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kickc/src/test/ref/loop-break-continue.log

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Culled Empty Block (label) main::@6
Culled Empty Block (label) main::@3
Culled Empty Block (label) main::@7
Culled Empty Block (label) main::@8
Culled Empty Block (label) main::@9
Culled Empty Block (label) main::@10
CONTROL FLOW GRAPH SSA
@begin: scope:[] from
to:@1
(void()) main()
main: scope:[main] from @1
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(byte*) main::screen#0 ← ((byte*)) (number) $400
(byte[]) main::str ← (const string) main::$5
(byte) main::i#0 ← (byte) 0
to:main::@1
main::@1: scope:[main] from main main::@5
(byte*) main::screen#4 ← phi( main/(byte*) main::screen#0 main::@5/(byte*) main::screen#5 )
(byte) main::i#2 ← phi( main/(byte) main::i#0 main::@5/(byte) main::i#1 )
(bool~) main::$0 ← *((byte[]) main::str + (byte) main::i#2) == (number) 0
(bool~) main::$1 ← ! (bool~) main::$0
if((bool~) main::$1) goto main::@2
to:main::@return
main::@2: scope:[main] from main::@1
(byte*) main::screen#3 ← phi( main::@1/(byte*) main::screen#4 )
(byte) main::i#3 ← phi( main::@1/(byte) main::i#2 )
(bool~) main::$2 ← *((byte[]) main::str + (byte) main::i#3) == (byte) ' '
(bool~) main::$3 ← ! (bool~) main::$2
if((bool~) main::$3) goto main::@4
to:main::@5
main::@4: scope:[main] from main::@2
(byte*) main::screen#2 ← phi( main::@2/(byte*) main::screen#3 )
(byte) main::i#4 ← phi( main::@2/(byte) main::i#3 )
*((byte*) main::screen#2) ← *((byte[]) main::str + (byte) main::i#4)
(byte*) main::screen#1 ← ++ (byte*) main::screen#2
to:main::@5
main::@5: scope:[main] from main::@2 main::@4
(byte*) main::screen#5 ← phi( main::@2/(byte*) main::screen#3 main::@4/(byte*) main::screen#1 )
(byte) main::i#5 ← phi( main::@2/(byte) main::i#3 main::@4/(byte) main::i#4 )
(byte) main::i#1 ← (byte) main::i#5 + rangenext(0,$ff)
(bool~) main::$4 ← (byte) main::i#1 != rangelast(0,$ff)
if((bool~) main::$4) goto main::@1
to:main::@return
main::@return: scope:[main] from main::@1 main::@5
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
(void()) main()
(bool~) main::$0
(bool~) main::$1
(bool~) main::$2
(bool~) main::$3
(bool~) main::$4
(const string) main::$5 = (string) "hello brave new world"
(label) main::@1
(label) main::@2
(label) main::@4
(label) main::@5
(label) main::@return
(byte) main::i
(byte) main::i#0
(byte) main::i#1
(byte) main::i#2
(byte) main::i#3
(byte) main::i#4
(byte) main::i#5
(byte*) main::screen
(byte*) main::screen#0
(byte*) main::screen#1
(byte*) main::screen#2
(byte*) main::screen#3
(byte*) main::screen#4
(byte*) main::screen#5
(byte[]) main::str
Adding number conversion cast (unumber) 0 in (bool~) main::$0 ← *((byte[]) main::str + (byte) main::i#2) == (number) 0
Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast (byte*) main::screen#0 ← (byte*)(number) $400
Successful SSA optimization Pass2InlineCast
Simplifying constant pointer cast (byte*) 1024
Simplifying constant integer cast 0
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Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inversing boolean not [5] (bool~) main::$1 ← *((byte[]) main::str + (byte) main::i#2) != (byte) 0 from [4] (bool~) main::$0 ← *((byte[]) main::str + (byte) main::i#2) == (byte) 0
Inversing boolean not [9] (bool~) main::$3 ← *((byte[]) main::str + (byte) main::i#3) != (byte) ' ' from [8] (bool~) main::$2 ← *((byte[]) main::str + (byte) main::i#3) == (byte) ' '
Successful SSA optimization Pass2UnaryNotSimplification
Alias (byte) main::i#2 = (byte) main::i#3 (byte) main::i#4
Alias (byte*) main::screen#2 = (byte*) main::screen#3 (byte*) main::screen#4
Successful SSA optimization Pass2AliasElimination
Alias (byte) main::i#2 = (byte) main::i#5
Successful SSA optimization Pass2AliasElimination
Simple Condition (bool~) main::$1 [6] if(*((byte[]) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2
Simple Condition (bool~) main::$3 [10] if(*((byte[]) main::str + (byte) main::i#2)!=(byte) ' ') goto main::@4
Simple Condition (bool~) main::$4 [17] if((byte) main::i#1!=rangelast(0,$ff)) goto main::@1
Successful SSA optimization Pass2ConditionalJumpSimplification
Negating conditional jump and destination [10] if(*((byte[]) main::str + (byte) main::i#2)==(byte) ' ') goto main::@5
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Negating conditional jump and destination [17] if((byte) main::i#1==rangelast(0,$ff)) goto main::@return
Successful SSA optimization Pass2ConditionalJumpSequenceImprovement
Constant (const byte*) main::screen#0 = (byte*) 1024
Constant (const byte[]) main::str = main::$5
Constant (const byte) main::i#0 = 0
Successful SSA optimization Pass2ConstantIdentification
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Resolved ranged next value [15] main::i#1 ← ++ main::i#2 to ++
Resolved ranged comparison value [17] if(main::i#1==rangelast(0,$ff)) goto main::@return to (number) 0
Adding number conversion cast (unumber) 0 in if((byte) main::i#1==(number) 0) goto main::@return
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inlining constant with var siblings (const byte*) main::screen#0
Inlining constant with var siblings (const byte) main::i#0
Constant inlined main::$5 = (const byte[]) main::str
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Constant inlined main::screen#0 = (byte*) 1024
Constant inlined main::i#0 = (byte) 0
Successful SSA optimization Pass2ConstantInlining
Added new block during phi lifting main::@11(between main::@5 and main::@1)
Added new block during phi lifting main::@12(between main::@2 and main::@5)
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
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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 3 initial phi equivalence classes
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Coalesced [12] main::screen#8 ← main::screen#1
Coalesced [16] main::i#6 ← main::i#1
Coalesced [17] main::screen#6 ← main::screen#5
Coalesced (already) [18] main::screen#7 ← main::screen#2
Coalesced down to 2 phi equivalence classes
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Culled Empty Block (label) @2
Culled Empty Block (label) main::@11
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Culled Empty Block (label) main::@12
Renumbering block main::@4 to main::@3
Renumbering block main::@5 to main::@4
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::@4
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[5] (byte*) main::screen#2 ← phi( main/(byte*) 1024 main::@4/(byte*) main::screen#5 )
[5] (byte) main::i#2 ← phi( main/(byte) 0 main::@4/(byte) main::i#1 )
[6] if(*((const byte[]) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2
to:main::@return
main::@return: scope:[main] from main::@1 main::@4
[7] return
to:@return
main::@2: scope:[main] from main::@1
[8] if(*((const byte[]) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4
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to:main::@3
main::@3: scope:[main] from main::@2
[9] *((byte*) main::screen#2) ← *((const byte[]) main::str + (byte) main::i#2)
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[10] (byte*) main::screen#1 ← ++ (byte*) main::screen#2
to:main::@4
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main::@4: scope:[main] from main::@2 main::@3
[11] (byte*) main::screen#5 ← phi( main::@2/(byte*) main::screen#2 main::@3/(byte*) main::screen#1 )
[12] (byte) main::i#1 ← ++ (byte) main::i#2
[13] if((byte) main::i#1==(byte) 0) goto main::@return
to:main::@1
VARIABLE REGISTER WEIGHTS
(void()) main()
(byte) main::i
(byte) main::i#1 16.5
(byte) main::i#2 9.166666666666666
(byte*) main::screen
(byte*) main::screen#1 22.0
(byte*) main::screen#2 11.0
(byte*) main::screen#5 11.0
Initial phi equivalence classes
[ main::i#2 main::i#1 ]
[ main::screen#2 main::screen#5 main::screen#1 ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
[ main::screen#2 main::screen#5 main::screen#1 ]
Allocated zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Allocated zp ZP_WORD:3 [ main::screen#2 main::screen#5 main::screen#1 ]
INITIAL ASM
Target platform is c64basic / MOS6502X
// File Comments
// Illustrates both break & continue statements in a loop
// Prints a message ending at NUL skipping all spaces
// Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
// Global Constants & labels
// @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 screen = 3
.label i = 2
// [5] phi from main to main::@1 [phi:main->main::@1]
__b1_from_main:
// [5] phi (byte*) main::screen#2 = (byte*) 1024 [phi:main->main::@1#0] -- pbuz1=pbuc1
lda #<$400
sta.z screen
lda #>$400
sta.z screen+1
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#1] -- vbuz1=vbuc1
lda #0
sta.z i
jmp __b1
// main::@1
__b1:
// [6] if(*((const byte[]) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuz1_neq_0_then_la1
ldy.z i
lda str,y
cmp #0
bne __b2
jmp __breturn
// main::@return
__breturn:
// [7] return
rts
// main::@2
__b2:
// [8] if(*((const byte[]) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 -- pbuc1_derefidx_vbuz1_eq_vbuc2_then_la1
ldy.z i
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lda str,y
cmp #' '
beq __b4_from___b2
jmp __b3
// main::@3
__b3:
// [9] *((byte*) main::screen#2) ← *((const byte[]) main::str + (byte) main::i#2) -- _deref_pbuz1=pbuc1_derefidx_vbuz2
ldy.z i
lda str,y
ldy #0
sta (screen),y
// [10] (byte*) main::screen#1 ← ++ (byte*) main::screen#2 -- pbuz1=_inc_pbuz1
inc.z screen
bne !+
inc.z screen+1
!:
// [11] phi from main::@2 main::@3 to main::@4 [phi:main::@2/main::@3->main::@4]
__b4_from___b2:
__b4_from___b3:
// [11] phi (byte*) main::screen#5 = (byte*) main::screen#2 [phi:main::@2/main::@3->main::@4#0] -- register_copy
jmp __b4
// main::@4
__b4:
// [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1
inc.z i
// [13] if((byte) main::i#1==(byte) 0) goto main::@return -- vbuz1_eq_0_then_la1
lda.z i
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cmp #0
beq __breturn
// [5] phi from main::@4 to main::@1 [phi:main::@4->main::@1]
__b1_from___b4:
// [5] phi (byte*) main::screen#2 = (byte*) main::screen#5 [phi:main::@4->main::@1#0] -- register_copy
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@1#1] -- register_copy
jmp __b1
str: .text "hello brave new world"
.byte 0
}
// File Data
REGISTER UPLIFT POTENTIAL REGISTERS
Statement [6] if(*((const byte[]) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] ) always clobbers reg byte a
Removing always clobbered register reg byte a as potential for zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Statement [8] if(*((const byte[]) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] ) always clobbers reg byte a
Statement [9] *((byte*) main::screen#2) ← *((const byte[]) main::str + (byte) main::i#2) [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] ) always clobbers reg byte a reg byte y
Removing always clobbered register reg byte y as potential for zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Statement [6] if(*((const byte[]) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] ) always clobbers reg byte a
Statement [8] if(*((const byte[]) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] ) always clobbers reg byte a
Statement [9] *((byte*) main::screen#2) ← *((const byte[]) main::str + (byte) main::i#2) [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] ) always clobbers reg byte a reg byte y
Potential registers zp ZP_BYTE:2 [ main::i#2 main::i#1 ] : zp ZP_BYTE:2 , reg byte x ,
Potential registers zp ZP_WORD:3 [ main::screen#2 main::screen#5 main::screen#1 ] : zp ZP_WORD:3 ,
REGISTER UPLIFT SCOPES
Uplift Scope [main] 44: zp ZP_WORD:3 [ main::screen#2 main::screen#5 main::screen#1 ] 25.67: zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Uplift Scope []
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Uplifting [main] best 783 combination zp ZP_WORD:3 [ main::screen#2 main::screen#5 main::screen#1 ] reg byte x [ main::i#2 main::i#1 ]
Uplifting [] best 783 combination
Allocated (was zp ZP_WORD:3) zp ZP_WORD:2 [ main::screen#2 main::screen#5 main::screen#1 ]
ASSEMBLER BEFORE OPTIMIZATION
// File Comments
// Illustrates both break & continue statements in a loop
// Prints a message ending at NUL skipping all spaces
// Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
// Global Constants & labels
// @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 screen = 2
// [5] phi from main to main::@1 [phi:main->main::@1]
__b1_from_main:
// [5] phi (byte*) main::screen#2 = (byte*) 1024 [phi:main->main::@1#0] -- pbuz1=pbuc1
lda #<$400
sta.z screen
lda #>$400
sta.z screen+1
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#1] -- vbuxx=vbuc1
ldx #0
jmp __b1
// main::@1
__b1:
// [6] if(*((const byte[]) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_neq_0_then_la1
lda str,x
cmp #0
bne __b2
jmp __breturn
// main::@return
__breturn:
// [7] return
rts
// main::@2
__b2:
// [8] if(*((const byte[]) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 -- pbuc1_derefidx_vbuxx_eq_vbuc2_then_la1
lda str,x
cmp #' '
beq __b4_from___b2
jmp __b3
// main::@3
__b3:
// [9] *((byte*) main::screen#2) ← *((const byte[]) main::str + (byte) main::i#2) -- _deref_pbuz1=pbuc1_derefidx_vbuxx
lda str,x
ldy #0
sta (screen),y
// [10] (byte*) main::screen#1 ← ++ (byte*) main::screen#2 -- pbuz1=_inc_pbuz1
inc.z screen
bne !+
inc.z screen+1
!:
// [11] phi from main::@2 main::@3 to main::@4 [phi:main::@2/main::@3->main::@4]
__b4_from___b2:
__b4_from___b3:
// [11] phi (byte*) main::screen#5 = (byte*) main::screen#2 [phi:main::@2/main::@3->main::@4#0] -- register_copy
jmp __b4
// main::@4
__b4:
// [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
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inx
// [13] if((byte) main::i#1==(byte) 0) goto main::@return -- vbuxx_eq_0_then_la1
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cpx #0
beq __breturn
// [5] phi from main::@4 to main::@1 [phi:main::@4->main::@1]
__b1_from___b4:
// [5] phi (byte*) main::screen#2 = (byte*) main::screen#5 [phi:main::@4->main::@1#0] -- register_copy
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@1#1] -- register_copy
jmp __b1
str: .text "hello brave new world"
.byte 0
}
// File Data
ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __bend
Removing instruction jmp __b1
Removing instruction jmp __breturn
Removing instruction jmp __b3
Removing instruction jmp __b4
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __bbegin with __b1
Replacing label __b4_from___b2 with __b4
Removing instruction __bbegin:
Removing instruction __b1_from___bbegin:
Removing instruction main_from___b1:
Removing instruction __bend_from___b1:
Removing instruction __b4_from___b2:
Removing instruction __b4_from___b3:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction __bend:
Removing instruction __b1_from_main:
Removing instruction __b3:
Removing instruction __b1_from___b4:
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
(void()) main()
(label) main::@1
(label) main::@2
(label) main::@3
(label) main::@4
(label) main::@return
(byte) main::i
(byte) main::i#1 reg byte x 16.5
(byte) main::i#2 reg byte x 9.166666666666666
(byte*) main::screen
(byte*) main::screen#1 screen zp ZP_WORD:2 22.0
(byte*) main::screen#2 screen zp ZP_WORD:2 11.0
(byte*) main::screen#5 screen zp ZP_WORD:2 11.0
(const byte[]) main::str str = (string) "hello brave new world"
reg byte x [ main::i#2 main::i#1 ]
zp ZP_WORD:2 [ main::screen#2 main::screen#5 main::screen#1 ]
FINAL ASSEMBLER
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Score: 651
// File Comments
// Illustrates both break & continue statements in a loop
// Prints a message ending at NUL skipping all spaces
// Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
// Global Constants & labels
// @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 screen = 2
// [5] phi from main to main::@1 [phi:main->main::@1]
// [5] phi (byte*) main::screen#2 = (byte*) 1024 [phi:main->main::@1#0] -- pbuz1=pbuc1
lda #<$400
sta.z screen
lda #>$400
sta.z screen+1
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#1] -- vbuxx=vbuc1
ldx #0
// main::@1
__b1:
// if(str[i]==0)
// [6] if(*((const byte[]) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_neq_0_then_la1
lda str,x
cmp #0
bne __b2
// main::@return
__breturn:
// }
// [7] return
rts
// main::@2
__b2:
// if(str[i]==' ')
// [8] if(*((const byte[]) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 -- pbuc1_derefidx_vbuxx_eq_vbuc2_then_la1
lda str,x
cmp #' '
beq __b4
// main::@3
// *screen++ = str[i]
// [9] *((byte*) main::screen#2) ← *((const byte[]) main::str + (byte) main::i#2) -- _deref_pbuz1=pbuc1_derefidx_vbuxx
lda str,x
ldy #0
sta (screen),y
// *screen++ = str[i];
// [10] (byte*) main::screen#1 ← ++ (byte*) main::screen#2 -- pbuz1=_inc_pbuz1
inc.z screen
bne !+
inc.z screen+1
!:
// [11] phi from main::@2 main::@3 to main::@4 [phi:main::@2/main::@3->main::@4]
// [11] phi (byte*) main::screen#5 = (byte*) main::screen#2 [phi:main::@2/main::@3->main::@4#0] -- register_copy
// main::@4
__b4:
// for( byte i: 0..255)
// [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
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inx
// [13] if((byte) main::i#1==(byte) 0) goto main::@return -- vbuxx_eq_0_then_la1
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cpx #0
beq __breturn
// [5] phi from main::@4 to main::@1 [phi:main::@4->main::@1]
// [5] phi (byte*) main::screen#2 = (byte*) main::screen#5 [phi:main::@4->main::@1#0] -- register_copy
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@1#1] -- register_copy
jmp __b1
str: .text "hello brave new world"
.byte 0
}
// File Data