2020-03-29 19:00:25 +00:00
|
|
|
Setting struct to load/store in variable affected by address-of (struct Point*) main::q ← &(volatile struct Point) main::p
|
2019-06-16 17:54:03 +00:00
|
|
|
|
|
|
|
CONTROL FLOW GRAPH SSA
|
2019-09-18 21:00:30 +00:00
|
|
|
|
|
|
|
(void()) main()
|
2020-06-27 19:18:00 +00:00
|
|
|
main: scope:[main] from _start
|
2020-03-29 19:00:25 +00:00
|
|
|
*(&(volatile struct Point) main::p) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT)
|
|
|
|
(volatile struct Point) main::p ← struct-unwound {*(&(volatile struct Point) main::p)}
|
2020-04-19 09:05:54 +00:00
|
|
|
(byte*~) main::$2 ← (byte*)(const struct Point*) main::q
|
|
|
|
(byte*~) main::$0 ← (byte*~) main::$2 + (const byte) OFFSET_STRUCT_POINT_X
|
2020-03-29 19:00:25 +00:00
|
|
|
*((const nomodify byte*) main::SCREEN + (number) 0) ← *((byte*~) main::$0)
|
2020-04-19 09:05:54 +00:00
|
|
|
(byte*~) main::$3 ← (byte*)(const struct Point*) main::q
|
|
|
|
(byte*~) main::$1 ← (byte*~) main::$3 + (const byte) OFFSET_STRUCT_POINT_Y
|
2020-03-29 19:00:25 +00:00
|
|
|
*((const nomodify byte*) main::SCREEN + (number) 1) ← *((byte*~) main::$1)
|
2019-06-16 17:54:03 +00:00
|
|
|
to:main::@return
|
|
|
|
main::@return: scope:[main] from main
|
|
|
|
return
|
|
|
|
to:@return
|
2020-06-27 19:18:00 +00:00
|
|
|
|
|
|
|
(void()) _start()
|
|
|
|
_start: scope:[_start] from
|
2019-06-16 17:54:03 +00:00
|
|
|
call main
|
2020-06-27 19:18:00 +00:00
|
|
|
to:_start::@1
|
|
|
|
_start::@1: scope:[_start] from _start
|
|
|
|
to:_start::@return
|
|
|
|
_start::@return: scope:[_start] from _start::@1
|
|
|
|
return
|
|
|
|
to:@return
|
2019-06-16 17:54:03 +00:00
|
|
|
|
|
|
|
SYMBOL TABLE SSA
|
2020-01-08 23:30:16 +00:00
|
|
|
(const struct Point) $0 = { x: (byte) 2, y: (byte) 3 }
|
2019-06-16 17:54:03 +00:00
|
|
|
(const byte) OFFSET_STRUCT_POINT_X = (byte) 0
|
|
|
|
(const byte) OFFSET_STRUCT_POINT_Y = (byte) 1
|
2019-11-03 19:11:06 +00:00
|
|
|
(byte) Point::x
|
|
|
|
(byte) Point::y
|
2020-01-08 23:30:16 +00:00
|
|
|
(const byte) SIZEOF_STRUCT_POINT = (byte) 2
|
2020-06-27 19:18:00 +00:00
|
|
|
(void()) _start()
|
|
|
|
(label) _start::@1
|
|
|
|
(label) _start::@return
|
2019-06-16 17:54:03 +00:00
|
|
|
(void()) main()
|
2019-11-17 18:58:06 +00:00
|
|
|
(byte*~) main::$0
|
|
|
|
(byte*~) main::$1
|
2020-04-19 09:05:54 +00:00
|
|
|
(byte*~) main::$2
|
|
|
|
(byte*~) main::$3
|
2019-06-16 17:54:03 +00:00
|
|
|
(label) main::@return
|
2020-03-29 19:00:25 +00:00
|
|
|
(const nomodify byte*) main::SCREEN = (byte*)(number) $400
|
|
|
|
(volatile struct Point) main::p loadstore
|
|
|
|
(const struct Point*) main::q = &(volatile struct Point) main::p
|
2019-06-16 17:54:03 +00:00
|
|
|
|
2020-03-29 19:00:25 +00:00
|
|
|
Adding number conversion cast (unumber) 0 in *((const nomodify byte*) main::SCREEN + (number) 0) ← *((byte*~) main::$0)
|
|
|
|
Adding number conversion cast (unumber) 1 in *((const nomodify byte*) main::SCREEN + (number) 1) ← *((byte*~) main::$1)
|
2019-06-16 17:54:03 +00:00
|
|
|
Successful SSA optimization PassNAddNumberTypeConversions
|
2019-11-03 16:05:55 +00:00
|
|
|
Simplifying constant pointer cast (byte*) 1024
|
2019-06-16 17:54:03 +00:00
|
|
|
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
|
2020-03-29 19:00:25 +00:00
|
|
|
Removing C-classic struct-unwound assignment [1] (volatile struct Point) main::p ← struct-unwound {*(&(volatile struct Point) main::p)}
|
2020-04-19 09:05:54 +00:00
|
|
|
Constant right-side identified [2] (byte*~) main::$2 ← (byte*)(const struct Point*) main::q
|
|
|
|
Constant right-side identified [5] (byte*~) main::$3 ← (byte*)(const struct Point*) main::q
|
2019-11-17 00:51:42 +00:00
|
|
|
Successful SSA optimization Pass2ConstantRValueConsolidation
|
2020-04-19 09:05:54 +00:00
|
|
|
Constant (const byte*) main::$2 = (byte*)main::q
|
|
|
|
Constant (const byte*) main::$3 = (byte*)main::q
|
2019-06-16 17:54:03 +00:00
|
|
|
Successful SSA optimization Pass2ConstantIdentification
|
2020-04-19 09:05:54 +00:00
|
|
|
Converting *(pointer+n) to pointer[n] [4] *((const nomodify byte*) main::SCREEN + (byte) 0) ← *((byte*~) main::$0) -- *(main::$2 + OFFSET_STRUCT_POINT_X)
|
|
|
|
Converting *(pointer+n) to pointer[n] [7] *((const nomodify byte*) main::SCREEN + (byte) 1) ← *((byte*~) main::$1) -- *(main::$3 + OFFSET_STRUCT_POINT_Y)
|
|
|
|
Successful SSA optimization Pass2InlineDerefIdx
|
|
|
|
Simplifying expression containing zero main::$2 in [3] (byte*~) main::$0 ← (const byte*) main::$2 + (const byte) OFFSET_STRUCT_POINT_X
|
|
|
|
Simplifying expression containing zero main::$2 in [4] *((const nomodify byte*) main::SCREEN + (byte) 0) ← *((const byte*) main::$2 + (const byte) OFFSET_STRUCT_POINT_X)
|
|
|
|
Simplifying expression containing zero main::SCREEN in [4] *((const nomodify byte*) main::SCREEN + (byte) 0) ← *((const byte*) main::$2)
|
2019-06-16 17:54:03 +00:00
|
|
|
Successful SSA optimization PassNSimplifyExpressionWithZero
|
2020-04-19 09:05:54 +00:00
|
|
|
Eliminating unused variable (byte*~) main::$0 and assignment [1] (byte*~) main::$0 ← (const byte*) main::$2
|
|
|
|
Eliminating unused variable (byte*~) main::$1 and assignment [3] (byte*~) main::$1 ← (const byte*) main::$3 + (const byte) OFFSET_STRUCT_POINT_Y
|
2019-06-16 17:54:03 +00:00
|
|
|
Eliminating unused constant (const byte) OFFSET_STRUCT_POINT_X
|
|
|
|
Successful SSA optimization PassNEliminateUnusedVars
|
2020-06-27 19:18:00 +00:00
|
|
|
Removing unused procedure _start
|
|
|
|
Removing unused procedure block _start
|
|
|
|
Removing unused procedure block _start::@1
|
|
|
|
Removing unused procedure block _start::@return
|
|
|
|
Successful SSA optimization PassNEliminateEmptyStart
|
2020-04-19 09:05:54 +00:00
|
|
|
Constant inlined main::$2 = (byte*)(const struct Point*) main::q
|
|
|
|
Constant inlined main::$3 = (byte*)(const struct Point*) main::q
|
2019-11-17 00:51:42 +00:00
|
|
|
Successful SSA optimization Pass2ConstantInlining
|
2020-04-19 09:05:54 +00:00
|
|
|
Consolidated array index constant in *((byte*)main::q+OFFSET_STRUCT_POINT_Y)
|
2019-09-29 18:57:23 +00:00
|
|
|
Consolidated array index constant in *(main::SCREEN+1)
|
2019-06-16 17:54:03 +00:00
|
|
|
Successful SSA optimization Pass2ConstantAdditionElimination
|
|
|
|
CALL GRAPH
|
|
|
|
|
|
|
|
Created 0 initial phi equivalence classes
|
|
|
|
Coalesced down to 0 phi equivalence classes
|
|
|
|
|
|
|
|
FINAL CONTROL FLOW GRAPH
|
2019-09-18 21:00:30 +00:00
|
|
|
|
|
|
|
(void()) main()
|
2020-06-27 19:18:00 +00:00
|
|
|
main: scope:[main] from
|
|
|
|
[0] *(&(volatile struct Point) main::p) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT)
|
|
|
|
[1] *((const nomodify byte*) main::SCREEN) ← *((byte*)(const struct Point*) main::q)
|
|
|
|
[2] *((const nomodify byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::q+(const byte) OFFSET_STRUCT_POINT_Y)
|
2019-06-16 17:54:03 +00:00
|
|
|
to:main::@return
|
|
|
|
main::@return: scope:[main] from main
|
2020-06-27 19:18:00 +00:00
|
|
|
[3] return
|
2019-06-16 17:54:03 +00:00
|
|
|
to:@return
|
|
|
|
|
|
|
|
|
|
|
|
VARIABLE REGISTER WEIGHTS
|
2019-11-03 19:11:06 +00:00
|
|
|
(byte) Point::x
|
|
|
|
(byte) Point::y
|
2019-06-16 17:54:03 +00:00
|
|
|
(void()) main()
|
2020-03-29 19:00:25 +00:00
|
|
|
(volatile struct Point) main::p loadstore
|
2019-06-16 17:54:03 +00:00
|
|
|
|
|
|
|
Initial phi equivalence classes
|
2019-12-27 21:35:05 +00:00
|
|
|
Added variable main::p to live range equivalence class [ main::p ]
|
2019-06-16 17:54:03 +00:00
|
|
|
Complete equivalence classes
|
2019-12-27 21:35:05 +00:00
|
|
|
[ main::p ]
|
|
|
|
Allocated zp[2]:2 [ main::p ]
|
2019-06-16 17:54:03 +00:00
|
|
|
|
|
|
|
INITIAL ASM
|
2019-09-08 00:29:17 +00:00
|
|
|
Target platform is c64basic / MOS6502X
|
2019-07-08 14:43:09 +00:00
|
|
|
// File Comments
|
2019-06-16 17:54:03 +00:00
|
|
|
// Minimal struct - using address-of
|
2019-07-25 15:06:17 +00:00
|
|
|
// Upstart
|
2019-06-16 17:54:03 +00:00
|
|
|
.pc = $801 "Basic"
|
2020-05-11 00:36:37 +00:00
|
|
|
:BasicUpstart(main)
|
2019-06-16 17:54:03 +00:00
|
|
|
.pc = $80d "Program"
|
2019-07-08 14:43:09 +00:00
|
|
|
// Global Constants & labels
|
2020-01-08 23:30:16 +00:00
|
|
|
.const SIZEOF_STRUCT_POINT = 2
|
2019-06-16 17:54:03 +00:00
|
|
|
.const OFFSET_STRUCT_POINT_Y = 1
|
2019-07-08 14:43:09 +00:00
|
|
|
// main
|
2019-06-16 17:54:03 +00:00
|
|
|
main: {
|
|
|
|
.label SCREEN = $400
|
2019-12-27 21:35:05 +00:00
|
|
|
.label q = p
|
|
|
|
.label p = 2
|
2020-06-27 19:18:00 +00:00
|
|
|
// [0] *(&(volatile struct Point) main::p) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3
|
2020-01-08 23:30:16 +00:00
|
|
|
ldy #SIZEOF_STRUCT_POINT
|
|
|
|
!:
|
|
|
|
lda __0-1,y
|
|
|
|
sta p-1,y
|
|
|
|
dey
|
|
|
|
bne !-
|
2020-06-27 19:18:00 +00:00
|
|
|
// [1] *((const nomodify byte*) main::SCREEN) ← *((byte*)(const struct Point*) main::q) -- _deref_pbuc1=_deref_pbuc2
|
2019-09-01 20:06:32 +00:00
|
|
|
lda.z q
|
2019-06-16 17:54:03 +00:00
|
|
|
sta SCREEN
|
2020-06-27 19:18:00 +00:00
|
|
|
// [2] *((const nomodify byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::q+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2
|
2019-06-16 17:54:03 +00:00
|
|
|
lda q+OFFSET_STRUCT_POINT_Y
|
|
|
|
sta SCREEN+1
|
2019-09-29 21:13:37 +00:00
|
|
|
jmp __breturn
|
2019-07-08 14:43:09 +00:00
|
|
|
// main::@return
|
2019-09-29 21:13:37 +00:00
|
|
|
__breturn:
|
2020-06-27 19:18:00 +00:00
|
|
|
// [3] return
|
2019-06-16 17:54:03 +00:00
|
|
|
rts
|
|
|
|
}
|
2019-07-08 14:43:09 +00:00
|
|
|
// File Data
|
2020-01-08 23:30:16 +00:00
|
|
|
__0: .byte 2, 3
|
2019-06-16 17:54:03 +00:00
|
|
|
|
|
|
|
REGISTER UPLIFT POTENTIAL REGISTERS
|
2020-06-27 19:18:00 +00:00
|
|
|
Statement [0] *(&(volatile struct Point) main::p) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT) [ ] ( [ ] { } ) always clobbers reg byte a reg byte y
|
|
|
|
Statement [1] *((const nomodify byte*) main::SCREEN) ← *((byte*)(const struct Point*) main::q) [ ] ( [ ] { } ) always clobbers reg byte a
|
|
|
|
Statement [2] *((const nomodify byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::q+(const byte) OFFSET_STRUCT_POINT_Y) [ ] ( [ ] { } ) always clobbers reg byte a
|
2019-12-27 21:35:05 +00:00
|
|
|
Potential registers zp[2]:2 [ main::p ] : zp[2]:2 ,
|
2019-06-16 17:54:03 +00:00
|
|
|
|
|
|
|
REGISTER UPLIFT SCOPES
|
|
|
|
Uplift Scope [Point]
|
2019-12-27 21:35:05 +00:00
|
|
|
Uplift Scope [main] 0: zp[2]:2 [ main::p ]
|
2019-06-16 17:54:03 +00:00
|
|
|
Uplift Scope []
|
|
|
|
|
2020-06-27 19:18:00 +00:00
|
|
|
Uplifting [Point] best 40 combination
|
|
|
|
Uplifting [main] best 40 combination zp[2]:2 [ main::p ]
|
|
|
|
Uplifting [] best 40 combination
|
2019-06-16 17:54:03 +00:00
|
|
|
|
|
|
|
ASSEMBLER BEFORE OPTIMIZATION
|
2019-07-08 14:43:09 +00:00
|
|
|
// File Comments
|
2019-06-16 17:54:03 +00:00
|
|
|
// Minimal struct - using address-of
|
2019-07-25 15:06:17 +00:00
|
|
|
// Upstart
|
2019-06-16 17:54:03 +00:00
|
|
|
.pc = $801 "Basic"
|
2020-05-11 00:36:37 +00:00
|
|
|
:BasicUpstart(main)
|
2019-06-16 17:54:03 +00:00
|
|
|
.pc = $80d "Program"
|
2019-07-08 14:43:09 +00:00
|
|
|
// Global Constants & labels
|
2020-01-08 23:30:16 +00:00
|
|
|
.const SIZEOF_STRUCT_POINT = 2
|
2019-06-16 17:54:03 +00:00
|
|
|
.const OFFSET_STRUCT_POINT_Y = 1
|
2019-07-08 14:43:09 +00:00
|
|
|
// main
|
2019-06-16 17:54:03 +00:00
|
|
|
main: {
|
|
|
|
.label SCREEN = $400
|
2019-12-27 21:35:05 +00:00
|
|
|
.label q = p
|
|
|
|
.label p = 2
|
2020-06-27 19:18:00 +00:00
|
|
|
// [0] *(&(volatile struct Point) main::p) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3
|
2020-01-08 23:30:16 +00:00
|
|
|
ldy #SIZEOF_STRUCT_POINT
|
|
|
|
!:
|
|
|
|
lda __0-1,y
|
|
|
|
sta p-1,y
|
|
|
|
dey
|
|
|
|
bne !-
|
2020-06-27 19:18:00 +00:00
|
|
|
// [1] *((const nomodify byte*) main::SCREEN) ← *((byte*)(const struct Point*) main::q) -- _deref_pbuc1=_deref_pbuc2
|
2019-09-01 20:06:32 +00:00
|
|
|
lda.z q
|
2019-06-16 17:54:03 +00:00
|
|
|
sta SCREEN
|
2020-06-27 19:18:00 +00:00
|
|
|
// [2] *((const nomodify byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::q+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2
|
2019-06-16 17:54:03 +00:00
|
|
|
lda q+OFFSET_STRUCT_POINT_Y
|
|
|
|
sta SCREEN+1
|
2019-09-29 21:13:37 +00:00
|
|
|
jmp __breturn
|
2019-07-08 14:43:09 +00:00
|
|
|
// main::@return
|
2019-09-29 21:13:37 +00:00
|
|
|
__breturn:
|
2020-06-27 19:18:00 +00:00
|
|
|
// [3] return
|
2019-06-16 17:54:03 +00:00
|
|
|
rts
|
|
|
|
}
|
2019-07-08 14:43:09 +00:00
|
|
|
// File Data
|
2020-01-08 23:30:16 +00:00
|
|
|
__0: .byte 2, 3
|
2019-06-16 17:54:03 +00:00
|
|
|
|
|
|
|
ASSEMBLER OPTIMIZATIONS
|
2019-09-29 21:13:37 +00:00
|
|
|
Removing instruction jmp __breturn
|
2019-06-16 17:54:03 +00:00
|
|
|
Succesful ASM optimization Pass5NextJumpElimination
|
2019-09-29 21:13:37 +00:00
|
|
|
Removing instruction __breturn:
|
2019-06-16 17:54:03 +00:00
|
|
|
Succesful ASM optimization Pass5UnusedLabelElimination
|
|
|
|
|
|
|
|
FINAL SYMBOL TABLE
|
2020-01-08 23:30:16 +00:00
|
|
|
(const struct Point) $0 = { x: (byte) 2, y: (byte) 3 }
|
2019-10-13 22:51:15 +00:00
|
|
|
(const byte) OFFSET_STRUCT_POINT_Y = (byte) 1
|
2019-11-03 19:11:06 +00:00
|
|
|
(byte) Point::x
|
|
|
|
(byte) Point::y
|
2020-01-08 23:30:16 +00:00
|
|
|
(const byte) SIZEOF_STRUCT_POINT = (byte) 2
|
2019-06-16 17:54:03 +00:00
|
|
|
(void()) main()
|
|
|
|
(label) main::@return
|
2020-03-29 19:00:25 +00:00
|
|
|
(const nomodify byte*) main::SCREEN = (byte*) 1024
|
|
|
|
(volatile struct Point) main::p loadstore zp[2]:2
|
|
|
|
(const struct Point*) main::q = &(volatile struct Point) main::p
|
2019-06-16 17:54:03 +00:00
|
|
|
|
2019-12-27 21:35:05 +00:00
|
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zp[2]:2 [ main::p ]
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2019-06-16 17:54:03 +00:00
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FINAL ASSEMBLER
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2020-01-08 23:30:16 +00:00
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Score: 37
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2019-06-16 17:54:03 +00:00
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2019-07-08 14:43:09 +00:00
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// File Comments
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2019-06-16 17:54:03 +00:00
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// Minimal struct - using address-of
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2019-07-25 15:06:17 +00:00
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// Upstart
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2019-06-16 17:54:03 +00:00
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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2019-07-08 14:43:09 +00:00
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// Global Constants & labels
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2020-01-08 23:30:16 +00:00
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.const SIZEOF_STRUCT_POINT = 2
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2019-06-16 17:54:03 +00:00
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.const OFFSET_STRUCT_POINT_Y = 1
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2019-07-08 14:43:09 +00:00
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// main
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2019-06-16 17:54:03 +00:00
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main: {
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.label SCREEN = $400
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2019-12-27 21:35:05 +00:00
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.label q = p
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.label p = 2
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2019-07-08 14:43:09 +00:00
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// p = { 2, 3 }
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2020-06-27 19:18:00 +00:00
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// [0] *(&(volatile struct Point) main::p) ← memcpy(*(&(const struct Point) $0), struct Point, (const byte) SIZEOF_STRUCT_POINT) -- _deref_pssc1=_deref_pssc2_memcpy_vbuc3
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2020-01-08 23:30:16 +00:00
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ldy #SIZEOF_STRUCT_POINT
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!:
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lda __0-1,y
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sta p-1,y
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dey
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bne !-
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2019-07-08 14:43:09 +00:00
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// SCREEN[0] = q->x
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2020-06-27 19:18:00 +00:00
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// [1] *((const nomodify byte*) main::SCREEN) ← *((byte*)(const struct Point*) main::q) -- _deref_pbuc1=_deref_pbuc2
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2019-09-01 20:06:32 +00:00
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lda.z q
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2019-06-16 17:54:03 +00:00
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sta SCREEN
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2019-07-08 14:43:09 +00:00
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// SCREEN[1] = q->y
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2020-06-27 19:18:00 +00:00
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// [2] *((const nomodify byte*) main::SCREEN+(byte) 1) ← *((byte*)(const struct Point*) main::q+(const byte) OFFSET_STRUCT_POINT_Y) -- _deref_pbuc1=_deref_pbuc2
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2019-06-16 17:54:03 +00:00
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lda q+OFFSET_STRUCT_POINT_Y
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sta SCREEN+1
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2019-07-08 14:43:09 +00:00
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// main::@return
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// }
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2020-06-27 19:18:00 +00:00
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// [3] return
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2019-06-16 17:54:03 +00:00
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rts
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}
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2019-07-08 14:43:09 +00:00
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// File Data
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2020-01-08 23:30:16 +00:00
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__0: .byte 2, 3
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2019-06-16 17:54:03 +00:00
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