mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-10-21 17:24:39 +00:00
530 lines
18 KiB
Plaintext
530 lines
18 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::screen#0 ← (byte*)(number) $400
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(byte) main::i#0 ← (byte) 0
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to:main::@1
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main::@1: scope:[main] from main main::@4
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(byte*) main::screen#4 ← phi( main/(byte*) main::screen#0 main::@4/(byte*) main::screen#5 )
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(byte) main::i#2 ← phi( main/(byte) main::i#0 main::@4/(byte) main::i#1 )
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(bool~) main::$0 ← *((const byte*) main::str + (byte) main::i#2) == (number) 0
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(bool~) main::$1 ← ! (bool~) main::$0
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if((bool~) main::$1) goto main::@2
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to:main::@return
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main::@2: scope:[main] from main::@1
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(byte*) main::screen#3 ← phi( main::@1/(byte*) main::screen#4 )
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(byte) main::i#3 ← phi( main::@1/(byte) main::i#2 )
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(bool~) main::$2 ← *((const byte*) main::str + (byte) main::i#3) == (byte) ' '
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(bool~) main::$3 ← ! (bool~) main::$2
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if((bool~) main::$3) goto main::@3
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to:main::@4
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main::@3: scope:[main] from main::@2
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(byte*) main::screen#2 ← phi( main::@2/(byte*) main::screen#3 )
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(byte) main::i#4 ← phi( main::@2/(byte) main::i#3 )
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*((byte*) main::screen#2) ← *((const byte*) main::str + (byte) main::i#4)
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(byte*) main::screen#1 ← ++ (byte*) main::screen#2
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to:main::@4
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main::@4: scope:[main] from main::@2 main::@3
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(byte*) main::screen#5 ← phi( main::@2/(byte*) main::screen#3 main::@3/(byte*) main::screen#1 )
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(byte) main::i#5 ← phi( main::@2/(byte) main::i#3 main::@3/(byte) main::i#4 )
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(byte) main::i#1 ← (byte) main::i#5 + rangenext(0,$ff)
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(bool~) main::$4 ← (byte) main::i#1 != rangelast(0,$ff)
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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::@1 main::@4
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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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(bool~) main::$0
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(bool~) main::$1
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(bool~) 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::@4
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(label) main::@return
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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) main::i#4
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(byte) main::i#5
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(byte*) main::screen
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(byte*) main::screen#0
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(byte*) main::screen#1
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(byte*) main::screen#2
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(byte*) main::screen#3
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(byte*) main::screen#4
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(byte*) main::screen#5
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(const byte*) main::str[] = (byte*) "hello brave new world"
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Adding number conversion cast (unumber) 0 in (bool~) main::$0 ← *((const byte*) main::str + (byte) main::i#2) == (number) 0
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Successful SSA optimization PassNAddNumberTypeConversions
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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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Inversing boolean not [4] (bool~) main::$1 ← *((const byte*) main::str + (byte) main::i#2) != (byte) 0 from [3] (bool~) main::$0 ← *((const byte*) main::str + (byte) main::i#2) == (byte) 0
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Inversing boolean not [8] (bool~) main::$3 ← *((const byte*) main::str + (byte) main::i#3) != (byte) ' ' from [7] (bool~) main::$2 ← *((const byte*) main::str + (byte) main::i#3) == (byte) ' '
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Successful SSA optimization Pass2UnaryNotSimplification
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Alias main::i#2 = main::i#3 main::i#4
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Alias main::screen#2 = main::screen#3 main::screen#4
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Successful SSA optimization Pass2AliasElimination
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Alias main::i#2 = main::i#5
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Successful SSA optimization Pass2AliasElimination
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Simple Condition (bool~) main::$1 [4] if(*((const byte*) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2
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Simple Condition (bool~) main::$3 [6] if(*((const byte*) main::str + (byte) main::i#2)!=(byte) ' ') goto main::@3
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Simple Condition (bool~) main::$4 [12] if((byte) main::i#1!=rangelast(0,$ff)) goto main::@1
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Negating conditional jump and destination [6] if(*((const byte*) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4
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Negating conditional jump and destination [12] if((byte) main::i#1==rangelast(0,$ff)) goto main::@return
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Successful SSA optimization Pass2ConditionalJumpSequenceImprovement
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Constant (const byte*) main::screen#0 = (byte*) 1024
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Constant (const byte) main::i#0 = 0
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Successful SSA optimization Pass2ConstantIdentification
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Resolved ranged next value [10] main::i#1 ← ++ main::i#2 to ++
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Resolved ranged comparison value [12] if(main::i#1==rangelast(0,$ff)) goto main::@return to (number) 0
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Adding number conversion cast (unumber) 0 in if((byte) main::i#1==(number) 0) goto main::@return
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Successful SSA optimization PassNAddNumberTypeConversions
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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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Inlining constant with var siblings (const byte*) main::screen#0
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Inlining constant with var siblings (const byte) main::i#0
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Constant inlined main::screen#0 = (byte*) 1024
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Constant inlined main::i#0 = (byte) 0
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Successful SSA optimization Pass2ConstantInlining
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Added new block during phi lifting main::@5(between main::@4 and main::@1)
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Added new block during phi lifting main::@6(between main::@2 and main::@4)
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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 3 initial phi equivalence classes
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Coalesced [12] main::screen#8 ← main::screen#1
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Coalesced [16] main::i#6 ← main::i#1
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Coalesced [17] main::screen#6 ← main::screen#5
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Coalesced (already) [18] main::screen#7 ← main::screen#2
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Coalesced down to 2 phi equivalence classes
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Culled Empty Block (label) @2
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Culled Empty Block (label) main::@5
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Culled Empty Block (label) main::@6
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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::@4
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[5] (byte*) main::screen#2 ← phi( main/(byte*) 1024 main::@4/(byte*) main::screen#5 )
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[5] (byte) main::i#2 ← phi( main/(byte) 0 main::@4/(byte) main::i#1 )
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[6] if(*((const byte*) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2
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to:main::@return
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main::@return: scope:[main] from main::@1 main::@4
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[7] return
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to:@return
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main::@2: scope:[main] from main::@1
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[8] if(*((const byte*) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4
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to:main::@3
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main::@3: scope:[main] from main::@2
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[9] *((byte*) main::screen#2) ← *((const byte*) main::str + (byte) main::i#2)
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[10] (byte*) main::screen#1 ← ++ (byte*) main::screen#2
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to:main::@4
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main::@4: scope:[main] from main::@2 main::@3
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[11] (byte*) main::screen#5 ← phi( main::@2/(byte*) main::screen#2 main::@3/(byte*) main::screen#1 )
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[12] (byte) main::i#1 ← ++ (byte) main::i#2
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[13] if((byte) main::i#1==(byte) 0) goto main::@return
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to:main::@1
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VARIABLE REGISTER WEIGHTS
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(void()) main()
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(byte) main::i
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(byte) main::i#1 151.5
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(byte) main::i#2 84.16666666666666
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(byte*) main::screen
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(byte*) main::screen#1 202.0
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(byte*) main::screen#2 101.0
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(byte*) main::screen#5 101.0
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Initial phi equivalence classes
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[ main::i#2 main::i#1 ]
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[ main::screen#2 main::screen#5 main::screen#1 ]
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Complete equivalence classes
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[ main::i#2 main::i#1 ]
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[ main::screen#2 main::screen#5 main::screen#1 ]
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Allocated zp[1]:2 [ main::i#2 main::i#1 ]
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Allocated zp[2]:3 [ main::screen#2 main::screen#5 main::screen#1 ]
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INITIAL ASM
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Target platform is c64basic / MOS6502X
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// File Comments
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// Illustrates both break & continue statements in a loop
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// Prints a message ending at NUL skipping all spaces
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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 = 3
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.label i = 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::screen#2 = (byte*) 1024 [phi:main->main::@1#0] -- pbuz1=pbuc1
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lda #<$400
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sta.z screen
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lda #>$400
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sta.z screen+1
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// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#1] -- vbuz1=vbuc1
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lda #0
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sta.z i
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jmp __b1
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// main::@1
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__b1:
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// [6] if(*((const byte*) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuz1_neq_0_then_la1
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ldy.z i
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lda str,y
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cmp #0
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bne __b2
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jmp __breturn
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// main::@return
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__breturn:
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// [7] return
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rts
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// main::@2
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__b2:
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// [8] if(*((const byte*) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 -- pbuc1_derefidx_vbuz1_eq_vbuc2_then_la1
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ldy.z i
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lda str,y
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cmp #' '
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beq __b4_from___b2
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jmp __b3
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// main::@3
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__b3:
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// [9] *((byte*) main::screen#2) ← *((const byte*) main::str + (byte) main::i#2) -- _deref_pbuz1=pbuc1_derefidx_vbuz2
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ldy.z i
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lda str,y
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ldy #0
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sta (screen),y
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// [10] (byte*) main::screen#1 ← ++ (byte*) main::screen#2 -- pbuz1=_inc_pbuz1
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inc.z screen
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bne !+
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inc.z screen+1
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!:
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// [11] phi from main::@2 main::@3 to main::@4 [phi:main::@2/main::@3->main::@4]
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__b4_from___b2:
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__b4_from___b3:
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// [11] phi (byte*) main::screen#5 = (byte*) main::screen#2 [phi:main::@2/main::@3->main::@4#0] -- register_copy
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jmp __b4
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// main::@4
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__b4:
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// [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1
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inc.z i
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// [13] if((byte) main::i#1==(byte) 0) goto main::@return -- vbuz1_eq_0_then_la1
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lda.z i
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cmp #0
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beq __breturn
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// [5] phi from main::@4 to main::@1 [phi:main::@4->main::@1]
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__b1_from___b4:
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// [5] phi (byte*) main::screen#2 = (byte*) main::screen#5 [phi:main::@4->main::@1#0] -- register_copy
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// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@1#1] -- register_copy
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jmp __b1
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str: .text "hello brave new world"
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.byte 0
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}
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// File Data
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [6] if(*((const byte*) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] { } ) always clobbers reg byte a
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Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::i#2 main::i#1 ]
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Statement [8] if(*((const byte*) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] { } ) always clobbers reg byte a
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Statement [9] *((byte*) main::screen#2) ← *((const byte*) main::str + (byte) main::i#2) [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] { } ) always clobbers reg byte a reg byte y
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Removing always clobbered register reg byte y as potential for zp[1]:2 [ main::i#2 main::i#1 ]
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Statement [6] if(*((const byte*) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] { } ) always clobbers reg byte a
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Statement [8] if(*((const byte*) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] { } ) always clobbers reg byte a
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Statement [9] *((byte*) main::screen#2) ← *((const byte*) main::str + (byte) main::i#2) [ main::i#2 main::screen#2 ] ( main:2 [ main::i#2 main::screen#2 ] { } ) always clobbers reg byte a reg byte y
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Potential registers zp[1]:2 [ main::i#2 main::i#1 ] : zp[1]:2 , reg byte x ,
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Potential registers zp[2]:3 [ main::screen#2 main::screen#5 main::screen#1 ] : zp[2]:3 ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [main] 404: zp[2]:3 [ main::screen#2 main::screen#5 main::screen#1 ] 235.67: zp[1]:2 [ main::i#2 main::i#1 ]
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Uplift Scope []
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Uplifting [main] best 783 combination zp[2]:3 [ main::screen#2 main::screen#5 main::screen#1 ] reg byte x [ main::i#2 main::i#1 ]
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Uplifting [] best 783 combination
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Allocated (was zp[2]:3) zp[2]:2 [ main::screen#2 main::screen#5 main::screen#1 ]
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Illustrates both break & continue statements in a loop
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// Prints a message ending at NUL skipping all spaces
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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 = 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::screen#2 = (byte*) 1024 [phi:main->main::@1#0] -- pbuz1=pbuc1
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lda #<$400
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sta.z screen
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lda #>$400
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sta.z screen+1
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// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#1] -- vbuxx=vbuc1
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ldx #0
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jmp __b1
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// main::@1
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__b1:
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// [6] if(*((const byte*) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_neq_0_then_la1
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lda str,x
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cmp #0
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bne __b2
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jmp __breturn
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// main::@return
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__breturn:
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// [7] return
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rts
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// main::@2
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__b2:
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// [8] if(*((const byte*) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 -- pbuc1_derefidx_vbuxx_eq_vbuc2_then_la1
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lda str,x
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cmp #' '
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beq __b4_from___b2
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jmp __b3
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// main::@3
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__b3:
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// [9] *((byte*) main::screen#2) ← *((const byte*) main::str + (byte) main::i#2) -- _deref_pbuz1=pbuc1_derefidx_vbuxx
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lda str,x
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ldy #0
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sta (screen),y
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// [10] (byte*) main::screen#1 ← ++ (byte*) main::screen#2 -- pbuz1=_inc_pbuz1
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inc.z screen
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bne !+
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inc.z screen+1
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!:
|
|
// [11] phi from main::@2 main::@3 to main::@4 [phi:main::@2/main::@3->main::@4]
|
|
__b4_from___b2:
|
|
__b4_from___b3:
|
|
// [11] phi (byte*) main::screen#5 = (byte*) main::screen#2 [phi:main::@2/main::@3->main::@4#0] -- register_copy
|
|
jmp __b4
|
|
// main::@4
|
|
__b4:
|
|
// [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
|
|
inx
|
|
// [13] if((byte) main::i#1==(byte) 0) goto main::@return -- vbuxx_eq_0_then_la1
|
|
cpx #0
|
|
beq __breturn
|
|
// [5] phi from main::@4 to main::@1 [phi:main::@4->main::@1]
|
|
__b1_from___b4:
|
|
// [5] phi (byte*) main::screen#2 = (byte*) main::screen#5 [phi:main::@4->main::@1#0] -- register_copy
|
|
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@1#1] -- register_copy
|
|
jmp __b1
|
|
str: .text "hello brave new world"
|
|
.byte 0
|
|
}
|
|
// File Data
|
|
|
|
ASSEMBLER OPTIMIZATIONS
|
|
Removing instruction jmp __b1
|
|
Removing instruction jmp __bend
|
|
Removing instruction jmp __b1
|
|
Removing instruction jmp __breturn
|
|
Removing instruction jmp __b3
|
|
Removing instruction jmp __b4
|
|
Succesful ASM optimization Pass5NextJumpElimination
|
|
Replacing label __b4_from___b2 with __b4
|
|
Removing instruction __b1_from___bbegin:
|
|
Removing instruction __b1:
|
|
Removing instruction main_from___b1:
|
|
Removing instruction __bend_from___b1:
|
|
Removing instruction __b4_from___b2:
|
|
Removing instruction __b4_from___b3:
|
|
Succesful ASM optimization Pass5RedundantLabelElimination
|
|
Removing instruction __bbegin:
|
|
Removing instruction __bend:
|
|
Removing instruction __b1_from_main:
|
|
Removing instruction __b3:
|
|
Removing instruction __b1_from___b4:
|
|
Succesful ASM optimization Pass5UnusedLabelElimination
|
|
Removing instruction jsr main
|
|
Succesful ASM optimization Pass5SkipBegin
|
|
|
|
FINAL SYMBOL TABLE
|
|
(label) @1
|
|
(label) @begin
|
|
(label) @end
|
|
(void()) main()
|
|
(label) main::@1
|
|
(label) main::@2
|
|
(label) main::@3
|
|
(label) main::@4
|
|
(label) main::@return
|
|
(byte) main::i
|
|
(byte) main::i#1 reg byte x 151.5
|
|
(byte) main::i#2 reg byte x 84.16666666666666
|
|
(byte*) main::screen
|
|
(byte*) main::screen#1 screen zp[2]:2 202.0
|
|
(byte*) main::screen#2 screen zp[2]:2 101.0
|
|
(byte*) main::screen#5 screen zp[2]:2 101.0
|
|
(const byte*) main::str[] = (byte*) "hello brave new world"
|
|
|
|
reg byte x [ main::i#2 main::i#1 ]
|
|
zp[2]:2 [ main::screen#2 main::screen#5 main::screen#1 ]
|
|
|
|
|
|
FINAL ASSEMBLER
|
|
Score: 651
|
|
|
|
// File Comments
|
|
// Illustrates both break & continue statements in a loop
|
|
// Prints a message ending at NUL skipping all spaces
|
|
// Upstart
|
|
.pc = $801 "Basic"
|
|
:BasicUpstart(main)
|
|
.pc = $80d "Program"
|
|
// Global Constants & labels
|
|
// @begin
|
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
|
// @1
|
|
// [2] call main
|
|
// [4] phi from @1 to main [phi:@1->main]
|
|
// [3] phi from @1 to @end [phi:@1->@end]
|
|
// @end
|
|
// main
|
|
main: {
|
|
.label screen = 2
|
|
// [5] phi from main to main::@1 [phi:main->main::@1]
|
|
// [5] phi (byte*) main::screen#2 = (byte*) 1024 [phi:main->main::@1#0] -- pbuz1=pbuc1
|
|
lda #<$400
|
|
sta.z screen
|
|
lda #>$400
|
|
sta.z screen+1
|
|
// [5] phi (byte) main::i#2 = (byte) 0 [phi:main->main::@1#1] -- vbuxx=vbuc1
|
|
ldx #0
|
|
// main::@1
|
|
__b1:
|
|
// if(str[i]==0)
|
|
// [6] if(*((const byte*) main::str + (byte) main::i#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_neq_0_then_la1
|
|
lda str,x
|
|
cmp #0
|
|
bne __b2
|
|
// main::@return
|
|
__breturn:
|
|
// }
|
|
// [7] return
|
|
rts
|
|
// main::@2
|
|
__b2:
|
|
// if(str[i]==' ')
|
|
// [8] if(*((const byte*) main::str + (byte) main::i#2)==(byte) ' ') goto main::@4 -- pbuc1_derefidx_vbuxx_eq_vbuc2_then_la1
|
|
lda str,x
|
|
cmp #' '
|
|
beq __b4
|
|
// main::@3
|
|
// *screen++ = str[i]
|
|
// [9] *((byte*) main::screen#2) ← *((const byte*) main::str + (byte) main::i#2) -- _deref_pbuz1=pbuc1_derefidx_vbuxx
|
|
lda str,x
|
|
ldy #0
|
|
sta (screen),y
|
|
// *screen++ = str[i];
|
|
// [10] (byte*) main::screen#1 ← ++ (byte*) main::screen#2 -- pbuz1=_inc_pbuz1
|
|
inc.z screen
|
|
bne !+
|
|
inc.z screen+1
|
|
!:
|
|
// [11] phi from main::@2 main::@3 to main::@4 [phi:main::@2/main::@3->main::@4]
|
|
// [11] phi (byte*) main::screen#5 = (byte*) main::screen#2 [phi:main::@2/main::@3->main::@4#0] -- register_copy
|
|
// main::@4
|
|
__b4:
|
|
// for( byte i: 0..255)
|
|
// [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
|
|
inx
|
|
// [13] if((byte) main::i#1==(byte) 0) goto main::@return -- vbuxx_eq_0_then_la1
|
|
cpx #0
|
|
beq __breturn
|
|
// [5] phi from main::@4 to main::@1 [phi:main::@4->main::@1]
|
|
// [5] phi (byte*) main::screen#2 = (byte*) main::screen#5 [phi:main::@4->main::@1#0] -- register_copy
|
|
// [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@1#1] -- register_copy
|
|
jmp __b1
|
|
str: .text "hello brave new world"
|
|
.byte 0
|
|
}
|
|
// File Data
|
|
|