mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-10-21 17:24:39 +00:00
625 lines
22 KiB
Plaintext
625 lines
22 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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(byte) main::idx#0 ← (byte) 0
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(byte) main::a#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::idx#3 ← phi( main/(byte) main::idx#0 main::@3/(byte) main::idx#4 )
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(byte) main::a#4 ← phi( main/(byte) main::a#0 main::@3/(byte) main::a#1 )
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(byte) main::b#0 ← (byte) 0
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to:main::@2
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main::@2: scope:[main] from main::@1 main::@2
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(byte) main::idx#2 ← phi( main::@1/(byte) main::idx#3 main::@2/(byte) main::idx#1 )
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(byte) main::b#2 ← phi( main::@1/(byte) main::b#0 main::@2/(byte) main::b#1 )
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(byte) main::a#2 ← phi( main::@1/(byte) main::a#4 main::@2/(byte) main::a#2 )
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(byte) main::c#0 ← (byte) main::a#2
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(byte) main::d#0 ← (byte) main::b#2
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(byte~) main::$0 ← (byte) main::b#2 + (byte) main::c#0
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(byte) main::e#0 ← (byte~) main::$0
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(byte~) main::$1 ← (byte) main::d#0 + (byte) main::a#2
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(byte) main::f#0 ← (byte~) main::$1
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(byte~) main::$2 ← (byte) main::e#0 + (byte) main::f#0
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(byte) main::g#0 ← (byte~) main::$2
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*((const nomodify byte*) main::SCREEN + (byte) main::idx#2) ← (byte) main::g#0
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(byte) main::idx#1 ← ++ (byte) main::idx#2
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(byte) main::b#1 ← (byte) main::b#2 + rangenext(0,5)
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(bool~) main::$3 ← (byte) main::b#1 != rangelast(0,5)
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if((bool~) main::$3) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@2
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(byte) main::idx#4 ← phi( main::@2/(byte) main::idx#1 )
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(byte) main::a#3 ← phi( main::@2/(byte) main::a#2 )
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(byte) main::a#1 ← (byte) main::a#3 + rangenext(0,5)
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(bool~) main::$4 ← (byte) main::a#1 != rangelast(0,5)
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if((bool~) main::$4) 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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@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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(void()) main()
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(byte~) main::$0
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(byte~) main::$1
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(byte~) main::$2
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(bool~) main::$3
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(bool~) main::$4
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(label) main::@1
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(label) main::@2
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(label) main::@3
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(label) main::@return
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(const nomodify byte*) main::SCREEN = (byte*)(number) $400
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(byte) main::a
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(byte) main::a#0
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(byte) main::a#1
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(byte) main::a#2
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(byte) main::a#3
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(byte) main::a#4
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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::c
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(byte) main::c#0
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(byte) main::d
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(byte) main::d#0
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(byte) main::e
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(byte) main::e#0
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(byte) main::f
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(byte) main::f#0
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(byte) main::g
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(byte) main::g#0
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(byte) main::idx
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(byte) main::idx#0
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(byte) main::idx#1
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(byte) main::idx#2
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(byte) main::idx#3
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(byte) main::idx#4
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Simplifying constant pointer cast (byte*) 1024
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Successful SSA optimization PassNCastSimplification
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Alias main::a#2 = main::c#0 main::a#3
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Alias main::d#0 = main::b#2
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Alias main::e#0 = main::$0
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Alias main::f#0 = main::$1
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Alias main::g#0 = main::$2
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Alias main::idx#1 = main::idx#4
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Successful SSA optimization Pass2AliasElimination
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Identical Phi Values (byte) main::a#2 (byte) main::a#4
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Successful SSA optimization Pass2IdenticalPhiElimination
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Simple Condition (bool~) main::$3 [12] if((byte) main::b#1!=rangelast(0,5)) goto main::@2
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Simple Condition (bool~) main::$4 [15] if((byte) main::a#1!=rangelast(0,5)) goto main::@1
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const byte) main::idx#0 = 0
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Constant (const byte) main::a#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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Resolved ranged next value [10] main::b#1 ← ++ main::d#0 to ++
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Resolved ranged comparison value [12] if(main::b#1!=rangelast(0,5)) goto main::@2 to (number) 6
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Resolved ranged next value [13] main::a#1 ← ++ main::a#4 to ++
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Resolved ranged comparison value [15] if(main::a#1!=rangelast(0,5)) goto main::@1 to (number) 6
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Adding number conversion cast (unumber) 6 in if((byte) main::b#1!=(number) 6) goto main::@2
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Adding number conversion cast (unumber) 6 in if((byte) main::a#1!=(number) 6) goto main::@1
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant integer cast 6
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Simplifying constant integer cast 6
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 6
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Finalized unsigned number type (byte) 6
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Inlining constant with var siblings (const byte) main::idx#0
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Inlining constant with var siblings (const byte) main::a#0
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Inlining constant with var siblings (const byte) main::b#0
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Constant inlined main::a#0 = (byte) 0
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Constant inlined main::idx#0 = (byte) 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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Added new block during phi lifting main::@5(between main::@2 and 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 @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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Created 4 initial phi equivalence classes
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Coalesced [7] main::idx#6 ← main::idx#3
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Coalesced [19] main::a#5 ← main::a#1
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Coalesced [20] main::idx#5 ← main::idx#1
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Coalesced [21] main::d#1 ← main::b#1
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Coalesced (already) [22] main::idx#7 ← main::idx#1
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Coalesced down to 3 phi equivalence classes
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Culled Empty Block (label) @2
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Culled Empty Block (label) main::@4
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Culled Empty Block (label) main::@5
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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::@3
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[5] (byte) main::idx#3 ← phi( main/(byte) 0 main::@3/(byte) main::idx#1 )
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[5] (byte) main::a#4 ← phi( main/(byte) 0 main::@3/(byte) main::a#1 )
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to:main::@2
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main::@2: scope:[main] from main::@1 main::@2
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[6] (byte) main::idx#2 ← phi( main::@1/(byte) main::idx#3 main::@2/(byte) main::idx#1 )
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[6] (byte) main::d#0 ← phi( main::@1/(byte) 0 main::@2/(byte) main::b#1 )
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[7] (byte) main::e#0 ← (byte) main::d#0 + (byte) main::a#4
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[8] (byte) main::f#0 ← (byte) main::d#0 + (byte) main::a#4
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[9] (byte) main::g#0 ← (byte) main::e#0 + (byte) main::f#0
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[10] *((const nomodify byte*) main::SCREEN + (byte) main::idx#2) ← (byte) main::g#0
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[11] (byte) main::idx#1 ← ++ (byte) main::idx#2
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[12] (byte) main::b#1 ← ++ (byte) main::d#0
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[13] if((byte) main::b#1!=(byte) 6) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@2
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[14] (byte) main::a#1 ← ++ (byte) main::a#4
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[15] if((byte) main::a#1!=(byte) 6) 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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[16] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(void()) main()
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(byte) main::a
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(byte) main::a#1 151.5
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(byte) main::a#4 244.8888888888889
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(byte) main::b
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(byte) main::b#1 1501.5
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(byte) main::c
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(byte) main::d
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(byte) main::d#0 667.3333333333334
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(byte) main::e
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(byte) main::e#0 1001.0
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(byte) main::f
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(byte) main::f#0 2002.0
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(byte) main::g
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(byte) main::g#0 2002.0
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(byte) main::idx
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(byte) main::idx#1 420.59999999999997
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(byte) main::idx#2 620.8
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(byte) main::idx#3 202.0
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Initial phi equivalence classes
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[ main::a#4 main::a#1 ]
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[ main::d#0 main::b#1 ]
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[ main::idx#2 main::idx#3 main::idx#1 ]
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Added variable main::e#0 to live range equivalence class [ main::e#0 ]
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Added variable main::f#0 to live range equivalence class [ main::f#0 ]
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Added variable main::g#0 to live range equivalence class [ main::g#0 ]
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Complete equivalence classes
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[ main::a#4 main::a#1 ]
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[ main::d#0 main::b#1 ]
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[ main::idx#2 main::idx#3 main::idx#1 ]
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[ main::e#0 ]
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[ main::f#0 ]
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[ main::g#0 ]
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Allocated zp[1]:2 [ main::a#4 main::a#1 ]
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Allocated zp[1]:3 [ main::d#0 main::b#1 ]
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Allocated zp[1]:4 [ main::idx#2 main::idx#3 main::idx#1 ]
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Allocated zp[1]:5 [ main::e#0 ]
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Allocated zp[1]:6 [ main::f#0 ]
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Allocated zp[1]:7 [ main::g#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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// Tests variable coalescing over assignments
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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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// @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 SCREEN = $400
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.label d = 3
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.label e = 5
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.label f = 6
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.label g = 7
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.label idx = 4
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.label b = 3
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.label a = 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 (byte) main::idx#3 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
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lda #0
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sta.z idx
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// [5] phi (byte) main::a#4 = (byte) 0 [phi:main->main::@1#1] -- vbuz1=vbuc1
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lda #0
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sta.z a
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jmp __b1
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// [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
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__b1_from___b3:
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// [5] phi (byte) main::idx#3 = (byte) main::idx#1 [phi:main::@3->main::@1#0] -- register_copy
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// [5] phi (byte) main::a#4 = (byte) main::a#1 [phi:main::@3->main::@1#1] -- register_copy
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jmp __b1
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// main::@1
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__b1:
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// [6] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
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__b2_from___b1:
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// [6] phi (byte) main::idx#2 = (byte) main::idx#3 [phi:main::@1->main::@2#0] -- register_copy
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// [6] phi (byte) main::d#0 = (byte) 0 [phi:main::@1->main::@2#1] -- vbuz1=vbuc1
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lda #0
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sta.z d
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jmp __b2
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// [6] phi from main::@2 to main::@2 [phi:main::@2->main::@2]
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__b2_from___b2:
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// [6] phi (byte) main::idx#2 = (byte) main::idx#1 [phi:main::@2->main::@2#0] -- register_copy
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// [6] phi (byte) main::d#0 = (byte) main::b#1 [phi:main::@2->main::@2#1] -- register_copy
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jmp __b2
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// main::@2
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__b2:
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// [7] (byte) main::e#0 ← (byte) main::d#0 + (byte) main::a#4 -- vbuz1=vbuz2_plus_vbuz3
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lda.z d
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clc
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adc.z a
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sta.z e
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// [8] (byte) main::f#0 ← (byte) main::d#0 + (byte) main::a#4 -- vbuz1=vbuz2_plus_vbuz3
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lda.z d
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clc
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adc.z a
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sta.z f
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// [9] (byte) main::g#0 ← (byte) main::e#0 + (byte) main::f#0 -- vbuz1=vbuz2_plus_vbuz3
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lda.z e
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clc
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adc.z f
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sta.z g
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// [10] *((const nomodify byte*) main::SCREEN + (byte) main::idx#2) ← (byte) main::g#0 -- pbuc1_derefidx_vbuz1=vbuz2
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lda.z g
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ldy.z idx
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sta SCREEN,y
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// [11] (byte) main::idx#1 ← ++ (byte) main::idx#2 -- vbuz1=_inc_vbuz1
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inc.z idx
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// [12] (byte) main::b#1 ← ++ (byte) main::d#0 -- vbuz1=_inc_vbuz1
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inc.z b
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// [13] if((byte) main::b#1!=(byte) 6) goto main::@2 -- vbuz1_neq_vbuc1_then_la1
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lda #6
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cmp.z b
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bne __b2_from___b2
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jmp __b3
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// main::@3
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__b3:
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// [14] (byte) main::a#1 ← ++ (byte) main::a#4 -- vbuz1=_inc_vbuz1
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inc.z a
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// [15] if((byte) main::a#1!=(byte) 6) goto main::@1 -- vbuz1_neq_vbuc1_then_la1
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lda #6
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cmp.z a
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bne __b1_from___b3
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jmp __breturn
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// main::@return
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__breturn:
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// [16] 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 [7] (byte) main::e#0 ← (byte) main::d#0 + (byte) main::a#4 [ main::a#4 main::d#0 main::idx#2 main::e#0 ] ( main:2 [ main::a#4 main::d#0 main::idx#2 main::e#0 ] { } ) always clobbers reg byte a
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Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::a#4 main::a#1 ]
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Removing always clobbered register reg byte a as potential for zp[1]:3 [ main::d#0 main::b#1 ]
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Removing always clobbered register reg byte a as potential for zp[1]:4 [ main::idx#2 main::idx#3 main::idx#1 ]
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Statement [8] (byte) main::f#0 ← (byte) main::d#0 + (byte) main::a#4 [ main::a#4 main::d#0 main::idx#2 main::e#0 main::f#0 ] ( main:2 [ main::a#4 main::d#0 main::idx#2 main::e#0 main::f#0 ] { } ) always clobbers reg byte a
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Removing always clobbered register reg byte a as potential for zp[1]:5 [ main::e#0 ]
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Statement [9] (byte) main::g#0 ← (byte) main::e#0 + (byte) main::f#0 [ main::a#4 main::d#0 main::idx#2 main::g#0 ] ( main:2 [ main::a#4 main::d#0 main::idx#2 main::g#0 ] { } ) always clobbers reg byte a
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Statement [7] (byte) main::e#0 ← (byte) main::d#0 + (byte) main::a#4 [ main::a#4 main::d#0 main::idx#2 main::e#0 ] ( main:2 [ main::a#4 main::d#0 main::idx#2 main::e#0 ] { } ) always clobbers reg byte a
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Statement [8] (byte) main::f#0 ← (byte) main::d#0 + (byte) main::a#4 [ main::a#4 main::d#0 main::idx#2 main::e#0 main::f#0 ] ( main:2 [ main::a#4 main::d#0 main::idx#2 main::e#0 main::f#0 ] { } ) always clobbers reg byte a
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Statement [9] (byte) main::g#0 ← (byte) main::e#0 + (byte) main::f#0 [ main::a#4 main::d#0 main::idx#2 main::g#0 ] ( main:2 [ main::a#4 main::d#0 main::idx#2 main::g#0 ] { } ) always clobbers reg byte a
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Potential registers zp[1]:2 [ main::a#4 main::a#1 ] : zp[1]:2 , reg byte x , reg byte y ,
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Potential registers zp[1]:3 [ main::d#0 main::b#1 ] : zp[1]:3 , reg byte x , reg byte y ,
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Potential registers zp[1]:4 [ main::idx#2 main::idx#3 main::idx#1 ] : zp[1]:4 , reg byte x , reg byte y ,
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Potential registers zp[1]:5 [ main::e#0 ] : zp[1]:5 , reg byte x , reg byte y ,
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Potential registers zp[1]:6 [ main::f#0 ] : zp[1]:6 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:7 [ main::g#0 ] : zp[1]:7 , reg byte a , reg byte x , reg byte y ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [main] 2,168.83: zp[1]:3 [ main::d#0 main::b#1 ] 2,002: zp[1]:6 [ main::f#0 ] 2,002: zp[1]:7 [ main::g#0 ] 1,243.4: zp[1]:4 [ main::idx#2 main::idx#3 main::idx#1 ] 1,001: zp[1]:5 [ main::e#0 ] 396.39: zp[1]:2 [ main::a#4 main::a#1 ]
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Uplift Scope []
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Uplifting [main] best 4953 combination reg byte y [ main::d#0 main::b#1 ] reg byte a [ main::f#0 ] reg byte a [ main::g#0 ] reg byte x [ main::idx#2 main::idx#3 main::idx#1 ] zp[1]:5 [ main::e#0 ] zp[1]:2 [ main::a#4 main::a#1 ]
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Limited combination testing to 100 combinations of 1296 possible.
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Uplifting [] best 4953 combination
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Attempting to uplift remaining variables inzp[1]:5 [ main::e#0 ]
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Uplifting [main] best 4953 combination zp[1]:5 [ main::e#0 ]
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Attempting to uplift remaining variables inzp[1]:2 [ main::a#4 main::a#1 ]
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Uplifting [main] best 4953 combination zp[1]:2 [ main::a#4 main::a#1 ]
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Allocated (was zp[1]:5) zp[1]:3 [ main::e#0 ]
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Tests variable coalescing over assignments
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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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// @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 SCREEN = $400
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.label e = 3
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.label a = 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 (byte) main::idx#3 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
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ldx #0
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// [5] phi (byte) main::a#4 = (byte) 0 [phi:main->main::@1#1] -- vbuz1=vbuc1
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lda #0
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sta.z a
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jmp __b1
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// [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
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__b1_from___b3:
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// [5] phi (byte) main::idx#3 = (byte) main::idx#1 [phi:main::@3->main::@1#0] -- register_copy
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// [5] phi (byte) main::a#4 = (byte) main::a#1 [phi:main::@3->main::@1#1] -- register_copy
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jmp __b1
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// main::@1
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__b1:
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// [6] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
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__b2_from___b1:
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// [6] phi (byte) main::idx#2 = (byte) main::idx#3 [phi:main::@1->main::@2#0] -- register_copy
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// [6] phi (byte) main::d#0 = (byte) 0 [phi:main::@1->main::@2#1] -- vbuyy=vbuc1
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ldy #0
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jmp __b2
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// [6] phi from main::@2 to main::@2 [phi:main::@2->main::@2]
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__b2_from___b2:
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// [6] phi (byte) main::idx#2 = (byte) main::idx#1 [phi:main::@2->main::@2#0] -- register_copy
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// [6] phi (byte) main::d#0 = (byte) main::b#1 [phi:main::@2->main::@2#1] -- register_copy
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jmp __b2
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// main::@2
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__b2:
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// [7] (byte) main::e#0 ← (byte) main::d#0 + (byte) main::a#4 -- vbuz1=vbuyy_plus_vbuz2
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tya
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clc
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adc.z a
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sta.z e
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// [8] (byte) main::f#0 ← (byte) main::d#0 + (byte) main::a#4 -- vbuaa=vbuyy_plus_vbuz1
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tya
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clc
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adc.z a
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// [9] (byte) main::g#0 ← (byte) main::e#0 + (byte) main::f#0 -- vbuaa=vbuz1_plus_vbuaa
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clc
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adc.z e
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// [10] *((const nomodify byte*) main::SCREEN + (byte) main::idx#2) ← (byte) main::g#0 -- pbuc1_derefidx_vbuxx=vbuaa
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sta SCREEN,x
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// [11] (byte) main::idx#1 ← ++ (byte) main::idx#2 -- vbuxx=_inc_vbuxx
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inx
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// [12] (byte) main::b#1 ← ++ (byte) main::d#0 -- vbuyy=_inc_vbuyy
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iny
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// [13] if((byte) main::b#1!=(byte) 6) goto main::@2 -- vbuyy_neq_vbuc1_then_la1
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cpy #6
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bne __b2_from___b2
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jmp __b3
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// main::@3
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__b3:
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// [14] (byte) main::a#1 ← ++ (byte) main::a#4 -- vbuz1=_inc_vbuz1
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inc.z a
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// [15] if((byte) main::a#1!=(byte) 6) goto main::@1 -- vbuz1_neq_vbuc1_then_la1
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lda #6
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cmp.z a
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bne __b1_from___b3
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jmp __breturn
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// main::@return
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__breturn:
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// [16] 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 __b3
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Removing instruction jmp __breturn
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Succesful ASM optimization Pass5NextJumpElimination
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Replacing instruction lda #0 with TXA
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Replacing label __b2_from___b2 with __b2
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Replacing label __b1_from___b3 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___b3:
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Removing instruction __b2_from___b1:
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Removing instruction __b2_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 __b3:
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Removing instruction __breturn:
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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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Removing instruction jmp __b2
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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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(void()) main()
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(label) main::@1
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(label) main::@2
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(label) main::@3
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(label) main::@return
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(const nomodify byte*) main::SCREEN = (byte*) 1024
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(byte) main::a
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(byte) main::a#1 a zp[1]:2 151.5
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(byte) main::a#4 a zp[1]:2 244.8888888888889
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(byte) main::b
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(byte) main::b#1 reg byte y 1501.5
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(byte) main::c
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(byte) main::d
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(byte) main::d#0 reg byte y 667.3333333333334
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(byte) main::e
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(byte) main::e#0 e zp[1]:3 1001.0
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(byte) main::f
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(byte) main::f#0 reg byte a 2002.0
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(byte) main::g
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(byte) main::g#0 reg byte a 2002.0
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(byte) main::idx
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(byte) main::idx#1 reg byte x 420.59999999999997
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(byte) main::idx#2 reg byte x 620.8
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(byte) main::idx#3 reg byte x 202.0
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zp[1]:2 [ main::a#4 main::a#1 ]
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reg byte y [ main::d#0 main::b#1 ]
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reg byte x [ main::idx#2 main::idx#3 main::idx#1 ]
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zp[1]:3 [ main::e#0 ]
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reg byte a [ main::f#0 ]
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reg byte a [ main::g#0 ]
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FINAL ASSEMBLER
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Score: 3951
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// File Comments
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// Tests variable coalescing over assignments
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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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// @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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.label SCREEN = $400
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.label e = 3
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.label a = 2
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// [5] phi from main to main::@1 [phi:main->main::@1]
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// [5] phi (byte) main::idx#3 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
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ldx #0
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// [5] phi (byte) main::a#4 = (byte) 0 [phi:main->main::@1#1] -- vbuz1=vbuc1
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txa
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sta.z a
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// [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
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// [5] phi (byte) main::idx#3 = (byte) main::idx#1 [phi:main::@3->main::@1#0] -- register_copy
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// [5] phi (byte) main::a#4 = (byte) main::a#1 [phi:main::@3->main::@1#1] -- register_copy
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// main::@1
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__b1:
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// [6] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
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// [6] phi (byte) main::idx#2 = (byte) main::idx#3 [phi:main::@1->main::@2#0] -- register_copy
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// [6] phi (byte) main::d#0 = (byte) 0 [phi:main::@1->main::@2#1] -- vbuyy=vbuc1
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ldy #0
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// [6] phi from main::@2 to main::@2 [phi:main::@2->main::@2]
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// [6] phi (byte) main::idx#2 = (byte) main::idx#1 [phi:main::@2->main::@2#0] -- register_copy
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// [6] phi (byte) main::d#0 = (byte) main::b#1 [phi:main::@2->main::@2#1] -- register_copy
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// main::@2
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__b2:
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// e = b+c
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// [7] (byte) main::e#0 ← (byte) main::d#0 + (byte) main::a#4 -- vbuz1=vbuyy_plus_vbuz2
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tya
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clc
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adc.z a
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sta.z e
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// f = d+a
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// [8] (byte) main::f#0 ← (byte) main::d#0 + (byte) main::a#4 -- vbuaa=vbuyy_plus_vbuz1
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tya
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clc
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adc.z a
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// g = e+f
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// [9] (byte) main::g#0 ← (byte) main::e#0 + (byte) main::f#0 -- vbuaa=vbuz1_plus_vbuaa
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clc
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adc.z e
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// SCREEN[idx++] = g
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// [10] *((const nomodify byte*) main::SCREEN + (byte) main::idx#2) ← (byte) main::g#0 -- pbuc1_derefidx_vbuxx=vbuaa
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sta SCREEN,x
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// SCREEN[idx++] = g;
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// [11] (byte) main::idx#1 ← ++ (byte) main::idx#2 -- vbuxx=_inc_vbuxx
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inx
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// for( byte b: 0..5)
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// [12] (byte) main::b#1 ← ++ (byte) main::d#0 -- vbuyy=_inc_vbuyy
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iny
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// [13] if((byte) main::b#1!=(byte) 6) goto main::@2 -- vbuyy_neq_vbuc1_then_la1
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cpy #6
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bne __b2
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// main::@3
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// for( byte a: 0..5)
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// [14] (byte) main::a#1 ← ++ (byte) main::a#4 -- vbuz1=_inc_vbuz1
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inc.z a
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// [15] if((byte) main::a#1!=(byte) 6) goto main::@1 -- vbuz1_neq_vbuc1_then_la1
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lda #6
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cmp.z a
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bne __b1
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// main::@return
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// }
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// [16] return
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rts
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}
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// File Data
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