mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-09-09 08:54:40 +00:00
502 lines
15 KiB
Plaintext
502 lines
15 KiB
Plaintext
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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to:@1
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(void()) main()
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main: scope:[main] from @1
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(signed byte) main::dy#0 ← (signed byte) -$80
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to:main::@1
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main::@1: scope:[main] from main main::@2
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(signed byte) main::dy#2 ← phi( main/(signed byte) main::dy#0 main::@2/(signed byte) main::dy#1 )
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(signed byte) debug::dy#0 ← (signed byte) main::dy#2
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call debug
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to:main::@2
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main::@2: scope:[main] from main::@1
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(signed byte) main::dy#3 ← phi( main::@1/(signed byte) main::dy#2 )
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(signed byte) main::dy#1 ← (signed byte) main::dy#3 + rangenext(-$80,$7f)
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(bool~) main::$1 ← (signed byte) main::dy#1 != rangelast(-$80,$7f)
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if((bool~) main::$1) goto main::@1
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to:main::@return
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main::@return: scope:[main] from main::@2
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return
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to:@return
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(void()) debug((signed byte) debug::dy)
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debug: scope:[debug] from main::@1
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(signed byte) debug::dy#1 ← phi( main::@1/(signed byte) debug::dy#0 )
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(byte) debug::i#0 ← (byte)(signed byte) debug::dy#1
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(bool~) debug::$0 ← (signed byte) debug::dy#1 > (number) -$78
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(bool~) debug::$1 ← ! (bool~) debug::$0
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if((bool~) debug::$1) goto debug::@return
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to:debug::@1
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debug::@1: scope:[debug] from debug
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(byte) debug::i#1 ← phi( debug/(byte) debug::i#0 )
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*((const byte*) SCREEN + (byte) debug::i#1) ← (number) $a
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to:debug::@return
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debug::@return: scope:[debug] from debug debug::@1
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return
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to:@return
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@1: scope:[] from @begin
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call main
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to:@2
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@2: scope:[] from @1
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to:@end
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@end: scope:[] from @2
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SYMBOL TABLE SSA
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(label) @1
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(label) @2
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(label) @begin
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(label) @end
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(const byte*) SCREEN = (byte*)(number) $400
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(void()) debug((signed byte) debug::dy)
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(bool~) debug::$0
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(bool~) debug::$1
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(label) debug::@1
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(label) debug::@return
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(signed byte) debug::dy
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(signed byte) debug::dy#0
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(signed byte) debug::dy#1
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(byte) debug::i
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(byte) debug::i#0
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(byte) debug::i#1
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(void()) main()
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(bool~) main::$1
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(label) main::@1
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(label) main::@2
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(label) main::@return
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(signed byte) main::dy
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(signed byte) main::dy#0
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(signed byte) main::dy#1
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(signed byte) main::dy#2
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(signed byte) main::dy#3
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Adding number conversion cast (snumber) -$78 in (bool~) debug::$0 ← (signed byte) debug::dy#1 > (number) -$78
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Adding number conversion cast (unumber) $a in *((const byte*) SCREEN + (byte) debug::i#1) ← (number) $a
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast *((const byte*) SCREEN + (byte) debug::i#1) ← (unumber)(number) $a
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Successful SSA optimization Pass2InlineCast
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Simplifying constant pointer cast (byte*) 1024
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Simplifying constant integer cast -$78
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Simplifying constant integer cast $a
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Successful SSA optimization PassNCastSimplification
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Finalized signed number type (signed byte) -$78
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Finalized unsigned number type (byte) $a
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Inversing boolean not [12] (bool~) debug::$1 ← (signed byte) debug::dy#1 <= (signed byte) -$78 from [11] (bool~) debug::$0 ← (signed byte) debug::dy#1 > (signed byte) -$78
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Successful SSA optimization Pass2UnaryNotSimplification
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Alias main::dy#2 = main::dy#3
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Alias debug::i#0 = debug::i#1
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Successful SSA optimization Pass2AliasElimination
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Identical Phi Values (signed byte) debug::dy#1 (signed byte) debug::dy#0
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Successful SSA optimization Pass2IdenticalPhiElimination
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Simple Condition (bool~) main::$1 [6] if((signed byte) main::dy#1!=rangelast(-$80,$7f)) goto main::@1
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Simple Condition (bool~) debug::$1 [11] if((signed byte) debug::dy#0<=(signed byte) -$78) goto debug::@return
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const signed byte) main::dy#0 = -$80
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Successful SSA optimization Pass2ConstantIdentification
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Resolved ranged next value [4] main::dy#1 ← ++ main::dy#2 to ++
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Resolved ranged comparison value [6] if(main::dy#1!=rangelast(-$80,$7f)) goto main::@1 to (number) -$80
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Adding number conversion cast (snumber) -$80 in if((signed byte) main::dy#1!=(number) -$80) goto main::@1
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant integer cast -$80
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Successful SSA optimization PassNCastSimplification
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Finalized signed number type (signed byte) -$80
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Inlining Noop Cast [6] (byte) debug::i#0 ← (byte)(signed byte) debug::dy#0 keeping debug::dy#0
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Successful SSA optimization Pass2NopCastInlining
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Inlining constant with var siblings (const signed byte) main::dy#0
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Constant inlined main::dy#0 = (signed byte) -$80
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Successful SSA optimization Pass2ConstantInlining
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Added new block during phi lifting main::@3(between main::@2 and main::@1)
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @2
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Adding NOP phi() at start of @end
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Adding NOP phi() at start of main
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CALL GRAPH
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Calls in [] to main:2
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Calls in [main] to debug:8
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Created 1 initial phi equivalence classes
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Coalesced [12] main::dy#4 ← main::dy#1
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Coalesced down to 1 phi equivalence classes
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Culled Empty Block (label) @2
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Culled Empty Block (label) main::@3
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @end
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Adding NOP phi() at start of main
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FINAL CONTROL FLOW GRAPH
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@begin: scope:[] from
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[0] phi()
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to:@1
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@1: scope:[] from @begin
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[1] phi()
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[2] call main
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to:@end
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@end: scope:[] from @1
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[3] phi()
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(void()) main()
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main: scope:[main] from @1
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[4] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@2
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[5] (signed byte) main::dy#2 ← phi( main/(signed byte) -$80 main::@2/(signed byte) main::dy#1 )
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[6] (signed byte) debug::dy#0 ← (signed byte) main::dy#2
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[7] call debug
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to:main::@2
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main::@2: scope:[main] from main::@1
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[8] (signed byte) main::dy#1 ← ++ (signed byte) main::dy#2
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[9] if((signed byte) main::dy#1!=(signed byte) -$80) goto main::@1
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to:main::@return
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main::@return: scope:[main] from main::@2
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[10] return
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to:@return
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(void()) debug((signed byte) debug::dy)
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debug: scope:[debug] from main::@1
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[11] if((signed byte) debug::dy#0<=(signed byte) -$78) goto debug::@return
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to:debug::@1
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debug::@1: scope:[debug] from debug
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[12] *((const byte*) SCREEN + (byte)(signed byte) debug::dy#0) ← (byte) $a
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to:debug::@return
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debug::@return: scope:[debug] from debug debug::@1
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[13] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(void()) debug((signed byte) debug::dy)
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(signed byte) debug::dy
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(signed byte) debug::dy#0 551.0
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(byte) debug::i
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(void()) main()
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(signed byte) main::dy
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(signed byte) main::dy#1 151.5
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(signed byte) main::dy#2 101.0
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Initial phi equivalence classes
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[ main::dy#2 main::dy#1 ]
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Added variable debug::dy#0 to live range equivalence class [ debug::dy#0 ]
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Complete equivalence classes
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[ main::dy#2 main::dy#1 ]
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[ debug::dy#0 ]
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Allocated zp[1]:2 [ main::dy#2 main::dy#1 ]
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Allocated zp[1]:3 [ debug::dy#0 ]
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INITIAL ASM
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Target platform is c64basic / MOS6502X
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// File Comments
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// Illustrates problem with > comparison of signed chars.
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// Reported by Danny Spijksma
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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// @begin
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__bbegin:
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// [1] phi from @begin to @1 [phi:@begin->@1]
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__b1_from___bbegin:
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jmp __b1
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// @1
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__b1:
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// [2] call main
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// [4] phi from @1 to main [phi:@1->main]
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main_from___b1:
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jsr main
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// [3] phi from @1 to @end [phi:@1->@end]
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__bend_from___b1:
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jmp __bend
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// @end
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__bend:
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// main
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main: {
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.label dy = 2
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// [5] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [5] phi (signed byte) main::dy#2 = (signed byte) -$80 [phi:main->main::@1#0] -- vbsz1=vbsc1
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lda #-$80
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sta.z dy
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jmp __b1
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// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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__b1_from___b2:
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// [5] phi (signed byte) main::dy#2 = (signed byte) main::dy#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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// main::@1
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__b1:
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// [6] (signed byte) debug::dy#0 ← (signed byte) main::dy#2 -- vbsz1=vbsz2
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lda.z dy
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sta.z debug.dy
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// [7] call debug
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jsr debug
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jmp __b2
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// main::@2
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__b2:
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// [8] (signed byte) main::dy#1 ← ++ (signed byte) main::dy#2 -- vbsz1=_inc_vbsz1
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inc.z dy
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// [9] if((signed byte) main::dy#1!=(signed byte) -$80) goto main::@1 -- vbsz1_neq_vbsc1_then_la1
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lda #-$80
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cmp.z dy
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bne __b1_from___b2
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jmp __breturn
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// main::@return
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__breturn:
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// [10] return
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rts
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}
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// debug
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// debug(signed byte zp(3) dy)
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debug: {
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.label dy = 3
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// [11] if((signed byte) debug::dy#0<=(signed byte) -$78) goto debug::@return -- vbsz1_le_vbsc1_then_la1
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lda #-$78
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sec
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sbc.z dy
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bvc !+
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eor #$80
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!:
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bpl __breturn
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jmp __b1
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// debug::@1
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__b1:
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// [12] *((const byte*) SCREEN + (byte)(signed byte) debug::dy#0) ← (byte) $a -- pbuc1_derefidx_vbuz1=vbuc2
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lda #$a
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ldy.z dy
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sta SCREEN,y
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jmp __breturn
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// debug::@return
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__breturn:
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// [13] return
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rts
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}
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// File Data
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [11] if((signed byte) debug::dy#0<=(signed byte) -$78) goto debug::@return [ debug::dy#0 ] ( main:2::debug:7 [ main::dy#2 debug::dy#0 ] { { debug::dy#0 = main::dy#2 } } ) always clobbers reg byte a
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Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::dy#2 main::dy#1 ]
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Removing always clobbered register reg byte a as potential for zp[1]:3 [ debug::dy#0 ]
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Statement [12] *((const byte*) SCREEN + (byte)(signed byte) debug::dy#0) ← (byte) $a [ ] ( main:2::debug:7 [ main::dy#2 ] { { debug::dy#0 = main::dy#2 } } ) always clobbers reg byte a
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Statement [11] if((signed byte) debug::dy#0<=(signed byte) -$78) goto debug::@return [ debug::dy#0 ] ( main:2::debug:7 [ main::dy#2 debug::dy#0 ] { { debug::dy#0 = main::dy#2 } } ) always clobbers reg byte a
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Statement [12] *((const byte*) SCREEN + (byte)(signed byte) debug::dy#0) ← (byte) $a [ ] ( main:2::debug:7 [ main::dy#2 ] { { debug::dy#0 = main::dy#2 } } ) always clobbers reg byte a
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Potential registers zp[1]:2 [ main::dy#2 main::dy#1 ] : zp[1]:2 , reg byte x , reg byte y ,
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Potential registers zp[1]:3 [ debug::dy#0 ] : zp[1]:3 , reg byte x , reg byte y ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [debug] 551: zp[1]:3 [ debug::dy#0 ]
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Uplift Scope [main] 252.5: zp[1]:2 [ main::dy#2 main::dy#1 ]
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Uplift Scope []
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Uplifting [debug] best 437 combination reg byte x [ debug::dy#0 ]
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Uplifting [main] best 317 combination reg byte x [ main::dy#2 main::dy#1 ]
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Uplifting [] best 317 combination
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Illustrates problem with > comparison of signed chars.
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// Reported by Danny Spijksma
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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// @begin
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__bbegin:
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// [1] phi from @begin to @1 [phi:@begin->@1]
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__b1_from___bbegin:
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jmp __b1
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// @1
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__b1:
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// [2] call main
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// [4] phi from @1 to main [phi:@1->main]
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main_from___b1:
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jsr main
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// [3] phi from @1 to @end [phi:@1->@end]
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__bend_from___b1:
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jmp __bend
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// @end
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__bend:
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// main
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main: {
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// [5] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [5] phi (signed byte) main::dy#2 = (signed byte) -$80 [phi:main->main::@1#0] -- vbsxx=vbsc1
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ldx #-$80
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jmp __b1
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// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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__b1_from___b2:
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// [5] phi (signed byte) main::dy#2 = (signed byte) main::dy#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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// main::@1
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__b1:
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// [6] (signed byte) debug::dy#0 ← (signed byte) main::dy#2
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// [7] call debug
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jsr debug
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jmp __b2
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// main::@2
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__b2:
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// [8] (signed byte) main::dy#1 ← ++ (signed byte) main::dy#2 -- vbsxx=_inc_vbsxx
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inx
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// [9] if((signed byte) main::dy#1!=(signed byte) -$80) goto main::@1 -- vbsxx_neq_vbsc1_then_la1
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cpx #-$80
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bne __b1_from___b2
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jmp __breturn
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// main::@return
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__breturn:
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// [10] return
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rts
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}
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// debug
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// debug(signed byte register(X) dy)
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debug: {
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// [11] if((signed byte) debug::dy#0<=(signed byte) -$78) goto debug::@return -- vbsxx_le_vbsc1_then_la1
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txa
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sec
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sbc #-$78
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beq __breturn
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bvc !+
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eor #$80
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!:
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bmi __breturn
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jmp __b1
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// debug::@1
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__b1:
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// [12] *((const byte*) SCREEN + (byte)(signed byte) debug::dy#0) ← (byte) $a -- pbuc1_derefidx_vbuxx=vbuc2
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lda #$a
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sta SCREEN,x
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jmp __breturn
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// debug::@return
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__breturn:
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// [13] return
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rts
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}
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// File Data
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ASSEMBLER OPTIMIZATIONS
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Removing instruction jmp __b1
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Removing instruction jmp __bend
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Removing instruction jmp __b1
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Removing instruction jmp __b2
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Removing instruction jmp __breturn
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Removing instruction jmp __b1
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Removing instruction jmp __breturn
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Succesful ASM optimization Pass5NextJumpElimination
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Replacing label __b1_from___b2 with __b1
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Removing instruction __b1_from___bbegin:
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Removing instruction __b1:
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Removing instruction main_from___b1:
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Removing instruction __bend_from___b1:
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Removing instruction __b1_from___b2:
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Succesful ASM optimization Pass5RedundantLabelElimination
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Removing instruction __bbegin:
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Removing instruction __bend:
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Removing instruction __b1_from_main:
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Removing instruction __b2:
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Removing instruction __breturn:
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Removing instruction __b1:
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Succesful ASM optimization Pass5UnusedLabelElimination
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Removing instruction jsr main
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Succesful ASM optimization Pass5SkipBegin
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Removing instruction jmp __b1
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Succesful ASM optimization Pass5NextJumpElimination
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FINAL SYMBOL TABLE
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(label) @1
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(label) @begin
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(label) @end
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(const byte*) SCREEN = (byte*) 1024
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(void()) debug((signed byte) debug::dy)
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(label) debug::@1
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(label) debug::@return
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(signed byte) debug::dy
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(signed byte) debug::dy#0 reg byte x 551.0
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(byte) debug::i
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(void()) main()
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(label) main::@1
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(label) main::@2
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(label) main::@return
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(signed byte) main::dy
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(signed byte) main::dy#1 reg byte x 151.5
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(signed byte) main::dy#2 reg byte x 101.0
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reg byte x [ main::dy#2 main::dy#1 ]
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reg byte x [ debug::dy#0 ]
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FINAL ASSEMBLER
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Score: 179
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// File Comments
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// Illustrates problem with > comparison of signed chars.
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// Reported by Danny Spijksma
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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// @begin
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// [1] phi from @begin to @1 [phi:@begin->@1]
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// @1
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// [2] call main
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// [4] phi from @1 to main [phi:@1->main]
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// [3] phi from @1 to @end [phi:@1->@end]
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// @end
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// main
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main: {
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// [5] phi from main to main::@1 [phi:main->main::@1]
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// [5] phi (signed byte) main::dy#2 = (signed byte) -$80 [phi:main->main::@1#0] -- vbsxx=vbsc1
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ldx #-$80
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// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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// [5] phi (signed byte) main::dy#2 = (signed byte) main::dy#1 [phi:main::@2->main::@1#0] -- register_copy
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// main::@1
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__b1:
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// debug(dy)
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// [6] (signed byte) debug::dy#0 ← (signed byte) main::dy#2
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// [7] call debug
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jsr debug
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// main::@2
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// for(signed char dy:-128..127)
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// [8] (signed byte) main::dy#1 ← ++ (signed byte) main::dy#2 -- vbsxx=_inc_vbsxx
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inx
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// [9] if((signed byte) main::dy#1!=(signed byte) -$80) goto main::@1 -- vbsxx_neq_vbsc1_then_la1
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cpx #-$80
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bne __b1
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// main::@return
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// }
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// [10] return
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rts
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}
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// debug
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// debug(signed byte register(X) dy)
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debug: {
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// if (dy > -120)
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// [11] if((signed byte) debug::dy#0<=(signed byte) -$78) goto debug::@return -- vbsxx_le_vbsc1_then_la1
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txa
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sec
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sbc #-$78
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beq __breturn
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bvc !+
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eor #$80
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!:
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bmi __breturn
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// debug::@1
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// SCREEN[i] = 10
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// [12] *((const byte*) SCREEN + (byte)(signed byte) debug::dy#0) ← (byte) $a -- pbuc1_derefidx_vbuxx=vbuc2
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lda #$a
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sta SCREEN,x
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// debug::@return
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__breturn:
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// }
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// [13] return
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rts
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}
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// File Data
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