mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-06-29 09:29:31 +00:00
489 lines
16 KiB
Plaintext
489 lines
16 KiB
Plaintext
Inlined call call __init
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Eliminating unused variable with no statement main::$0
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Eliminating unused variable with no statement main::$1
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CONTROL FLOW GRAPH SSA
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void main()
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main: scope:[main] from __start::@1
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heap_head#15 = phi( __start::@1/heap_head#16 )
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call malloc
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malloc::return#0 = malloc::return#3
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to:main::@1
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main::@1: scope:[main] from main
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heap_head#8 = phi( main/heap_head#4 )
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malloc::return#4 = phi( main/malloc::return#0 )
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main::buf1#0 = ((char *)) malloc::return#4
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heap_head#0 = heap_head#8
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call malloc
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malloc::return#1 = 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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main::buf1#1 = phi( main::@1/main::buf1#0 )
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heap_head#9 = phi( main::@1/heap_head#4 )
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malloc::return#5 = phi( main::@1/malloc::return#1 )
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main::buf2#0 = ((char *)) malloc::return#5
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heap_head#1 = heap_head#9
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*main::buf1#1 = 'a'
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*main::buf2#0 = 'b'
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SCREEN[0] = *main::buf1#1
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SCREEN[1] = *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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heap_head#10 = phi( main::@2/heap_head#1 )
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heap_head#2 = heap_head#10
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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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heap_head#11 = phi( main/heap_head#15, main::@1/heap_head#0 )
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heap_head#3 = ++ heap_head#11
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malloc::return#2 = ((void *)) heap_head#3
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to:malloc::@return
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malloc::@return: scope:[malloc] from malloc
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heap_head#12 = phi( malloc/heap_head#3 )
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malloc::return#6 = phi( malloc/malloc::return#2 )
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malloc::return#3 = malloc::return#6
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heap_head#4 = heap_head#12
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return
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to:@return
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void __start()
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__start: scope:[__start] from
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to:__start::__init1
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__start::__init1: scope:[__start] from __start
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heap_head#5 = (char *)$c000
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to:__start::@1
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__start::@1: scope:[__start] from __start::__init1
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heap_head#16 = phi( __start::__init1/heap_head#5 )
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call main
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to:__start::@2
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__start::@2: scope:[__start] from __start::@1
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heap_head#13 = phi( __start::@1/heap_head#2 )
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heap_head#6 = heap_head#13
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to:__start::@return
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__start::@return: scope:[__start] from __start::@2
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heap_head#14 = phi( __start::@2/heap_head#6 )
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heap_head#7 = heap_head#14
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return
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to:@return
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SYMBOL TABLE SSA
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__constant char * const SCREEN = (char *)$400
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void __start()
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char *heap_head
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char *heap_head#0
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char *heap_head#1
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char *heap_head#10
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char *heap_head#11
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char *heap_head#12
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char *heap_head#13
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char *heap_head#14
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char *heap_head#15
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char *heap_head#16
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char *heap_head#2
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char *heap_head#3
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char *heap_head#4
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char *heap_head#5
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char *heap_head#6
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char *heap_head#7
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char *heap_head#8
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char *heap_head#9
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void main()
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char *main::buf1
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char *main::buf1#0
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char *main::buf1#1
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char *main::buf2
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char *main::buf2#0
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void * malloc()
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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 SCREEN[0] = *main::buf1#1
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Adding number conversion cast (unumber) 1 in SCREEN[1] = *main::buf2#0
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast main::buf1#0 = (char *)malloc::return#4
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Inlining cast main::buf2#0 = (char *)malloc::return#5
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Inlining cast malloc::return#2 = (void *)heap_head#3
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Successful SSA optimization Pass2InlineCast
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Simplifying constant pointer cast (char *) 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 (char *) 49152
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (char) 0
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Finalized unsigned number type (char) 1
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias malloc::return#0 = malloc::return#4
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Alias heap_head#0 = heap_head#8
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Alias malloc::return#1 = malloc::return#5
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Alias main::buf1#0 = main::buf1#1
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Alias heap_head#1 = heap_head#9 heap_head#10 heap_head#2
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Alias malloc::return#2 = malloc::return#6 malloc::return#3
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Alias heap_head#12 = heap_head#3 heap_head#4
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Alias heap_head#16 = heap_head#5
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Alias heap_head#13 = heap_head#6 heap_head#14 heap_head#7
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Successful SSA optimization Pass2AliasElimination
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Identical Phi Values heap_head#15 heap_head#16
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Identical Phi Values heap_head#0 heap_head#12
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Identical Phi Values heap_head#1 heap_head#12
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Identical Phi Values heap_head#13 heap_head#1
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Successful SSA optimization Pass2IdenticalPhiElimination
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Constant heap_head#16 = (char *) 49152
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Successful SSA optimization Pass2ConstantIdentification
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Simplifying expression containing zero SCREEN in [11] SCREEN[0] = *main::buf1#0
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Successful SSA optimization PassNSimplifyExpressionWithZero
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Removing unused procedure __start
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Removing unused procedure block __start
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Removing unused procedure block __start::__init1
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Removing unused procedure block __start::@1
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Removing unused procedure block __start::@2
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Removing unused procedure block __start::@return
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Successful SSA optimization PassNEliminateEmptyStart
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Inlining constant with var siblings heap_head#16
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Constant inlined heap_head#16 = (char *) 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 main
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CALL GRAPH
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Calls in [main] to malloc:1 malloc:5
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Created 1 initial phi equivalence classes
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Coalesced [4] heap_head#17 = heap_head#12
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Coalesced down to 1 phi equivalence classes
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Adding NOP phi() at start of main
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FINAL CONTROL FLOW GRAPH
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void main()
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main: scope:[main] from
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[0] phi()
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[1] call malloc
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[2] malloc::return#0 = malloc::return#2
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to:main::@1
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main::@1: scope:[main] from main
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[3] main::buf1#0 = (char *)malloc::return#0
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[4] call malloc
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[5] malloc::return#1 = 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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[6] main::buf2#0 = (char *)malloc::return#1
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[7] *main::buf1#0 = 'a'
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[8] *main::buf2#0 = 'b'
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[9] *SCREEN = *main::buf1#0
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[10] *(SCREEN+1) = *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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[11] 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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[12] heap_head#11 = phi( main/(char *) 49152, main::@1/heap_head#12 )
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[13] heap_head#12 = ++ heap_head#11
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[14] malloc::return#2 = (void *)heap_head#12
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to:malloc::@return
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malloc::@return: scope:[malloc] from malloc
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[15] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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char *heap_head
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char *heap_head#11 // 13.0
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char *heap_head#12 // 2.1666666666666665
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void main()
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char *main::buf1
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char *main::buf1#0 // 1.0
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char *main::buf2
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char *main::buf2#0 // 1.5
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void * malloc()
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void *malloc::return
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void *malloc::return#0 // 2.0
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void *malloc::return#1 // 2.0
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void *malloc::return#2 // 3.75
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Initial phi equivalence classes
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[ heap_head#11 heap_head#12 ]
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Added variable malloc::return#0 to live range equivalence class [ malloc::return#0 ]
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Added variable main::buf1#0 to live range equivalence class [ main::buf1#0 ]
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Added variable malloc::return#1 to live range equivalence class [ malloc::return#1 ]
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Added variable main::buf2#0 to live range equivalence class [ main::buf2#0 ]
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Added variable malloc::return#2 to live range equivalence class [ malloc::return#2 ]
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Complete equivalence classes
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[ heap_head#11 heap_head#12 ]
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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[2]:2 [ heap_head#11 heap_head#12 ]
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Allocated zp[2]:4 [ malloc::return#2 ]
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Allocated zp[2]:6 [ malloc::return#0 ]
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Allocated zp[2]:8 [ malloc::return#1 ]
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Allocated zp[2]:10 [ main::buf2#0 ]
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Allocated zp[2]:12 [ main::buf1#0 ]
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [2] malloc::return#0 = malloc::return#2 [ malloc::return#0 heap_head#12 ] ( [ malloc::return#0 heap_head#12 ] { { malloc::return#0 = malloc::return#2 } } ) always clobbers reg byte a
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Statement [3] main::buf1#0 = (char *)malloc::return#0 [ main::buf1#0 heap_head#12 ] ( [ main::buf1#0 heap_head#12 ] { { heap_head#11 = heap_head#12 } { malloc::return#1 = malloc::return#2 } } ) always clobbers reg byte a
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Statement [5] malloc::return#1 = malloc::return#2 [ main::buf1#0 malloc::return#1 ] ( [ main::buf1#0 malloc::return#1 ] { { heap_head#11 = heap_head#12 } { malloc::return#1 = malloc::return#2 } } ) always clobbers reg byte a
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Statement [6] main::buf2#0 = (char *)malloc::return#1 [ main::buf1#0 main::buf2#0 ] ( [ main::buf1#0 main::buf2#0 ] { } ) always clobbers reg byte a
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Statement [7] *main::buf1#0 = 'a' [ main::buf1#0 main::buf2#0 ] ( [ main::buf1#0 main::buf2#0 ] { } ) always clobbers reg byte a reg byte y
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Statement [8] *main::buf2#0 = 'b' [ main::buf1#0 main::buf2#0 ] ( [ main::buf1#0 main::buf2#0 ] { } ) always clobbers reg byte a reg byte y
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Statement [9] *SCREEN = *main::buf1#0 [ main::buf2#0 ] ( [ main::buf2#0 ] { } ) always clobbers reg byte a reg byte y
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Statement [10] *(SCREEN+1) = *main::buf2#0 [ ] ( [ ] { } ) always clobbers reg byte a reg byte y
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Statement [14] malloc::return#2 = (void *)heap_head#12 [ malloc::return#2 heap_head#12 ] ( malloc:1 [ malloc::return#2 heap_head#12 ] { { malloc::return#0 = malloc::return#2 } } malloc:4 [ main::buf1#0 malloc::return#2 heap_head#12 ] { { heap_head#11 = heap_head#12 } { malloc::return#1 = malloc::return#2 } } ) always clobbers reg byte a
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Potential registers zp[2]:2 [ heap_head#11 heap_head#12 ] : zp[2]:2 ,
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Potential registers zp[2]:6 [ malloc::return#0 ] : zp[2]:6 ,
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Potential registers zp[2]:12 [ main::buf1#0 ] : zp[2]:12 ,
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Potential registers zp[2]:8 [ malloc::return#1 ] : zp[2]:8 ,
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Potential registers zp[2]:10 [ main::buf2#0 ] : zp[2]:10 ,
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Potential registers zp[2]:4 [ malloc::return#2 ] : zp[2]:4 ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [] 15.17: zp[2]:2 [ heap_head#11 heap_head#12 ]
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Uplift Scope [malloc] 3.75: zp[2]:4 [ malloc::return#2 ] 2: zp[2]:6 [ malloc::return#0 ] 2: zp[2]:8 [ malloc::return#1 ]
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Uplift Scope [main] 1.5: zp[2]:10 [ main::buf2#0 ] 1: zp[2]:12 [ main::buf1#0 ]
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Uplifting [] best 160 combination zp[2]:2 [ heap_head#11 heap_head#12 ]
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Uplifting [malloc] best 160 combination zp[2]:4 [ malloc::return#2 ] zp[2]:6 [ malloc::return#0 ] zp[2]:8 [ malloc::return#1 ]
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Uplifting [main] best 160 combination zp[2]:10 [ main::buf2#0 ] zp[2]:12 [ main::buf1#0 ]
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Coalescing zero page register [ zp[2]:6 [ malloc::return#0 ] ] with [ zp[2]:12 [ main::buf1#0 ] ] - score: 1
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Coalescing zero page register [ zp[2]:8 [ malloc::return#1 ] ] with [ zp[2]:10 [ main::buf2#0 ] ] - score: 1
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Coalescing zero page register [ zp[2]:8 [ malloc::return#1 main::buf2#0 ] ] with [ zp[2]:4 [ malloc::return#2 ] ] - score: 1
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Allocated (was zp[2]:8) zp[2]:4 [ malloc::return#1 main::buf2#0 malloc::return#2 ]
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ASSEMBLER BEFORE OPTIMIZATION
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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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// Commodore 64 PRG executable file
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.file [name="pointer-void-3.prg", type="prg", segments="Program"]
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.segmentdef Program [segments="Basic, Code, Data"]
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.segmentdef Basic [start=$0801]
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.segmentdef Code [start=$80d]
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.segmentdef Data [startAfter="Code"]
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.segment Basic
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:BasicUpstart(main)
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// Global Constants & labels
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.label SCREEN = $400
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.label heap_head = 2
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.segment Code
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// main
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main: {
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.label buf1 = 6
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.label buf2 = 4
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// [1] call malloc
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// [12] phi from main to malloc [phi:main->malloc]
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malloc_from_main:
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// [12] phi heap_head#11 = (char *) 49152 [phi:main->malloc#0] -- pbuz1=pbuc1
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lda #<$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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// [2] malloc::return#0 = malloc::return#2 -- pvoz1=pvoz2
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lda.z malloc.return_1
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sta.z malloc.return
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lda.z malloc.return_1+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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// [3] main::buf1#0 = (char *)malloc::return#0
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// [4] call malloc
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// [12] phi from main::@1 to malloc [phi:main::@1->malloc]
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malloc_from___b1:
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// [12] phi heap_head#11 = heap_head#12 [phi:main::@1->malloc#0] -- register_copy
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jsr malloc
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// [5] malloc::return#1 = malloc::return#2
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jmp __b2
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// main::@2
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__b2:
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// [6] main::buf2#0 = (char *)malloc::return#1
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// [7] *main::buf1#0 = '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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// [8] *main::buf2#0 = '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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// [9] *SCREEN = *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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// [10] *(SCREEN+1) = *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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// [11] 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 = 6
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.label return_1 = 4
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// [13] heap_head#12 = ++ heap_head#11 -- 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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// [14] malloc::return#2 = (void *)heap_head#12 -- pvoz1=pvoz2
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lda.z heap_head
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sta.z return_1
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lda.z heap_head+1
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sta.z return_1+1
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jmp __breturn
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// malloc::@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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// File Data
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ASSEMBLER OPTIMIZATIONS
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Removing instruction jmp __b1
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Removing instruction jmp __b2
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Removing instruction jmp __breturn
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Removing instruction jmp __breturn
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Succesful ASM optimization Pass5NextJumpElimination
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Removing instruction ldy #0
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Removing instruction ldy #0
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Removing instruction ldy #0
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Succesful ASM optimization Pass5UnnecesaryLoadElimination
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Removing instruction malloc_from___b1:
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Succesful ASM optimization Pass5RedundantLabelElimination
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Removing instruction malloc_from_main:
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Removing instruction __b1:
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Removing instruction __b2:
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Removing instruction __breturn:
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Removing instruction __breturn:
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Succesful ASM optimization Pass5UnusedLabelElimination
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FINAL SYMBOL TABLE
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__constant char * const SCREEN = (char *) 1024
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char *heap_head
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char *heap_head#11 // heap_head zp[2]:2 13.0
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char *heap_head#12 // heap_head zp[2]:2 2.1666666666666665
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void main()
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char *main::buf1
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char *main::buf1#0 // buf1 zp[2]:6 1.0
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char *main::buf2
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char *main::buf2#0 // buf2 zp[2]:4 1.5
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void * malloc()
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void *malloc::return
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void *malloc::return#0 // return zp[2]:6 2.0
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void *malloc::return#1 // return_1 zp[2]:4 2.0
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void *malloc::return#2 // return_1 zp[2]:4 3.75
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zp[2]:2 [ heap_head#11 heap_head#12 ]
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zp[2]:6 [ malloc::return#0 main::buf1#0 ]
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zp[2]:4 [ malloc::return#1 main::buf2#0 malloc::return#2 ]
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FINAL ASSEMBLER
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Score: 106
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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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// Commodore 64 PRG executable file
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.file [name="pointer-void-3.prg", type="prg", segments="Program"]
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.segmentdef Program [segments="Basic, Code, Data"]
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.segmentdef Basic [start=$0801]
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.segmentdef Code [start=$80d]
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.segmentdef Data [startAfter="Code"]
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.segment Basic
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:BasicUpstart(main)
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// Global Constants & labels
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.label SCREEN = $400
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.label heap_head = 2
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.segment Code
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// main
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main: {
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.label buf1 = 6
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.label buf2 = 4
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// byte* buf1 = malloc()
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// [1] call malloc
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// [12] phi from main to malloc [phi:main->malloc]
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// [12] phi heap_head#11 = (char *) 49152 [phi:main->malloc#0] -- pbuz1=pbuc1
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lda #<$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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// byte* buf1 = malloc()
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// [2] malloc::return#0 = malloc::return#2 -- pvoz1=pvoz2
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lda.z malloc.return_1
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sta.z malloc.return
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lda.z malloc.return_1+1
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sta.z malloc.return+1
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// main::@1
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// [3] main::buf1#0 = (char *)malloc::return#0
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// byte* buf2 = malloc()
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// [4] call malloc
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// [12] phi from main::@1 to malloc [phi:main::@1->malloc]
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// [12] phi heap_head#11 = heap_head#12 [phi:main::@1->malloc#0] -- register_copy
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jsr malloc
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// byte* buf2 = malloc()
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// [5] malloc::return#1 = malloc::return#2
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// main::@2
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// [6] main::buf2#0 = (char *)malloc::return#1
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// *buf1 = 'a'
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// [7] *main::buf1#0 = '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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// *buf2 = 'b'
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// [8] *main::buf2#0 = 'b' -- _deref_pbuz1=vbuc1
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lda #'b'
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sta (buf2),y
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// SCREEN[0] = *buf1
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// [9] *SCREEN = *main::buf1#0 -- _deref_pbuc1=_deref_pbuz1
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lda (buf1),y
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sta SCREEN
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// SCREEN[1] = *buf2
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// [10] *(SCREEN+1) = *main::buf2#0 -- _deref_pbuc1=_deref_pbuz1
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lda (buf2),y
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sta SCREEN+1
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// main::@return
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// }
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// [11] 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 = 6
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.label return_1 = 4
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// heap_head++;
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// [13] heap_head#12 = ++ heap_head#11 -- 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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// return heap_head;
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// [14] malloc::return#2 = (void *)heap_head#12 -- pvoz1=pvoz2
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lda.z heap_head
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sta.z return_1
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lda.z heap_head+1
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sta.z return_1+1
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// malloc::@return
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// }
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// [15] return
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rts
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}
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// File Data
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