kickc/src/test/ref/inline-asm-clobber.log

Adding pointer type conversion cast (byte*) SCREEN in (byte*) SCREEN ← (number) $400
Identified constant variable (byte*) SCREEN
Culled Empty Block (label) main::@8

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  (byte*) SCREEN#0 ← ((byte*)) (number) $400
  to:@1
main: scope:[main]  from @1
  (byte) main::i#0 ← (number) 0
  to:main::@1
main::@1: scope:[main]  from main main::@3
  (byte) main::i#4 ← phi( main/(byte) main::i#0 main::@3/(byte) main::i#1 )
  (byte) main::j#0 ← (number) 0
  to:main::@2
main::@2: scope:[main]  from main::@1 main::@2
  (byte) main::i#2 ← phi( main::@1/(byte) main::i#4 main::@2/(byte) main::i#2 )
  (byte) main::j#2 ← phi( main::@1/(byte) main::j#0 main::@2/(byte) main::j#1 )
  *((byte*) SCREEN#0 + (byte) main::i#2) ← (byte) main::j#2
  (byte) main::j#1 ← (byte) main::j#2 + rangenext(0,$64)
  (bool~) main::$0 ← (byte) main::j#1 != rangelast(0,$64)
  if((bool~) main::$0) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@2
  (byte) main::i#3 ← phi( main::@2/(byte) main::i#2 )
  (byte) main::i#1 ← (byte) main::i#3 + rangenext(0,$64)
  (bool~) main::$1 ← (byte) main::i#1 != rangelast(0,$64)
  if((bool~) main::$1) goto main::@1
  to:main::@4
main::@4: scope:[main]  from main::@3
  (byte) main::k#0 ← (number) 0
  to:main::@5
main::@5: scope:[main]  from main::@4 main::@7
  (byte) main::k#4 ← phi( main::@4/(byte) main::k#0 main::@7/(byte) main::k#1 )
  (byte) main::l#0 ← (number) 0
  to:main::@6
main::@6: scope:[main]  from main::@5 main::@6
  (byte) main::k#2 ← phi( main::@5/(byte) main::k#4 main::@6/(byte) main::k#2 )
  (byte) main::l#2 ← phi( main::@5/(byte) main::l#0 main::@6/(byte) main::l#1 )
  asm { eor#$55 tax  }
  *((byte*) SCREEN#0 + (byte) main::k#2) ← (byte) main::l#2
  (byte) main::l#1 ← (byte) main::l#2 + rangenext(0,$64)
  (bool~) main::$2 ← (byte) main::l#1 != rangelast(0,$64)
  if((bool~) main::$2) goto main::@6
  to:main::@7
main::@7: scope:[main]  from main::@6
  (byte) main::k#3 ← phi( main::@6/(byte) main::k#2 )
  (byte) main::k#1 ← (byte) main::k#3 + rangenext(0,$64)
  (bool~) main::$3 ← (byte) main::k#1 != rangelast(0,$64)
  if((bool~) main::$3) goto main::@5
  to:main::@return
main::@return: scope:[main]  from main::@7
  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
(byte*) SCREEN
(byte*) SCREEN#0
(void()) main()
(bool~) main::$0
(bool~) main::$1
(bool~) main::$2
(bool~) main::$3
(label) main::@1
(label) main::@2
(label) main::@3
(label) main::@4
(label) main::@5
(label) main::@6
(label) main::@7
(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::j
(byte) main::j#0
(byte) main::j#1
(byte) main::j#2
(byte) main::k
(byte) main::k#0
(byte) main::k#1
(byte) main::k#2
(byte) main::k#3
(byte) main::k#4
(byte) main::l
(byte) main::l#0
(byte) main::l#1
(byte) main::l#2

Adding number conversion cast (unumber) 0 in (byte) main::i#0 ← (number) 0
Adding number conversion cast (unumber) 0 in (byte) main::j#0 ← (number) 0
Adding number conversion cast (unumber) 0 in (byte) main::k#0 ← (number) 0
Adding number conversion cast (unumber) 0 in (byte) main::l#0 ← (number) 0
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast (byte*) SCREEN#0 ← (byte*)(number) $400
Inlining cast (byte) main::i#0 ← (unumber)(number) 0
Inlining cast (byte) main::j#0 ← (unumber)(number) 0
Inlining cast (byte) main::k#0 ← (unumber)(number) 0
Inlining cast (byte) main::l#0 ← (unumber)(number) 0
Successful SSA optimization Pass2InlineCast
Simplifying constant pointer cast (byte*) 1024
Simplifying constant integer cast 0
Simplifying constant integer cast 0
Simplifying constant integer cast 0
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias (byte) main::i#2 = (byte) main::i#3 
Alias (byte) main::k#2 = (byte) main::k#3 
Successful SSA optimization Pass2AliasElimination
Self Phi Eliminated (byte) main::i#2
Self Phi Eliminated (byte) main::k#2
Successful SSA optimization Pass2SelfPhiElimination
Identical Phi Values (byte) main::i#2 (byte) main::i#4
Identical Phi Values (byte) main::k#2 (byte) main::k#4
Successful SSA optimization Pass2IdenticalPhiElimination
Simple Condition (bool~) main::$0 [8] if((byte) main::j#1!=rangelast(0,$64)) goto main::@2
Simple Condition (bool~) main::$1 [12] if((byte) main::i#1!=rangelast(0,$64)) goto main::@1
Simple Condition (bool~) main::$2 [21] if((byte) main::l#1!=rangelast(0,$64)) goto main::@6
Simple Condition (bool~) main::$3 [25] if((byte) main::k#1!=rangelast(0,$64)) goto main::@5
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant (const byte*) SCREEN#0 = (byte*) 1024
Constant (const byte) main::i#0 = 0
Constant (const byte) main::j#0 = 0
Constant (const byte) main::k#0 = 0
Constant (const byte) main::l#0 = 0
Successful SSA optimization Pass2ConstantIdentification
Resolved ranged next value [6] main::j#1 ← ++ main::j#2 to ++
Resolved ranged comparison value [8] if(main::j#1!=rangelast(0,$64)) goto main::@2 to (number) $65
Resolved ranged next value [10] main::i#1 ← ++ main::i#4 to ++
Resolved ranged comparison value [12] if(main::i#1!=rangelast(0,$64)) goto main::@1 to (number) $65
Resolved ranged next value [19] main::l#1 ← ++ main::l#2 to ++
Resolved ranged comparison value [21] if(main::l#1!=rangelast(0,$64)) goto main::@6 to (number) $65
Resolved ranged next value [23] main::k#1 ← ++ main::k#4 to ++
Resolved ranged comparison value [25] if(main::k#1!=rangelast(0,$64)) goto main::@5 to (number) $65
Adding number conversion cast (unumber) $65 in if((byte) main::j#1!=(number) $65) goto main::@2
Adding number conversion cast (unumber) $65 in if((byte) main::i#1!=(number) $65) goto main::@1
Adding number conversion cast (unumber) $65 in if((byte) main::l#1!=(number) $65) goto main::@6
Adding number conversion cast (unumber) $65 in if((byte) main::k#1!=(number) $65) goto main::@5
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast $65
Simplifying constant integer cast $65
Simplifying constant integer cast $65
Simplifying constant integer cast $65
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) $65
Finalized unsigned number type (byte) $65
Finalized unsigned number type (byte) $65
Finalized unsigned number type (byte) $65
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inlining constant with var siblings (const byte) main::i#0
Inlining constant with var siblings (const byte) main::j#0
Inlining constant with var siblings (const byte) main::k#0
Inlining constant with var siblings (const byte) main::l#0
Constant inlined main::i#0 = (byte) 0
Constant inlined main::k#0 = (byte) 0
Constant inlined main::j#0 = (byte) 0
Constant inlined main::l#0 = (byte) 0
Successful SSA optimization Pass2ConstantInlining
Added new block during phi lifting main::@9(between main::@3 and main::@1)
Added new block during phi lifting main::@10(between main::@2 and main::@2)
Added new block during phi lifting main::@11(between main::@7 and main::@5)
Added new block during phi lifting main::@12(between main::@6 and main::@6)
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
Adding NOP phi() at start of main::@4
CALL GRAPH
Calls in [] to main:2 

Created 4 initial phi equivalence classes
Coalesced [23] main::k#5 ← main::k#1
Coalesced [24] main::l#3 ← main::l#1
Coalesced [25] main::i#5 ← main::i#1
Coalesced [26] main::j#3 ← main::j#1
Coalesced down to 4 phi equivalence classes
Culled Empty Block (label) @2
Culled Empty Block (label) main::@4
Culled Empty Block (label) main::@11
Culled Empty Block (label) main::@12
Culled Empty Block (label) main::@9
Culled Empty Block (label) main::@10
Renumbering block main::@5 to main::@4
Renumbering block main::@6 to main::@5
Renumbering block main::@7 to main::@6
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()
main: scope:[main]  from @1
  [4] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@3
  [5] (byte) main::i#4 ← phi( main/(byte) 0 main::@3/(byte) main::i#1 )
  to:main::@2
main::@2: scope:[main]  from main::@1 main::@2
  [6] (byte) main::j#2 ← phi( main::@1/(byte) 0 main::@2/(byte) main::j#1 )
  [7] *((const byte*) SCREEN#0 + (byte) main::i#4) ← (byte) main::j#2
  [8] (byte) main::j#1 ← ++ (byte) main::j#2
  [9] if((byte) main::j#1!=(byte) $65) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@2
  [10] (byte) main::i#1 ← ++ (byte) main::i#4
  [11] if((byte) main::i#1!=(byte) $65) goto main::@1
  to:main::@4
main::@4: scope:[main]  from main::@3 main::@6
  [12] (byte) main::k#4 ← phi( main::@3/(byte) 0 main::@6/(byte) main::k#1 )
  to:main::@5
main::@5: scope:[main]  from main::@4 main::@5
  [13] (byte) main::l#2 ← phi( main::@4/(byte) 0 main::@5/(byte) main::l#1 )
  asm { eor#$55 tax  }
  [15] *((const byte*) SCREEN#0 + (byte) main::k#4) ← (byte) main::l#2
  [16] (byte) main::l#1 ← ++ (byte) main::l#2
  [17] if((byte) main::l#1!=(byte) $65) goto main::@5
  to:main::@6
main::@6: scope:[main]  from main::@5
  [18] (byte) main::k#1 ← ++ (byte) main::k#4
  [19] if((byte) main::k#1!=(byte) $65) goto main::@4
  to:main::@return
main::@return: scope:[main]  from main::@6
  [20] return 
  to:@return


VARIABLE REGISTER WEIGHTS
(byte*) SCREEN
(void()) main()
(byte) main::i
(byte) main::i#1 16.5
(byte) main::i#4 24.599999999999998
(byte) main::j
(byte) main::j#1 151.5
(byte) main::j#2 151.5
(byte) main::k
(byte) main::k#1 16.5
(byte) main::k#4 20.499999999999996
(byte) main::l
(byte) main::l#1 151.5
(byte) main::l#2 101.0

Initial phi equivalence classes
[ main::i#4 main::i#1 ]
[ main::j#2 main::j#1 ]
[ main::k#4 main::k#1 ]
[ main::l#2 main::l#1 ]
Complete equivalence classes
[ main::i#4 main::i#1 ]
[ main::j#2 main::j#1 ]
[ main::k#4 main::k#1 ]
[ main::l#2 main::l#1 ]
Allocated zp ZP_BYTE:2 [ main::i#4 main::i#1 ]
Allocated zp ZP_BYTE:3 [ main::j#2 main::j#1 ]
Allocated zp ZP_BYTE:4 [ main::k#4 main::k#1 ]
Allocated zp ZP_BYTE:5 [ main::l#2 main::l#1 ]

INITIAL ASM
//SEG0 File Comments
// Tests that inline ASM clobbering is taken into account when assigning registers
//SEG1 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
//SEG2 Global Constants & labels
  .label SCREEN = $400
//SEG3 @begin
bbegin:
//SEG4 [1] phi from @begin to @1 [phi:@begin->@1]
b1_from_bbegin:
  jmp b1
//SEG5 @1
b1:
//SEG6 [2] call main 
//SEG7 [4] phi from @1 to main [phi:@1->main]
main_from_b1:
  jsr main
//SEG8 [3] phi from @1 to @end [phi:@1->@end]
bend_from_b1:
  jmp bend
//SEG9 @end
bend:
//SEG10 main
main: {
    .label j = 3
    .label i = 2
    .label l = 5
    .label k = 4
  //SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
  b1_from_main:
  //SEG12 [5] phi (byte) main::i#4 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1 
    lda #0
    sta i
    jmp b1
  // First loop with no clobber
  //SEG13 [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
  b1_from_b3:
  //SEG14 [5] phi (byte) main::i#4 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
    jmp b1
  //SEG15 main::@1
  b1:
  //SEG16 [6] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
  b2_from_b1:
  //SEG17 [6] phi (byte) main::j#2 = (byte) 0 [phi:main::@1->main::@2#0] -- vbuz1=vbuc1 
    lda #0
    sta j
    jmp b2
  //SEG18 [6] phi from main::@2 to main::@2 [phi:main::@2->main::@2]
  b2_from_b2:
  //SEG19 [6] phi (byte) main::j#2 = (byte) main::j#1 [phi:main::@2->main::@2#0] -- register_copy 
    jmp b2
  //SEG20 main::@2
  b2:
  //SEG21 [7] *((const byte*) SCREEN#0 + (byte) main::i#4) ← (byte) main::j#2 -- pbuc1_derefidx_vbuz1=vbuz2 
    lda j
    ldy i
    sta SCREEN,y
  //SEG22 [8] (byte) main::j#1 ← ++ (byte) main::j#2 -- vbuz1=_inc_vbuz1 
    inc j
  //SEG23 [9] if((byte) main::j#1!=(byte) $65) goto main::@2 -- vbuz1_neq_vbuc1_then_la1 
    lda #$65
    cmp j
    bne b2_from_b2
    jmp b3
  //SEG24 main::@3
  b3:
  //SEG25 [10] (byte) main::i#1 ← ++ (byte) main::i#4 -- vbuz1=_inc_vbuz1 
    inc i
  //SEG26 [11] if((byte) main::i#1!=(byte) $65) goto main::@1 -- vbuz1_neq_vbuc1_then_la1 
    lda #$65
    cmp i
    bne b1_from_b3
  //SEG27 [12] phi from main::@3 to main::@4 [phi:main::@3->main::@4]
  b4_from_b3:
  //SEG28 [12] phi (byte) main::k#4 = (byte) 0 [phi:main::@3->main::@4#0] -- vbuz1=vbuc1 
    lda #0
    sta k
    jmp b4
  // Then loop with clobbering A&X
  //SEG29 [12] phi from main::@6 to main::@4 [phi:main::@6->main::@4]
  b4_from_b6:
  //SEG30 [12] phi (byte) main::k#4 = (byte) main::k#1 [phi:main::@6->main::@4#0] -- register_copy 
    jmp b4
  //SEG31 main::@4
  b4:
  //SEG32 [13] phi from main::@4 to main::@5 [phi:main::@4->main::@5]
  b5_from_b4:
  //SEG33 [13] phi (byte) main::l#2 = (byte) 0 [phi:main::@4->main::@5#0] -- vbuz1=vbuc1 
    lda #0
    sta l
    jmp b5
  //SEG34 [13] phi from main::@5 to main::@5 [phi:main::@5->main::@5]
  b5_from_b5:
  //SEG35 [13] phi (byte) main::l#2 = (byte) main::l#1 [phi:main::@5->main::@5#0] -- register_copy 
    jmp b5
  //SEG36 main::@5
  b5:
  //SEG37 asm { eor#$55 tax  }
    eor #$55
    tax
  //SEG38 [15] *((const byte*) SCREEN#0 + (byte) main::k#4) ← (byte) main::l#2 -- pbuc1_derefidx_vbuz1=vbuz2 
    lda l
    ldy k
    sta SCREEN,y
  //SEG39 [16] (byte) main::l#1 ← ++ (byte) main::l#2 -- vbuz1=_inc_vbuz1 
    inc l
  //SEG40 [17] if((byte) main::l#1!=(byte) $65) goto main::@5 -- vbuz1_neq_vbuc1_then_la1 
    lda #$65
    cmp l
    bne b5_from_b5
    jmp b6
  //SEG41 main::@6
  b6:
  //SEG42 [18] (byte) main::k#1 ← ++ (byte) main::k#4 -- vbuz1=_inc_vbuz1 
    inc k
  //SEG43 [19] if((byte) main::k#1!=(byte) $65) goto main::@4 -- vbuz1_neq_vbuc1_then_la1 
    lda #$65
    cmp k
    bne b4_from_b6
    jmp breturn
  //SEG44 main::@return
  breturn:
  //SEG45 [20] return 
    rts
}

REGISTER UPLIFT POTENTIAL REGISTERS
Statement asm { eor#$55 tax  } always clobbers reg byte a reg byte x 
Removing always clobbered register reg byte a as potential for zp ZP_BYTE:4 [ main::k#4 main::k#1 ]
Removing always clobbered register reg byte x as potential for zp ZP_BYTE:4 [ main::k#4 main::k#1 ]
Removing always clobbered register reg byte a as potential for zp ZP_BYTE:5 [ main::l#2 main::l#1 ]
Removing always clobbered register reg byte x as potential for zp ZP_BYTE:5 [ main::l#2 main::l#1 ]
Statement [15] *((const byte*) SCREEN#0 + (byte) main::k#4) ← (byte) main::l#2 [ main::k#4 main::l#2 ] ( main:2 [ main::k#4 main::l#2 ] ) always clobbers reg byte a 
Statement asm { eor#$55 tax  } always clobbers reg byte a reg byte x 
Statement [15] *((const byte*) SCREEN#0 + (byte) main::k#4) ← (byte) main::l#2 [ main::k#4 main::l#2 ] ( main:2 [ main::k#4 main::l#2 ] ) always clobbers reg byte a 
Potential registers zp ZP_BYTE:2 [ main::i#4 main::i#1 ] : zp ZP_BYTE:2 , reg byte a , reg byte x , reg byte y , 
Potential registers zp ZP_BYTE:3 [ main::j#2 main::j#1 ] : zp ZP_BYTE:3 , reg byte a , reg byte x , reg byte y , 
Potential registers zp ZP_BYTE:4 [ main::k#4 main::k#1 ] : zp ZP_BYTE:4 , reg byte y , 
Potential registers zp ZP_BYTE:5 [ main::l#2 main::l#1 ] : zp ZP_BYTE:5 , reg byte y , 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 303: zp ZP_BYTE:3 [ main::j#2 main::j#1 ] 252.5: zp ZP_BYTE:5 [ main::l#2 main::l#1 ] 41.1: zp ZP_BYTE:2 [ main::i#4 main::i#1 ] 37: zp ZP_BYTE:4 [ main::k#4 main::k#1 ] 
Uplift Scope [] 

Uplifting [main] best 6638 combination reg byte a [ main::j#2 main::j#1 ] zp ZP_BYTE:5 [ main::l#2 main::l#1 ] reg byte x [ main::i#4 main::i#1 ] reg byte y [ main::k#4 main::k#1 ] 
Uplifting [] best 6638 combination 
Attempting to uplift remaining variables inzp ZP_BYTE:5 [ main::l#2 main::l#1 ]
Uplifting [main] best 6638 combination zp ZP_BYTE:5 [ main::l#2 main::l#1 ] 
Allocated (was zp ZP_BYTE:5) zp ZP_BYTE:2 [ main::l#2 main::l#1 ]

ASSEMBLER BEFORE OPTIMIZATION
//SEG0 File Comments
// Tests that inline ASM clobbering is taken into account when assigning registers
//SEG1 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
//SEG2 Global Constants & labels
  .label SCREEN = $400
//SEG3 @begin
bbegin:
//SEG4 [1] phi from @begin to @1 [phi:@begin->@1]
b1_from_bbegin:
  jmp b1
//SEG5 @1
b1:
//SEG6 [2] call main 
//SEG7 [4] phi from @1 to main [phi:@1->main]
main_from_b1:
  jsr main
//SEG8 [3] phi from @1 to @end [phi:@1->@end]
bend_from_b1:
  jmp bend
//SEG9 @end
bend:
//SEG10 main
main: {
    .label l = 2
  //SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
  b1_from_main:
  //SEG12 [5] phi (byte) main::i#4 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
    ldx #0
    jmp b1
  // First loop with no clobber
  //SEG13 [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
  b1_from_b3:
  //SEG14 [5] phi (byte) main::i#4 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
    jmp b1
  //SEG15 main::@1
  b1:
  //SEG16 [6] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
  b2_from_b1:
  //SEG17 [6] phi (byte) main::j#2 = (byte) 0 [phi:main::@1->main::@2#0] -- vbuaa=vbuc1 
    lda #0
    jmp b2
  //SEG18 [6] phi from main::@2 to main::@2 [phi:main::@2->main::@2]
  b2_from_b2:
  //SEG19 [6] phi (byte) main::j#2 = (byte) main::j#1 [phi:main::@2->main::@2#0] -- register_copy 
    jmp b2
  //SEG20 main::@2
  b2:
  //SEG21 [7] *((const byte*) SCREEN#0 + (byte) main::i#4) ← (byte) main::j#2 -- pbuc1_derefidx_vbuxx=vbuaa 
    sta SCREEN,x
  //SEG22 [8] (byte) main::j#1 ← ++ (byte) main::j#2 -- vbuaa=_inc_vbuaa 
    clc
    adc #1
  //SEG23 [9] if((byte) main::j#1!=(byte) $65) goto main::@2 -- vbuaa_neq_vbuc1_then_la1 
    cmp #$65
    bne b2_from_b2
    jmp b3
  //SEG24 main::@3
  b3:
  //SEG25 [10] (byte) main::i#1 ← ++ (byte) main::i#4 -- vbuxx=_inc_vbuxx 
    inx
  //SEG26 [11] if((byte) main::i#1!=(byte) $65) goto main::@1 -- vbuxx_neq_vbuc1_then_la1 
    cpx #$65
    bne b1_from_b3
  //SEG27 [12] phi from main::@3 to main::@4 [phi:main::@3->main::@4]
  b4_from_b3:
  //SEG28 [12] phi (byte) main::k#4 = (byte) 0 [phi:main::@3->main::@4#0] -- vbuyy=vbuc1 
    ldy #0
    jmp b4
  // Then loop with clobbering A&X
  //SEG29 [12] phi from main::@6 to main::@4 [phi:main::@6->main::@4]
  b4_from_b6:
  //SEG30 [12] phi (byte) main::k#4 = (byte) main::k#1 [phi:main::@6->main::@4#0] -- register_copy 
    jmp b4
  //SEG31 main::@4
  b4:
  //SEG32 [13] phi from main::@4 to main::@5 [phi:main::@4->main::@5]
  b5_from_b4:
  //SEG33 [13] phi (byte) main::l#2 = (byte) 0 [phi:main::@4->main::@5#0] -- vbuz1=vbuc1 
    lda #0
    sta l
    jmp b5
  //SEG34 [13] phi from main::@5 to main::@5 [phi:main::@5->main::@5]
  b5_from_b5:
  //SEG35 [13] phi (byte) main::l#2 = (byte) main::l#1 [phi:main::@5->main::@5#0] -- register_copy 
    jmp b5
  //SEG36 main::@5
  b5:
  //SEG37 asm { eor#$55 tax  }
    eor #$55
    tax
  //SEG38 [15] *((const byte*) SCREEN#0 + (byte) main::k#4) ← (byte) main::l#2 -- pbuc1_derefidx_vbuyy=vbuz1 
    lda l
    sta SCREEN,y
  //SEG39 [16] (byte) main::l#1 ← ++ (byte) main::l#2 -- vbuz1=_inc_vbuz1 
    inc l
  //SEG40 [17] if((byte) main::l#1!=(byte) $65) goto main::@5 -- vbuz1_neq_vbuc1_then_la1 
    lda #$65
    cmp l
    bne b5_from_b5
    jmp b6
  //SEG41 main::@6
  b6:
  //SEG42 [18] (byte) main::k#1 ← ++ (byte) main::k#4 -- vbuyy=_inc_vbuyy 
    iny
  //SEG43 [19] if((byte) main::k#1!=(byte) $65) goto main::@4 -- vbuyy_neq_vbuc1_then_la1 
    cpy #$65
    bne b4_from_b6
    jmp breturn
  //SEG44 main::@return
  breturn:
  //SEG45 [20] return 
    rts
}

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp b1
Removing instruction jmp b2
Removing instruction jmp b3
Removing instruction jmp b4
Removing instruction jmp b5
Removing instruction jmp b6
Removing instruction jmp breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing label b2_from_b2 with b2
Replacing label b1_from_b3 with b1
Replacing label b5_from_b5 with b5
Replacing label b4_from_b6 with b4
Removing instruction b1_from_bbegin:
Removing instruction b1:
Removing instruction main_from_b1:
Removing instruction bend_from_b1:
Removing instruction b1_from_b3:
Removing instruction b2_from_b1:
Removing instruction b2_from_b2:
Removing instruction b4_from_b6:
Removing instruction b5_from_b4:
Removing instruction b5_from_b5:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction bend:
Removing instruction b1_from_main:
Removing instruction b3:
Removing instruction b4_from_b3:
Removing instruction b6:
Removing instruction breturn:
Succesful ASM optimization Pass5UnusedLabelElimination
Updating BasicUpstart to call main directly
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction jmp b1
Removing instruction jmp b2
Removing instruction jmp b4
Removing instruction jmp b5
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction bbegin:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(byte*) SCREEN
(const byte*) SCREEN#0 SCREEN = (byte*) 1024
(void()) main()
(label) main::@1
(label) main::@2
(label) main::@3
(label) main::@4
(label) main::@5
(label) main::@6
(label) main::@return
(byte) main::i
(byte) main::i#1 reg byte x 16.5
(byte) main::i#4 reg byte x 24.599999999999998
(byte) main::j
(byte) main::j#1 reg byte a 151.5
(byte) main::j#2 reg byte a 151.5
(byte) main::k
(byte) main::k#1 reg byte y 16.5
(byte) main::k#4 reg byte y 20.499999999999996
(byte) main::l
(byte) main::l#1 l zp ZP_BYTE:2 151.5
(byte) main::l#2 l zp ZP_BYTE:2 101.0

reg byte x [ main::i#4 main::i#1 ]
reg byte a [ main::j#2 main::j#1 ]
reg byte y [ main::k#4 main::k#1 ]
zp ZP_BYTE:2 [ main::l#2 main::l#1 ]


FINAL ASSEMBLER
Score: 4676

//SEG0 File Comments
// Tests that inline ASM clobbering is taken into account when assigning registers
//SEG1 Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
//SEG2 Global Constants & labels
  .label SCREEN = $400
//SEG3 @begin
//SEG4 [1] phi from @begin to @1 [phi:@begin->@1]
//SEG5 @1
//SEG6 [2] call main 
//SEG7 [4] phi from @1 to main [phi:@1->main]
//SEG8 [3] phi from @1 to @end [phi:@1->@end]
//SEG9 @end
//SEG10 main
main: {
    .label l = 2
  //SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
  //SEG12 [5] phi (byte) main::i#4 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
    ldx #0
  // First loop with no clobber
  //SEG13 [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
  //SEG14 [5] phi (byte) main::i#4 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
  //SEG15 main::@1
  b1:
  //SEG16 [6] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
  //SEG17 [6] phi (byte) main::j#2 = (byte) 0 [phi:main::@1->main::@2#0] -- vbuaa=vbuc1 
    lda #0
  //SEG18 [6] phi from main::@2 to main::@2 [phi:main::@2->main::@2]
  //SEG19 [6] phi (byte) main::j#2 = (byte) main::j#1 [phi:main::@2->main::@2#0] -- register_copy 
  //SEG20 main::@2
  b2:
  //SEG21 [7] *((const byte*) SCREEN#0 + (byte) main::i#4) ← (byte) main::j#2 -- pbuc1_derefidx_vbuxx=vbuaa 
    sta SCREEN,x
  //SEG22 [8] (byte) main::j#1 ← ++ (byte) main::j#2 -- vbuaa=_inc_vbuaa 
    clc
    adc #1
  //SEG23 [9] if((byte) main::j#1!=(byte) $65) goto main::@2 -- vbuaa_neq_vbuc1_then_la1 
    cmp #$65
    bne b2
  //SEG24 main::@3
  //SEG25 [10] (byte) main::i#1 ← ++ (byte) main::i#4 -- vbuxx=_inc_vbuxx 
    inx
  //SEG26 [11] if((byte) main::i#1!=(byte) $65) goto main::@1 -- vbuxx_neq_vbuc1_then_la1 
    cpx #$65
    bne b1
  //SEG27 [12] phi from main::@3 to main::@4 [phi:main::@3->main::@4]
  //SEG28 [12] phi (byte) main::k#4 = (byte) 0 [phi:main::@3->main::@4#0] -- vbuyy=vbuc1 
    ldy #0
  // Then loop with clobbering A&X
  //SEG29 [12] phi from main::@6 to main::@4 [phi:main::@6->main::@4]
  //SEG30 [12] phi (byte) main::k#4 = (byte) main::k#1 [phi:main::@6->main::@4#0] -- register_copy 
  //SEG31 main::@4
  b4:
  //SEG32 [13] phi from main::@4 to main::@5 [phi:main::@4->main::@5]
  //SEG33 [13] phi (byte) main::l#2 = (byte) 0 [phi:main::@4->main::@5#0] -- vbuz1=vbuc1 
    lda #0
    sta l
  //SEG34 [13] phi from main::@5 to main::@5 [phi:main::@5->main::@5]
  //SEG35 [13] phi (byte) main::l#2 = (byte) main::l#1 [phi:main::@5->main::@5#0] -- register_copy 
  //SEG36 main::@5
  b5:
  //SEG37 asm { eor#$55 tax  }
    eor #$55
    tax
  //SEG38 [15] *((const byte*) SCREEN#0 + (byte) main::k#4) ← (byte) main::l#2 -- pbuc1_derefidx_vbuyy=vbuz1 
    lda l
    sta SCREEN,y
  //SEG39 [16] (byte) main::l#1 ← ++ (byte) main::l#2 -- vbuz1=_inc_vbuz1 
    inc l
  //SEG40 [17] if((byte) main::l#1!=(byte) $65) goto main::@5 -- vbuz1_neq_vbuc1_then_la1 
    lda #$65
    cmp l
    bne b5
  //SEG41 main::@6
  //SEG42 [18] (byte) main::k#1 ← ++ (byte) main::k#4 -- vbuyy=_inc_vbuyy 
    iny
  //SEG43 [19] if((byte) main::k#1!=(byte) $65) goto main::@4 -- vbuyy_neq_vbuc1_then_la1 
    cpy #$65
    bne b4
  //SEG44 main::@return
  //SEG45 [20] return 
    rts
}