n) to pointer[n] [6] *((byte*) main::$3) ← *((byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y) + (byte) 5  -- *((byte*)points + OFFSET_STRUCT_POINT_Y)
Converting *(pointer+n) to pointer[n] [9] *((const byte*) main::SCREEN + (byte) 0) ← *((byte*) main::$4)  -- *((byte*)points + OFFSET_STRUCT_POINT_X)
Converting *(pointer+n) to pointer[n] [11] *((const byte*) main::SCREEN + (byte) 1) ← *((byte*) main::$5)  -- *((byte*)points + OFFSET_STRUCT_POINT_Y)
Successful SSA optimization Pass2InlineDerefIdx
Simplifying expression containing zero (byte*)points in [1] (byte*) main::$0 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
Simplifying expression containing zero (byte*)points in [2] (byte*) main::$1 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
Simplifying expression containing zero (byte*)points in [3] *((byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X) ← *((byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X) + (byte) 5
Simplifying expression containing zero (byte*)points in [3] *((byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X) ← *((byte*)(const struct Point*) points) + (byte) 5
Simplifying expression containing zero (byte*)points in [8] (byte*) main::$4 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X
Simplifying expression containing zero (byte*)points in [9] *((const byte*) main::SCREEN + (byte) 0) ← *((byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_X)
Simplifying expression containing zero main::SCREEN in [9] *((const byte*) main::SCREEN + (byte) 0) ← *((byte*)(const struct Point*) points)
Successful SSA optimization PassNSimplifyExpressionWithZero
Eliminating unused variable (byte*) main::$0 and assignment [0] (byte*) main::$0 ← (byte*)(const struct Point*) points
Eliminating unused variable (byte*) main::$1 and assignment [1] (byte*) main::$1 ← (byte*)(const struct Point*) points
Eliminating unused variable (byte*) main::$2 and assignment [3] (byte*) main::$2 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
Eliminating unused variable (byte*) main::$3 and assignment [4] (byte*) main::$3 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
Eliminating unused variable (byte*) main::$4 and assignment [6] (byte*) main::$4 ← (byte*)(const struct Point*) points
Eliminating unused variable (byte*) main::$5 and assignment [8] (byte*) main::$5 ← (byte*)(const struct Point*) points + (const byte) OFFSET_STRUCT_POINT_Y
Eliminating unused constant (const byte) OFFSET_STRUCT_POINT_X
Successful SSA optimization PassNEliminateUnusedVars
Consolidated array index constant in *((byte*)points+OFFSET_STRUCT_POINT_Y)
Consolidated array index constant in *((byte*)points+OFFSET_STRUCT_POINT_Y)
Consolidated array index constant in *((byte*)points+OFFSET_STRUCT_POINT_Y)
Consolidated array index constant in *(main::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] *((byte*)(const struct Point*) points) ← *((byte*)(const struct Point*) points) + (byte) 5
  [5] *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) + (byte) 5
  [6] *((const byte*) main::SCREEN) ← *((byte*)(const struct Point*) points)
  [7] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y)
  to:main::@return
main::@return: scope:[main]  from main
  [8] return 
  to:@return


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

Initial phi equivalence classes
Complete equivalence classes

INITIAL ASM
Target platform is c64basic / MOS6502X
  // File Comments
// Minimal struct - modifying pointer to struct in memory using arrow operator
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .const OFFSET_STRUCT_POINT_Y = 1
  .label points = $1000
  // @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*)(const struct Point*) points) ← *((byte*)(const struct Point*) points) + (byte) 5 -- _deref_pbuc1=_deref_pbuc1_plus_vbuc2 
    lda #5
    clc
    adc points
    sta points
    // [5] *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) + (byte) 5 -- _deref_pbuc1=_deref_pbuc2_plus_vbuc3 
    lda #5
    clc
    adc points+OFFSET_STRUCT_POINT_Y
    sta points+OFFSET_STRUCT_POINT_Y
    // [6] *((const byte*) main::SCREEN) ← *((byte*)(const struct Point*) points) -- _deref_pbuc1=_deref_pbuc2 
    lda points
    sta SCREEN
    // [7] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda points+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    jmp breturn
    // main::@return
  breturn:
    // [8] return 
    rts
}
  // File Data

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [4] *((byte*)(const struct Point*) points) ← *((byte*)(const struct Point*) points) + (byte) 5 [ ] ( main:2 [ ] ) always clobbers reg byte a 
Statement [5] *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) + (byte) 5 [ ] ( main:2 [ ] ) always clobbers reg byte a 
Statement [6] *((const byte*) main::SCREEN) ← *((byte*)(const struct Point*) points) [ ] ( main:2 [ ] ) always clobbers reg byte a 
Statement [7] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) [ ] ( main:2 [ ] ) always clobbers reg byte a 

REGISTER UPLIFT SCOPES
Uplift Scope [Point] 
Uplift Scope [main] 
Uplift Scope [] 

Uplifting [Point] best 61 combination 
Uplifting [main] best 61 combination 
Uplifting [] best 61 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Minimal struct - modifying pointer to struct in memory using arrow operator
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .const OFFSET_STRUCT_POINT_Y = 1
  .label points = $1000
  // @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*)(const struct Point*) points) ← *((byte*)(const struct Point*) points) + (byte) 5 -- _deref_pbuc1=_deref_pbuc1_plus_vbuc2 
    lda #5
    clc
    adc points
    sta points
    // [5] *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) + (byte) 5 -- _deref_pbuc1=_deref_pbuc2_plus_vbuc3 
    lda #5
    clc
    adc points+OFFSET_STRUCT_POINT_Y
    sta points+OFFSET_STRUCT_POINT_Y
    // [6] *((const byte*) main::SCREEN) ← *((byte*)(const struct Point*) points) -- _deref_pbuc1=_deref_pbuc2 
    lda points
    sta SCREEN
    // [7] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda points+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    jmp breturn
    // main::@return
  breturn:
    // [8] 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
(const byte) OFFSET_STRUCT_POINT_Y OFFSET_STRUCT_POINT_Y = (byte) 1
(byte) Point::x
(byte) Point::y
(void()) main()
(label) main::@return
(const byte*) main::SCREEN SCREEN = (byte*) 1024
(const struct Point*) points points = (struct Point*) 4096



FINAL ASSEMBLER
Score: 46

  // File Comments
// Minimal struct - modifying pointer to struct in memory using arrow operator
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  .const OFFSET_STRUCT_POINT_Y = 1
  .label points = $1000
  // @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
    // points->x += 5
    // [4] *((byte*)(const struct Point*) points) ← *((byte*)(const struct Point*) points) + (byte) 5 -- _deref_pbuc1=_deref_pbuc1_plus_vbuc2 
    lda #5
    clc
    adc points
    sta points
    // points->y += 5
    // [5] *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) + (byte) 5 -- _deref_pbuc1=_deref_pbuc2_plus_vbuc3 
    lda #5
    clc
    adc points+OFFSET_STRUCT_POINT_Y
    sta points+OFFSET_STRUCT_POINT_Y
    // SCREEN[0] = points->x
    // [6] *((const byte*) main::SCREEN) ← *((byte*)(const struct Point*) points) -- _deref_pbuc1=_deref_pbuc2 
    lda points
    sta SCREEN
    // SCREEN[1] = points->y
    // [7] *((const byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) points+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2 
    lda points+OFFSET_STRUCT_POINT_Y
    sta SCREEN+1
    // main::@return
    // }
    // [8] return 
    rts
}
  // File Data