mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-10-21 17:24:39 +00:00
601 lines
18 KiB
Plaintext
601 lines
18 KiB
Plaintext
Adding pointer type conversion cast (byte*) SCREEN in (byte*) SCREEN ← (number) $400
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Identified constant variable (byte) a
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Culled Empty Block (label) main::@2
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Culled Empty Block (label) @1
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Culled Empty Block (label) sum::@1
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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(byte*) SCREEN#0 ← ((byte*)) (number) $400
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(byte) a#0 ← (byte) 'a'
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to:@2
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main: scope:[main] from @2
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(byte) main::i#0 ← (number) 0
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(byte) main::b#0 ← (byte) 0
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to:main::@1
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main::@1: scope:[main] from main main::@3
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(byte) main::i#3 ← phi( main/(byte) main::i#0 main::@3/(byte) main::i#1 )
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(byte) main::b#2 ← phi( main/(byte) main::b#0 main::@3/(byte) main::b#1 )
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(byte) sum::a#0 ← (byte) a#0
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(byte) sum::b#0 ← (byte) main::b#2
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call sum
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(byte) sum::return#0 ← (byte) sum::return#2
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to:main::@3
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main::@3: scope:[main] from main::@1
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(byte) main::b#3 ← phi( main::@1/(byte) main::b#2 )
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(byte) main::i#2 ← phi( main::@1/(byte) main::i#3 )
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(byte) sum::return#3 ← phi( main::@1/(byte) sum::return#0 )
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(byte~) main::$0 ← (byte) sum::return#3
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*((byte*) SCREEN#0 + (byte) main::i#2) ← (byte~) main::$0
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(byte) main::i#1 ← ++ (byte) main::i#2
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(byte) main::b#1 ← (byte) main::b#3 + rangenext(0,$a)
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(bool~) main::$1 ← (byte) main::b#1 != rangelast(0,$a)
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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::@3
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return
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to:@return
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sum: scope:[sum] from main::@1
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(byte) sum::b#1 ← phi( main::@1/(byte) sum::b#0 )
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(byte) sum::a#1 ← phi( main::@1/(byte) sum::a#0 )
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(byte~) sum::$0 ← (byte) sum::a#1 + (byte) sum::b#1
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(byte) sum::r#0 ← (byte~) sum::$0
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(byte) sum::return#1 ← (byte) sum::r#0
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to:sum::@return
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sum::@return: scope:[sum] from sum
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(byte) sum::return#4 ← phi( sum/(byte) sum::return#1 )
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(byte) sum::return#2 ← (byte) sum::return#4
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return
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to:@return
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@2: scope:[] from @begin
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call main
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to:@3
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@3: scope:[] from @2
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to:@end
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@end: scope:[] from @3
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SYMBOL TABLE SSA
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(label) @2
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(label) @3
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(label) @begin
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(label) @end
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(byte*) SCREEN
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(byte*) SCREEN#0
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(byte) a
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(byte) a#0
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(void()) main()
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(byte~) main::$0
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(bool~) main::$1
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(label) main::@1
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(label) main::@3
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(label) main::@return
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(byte) main::b
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(byte) main::b#0
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(byte) main::b#1
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(byte) main::b#2
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(byte) main::b#3
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(byte) main::i
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(byte) main::i#0
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(byte) main::i#1
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(byte) main::i#2
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(byte) main::i#3
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(byte()) sum((byte) sum::a , (byte) sum::b)
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(byte~) sum::$0
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(label) sum::@return
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(byte) sum::a
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(byte) sum::a#0
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(byte) sum::a#1
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(byte) sum::b
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(byte) sum::b#0
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(byte) sum::b#1
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(byte) sum::r
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(byte) sum::r#0
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(byte) sum::return
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(byte) sum::return#0
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(byte) sum::return#1
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(byte) sum::return#2
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(byte) sum::return#3
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(byte) sum::return#4
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Adding number conversion cast (unumber) 0 in (byte) main::i#0 ← (number) 0
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast (byte*) SCREEN#0 ← (byte*)(number) $400
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Inlining cast (byte) main::i#0 ← (unumber)(number) 0
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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 0
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 0
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias (byte) sum::return#0 = (byte) sum::return#3
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Alias (byte) main::i#2 = (byte) main::i#3
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Alias (byte) main::b#2 = (byte) main::b#3
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Alias (byte) sum::return#1 = (byte) sum::r#0 (byte~) sum::$0 (byte) sum::return#4 (byte) sum::return#2
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Successful SSA optimization Pass2AliasElimination
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Identical Phi Values (byte) sum::a#1 (byte) sum::a#0
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Identical Phi Values (byte) sum::b#1 (byte) sum::b#0
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Successful SSA optimization Pass2IdenticalPhiElimination
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Simple Condition (bool~) main::$1 [15] if((byte) main::b#1!=rangelast(0,$a)) goto main::@1
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const byte*) SCREEN#0 = (byte*) 1024
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Constant (const byte) a#0 = 'a'
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Constant (const byte) main::i#0 = 0
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Constant (const byte) main::b#0 = 0
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Successful SSA optimization Pass2ConstantIdentification
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Constant (const byte) sum::a#0 = a#0
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Successful SSA optimization Pass2ConstantIdentification
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Resolved ranged next value [13] main::b#1 ← ++ main::b#2 to ++
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Resolved ranged comparison value [15] if(main::b#1!=rangelast(0,$a)) goto main::@1 to (number) $b
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Adding number conversion cast (unumber) $b in if((byte) main::b#1!=(number) $b) goto main::@1
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant integer cast $b
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) $b
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Inlining constant with var siblings (const byte) main::i#0
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Inlining constant with var siblings (const byte) main::b#0
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Constant inlined main::i#0 = (byte) 0
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Constant inlined sum::a#0 = (const byte) a#0
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Constant inlined main::b#0 = (byte) 0
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Successful SSA optimization Pass2ConstantInlining
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Added new block during phi lifting main::@4(between main::@3 and main::@1)
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @2
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Adding NOP phi() at start of @3
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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 sum:8
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Created 2 initial phi equivalence classes
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Coalesced [16] main::b#4 ← main::b#1
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Coalesced [17] main::i#4 ← main::i#1
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Coalesced down to 2 phi equivalence classes
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Culled Empty Block (label) @3
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Culled Empty Block (label) main::@4
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Renumbering block @2 to @1
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Renumbering block main::@3 to main::@2
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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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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] (byte) main::i#2 ← phi( main/(byte) 0 main::@2/(byte) main::i#1 )
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[5] (byte) main::b#2 ← phi( main/(byte) 0 main::@2/(byte) main::b#1 )
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[6] (byte) sum::b#0 ← (byte) main::b#2
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[7] call sum
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[8] (byte) sum::return#0 ← (byte) sum::return#1
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to:main::@2
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main::@2: scope:[main] from main::@1
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[9] (byte~) main::$0 ← (byte) sum::return#0
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[10] *((const byte*) SCREEN#0 + (byte) main::i#2) ← (byte~) main::$0
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[11] (byte) main::i#1 ← ++ (byte) main::i#2
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[12] (byte) main::b#1 ← ++ (byte) main::b#2
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[13] if((byte) main::b#1!=(byte) $b) 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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[14] return
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to:@return
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sum: scope:[sum] from main::@1
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[15] (byte) sum::return#1 ← (const byte) a#0 + (byte) sum::b#0
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to:sum::@return
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sum::@return: scope:[sum] from sum
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[16] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(byte*) SCREEN
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(byte) a
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(void()) main()
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(byte~) main::$0 22.0
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(byte) main::b
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(byte) main::b#1 16.5
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(byte) main::b#2 4.714285714285714
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(byte) main::i
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(byte) main::i#1 7.333333333333333
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(byte) main::i#2 5.5
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(byte()) sum((byte) sum::a , (byte) sum::b)
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(byte) sum::a
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(byte) sum::b
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(byte) sum::b#0 13.0
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(byte) sum::r
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(byte) sum::return
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(byte) sum::return#0 22.0
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(byte) sum::return#1 4.333333333333333
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Initial phi equivalence classes
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[ main::b#2 main::b#1 ]
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[ main::i#2 main::i#1 ]
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Added variable sum::b#0 to zero page equivalence class [ sum::b#0 ]
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Added variable sum::return#0 to zero page equivalence class [ sum::return#0 ]
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Added variable main::$0 to zero page equivalence class [ main::$0 ]
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Added variable sum::return#1 to zero page equivalence class [ sum::return#1 ]
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Complete equivalence classes
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[ main::b#2 main::b#1 ]
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[ main::i#2 main::i#1 ]
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[ sum::b#0 ]
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[ sum::return#0 ]
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[ main::$0 ]
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[ sum::return#1 ]
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Allocated zp ZP_BYTE:2 [ main::b#2 main::b#1 ]
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Allocated zp ZP_BYTE:3 [ main::i#2 main::i#1 ]
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Allocated zp ZP_BYTE:4 [ sum::b#0 ]
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Allocated zp ZP_BYTE:5 [ sum::return#0 ]
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Allocated zp ZP_BYTE:6 [ main::$0 ]
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Allocated zp ZP_BYTE:7 [ sum::return#1 ]
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INITIAL ASM
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//SEG0 File Comments
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/* Tests that block comments are compiled correctly
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* Has a bunch of comments that will be moved into the generated ASM
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*/
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//SEG1 Basic Upstart
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.pc = $801 "Basic"
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:BasicUpstart(bbegin)
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.pc = $80d "Program"
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//SEG2 Global Constants & labels
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// The C64 screen
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.label SCREEN = $400
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// One of the bytes used for addition
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.const a = 'a'
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//SEG3 @begin
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bbegin:
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//SEG4 [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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//SEG5 @1
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b1:
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//SEG6 [2] call main
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//SEG7 [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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//SEG8 [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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//SEG9 @end
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bend:
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//SEG10 main
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/* The program entry point */
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main: {
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.label _0 = 6
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.label i = 3
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.label b = 2
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//SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
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b1_from_main:
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//SEG12 [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
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lda #0
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sta i
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//SEG13 [5] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#1] -- vbuz1=vbuc1
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lda #0
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sta b
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jmp b1
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// Do some sums
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//SEG14 [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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b1_from_b2:
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//SEG15 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy
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//SEG16 [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#1] -- register_copy
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jmp b1
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//SEG17 main::@1
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b1:
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//SEG18 [6] (byte) sum::b#0 ← (byte) main::b#2 -- vbuz1=vbuz2
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lda b
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sta sum.b
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//SEG19 [7] call sum
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jsr sum
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//SEG20 [8] (byte) sum::return#0 ← (byte) sum::return#1 -- vbuz1=vbuz2
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lda sum.return_1
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sta sum.return
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jmp b2
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//SEG21 main::@2
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b2:
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//SEG22 [9] (byte~) main::$0 ← (byte) sum::return#0 -- vbuz1=vbuz2
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lda sum.return
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sta _0
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//SEG23 [10] *((const byte*) SCREEN#0 + (byte) main::i#2) ← (byte~) main::$0 -- pbuc1_derefidx_vbuz1=vbuz2
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// Output the result on the screen
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lda _0
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ldy i
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sta SCREEN,y
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//SEG24 [11] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1
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inc i
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//SEG25 [12] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuz1=_inc_vbuz1
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inc b
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//SEG26 [13] if((byte) main::b#1!=(byte) $b) goto main::@1 -- vbuz1_neq_vbuc1_then_la1
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lda #$b
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cmp b
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bne b1_from_b2
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jmp breturn
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//SEG27 main::@return
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breturn:
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//SEG28 [14] return
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rts
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}
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//SEG29 sum
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/** Adds up two bytes and returns the result
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* a - the first byte
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* b - the second byte
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* Returns the sum pf the two bytes
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*/
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// sum(byte zeropage(4) b)
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sum: {
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.label b = 4
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.label return = 5
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.label return_1 = 7
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//SEG30 [15] (byte) sum::return#1 ← (const byte) a#0 + (byte) sum::b#0 -- vbuz1=vbuc1_plus_vbuz2
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lax b
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axs #-[a]
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stx return_1
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jmp breturn
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//SEG31 sum::@return
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breturn:
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//SEG32 [16] return
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rts
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}
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REGISTER UPLIFT POTENTIAL REGISTERS
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Potential registers zp ZP_BYTE:2 [ main::b#2 main::b#1 ] : zp ZP_BYTE:2 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp ZP_BYTE:3 [ main::i#2 main::i#1 ] : zp ZP_BYTE:3 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp ZP_BYTE:4 [ sum::b#0 ] : zp ZP_BYTE:4 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp ZP_BYTE:5 [ sum::return#0 ] : zp ZP_BYTE:5 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp ZP_BYTE:6 [ main::$0 ] : zp ZP_BYTE:6 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp ZP_BYTE:7 [ sum::return#1 ] : zp ZP_BYTE:7 , reg byte a , reg byte x , reg byte y ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [main] 22: zp ZP_BYTE:6 [ main::$0 ] 21.21: zp ZP_BYTE:2 [ main::b#2 main::b#1 ] 12.83: zp ZP_BYTE:3 [ main::i#2 main::i#1 ]
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Uplift Scope [sum] 22: zp ZP_BYTE:5 [ sum::return#0 ] 13: zp ZP_BYTE:4 [ sum::b#0 ] 4.33: zp ZP_BYTE:7 [ sum::return#1 ]
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Uplift Scope []
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Uplifting [main] best 630 combination reg byte a [ main::$0 ] zp ZP_BYTE:2 [ main::b#2 main::b#1 ] reg byte y [ main::i#2 main::i#1 ]
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Uplifting [sum] best 506 combination reg byte a [ sum::return#0 ] reg byte a [ sum::b#0 ] reg byte a [ sum::return#1 ]
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Uplifting [] best 506 combination
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Attempting to uplift remaining variables inzp ZP_BYTE:2 [ main::b#2 main::b#1 ]
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Uplifting [main] best 406 combination reg byte x [ main::b#2 main::b#1 ]
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ASSEMBLER BEFORE OPTIMIZATION
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//SEG0 File Comments
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/* Tests that block comments are compiled correctly
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* Has a bunch of comments that will be moved into the generated ASM
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*/
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//SEG1 Basic Upstart
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.pc = $801 "Basic"
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:BasicUpstart(bbegin)
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.pc = $80d "Program"
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//SEG2 Global Constants & labels
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// The C64 screen
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.label SCREEN = $400
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// One of the bytes used for addition
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.const a = 'a'
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//SEG3 @begin
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bbegin:
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//SEG4 [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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//SEG5 @1
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b1:
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//SEG6 [2] call main
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//SEG7 [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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//SEG8 [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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//SEG9 @end
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bend:
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//SEG10 main
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/* The program entry point */
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main: {
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//SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
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b1_from_main:
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//SEG12 [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuyy=vbuc1
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ldy #0
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//SEG13 [5] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#1] -- vbuxx=vbuc1
|
|
ldx #0
|
|
jmp b1
|
|
// Do some sums
|
|
//SEG14 [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
|
|
b1_from_b2:
|
|
//SEG15 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy
|
|
//SEG16 [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#1] -- register_copy
|
|
jmp b1
|
|
//SEG17 main::@1
|
|
b1:
|
|
//SEG18 [6] (byte) sum::b#0 ← (byte) main::b#2 -- vbuaa=vbuxx
|
|
txa
|
|
//SEG19 [7] call sum
|
|
jsr sum
|
|
//SEG20 [8] (byte) sum::return#0 ← (byte) sum::return#1
|
|
jmp b2
|
|
//SEG21 main::@2
|
|
b2:
|
|
//SEG22 [9] (byte~) main::$0 ← (byte) sum::return#0
|
|
//SEG23 [10] *((const byte*) SCREEN#0 + (byte) main::i#2) ← (byte~) main::$0 -- pbuc1_derefidx_vbuyy=vbuaa
|
|
// Output the result on the screen
|
|
sta SCREEN,y
|
|
//SEG24 [11] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuyy=_inc_vbuyy
|
|
iny
|
|
//SEG25 [12] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuxx=_inc_vbuxx
|
|
inx
|
|
//SEG26 [13] if((byte) main::b#1!=(byte) $b) goto main::@1 -- vbuxx_neq_vbuc1_then_la1
|
|
cpx #$b
|
|
bne b1_from_b2
|
|
jmp breturn
|
|
//SEG27 main::@return
|
|
breturn:
|
|
//SEG28 [14] return
|
|
rts
|
|
}
|
|
//SEG29 sum
|
|
/** Adds up two bytes and returns the result
|
|
* a - the first byte
|
|
* b - the second byte
|
|
* Returns the sum pf the two bytes
|
|
*/
|
|
// sum(byte register(A) b)
|
|
sum: {
|
|
//SEG30 [15] (byte) sum::return#1 ← (const byte) a#0 + (byte) sum::b#0 -- vbuaa=vbuc1_plus_vbuaa
|
|
clc
|
|
adc #a
|
|
jmp breturn
|
|
//SEG31 sum::@return
|
|
breturn:
|
|
//SEG32 [16] return
|
|
rts
|
|
}
|
|
|
|
ASSEMBLER OPTIMIZATIONS
|
|
Removing instruction jmp b1
|
|
Removing instruction jmp bend
|
|
Removing instruction jmp b1
|
|
Removing instruction jmp b2
|
|
Removing instruction jmp breturn
|
|
Removing instruction jmp breturn
|
|
Succesful ASM optimization Pass5NextJumpElimination
|
|
Replacing label b1_from_b2 with b1
|
|
Removing instruction b1_from_bbegin:
|
|
Removing instruction b1:
|
|
Removing instruction main_from_b1:
|
|
Removing instruction bend_from_b1:
|
|
Removing instruction b1_from_b2:
|
|
Succesful ASM optimization Pass5RedundantLabelElimination
|
|
Removing instruction bend:
|
|
Removing instruction b1_from_main:
|
|
Removing instruction b2:
|
|
Removing instruction breturn:
|
|
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
|
|
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
|
|
(byte) a
|
|
(const byte) a#0 a = (byte) 'a'
|
|
(void()) main()
|
|
(byte~) main::$0 reg byte a 22.0
|
|
(label) main::@1
|
|
(label) main::@2
|
|
(label) main::@return
|
|
(byte) main::b
|
|
(byte) main::b#1 reg byte x 16.5
|
|
(byte) main::b#2 reg byte x 4.714285714285714
|
|
(byte) main::i
|
|
(byte) main::i#1 reg byte y 7.333333333333333
|
|
(byte) main::i#2 reg byte y 5.5
|
|
(byte()) sum((byte) sum::a , (byte) sum::b)
|
|
(label) sum::@return
|
|
(byte) sum::a
|
|
(byte) sum::b
|
|
(byte) sum::b#0 reg byte a 13.0
|
|
(byte) sum::r
|
|
(byte) sum::return
|
|
(byte) sum::return#0 reg byte a 22.0
|
|
(byte) sum::return#1 reg byte a 4.333333333333333
|
|
|
|
reg byte x [ main::b#2 main::b#1 ]
|
|
reg byte y [ main::i#2 main::i#1 ]
|
|
reg byte a [ sum::b#0 ]
|
|
reg byte a [ sum::return#0 ]
|
|
reg byte a [ main::$0 ]
|
|
reg byte a [ sum::return#1 ]
|
|
|
|
|
|
FINAL ASSEMBLER
|
|
Score: 271
|
|
|
|
//SEG0 File Comments
|
|
/* Tests that block comments are compiled correctly
|
|
* Has a bunch of comments that will be moved into the generated ASM
|
|
*/
|
|
//SEG1 Basic Upstart
|
|
.pc = $801 "Basic"
|
|
:BasicUpstart(main)
|
|
.pc = $80d "Program"
|
|
//SEG2 Global Constants & labels
|
|
// The C64 screen
|
|
.label SCREEN = $400
|
|
// One of the bytes used for addition
|
|
.const a = 'a'
|
|
//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
|
|
/* The program entry point */
|
|
main: {
|
|
//SEG11 [5] phi from main to main::@1 [phi:main->main::@1]
|
|
//SEG12 [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#0] -- vbuyy=vbuc1
|
|
ldy #0
|
|
//SEG13 [5] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#1] -- vbuxx=vbuc1
|
|
ldx #0
|
|
// Do some sums
|
|
//SEG14 [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
|
|
//SEG15 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@2->main::@1#0] -- register_copy
|
|
//SEG16 [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#1] -- register_copy
|
|
//SEG17 main::@1
|
|
b1:
|
|
//SEG18 [6] (byte) sum::b#0 ← (byte) main::b#2 -- vbuaa=vbuxx
|
|
txa
|
|
//SEG19 [7] call sum
|
|
jsr sum
|
|
//SEG20 [8] (byte) sum::return#0 ← (byte) sum::return#1
|
|
//SEG21 main::@2
|
|
//SEG22 [9] (byte~) main::$0 ← (byte) sum::return#0
|
|
//SEG23 [10] *((const byte*) SCREEN#0 + (byte) main::i#2) ← (byte~) main::$0 -- pbuc1_derefidx_vbuyy=vbuaa
|
|
// Output the result on the screen
|
|
sta SCREEN,y
|
|
//SEG24 [11] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuyy=_inc_vbuyy
|
|
iny
|
|
//SEG25 [12] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuxx=_inc_vbuxx
|
|
inx
|
|
//SEG26 [13] if((byte) main::b#1!=(byte) $b) goto main::@1 -- vbuxx_neq_vbuc1_then_la1
|
|
cpx #$b
|
|
bne b1
|
|
//SEG27 main::@return
|
|
//SEG28 [14] return
|
|
rts
|
|
}
|
|
//SEG29 sum
|
|
/** Adds up two bytes and returns the result
|
|
* a - the first byte
|
|
* b - the second byte
|
|
* Returns the sum pf the two bytes
|
|
*/
|
|
// sum(byte register(A) b)
|
|
sum: {
|
|
//SEG30 [15] (byte) sum::return#1 ← (const byte) a#0 + (byte) sum::b#0 -- vbuaa=vbuc1_plus_vbuaa
|
|
clc
|
|
adc #a
|
|
//SEG31 sum::@return
|
|
//SEG32 [16] return
|
|
rts
|
|
}
|
|
|