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kickc/src/test/ref/pointer-plus-signed-word.log

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CONTROL FLOW GRAPH SSA
@begin: scope:[] from
to:@1
(void()) main()
main: scope:[main] from @1
(signed word) main::i#0 ← (signed word) -$a
to:main::@1
main::@1: scope:[main] from main main::@1
(signed word) main::i#2 ← phi( main/(signed word) main::i#0 main::@1/(signed word) main::i#1 )
(byte*~) main::$0 ← (const byte*) SCREEN + (signed word) main::i#2
(byte*) main::sc#0 ← (byte*~) main::$0
*((byte*) main::sc#0) ← (byte)(signed word) main::i#2
(signed word) main::i#1 ← (signed word) main::i#2 + rangenext(-$a,$a)
(bool~) main::$1 ← (signed word) main::i#1 != rangelast(-$a,$a)
if((bool~) main::$1) goto main::@1
to:main::@return
main::@return: scope:[main] from main::@1
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*) SCREEN = (byte*)(number) $400+(number) $28*(number) $a
(void()) main()
(byte*~) main::$0
(bool~) main::$1
(label) main::@1
(label) main::@return
(signed word) main::i
(signed word) main::i#0
(signed word) main::i#1
(signed word) main::i#2
(byte*) main::sc
(byte*) main::sc#0
Alias main::sc#0 = main::$0
Successful SSA optimization Pass2AliasElimination
Simple Condition (bool~) main::$1 [6] if((signed word) main::i#1!=rangelast(-$a,$a)) goto main::@1
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant (const signed word) main::i#0 = -$a
Successful SSA optimization Pass2ConstantIdentification
Resolved ranged next value [4] main::i#1 ← ++ main::i#2 to ++
Resolved ranged comparison value [6] if(main::i#1!=rangelast(-$a,$a)) goto main::@1 to (number) $b
Adding number conversion cast (snumber) $b in if((signed word) main::i#1!=(number) $b) goto main::@1
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast $b
Successful SSA optimization PassNCastSimplification
Finalized signed number type (signed byte) $b
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inlining constant with var siblings (const signed word) main::i#0
Constant inlined main::i#0 = (signed word) -$a
Successful SSA optimization Pass2ConstantInlining
Added new block during phi lifting main::@2(between main::@1 and main::@1)
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
Adding NOP phi() at start of main
CALL GRAPH
Calls in [] to main:2
Created 1 initial phi equivalence classes
Coalesced [12] main::i#3 ← main::i#1
Coalesced down to 1 phi equivalence classes
Culled Empty Block (label) @2
Culled Empty Block (label) main::@2
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @end
Adding NOP phi() at start of main
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] phi()
to:main::@1
main::@1: scope:[main] from main main::@1
[5] (signed word) main::i#2 ← phi( main/(signed word) -$a main::@1/(signed word) main::i#1 )
[6] (byte*) main::sc#0 ← (const byte*) SCREEN + (signed word) main::i#2
[7] *((byte*) main::sc#0) ← (byte)(signed word) main::i#2
[8] (signed word) main::i#1 ← ++ (signed word) main::i#2
[9] if((signed word) main::i#1!=(signed byte) $b) goto main::@1
to:main::@return
main::@return: scope:[main] from main::@1
[10] return
to:@return
VARIABLE REGISTER WEIGHTS
(void()) main()
(signed word) main::i
(signed word) main::i#1 151.5
(signed word) main::i#2 101.0
(byte*) main::sc
(byte*) main::sc#0 202.0
Initial phi equivalence classes
[ main::i#2 main::i#1 ]
Added variable main::sc#0 to live range equivalence class [ main::sc#0 ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
[ main::sc#0 ]
Allocated zp[2]:2 [ main::i#2 main::i#1 ]
Allocated zp[2]:4 [ main::sc#0 ]
INITIAL ASM
Target platform is c64basic / MOS6502X
// File Comments
// Test adding a signed word to a pointer
// Fragment pbuz1=pbuc1_plus_vwsz1.asm supplied by Richard-William Loerakker
// Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
// Global Constants & labels
.label SCREEN = $400+$28*$a
// @begin
__bbegin:
// [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
jmp __b1
// @1
__b1:
// [2] call main
// [4] phi from @1 to main [phi:@1->main]
main_from___b1:
jsr main
// [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
jmp __bend
// @end
__bend:
// main
main: {
.label sc = 4
.label i = 2
// [5] phi from main to main::@1 [phi:main->main::@1]
__b1_from_main:
// [5] phi (signed word) main::i#2 = (signed word) -$a [phi:main->main::@1#0] -- vwsz1=vwsc1
lda #<-$a
sta.z i
lda #>-$a
sta.z i+1
jmp __b1
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
__b1_from___b1:
// [5] phi (signed word) main::i#2 = (signed word) main::i#1 [phi:main::@1->main::@1#0] -- register_copy
jmp __b1
// main::@1
__b1:
// [6] (byte*) main::sc#0 ← (const byte*) SCREEN + (signed word) main::i#2 -- pbuz1=pbuc1_plus_vwsz2
lda #<SCREEN
clc
adc.z i
sta.z sc
lda #>SCREEN
adc.z i+1
sta.z sc+1
// [7] *((byte*) main::sc#0) ← (byte)(signed word) main::i#2 -- _deref_pbuz1=_byte_vwsz2
lda.z i
ldy #0
sta (sc),y
// [8] (signed word) main::i#1 ← ++ (signed word) main::i#2 -- vwsz1=_inc_vwsz1
inc.z i
bne !+
inc.z i+1
!:
// [9] if((signed word) main::i#1!=(signed byte) $b) goto main::@1 -- vwsz1_neq_vwuc1_then_la1
lda.z i+1
cmp #>$b
bne __b1_from___b1
lda.z i
cmp #<$b
bne __b1_from___b1
jmp __breturn
// main::@return
__breturn:
// [10] return
rts
}
// File Data
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [6] (byte*) main::sc#0 ← (const byte*) SCREEN + (signed word) main::i#2 [ main::i#2 main::sc#0 ] ( main:2 [ main::i#2 main::sc#0 ] { } ) always clobbers reg byte a
Statement [7] *((byte*) main::sc#0) ← (byte)(signed word) main::i#2 [ main::i#2 ] ( main:2 [ main::i#2 ] { } ) always clobbers reg byte a reg byte y
Statement [9] if((signed word) main::i#1!=(signed byte) $b) goto main::@1 [ main::i#1 ] ( main:2 [ main::i#1 ] { } ) always clobbers reg byte a
Potential registers zp[2]:2 [ main::i#2 main::i#1 ] : zp[2]:2 ,
Potential registers zp[2]:4 [ main::sc#0 ] : zp[2]:4 ,
REGISTER UPLIFT SCOPES
Uplift Scope [main] 252.5: zp[2]:2 [ main::i#2 main::i#1 ] 202: zp[2]:4 [ main::sc#0 ]
Uplift Scope []
Uplifting [main] best 773 combination zp[2]:2 [ main::i#2 main::i#1 ] zp[2]:4 [ main::sc#0 ]
Uplifting [] best 773 combination
ASSEMBLER BEFORE OPTIMIZATION
// File Comments
// Test adding a signed word to a pointer
// Fragment pbuz1=pbuc1_plus_vwsz1.asm supplied by Richard-William Loerakker
// Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
// Global Constants & labels
.label SCREEN = $400+$28*$a
// @begin
__bbegin:
// [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
jmp __b1
// @1
__b1:
// [2] call main
// [4] phi from @1 to main [phi:@1->main]
main_from___b1:
jsr main
// [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
jmp __bend
// @end
__bend:
// main
main: {
.label sc = 4
.label i = 2
// [5] phi from main to main::@1 [phi:main->main::@1]
__b1_from_main:
// [5] phi (signed word) main::i#2 = (signed word) -$a [phi:main->main::@1#0] -- vwsz1=vwsc1
lda #<-$a
sta.z i
lda #>-$a
sta.z i+1
jmp __b1
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
__b1_from___b1:
// [5] phi (signed word) main::i#2 = (signed word) main::i#1 [phi:main::@1->main::@1#0] -- register_copy
jmp __b1
// main::@1
__b1:
// [6] (byte*) main::sc#0 ← (const byte*) SCREEN + (signed word) main::i#2 -- pbuz1=pbuc1_plus_vwsz2
lda #<SCREEN
clc
adc.z i
sta.z sc
lda #>SCREEN
adc.z i+1
sta.z sc+1
// [7] *((byte*) main::sc#0) ← (byte)(signed word) main::i#2 -- _deref_pbuz1=_byte_vwsz2
lda.z i
ldy #0
sta (sc),y
// [8] (signed word) main::i#1 ← ++ (signed word) main::i#2 -- vwsz1=_inc_vwsz1
inc.z i
bne !+
inc.z i+1
!:
// [9] if((signed word) main::i#1!=(signed byte) $b) goto main::@1 -- vwsz1_neq_vwuc1_then_la1
lda.z i+1
cmp #>$b
bne __b1_from___b1
lda.z i
cmp #<$b
bne __b1_from___b1
jmp __breturn
// main::@return
__breturn:
// [10] return
rts
}
// File Data
ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __bend
Removing instruction jmp __b1
Removing instruction jmp __breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __b1_from___b1 with __b1
Replacing label __b1_from___b1 with __b1
Removing instruction __b1_from___bbegin:
Removing instruction __b1:
Removing instruction main_from___b1:
Removing instruction __bend_from___b1:
Removing instruction __b1_from___b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction __bbegin:
Removing instruction __bend:
Removing instruction __b1_from_main:
Removing instruction __breturn:
Succesful ASM optimization Pass5UnusedLabelElimination
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction jmp __b1
Succesful ASM optimization Pass5NextJumpElimination
FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(const byte*) SCREEN = (byte*)(number) $400+(number) $28*(number) $a
(void()) main()
(label) main::@1
(label) main::@return
(signed word) main::i
(signed word) main::i#1 i zp[2]:2 151.5
(signed word) main::i#2 i zp[2]:2 101.0
(byte*) main::sc
(byte*) main::sc#0 sc zp[2]:4 202.0
zp[2]:2 [ main::i#2 main::i#1 ]
zp[2]:4 [ main::sc#0 ]
FINAL ASSEMBLER
Score: 671
// File Comments
// Test adding a signed word to a pointer
// Fragment pbuz1=pbuc1_plus_vwsz1.asm supplied by Richard-William Loerakker
// Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
// Global Constants & labels
.label SCREEN = $400+$28*$a
// @begin
// [1] phi from @begin to @1 [phi:@begin->@1]
// @1
// [2] call main
// [4] phi from @1 to main [phi:@1->main]
// [3] phi from @1 to @end [phi:@1->@end]
// @end
// main
main: {
.label sc = 4
.label i = 2
// [5] phi from main to main::@1 [phi:main->main::@1]
// [5] phi (signed word) main::i#2 = (signed word) -$a [phi:main->main::@1#0] -- vwsz1=vwsc1
lda #<-$a
sta.z i
lda #>-$a
sta.z i+1
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
// [5] phi (signed word) main::i#2 = (signed word) main::i#1 [phi:main::@1->main::@1#0] -- register_copy
// main::@1
__b1:
// sc = SCREEN + i
// [6] (byte*) main::sc#0 ← (const byte*) SCREEN + (signed word) main::i#2 -- pbuz1=pbuc1_plus_vwsz2
lda #<SCREEN
clc
adc.z i
sta.z sc
lda #>SCREEN
adc.z i+1
sta.z sc+1
// *sc = (char)i
// [7] *((byte*) main::sc#0) ← (byte)(signed word) main::i#2 -- _deref_pbuz1=_byte_vwsz2
lda.z i
ldy #0
sta (sc),y
// for (signed word i : -10..10 )
// [8] (signed word) main::i#1 ← ++ (signed word) main::i#2 -- vwsz1=_inc_vwsz1
inc.z i
bne !+
inc.z i+1
!:
// [9] if((signed word) main::i#1!=(signed byte) $b) goto main::@1 -- vwsz1_neq_vwuc1_then_la1
lda.z i+1
cmp #>$b
bne __b1
lda.z i
cmp #<$b
bne __b1
// main::@return
// }
// [10] return
rts
}
// File Data
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