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kickc/src/test/ref/index-pointer-rewrite-8.log

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CONTROL FLOW GRAPH SSA
void main()
main: scope:[main] from __start
main::i#0 = 0
to:main::@1
main::@1: scope:[main] from main main::@2
main::i#2 = phi( main/main::i#0, main::@2/main::i#1 )
main::$0 = main::i#2 < $19
if(main::$0) goto main::@2
to:main::@return
main::@2: scope:[main] from main::@1
main::i#3 = phi( main::@1/main::i#2 )
main::$1 = main::i#3 * SIZEOF_STRUCT_BALL
((char *)balls+OFFSET_STRUCT_BALL_POS)[main::$1] = ((char *)balls+OFFSET_STRUCT_BALL_POS)[main::$1] + ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$1]
main::$2 = main::i#3 * SIZEOF_STRUCT_BALL
((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] = ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] + $a
main::$3 = main::i#3 * SIZEOF_STRUCT_BALL
((char *)balls+OFFSET_STRUCT_BALL_SYM)[main::$3] = '*'
main::i#1 = ++ main::i#3
to:main::@1
main::@return: scope:[main] from main::@1
return
to:@return
void __start()
__start: scope:[__start] from
call main
to:__start::@1
__start::@1: scope:[__start] from __start
to:__start::@return
__start::@return: scope:[__start] from __start::@1
return
to:@return
SYMBOL TABLE SSA
__constant char OFFSET_STRUCT_BALL_POS = 0
__constant char OFFSET_STRUCT_BALL_SYM = 2
__constant char OFFSET_STRUCT_BALL_VEL = 1
__constant char SIZEOF_STRUCT_BALL = 3
void __start()
__constant struct Ball balls[$19] = { fill( $19, 0) }
void main()
bool main::$0
char main::$1
char main::$2
char main::$3
char main::i
char main::i#0
char main::i#1
char main::i#2
char main::i#3
Adding number conversion cast (unumber) $19 in main::$0 = main::i#2 < $19
Adding number conversion cast (unumber) $a in ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] = ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] + $a
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast $19
Simplifying constant integer cast $a
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (char) $19
Finalized unsigned number type (char) $a
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias main::i#2 = main::i#3
Successful SSA optimization Pass2AliasElimination
Identified duplicate assignment right side [7] main::$2 = main::i#2 * SIZEOF_STRUCT_BALL
Identified duplicate assignment right side [9] main::$3 = main::i#2 * SIZEOF_STRUCT_BALL
Successful SSA optimization Pass2DuplicateRValueIdentification
Simple Condition main::$0 [3] if(main::i#2<$19) goto main::@2
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant main::i#0 = 0
Successful SSA optimization Pass2ConstantIdentification
Simplifying expression containing zero (char *)balls in [5] ((char *)balls+OFFSET_STRUCT_BALL_POS)[main::$1] = ((char *)balls+OFFSET_STRUCT_BALL_POS)[main::$1] + ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$1]
Simplifying expression containing zero (char *)balls in [5] ((char *)balls+OFFSET_STRUCT_BALL_POS)[main::$1] = ((char *)balls)[main::$1] + ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$1]
Successful SSA optimization PassNSimplifyExpressionWithZero
Eliminating unused constant OFFSET_STRUCT_BALL_POS
Successful SSA optimization PassNEliminateUnusedVars
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
Alias main::$2 = main::$1 main::$3
Successful SSA optimization Pass2AliasElimination
Rewriting multiplication to use shift and addition[2] main::$2 = main::i#2 * SIZEOF_STRUCT_BALL
Inlining constant with var siblings main::i#0
Constant inlined main::i#0 = 0
Successful SSA optimization Pass2ConstantInlining
Alias main::$2 = main::$5
Successful SSA optimization Pass2AliasElimination
Eliminating unused constant SIZEOF_STRUCT_BALL
Successful SSA optimization PassNEliminateUnusedVars
Finalized unsigned number type (char) $19
Finalized unsigned number type (char) $19
Successful SSA optimization PassNFinalizeNumberTypeConversions
Adding NOP phi() at start of main
CALL GRAPH
Created 1 initial phi equivalence classes
Coalesced [10] main::i#4 = main::i#1
Coalesced down to 1 phi equivalence classes
Adding NOP phi() at start of main
FINAL CONTROL FLOW GRAPH
void main()
main: scope:[main] from
[0] phi()
to:main::@1
main::@1: scope:[main] from main main::@2
[1] main::i#2 = phi( main/0, main::@2/main::i#1 )
[2] if(main::i#2<$19) goto main::@2
to:main::@return
main::@return: scope:[main] from main::@1
[3] return
to:@return
main::@2: scope:[main] from main::@1
[4] main::$4 = main::i#2 << 1
[5] main::$2 = main::$4 + main::i#2
[6] ((char *)balls)[main::$2] = ((char *)balls)[main::$2] + ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2]
[7] ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] = ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] + $a
[8] ((char *)balls+OFFSET_STRUCT_BALL_SYM)[main::$2] = '*'
[9] main::i#1 = ++ main::i#2
to:main::@1
VARIABLE REGISTER WEIGHTS
void main()
char main::$2 // 25.666666666666668
char main::$4 // 22.0
char main::i
char main::i#1 // 22.0
char main::i#2 // 7.857142857142857
Initial phi equivalence classes
[ main::i#2 main::i#1 ]
Added variable main::$4 to live range equivalence class [ main::$4 ]
Added variable main::$2 to live range equivalence class [ main::$2 ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
[ main::$4 ]
[ main::$2 ]
Allocated zp[1]:2 [ main::i#2 main::i#1 ]
Allocated zp[1]:3 [ main::$4 ]
Allocated zp[1]:4 [ main::$2 ]
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [4] main::$4 = main::i#2 << 1 [ main::i#2 main::$4 ] ( [ main::i#2 main::$4 ] { } ) always clobbers reg byte a
Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::i#2 main::i#1 ]
Statement [5] main::$2 = main::$4 + main::i#2 [ main::i#2 main::$2 ] ( [ main::i#2 main::$2 ] { } ) always clobbers reg byte a
Statement [6] ((char *)balls)[main::$2] = ((char *)balls)[main::$2] + ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] [ main::i#2 main::$2 ] ( [ main::i#2 main::$2 ] { } ) always clobbers reg byte a
Removing always clobbered register reg byte a as potential for zp[1]:4 [ main::$2 ]
Statement [7] ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] = ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] + $a [ main::i#2 main::$2 ] ( [ main::i#2 main::$2 ] { } ) always clobbers reg byte a
Statement [8] ((char *)balls+OFFSET_STRUCT_BALL_SYM)[main::$2] = '*' [ main::i#2 ] ( [ main::i#2 ] { } ) always clobbers reg byte a
Statement [4] main::$4 = main::i#2 << 1 [ main::i#2 main::$4 ] ( [ main::i#2 main::$4 ] { } ) always clobbers reg byte a
Statement [5] main::$2 = main::$4 + main::i#2 [ main::i#2 main::$2 ] ( [ main::i#2 main::$2 ] { } ) always clobbers reg byte a
Statement [6] ((char *)balls)[main::$2] = ((char *)balls)[main::$2] + ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] [ main::i#2 main::$2 ] ( [ main::i#2 main::$2 ] { } ) always clobbers reg byte a
Statement [7] ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] = ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] + $a [ main::i#2 main::$2 ] ( [ main::i#2 main::$2 ] { } ) always clobbers reg byte a
Statement [8] ((char *)balls+OFFSET_STRUCT_BALL_SYM)[main::$2] = '*' [ main::i#2 ] ( [ main::i#2 ] { } ) always clobbers reg byte a
Potential registers zp[1]:2 [ main::i#2 main::i#1 ] : zp[1]:2 , reg byte x , reg byte y ,
Potential registers zp[1]:3 [ main::$4 ] : zp[1]:3 , reg byte a , reg byte x , reg byte y ,
Potential registers zp[1]:4 [ main::$2 ] : zp[1]:4 , reg byte x , reg byte y ,
REGISTER UPLIFT SCOPES
Uplift Scope [main] 29.86: zp[1]:2 [ main::i#2 main::i#1 ] 25.67: zp[1]:4 [ main::$2 ] 22: zp[1]:3 [ main::$4 ]
Uplift Scope [Ball]
Uplift Scope []
Uplifting [main] best 686 combination reg byte y [ main::i#2 main::i#1 ] reg byte x [ main::$2 ] reg byte a [ main::$4 ]
Uplifting [Ball] best 686 combination
Uplifting [] best 686 combination
ASSEMBLER BEFORE OPTIMIZATION
// File Comments
// Test array index pointer rewriting
// struct array with 8bit index
// Upstart
// Commodore 64 PRG executable file
.file [name="index-pointer-rewrite-8.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
// Global Constants & labels
.const OFFSET_STRUCT_BALL_VEL = 1
.const OFFSET_STRUCT_BALL_SYM = 2
.segment Code
// main
main: {
// [1] phi from main to main::@1 [phi:main->main::@1]
__b1_from_main:
// [1] phi main::i#2 = 0 [phi:main->main::@1#0] -- vbuyy=vbuc1
ldy #0
jmp __b1
// main::@1
__b1:
// [2] if(main::i#2<$19) goto main::@2 -- vbuyy_lt_vbuc1_then_la1
cpy #$19
bcc __b2
jmp __breturn
// main::@return
__breturn:
// [3] return
rts
// main::@2
__b2:
// [4] main::$4 = main::i#2 << 1 -- vbuaa=vbuyy_rol_1
tya
asl
// [5] main::$2 = main::$4 + main::i#2 -- vbuxx=vbuaa_plus_vbuyy
sty.z $ff
clc
adc.z $ff
tax
// [6] ((char *)balls)[main::$2] = ((char *)balls)[main::$2] + ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] -- pbuc1_derefidx_vbuxx=pbuc1_derefidx_vbuxx_plus_pbuc2_derefidx_vbuxx
lda balls,x
clc
adc balls+OFFSET_STRUCT_BALL_VEL,x
sta balls,x
// [7] ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] = ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] + $a -- pbuc1_derefidx_vbuxx=pbuc1_derefidx_vbuxx_plus_vbuc2
lda #$a
clc
adc balls+OFFSET_STRUCT_BALL_VEL,x
sta balls+OFFSET_STRUCT_BALL_VEL,x
// [8] ((char *)balls+OFFSET_STRUCT_BALL_SYM)[main::$2] = '*' -- pbuc1_derefidx_vbuxx=vbuc2
lda #'*'
sta balls+OFFSET_STRUCT_BALL_SYM,x
// [9] main::i#1 = ++ main::i#2 -- vbuyy=_inc_vbuyy
iny
// [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
__b1_from___b2:
// [1] phi main::i#2 = main::i#1 [phi:main::@2->main::@1#0] -- register_copy
jmp __b1
}
// File Data
.segment Data
balls: .fill 3*$19, 0
ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __breturn
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction __b1_from_main:
Removing instruction __breturn:
Removing instruction __b1_from___b2:
Succesful ASM optimization Pass5UnusedLabelElimination
FINAL SYMBOL TABLE
__constant char OFFSET_STRUCT_BALL_SYM = 2
__constant char OFFSET_STRUCT_BALL_VEL = 1
__constant struct Ball balls[$19] = { fill( $19, 0) }
void main()
char main::$2 // reg byte x 25.666666666666668
char main::$4 // reg byte a 22.0
char main::i
char main::i#1 // reg byte y 22.0
char main::i#2 // reg byte y 7.857142857142857
reg byte y [ main::i#2 main::i#1 ]
reg byte a [ main::$4 ]
reg byte x [ main::$2 ]
FINAL ASSEMBLER
Score: 626
// File Comments
// Test array index pointer rewriting
// struct array with 8bit index
// Upstart
// Commodore 64 PRG executable file
.file [name="index-pointer-rewrite-8.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
// Global Constants & labels
.const OFFSET_STRUCT_BALL_VEL = 1
.const OFFSET_STRUCT_BALL_SYM = 2
.segment Code
// main
main: {
// [1] phi from main to main::@1 [phi:main->main::@1]
// [1] phi main::i#2 = 0 [phi:main->main::@1#0] -- vbuyy=vbuc1
ldy #0
// main::@1
__b1:
// for(char i=0;i<NUM_BALLS;i++)
// [2] if(main::i#2<$19) goto main::@2 -- vbuyy_lt_vbuc1_then_la1
cpy #$19
bcc __b2
// main::@return
// }
// [3] return
rts
// main::@2
__b2:
// balls[i].pos += balls[i].vel
// [4] main::$4 = main::i#2 << 1 -- vbuaa=vbuyy_rol_1
tya
asl
// [5] main::$2 = main::$4 + main::i#2 -- vbuxx=vbuaa_plus_vbuyy
sty.z $ff
clc
adc.z $ff
tax
// [6] ((char *)balls)[main::$2] = ((char *)balls)[main::$2] + ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] -- pbuc1_derefidx_vbuxx=pbuc1_derefidx_vbuxx_plus_pbuc2_derefidx_vbuxx
lda balls,x
clc
adc balls+OFFSET_STRUCT_BALL_VEL,x
sta balls,x
// balls[i].vel += 10
// [7] ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] = ((char *)balls+OFFSET_STRUCT_BALL_VEL)[main::$2] + $a -- pbuc1_derefidx_vbuxx=pbuc1_derefidx_vbuxx_plus_vbuc2
lda #$a
clc
adc balls+OFFSET_STRUCT_BALL_VEL,x
sta balls+OFFSET_STRUCT_BALL_VEL,x
// balls[i].sym ='*'
// [8] ((char *)balls+OFFSET_STRUCT_BALL_SYM)[main::$2] = '*' -- pbuc1_derefidx_vbuxx=vbuc2
lda #'*'
sta balls+OFFSET_STRUCT_BALL_SYM,x
// for(char i=0;i<NUM_BALLS;i++)
// [9] main::i#1 = ++ main::i#2 -- vbuyy=_inc_vbuyy
iny
// [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
// [1] phi main::i#2 = main::i#1 [phi:main::@2->main::@1#0] -- register_copy
jmp __b1
}
// File Data
.segment Data
balls: .fill 3*$19, 0
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