mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-09-30 09:57:11 +00:00
660 lines
22 KiB
Plaintext
660 lines
22 KiB
Plaintext
Culled Empty Block (label) malloc::@1
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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(byte*) SCREEN ← ((byte*)) (number) $400
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to:@1
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(void()) main()
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main: scope:[main] from @2
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(byte*) heap_head#13 ← phi( @2/(byte*) heap_head#14 )
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call malloc
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(void*) malloc::return#0 ← (void*) malloc::return#3
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to:main::@1
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main::@1: scope:[main] from main
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(byte*) heap_head#7 ← phi( main/(byte*) heap_head#5 )
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(void*) malloc::return#4 ← phi( main/(void*) malloc::return#0 )
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(void*~) main::$0 ← (void*) malloc::return#4
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(byte*) heap_head#0 ← (byte*) heap_head#7
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(byte*) main::buf1#0 ← ((byte*)) (void*~) main::$0
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call malloc
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(void*) malloc::return#1 ← (void*) malloc::return#3
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to:main::@2
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main::@2: scope:[main] from main::@1
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(byte*) main::buf1#1 ← phi( main::@1/(byte*) main::buf1#0 )
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(byte*) heap_head#8 ← phi( main::@1/(byte*) heap_head#5 )
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(void*) malloc::return#5 ← phi( main::@1/(void*) malloc::return#1 )
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(void*~) main::$1 ← (void*) malloc::return#5
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(byte*) heap_head#1 ← (byte*) heap_head#8
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(byte*) main::buf2#0 ← ((byte*)) (void*~) main::$1
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*((byte*) main::buf1#1) ← (byte) 'a'
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*((byte*) main::buf2#0) ← (byte) 'b'
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*((byte*) SCREEN + (number) 0) ← *((byte*) main::buf1#1)
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*((byte*) SCREEN + (number) 1) ← *((byte*) main::buf2#0)
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to:main::@return
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main::@return: scope:[main] from main::@2
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(byte*) heap_head#9 ← phi( main::@2/(byte*) heap_head#1 )
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(byte*) heap_head#2 ← (byte*) heap_head#9
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return
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to:@return
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@1: scope:[] from @begin
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(byte*) heap_head#3 ← ((byte*)) (number) $c000
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to:@2
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(void*()) malloc()
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malloc: scope:[malloc] from main main::@1
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(byte*) heap_head#10 ← phi( main/(byte*) heap_head#13 main::@1/(byte*) heap_head#0 )
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(byte*) heap_head#4 ← ++ (byte*) heap_head#10
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(void*) malloc::return#2 ← ((void*)) (byte*) heap_head#4
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to:malloc::@return
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malloc::@return: scope:[malloc] from malloc
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(byte*) heap_head#11 ← phi( malloc/(byte*) heap_head#4 )
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(void*) malloc::return#6 ← phi( malloc/(void*) malloc::return#2 )
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(void*) malloc::return#3 ← (void*) malloc::return#6
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(byte*) heap_head#5 ← (byte*) heap_head#11
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return
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to:@return
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@2: scope:[] from @1
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(byte*) heap_head#14 ← phi( @1/(byte*) heap_head#3 )
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call main
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to:@3
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@3: scope:[] from @2
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(byte*) heap_head#12 ← phi( @2/(byte*) heap_head#2 )
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(byte*) heap_head#6 ← (byte*) heap_head#12
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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) @1
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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*) heap_head
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(byte*) heap_head#0
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(byte*) heap_head#1
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(byte*) heap_head#10
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(byte*) heap_head#11
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(byte*) heap_head#12
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(byte*) heap_head#13
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(byte*) heap_head#14
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(byte*) heap_head#2
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(byte*) heap_head#3
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(byte*) heap_head#4
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(byte*) heap_head#5
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(byte*) heap_head#6
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(byte*) heap_head#7
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(byte*) heap_head#8
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(byte*) heap_head#9
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(void()) main()
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(void*~) main::$0
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(void*~) main::$1
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(label) main::@1
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(label) main::@2
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(label) main::@return
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(byte*) main::buf1
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(byte*) main::buf1#0
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(byte*) main::buf1#1
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(byte*) main::buf2
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(byte*) main::buf2#0
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(void*()) malloc()
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(label) malloc::@return
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(void*) malloc::return
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(void*) malloc::return#0
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(void*) malloc::return#1
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(void*) malloc::return#2
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(void*) malloc::return#3
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(void*) malloc::return#4
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(void*) malloc::return#5
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(void*) malloc::return#6
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Adding number conversion cast (unumber) 0 in *((byte*) SCREEN + (number) 0) ← *((byte*) main::buf1#1)
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Adding number conversion cast (unumber) 1 in *((byte*) SCREEN + (number) 1) ← *((byte*) main::buf2#0)
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast (byte*) SCREEN ← (byte*)(number) $400
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Inlining cast (byte*) main::buf1#0 ← (byte*)(void*~) main::$0
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Inlining cast (byte*) main::buf2#0 ← (byte*)(void*~) main::$1
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Inlining cast (byte*) heap_head#3 ← (byte*)(number) $c000
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Inlining cast (void*) malloc::return#2 ← (void*)(byte*) heap_head#4
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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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Simplifying constant integer cast 1
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Simplifying constant pointer cast (byte*) 49152
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 0
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Finalized unsigned number type (byte) 1
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias (void*) malloc::return#0 = (void*) malloc::return#4
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Alias (byte*) heap_head#0 = (byte*) heap_head#7
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Alias (void*) malloc::return#1 = (void*) malloc::return#5
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Alias (byte*) main::buf1#0 = (byte*) main::buf1#1
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Alias (byte*) heap_head#1 = (byte*) heap_head#8 (byte*) heap_head#9 (byte*) heap_head#2
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Alias (void*) malloc::return#2 = (void*) malloc::return#6 (void*) malloc::return#3
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Alias (byte*) heap_head#11 = (byte*) heap_head#4 (byte*) heap_head#5
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Alias (byte*) heap_head#14 = (byte*) heap_head#3
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Alias (byte*) heap_head#12 = (byte*) heap_head#6
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Successful SSA optimization Pass2AliasElimination
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Identical Phi Values (byte*) heap_head#13 (byte*) heap_head#14
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Identical Phi Values (byte*) heap_head#0 (byte*) heap_head#11
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Identical Phi Values (byte*) heap_head#1 (byte*) heap_head#11
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Identical Phi Values (byte*) heap_head#12 (byte*) heap_head#1
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Successful SSA optimization Pass2IdenticalPhiElimination
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Constant (const byte*) SCREEN = (byte*) 1024
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Constant (const byte*) heap_head#14 = (byte*) 49152
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Successful SSA optimization Pass2ConstantIdentification
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Simplifying expression containing zero SCREEN in [16] *((const byte*) SCREEN + (byte) 0) ← *((byte*) main::buf1#0)
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Successful SSA optimization PassNSimplifyExpressionWithZero
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Inlining Noop Cast [3] (byte*) main::buf1#0 ← (byte*)(void*~) main::$0 keeping main::buf1#0
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Inlining Noop Cast [7] (byte*) main::buf2#0 ← (byte*)(void*~) main::$1 keeping main::buf2#0
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Successful SSA optimization Pass2NopCastInlining
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Inlining constant with var siblings (const byte*) heap_head#14
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Constant inlined heap_head#14 = (byte*) 49152
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Successful SSA optimization Pass2ConstantInlining
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Consolidated array index constant in *(SCREEN+1)
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Successful SSA optimization Pass2ConstantAdditionElimination
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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 @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:3
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Calls in [main] to malloc:7 malloc:11
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Created 1 initial phi equivalence classes
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Coalesced [10] heap_head#15 ← heap_head#11
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Coalesced down to 1 phi equivalence classes
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Culled Empty Block (label) @1
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Culled Empty Block (label) @3
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Renumbering block @2 to @1
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @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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[5] call malloc
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[6] (void*) malloc::return#0 ← (void*) malloc::return#2
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to:main::@1
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main::@1: scope:[main] from main
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[7] (void*) main::buf1#0 ← (void*) malloc::return#0
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[8] call malloc
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[9] (void*) malloc::return#1 ← (void*) malloc::return#2
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to:main::@2
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main::@2: scope:[main] from main::@1
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[10] (void*) main::buf2#0 ← (void*) malloc::return#1
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[11] *((byte*)(void*) main::buf1#0) ← (byte) 'a'
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[12] *((byte*)(void*) main::buf2#0) ← (byte) 'b'
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[13] *((const byte*) SCREEN) ← *((byte*)(void*) main::buf1#0)
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[14] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(void*) main::buf2#0)
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to:main::@return
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main::@return: scope:[main] from main::@2
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[15] return
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to:@return
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(void*()) malloc()
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malloc: scope:[malloc] from main main::@1
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[16] (byte*) heap_head#10 ← phi( main/(byte*) 49152 main::@1/(byte*) heap_head#11 )
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[17] (byte*) heap_head#11 ← ++ (byte*) heap_head#10
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[18] (void*) malloc::return#2 ← (void*)(byte*) heap_head#11
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to:malloc::@return
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malloc::@return: scope:[malloc] from malloc
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[19] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(byte*) heap_head
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(byte*) heap_head#10 4.0
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(byte*) heap_head#11 0.6666666666666666
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(void()) main()
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(byte*) main::buf1
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(void*) main::buf1#0 0.3333333333333333
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(byte*) main::buf2
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(void*) main::buf2#0 0.5
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(void*()) malloc()
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(void*) malloc::return
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(void*) malloc::return#0 4.0
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(void*) malloc::return#1 4.0
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(void*) malloc::return#2 1.5
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Initial phi equivalence classes
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[ heap_head#10 heap_head#11 ]
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Added variable malloc::return#0 to zero page equivalence class [ malloc::return#0 ]
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Added variable main::buf1#0 to zero page equivalence class [ main::buf1#0 ]
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Added variable malloc::return#1 to zero page equivalence class [ malloc::return#1 ]
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Added variable main::buf2#0 to zero page equivalence class [ main::buf2#0 ]
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Added variable malloc::return#2 to zero page equivalence class [ malloc::return#2 ]
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Complete equivalence classes
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[ heap_head#10 heap_head#11 ]
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[ malloc::return#0 ]
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[ main::buf1#0 ]
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[ malloc::return#1 ]
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[ main::buf2#0 ]
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[ malloc::return#2 ]
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Allocated zp ZP_WORD:2 [ heap_head#10 heap_head#11 ]
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Allocated zp ZP_WORD:4 [ malloc::return#0 ]
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Allocated zp ZP_WORD:6 [ main::buf1#0 ]
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Allocated zp ZP_WORD:8 [ malloc::return#1 ]
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Allocated zp ZP_WORD:10 [ main::buf2#0 ]
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Allocated zp ZP_WORD:12 [ malloc::return#2 ]
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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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// Test void pointer - issues when assigning returns from malloc()
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// 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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// Global Constants & labels
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.label SCREEN = $400
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.label heap_head = 2
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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 buf1 = 6
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.label buf2 = $a
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// [5] call malloc
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// [16] phi from main to malloc [phi:main->malloc]
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malloc_from_main:
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// [16] phi (byte*) heap_head#10 = (byte*) 49152 [phi:main->malloc#0] -- pbuz1=pbuc1
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lda #<$c000
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sta.z heap_head
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lda #>$c000
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sta.z heap_head+1
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jsr malloc
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// [6] (void*) malloc::return#0 ← (void*) malloc::return#2 -- pvoz1=pvoz2
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lda.z malloc.return_2
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sta.z malloc.return
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lda.z malloc.return_2+1
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sta.z malloc.return+1
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jmp b1
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// main::@1
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b1:
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// [7] (void*) main::buf1#0 ← (void*) malloc::return#0 -- pvoz1=pvoz2
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lda.z malloc.return
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sta.z buf1
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lda.z malloc.return+1
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sta.z buf1+1
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// [8] call malloc
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// [16] phi from main::@1 to malloc [phi:main::@1->malloc]
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malloc_from_b1:
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// [16] phi (byte*) heap_head#10 = (byte*) heap_head#11 [phi:main::@1->malloc#0] -- register_copy
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jsr malloc
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// [9] (void*) malloc::return#1 ← (void*) malloc::return#2 -- pvoz1=pvoz2
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lda.z malloc.return_2
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sta.z malloc.return_1
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lda.z malloc.return_2+1
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sta.z malloc.return_1+1
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jmp b2
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// main::@2
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b2:
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// [10] (void*) main::buf2#0 ← (void*) malloc::return#1 -- pvoz1=pvoz2
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lda.z malloc.return_1
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sta.z buf2
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lda.z malloc.return_1+1
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sta.z buf2+1
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// [11] *((byte*)(void*) main::buf1#0) ← (byte) 'a' -- _deref_pbuz1=vbuc1
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lda #'a'
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ldy #0
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sta (buf1),y
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// [12] *((byte*)(void*) main::buf2#0) ← (byte) 'b' -- _deref_pbuz1=vbuc1
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lda #'b'
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ldy #0
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sta (buf2),y
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// [13] *((const byte*) SCREEN) ← *((byte*)(void*) main::buf1#0) -- _deref_pbuc1=_deref_pbuz1
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ldy #0
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lda (buf1),y
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sta SCREEN
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// [14] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(void*) main::buf2#0) -- _deref_pbuc1=_deref_pbuz1
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ldy #0
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lda (buf2),y
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sta SCREEN+1
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jmp breturn
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// main::@return
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breturn:
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// [15] return
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rts
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}
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// malloc
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malloc: {
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.label return = 4
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.label return_1 = 8
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.label return_2 = $c
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// [17] (byte*) heap_head#11 ← ++ (byte*) heap_head#10 -- pbuz1=_inc_pbuz1
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inc.z heap_head
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bne !+
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inc.z heap_head+1
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!:
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// [18] (void*) malloc::return#2 ← (void*)(byte*) heap_head#11 -- pvoz1=pvoz2
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lda.z heap_head
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sta.z return_2
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lda.z heap_head+1
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sta.z return_2+1
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jmp breturn
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// malloc::@return
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breturn:
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// [19] 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 [6] (void*) malloc::return#0 ← (void*) malloc::return#2 [ malloc::return#0 heap_head#11 ] ( main:2 [ malloc::return#0 heap_head#11 ] ) always clobbers reg byte a
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Statement [7] (void*) main::buf1#0 ← (void*) malloc::return#0 [ main::buf1#0 heap_head#11 ] ( main:2 [ main::buf1#0 heap_head#11 ] ) always clobbers reg byte a
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Statement [9] (void*) malloc::return#1 ← (void*) malloc::return#2 [ main::buf1#0 malloc::return#1 ] ( main:2 [ main::buf1#0 malloc::return#1 ] ) always clobbers reg byte a
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Statement [10] (void*) main::buf2#0 ← (void*) malloc::return#1 [ main::buf1#0 main::buf2#0 ] ( main:2 [ main::buf1#0 main::buf2#0 ] ) always clobbers reg byte a
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Statement [11] *((byte*)(void*) main::buf1#0) ← (byte) 'a' [ main::buf1#0 main::buf2#0 ] ( main:2 [ main::buf1#0 main::buf2#0 ] ) always clobbers reg byte a reg byte y
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Statement [12] *((byte*)(void*) main::buf2#0) ← (byte) 'b' [ main::buf1#0 main::buf2#0 ] ( main:2 [ main::buf1#0 main::buf2#0 ] ) always clobbers reg byte a reg byte y
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Statement [13] *((const byte*) SCREEN) ← *((byte*)(void*) main::buf1#0) [ main::buf2#0 ] ( main:2 [ main::buf2#0 ] ) always clobbers reg byte a reg byte y
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Statement [14] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(void*) main::buf2#0) [ ] ( main:2 [ ] ) always clobbers reg byte a reg byte y
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Statement [18] (void*) malloc::return#2 ← (void*)(byte*) heap_head#11 [ malloc::return#2 heap_head#11 ] ( main:2::malloc:5 [ malloc::return#2 heap_head#11 ] main:2::malloc:8 [ main::buf1#0 malloc::return#2 heap_head#11 ] ) always clobbers reg byte a
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Potential registers zp ZP_WORD:2 [ heap_head#10 heap_head#11 ] : zp ZP_WORD:2 ,
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Potential registers zp ZP_WORD:4 [ malloc::return#0 ] : zp ZP_WORD:4 ,
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Potential registers zp ZP_WORD:6 [ main::buf1#0 ] : zp ZP_WORD:6 ,
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Potential registers zp ZP_WORD:8 [ malloc::return#1 ] : zp ZP_WORD:8 ,
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Potential registers zp ZP_WORD:10 [ main::buf2#0 ] : zp ZP_WORD:10 ,
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Potential registers zp ZP_WORD:12 [ malloc::return#2 ] : zp ZP_WORD:12 ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [malloc] 4: zp ZP_WORD:4 [ malloc::return#0 ] 4: zp ZP_WORD:8 [ malloc::return#1 ] 1.5: zp ZP_WORD:12 [ malloc::return#2 ]
|
|
Uplift Scope [] 4.67: zp ZP_WORD:2 [ heap_head#10 heap_head#11 ]
|
|
Uplift Scope [main] 0.5: zp ZP_WORD:10 [ main::buf2#0 ] 0.33: zp ZP_WORD:6 [ main::buf1#0 ]
|
|
|
|
Uplifting [malloc] best 172 combination zp ZP_WORD:4 [ malloc::return#0 ] zp ZP_WORD:8 [ malloc::return#1 ] zp ZP_WORD:12 [ malloc::return#2 ]
|
|
Uplifting [] best 172 combination zp ZP_WORD:2 [ heap_head#10 heap_head#11 ]
|
|
Uplifting [main] best 172 combination zp ZP_WORD:10 [ main::buf2#0 ] zp ZP_WORD:6 [ main::buf1#0 ]
|
|
Coalescing zero page register [ zp ZP_WORD:4 [ malloc::return#0 ] ] with [ zp ZP_WORD:6 [ main::buf1#0 ] ] - score: 1
|
|
Coalescing zero page register [ zp ZP_WORD:8 [ malloc::return#1 ] ] with [ zp ZP_WORD:10 [ main::buf2#0 ] ] - score: 1
|
|
Coalescing zero page register [ zp ZP_WORD:8 [ malloc::return#1 main::buf2#0 ] ] with [ zp ZP_WORD:12 [ malloc::return#2 ] ] - score: 1
|
|
Allocated (was zp ZP_WORD:8) zp ZP_WORD:6 [ malloc::return#1 main::buf2#0 malloc::return#2 ]
|
|
|
|
ASSEMBLER BEFORE OPTIMIZATION
|
|
// File Comments
|
|
// Test void pointer - issues when assigning returns from malloc()
|
|
// Upstart
|
|
.pc = $801 "Basic"
|
|
:BasicUpstart(bbegin)
|
|
.pc = $80d "Program"
|
|
// Global Constants & labels
|
|
.label SCREEN = $400
|
|
.label heap_head = 2
|
|
// @begin
|
|
bbegin:
|
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
|
b1_from_bbegin:
|
|
jmp b1
|
|
// @1
|
|
b1:
|
|
// [2] call main
|
|
// [4] phi from @1 to main [phi:@1->main]
|
|
main_from_b1:
|
|
jsr main
|
|
// [3] phi from @1 to @end [phi:@1->@end]
|
|
bend_from_b1:
|
|
jmp bend
|
|
// @end
|
|
bend:
|
|
// main
|
|
main: {
|
|
.label buf1 = 4
|
|
.label buf2 = 6
|
|
// [5] call malloc
|
|
// [16] phi from main to malloc [phi:main->malloc]
|
|
malloc_from_main:
|
|
// [16] phi (byte*) heap_head#10 = (byte*) 49152 [phi:main->malloc#0] -- pbuz1=pbuc1
|
|
lda #<$c000
|
|
sta.z heap_head
|
|
lda #>$c000
|
|
sta.z heap_head+1
|
|
jsr malloc
|
|
// [6] (void*) malloc::return#0 ← (void*) malloc::return#2 -- pvoz1=pvoz2
|
|
lda.z malloc.return_2
|
|
sta.z malloc.return
|
|
lda.z malloc.return_2+1
|
|
sta.z malloc.return+1
|
|
jmp b1
|
|
// main::@1
|
|
b1:
|
|
// [7] (void*) main::buf1#0 ← (void*) malloc::return#0
|
|
// [8] call malloc
|
|
// [16] phi from main::@1 to malloc [phi:main::@1->malloc]
|
|
malloc_from_b1:
|
|
// [16] phi (byte*) heap_head#10 = (byte*) heap_head#11 [phi:main::@1->malloc#0] -- register_copy
|
|
jsr malloc
|
|
// [9] (void*) malloc::return#1 ← (void*) malloc::return#2
|
|
jmp b2
|
|
// main::@2
|
|
b2:
|
|
// [10] (void*) main::buf2#0 ← (void*) malloc::return#1
|
|
// [11] *((byte*)(void*) main::buf1#0) ← (byte) 'a' -- _deref_pbuz1=vbuc1
|
|
lda #'a'
|
|
ldy #0
|
|
sta (buf1),y
|
|
// [12] *((byte*)(void*) main::buf2#0) ← (byte) 'b' -- _deref_pbuz1=vbuc1
|
|
lda #'b'
|
|
ldy #0
|
|
sta (buf2),y
|
|
// [13] *((const byte*) SCREEN) ← *((byte*)(void*) main::buf1#0) -- _deref_pbuc1=_deref_pbuz1
|
|
ldy #0
|
|
lda (buf1),y
|
|
sta SCREEN
|
|
// [14] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(void*) main::buf2#0) -- _deref_pbuc1=_deref_pbuz1
|
|
ldy #0
|
|
lda (buf2),y
|
|
sta SCREEN+1
|
|
jmp breturn
|
|
// main::@return
|
|
breturn:
|
|
// [15] return
|
|
rts
|
|
}
|
|
// malloc
|
|
malloc: {
|
|
.label return = 4
|
|
.label return_1 = 6
|
|
.label return_2 = 6
|
|
// [17] (byte*) heap_head#11 ← ++ (byte*) heap_head#10 -- pbuz1=_inc_pbuz1
|
|
inc.z heap_head
|
|
bne !+
|
|
inc.z heap_head+1
|
|
!:
|
|
// [18] (void*) malloc::return#2 ← (void*)(byte*) heap_head#11 -- pvoz1=pvoz2
|
|
lda.z heap_head
|
|
sta.z return_2
|
|
lda.z heap_head+1
|
|
sta.z return_2+1
|
|
jmp breturn
|
|
// malloc::@return
|
|
breturn:
|
|
// [19] return
|
|
rts
|
|
}
|
|
// File Data
|
|
|
|
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
|
|
Removing instruction ldy #0
|
|
Removing instruction ldy #0
|
|
Removing instruction ldy #0
|
|
Succesful ASM optimization Pass5UnnecesaryLoadElimination
|
|
Removing instruction b1_from_bbegin:
|
|
Removing instruction b1:
|
|
Removing instruction main_from_b1:
|
|
Removing instruction bend_from_b1:
|
|
Removing instruction malloc_from_b1:
|
|
Succesful ASM optimization Pass5RedundantLabelElimination
|
|
Removing instruction bend:
|
|
Removing instruction malloc_from_main:
|
|
Removing instruction b1:
|
|
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 bbegin:
|
|
Succesful ASM optimization Pass5UnusedLabelElimination
|
|
|
|
FINAL SYMBOL TABLE
|
|
(label) @1
|
|
(label) @begin
|
|
(label) @end
|
|
(const byte*) SCREEN SCREEN = (byte*) 1024
|
|
(byte*) heap_head
|
|
(byte*) heap_head#10 heap_head zp ZP_WORD:2 4.0
|
|
(byte*) heap_head#11 heap_head zp ZP_WORD:2 0.6666666666666666
|
|
(void()) main()
|
|
(label) main::@1
|
|
(label) main::@2
|
|
(label) main::@return
|
|
(byte*) main::buf1
|
|
(void*) main::buf1#0 buf1 zp ZP_WORD:4 0.3333333333333333
|
|
(byte*) main::buf2
|
|
(void*) main::buf2#0 buf2 zp ZP_WORD:6 0.5
|
|
(void*()) malloc()
|
|
(label) malloc::@return
|
|
(void*) malloc::return
|
|
(void*) malloc::return#0 return zp ZP_WORD:4 4.0
|
|
(void*) malloc::return#1 return#1 zp ZP_WORD:6 4.0
|
|
(void*) malloc::return#2 return#2 zp ZP_WORD:6 1.5
|
|
|
|
zp ZP_WORD:2 [ heap_head#10 heap_head#11 ]
|
|
zp ZP_WORD:4 [ malloc::return#0 main::buf1#0 ]
|
|
zp ZP_WORD:6 [ malloc::return#1 main::buf2#0 malloc::return#2 ]
|
|
|
|
|
|
FINAL ASSEMBLER
|
|
Score: 106
|
|
|
|
// File Comments
|
|
// Test void pointer - issues when assigning returns from malloc()
|
|
// Upstart
|
|
.pc = $801 "Basic"
|
|
:BasicUpstart(main)
|
|
.pc = $80d "Program"
|
|
// Global Constants & labels
|
|
.label SCREEN = $400
|
|
.label heap_head = 2
|
|
// @begin
|
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
|
// @1
|
|
// [2] call main
|
|
// [4] phi from @1 to main [phi:@1->main]
|
|
// [3] phi from @1 to @end [phi:@1->@end]
|
|
// @end
|
|
// main
|
|
main: {
|
|
.label buf1 = 4
|
|
.label buf2 = 6
|
|
// malloc()
|
|
// [5] call malloc
|
|
// [16] phi from main to malloc [phi:main->malloc]
|
|
// [16] phi (byte*) heap_head#10 = (byte*) 49152 [phi:main->malloc#0] -- pbuz1=pbuc1
|
|
lda #<$c000
|
|
sta.z heap_head
|
|
lda #>$c000
|
|
sta.z heap_head+1
|
|
jsr malloc
|
|
// malloc()
|
|
// [6] (void*) malloc::return#0 ← (void*) malloc::return#2 -- pvoz1=pvoz2
|
|
lda.z malloc.return_2
|
|
sta.z malloc.return
|
|
lda.z malloc.return_2+1
|
|
sta.z malloc.return+1
|
|
// main::@1
|
|
// [7] (void*) main::buf1#0 ← (void*) malloc::return#0
|
|
// [8] call malloc
|
|
// [16] phi from main::@1 to malloc [phi:main::@1->malloc]
|
|
// [16] phi (byte*) heap_head#10 = (byte*) heap_head#11 [phi:main::@1->malloc#0] -- register_copy
|
|
jsr malloc
|
|
// malloc()
|
|
// [9] (void*) malloc::return#1 ← (void*) malloc::return#2
|
|
// main::@2
|
|
// [10] (void*) main::buf2#0 ← (void*) malloc::return#1
|
|
// *buf1 = 'a'
|
|
// [11] *((byte*)(void*) main::buf1#0) ← (byte) 'a' -- _deref_pbuz1=vbuc1
|
|
lda #'a'
|
|
ldy #0
|
|
sta (buf1),y
|
|
// *buf2 = 'b'
|
|
// [12] *((byte*)(void*) main::buf2#0) ← (byte) 'b' -- _deref_pbuz1=vbuc1
|
|
lda #'b'
|
|
sta (buf2),y
|
|
// SCREEN[0] = *buf1
|
|
// [13] *((const byte*) SCREEN) ← *((byte*)(void*) main::buf1#0) -- _deref_pbuc1=_deref_pbuz1
|
|
lda (buf1),y
|
|
sta SCREEN
|
|
// SCREEN[1] = *buf2
|
|
// [14] *((const byte*) SCREEN+(byte) 1) ← *((byte*)(void*) main::buf2#0) -- _deref_pbuc1=_deref_pbuz1
|
|
lda (buf2),y
|
|
sta SCREEN+1
|
|
// main::@return
|
|
// }
|
|
// [15] return
|
|
rts
|
|
}
|
|
// malloc
|
|
malloc: {
|
|
.label return = 4
|
|
.label return_1 = 6
|
|
.label return_2 = 6
|
|
// heap_head++;
|
|
// [17] (byte*) heap_head#11 ← ++ (byte*) heap_head#10 -- pbuz1=_inc_pbuz1
|
|
inc.z heap_head
|
|
bne !+
|
|
inc.z heap_head+1
|
|
!:
|
|
// return heap_head;
|
|
// [18] (void*) malloc::return#2 ← (void*)(byte*) heap_head#11 -- pvoz1=pvoz2
|
|
lda.z heap_head
|
|
sta.z return_2
|
|
lda.z heap_head+1
|
|
sta.z return_2+1
|
|
// malloc::@return
|
|
// }
|
|
// [19] return
|
|
rts
|
|
}
|
|
// File Data
|
|
|