mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-09-29 03:56:15 +00:00
322 lines
9.2 KiB
Plaintext
322 lines
9.2 KiB
Plaintext
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CONTROL FLOW GRAPH SSA
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void main()
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main: scope:[main] from __start
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main::screen#0 = (char *)$400
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main::i#0 = -$3e8
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to:main::@1
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main::@1: scope:[main] from main main::@2
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main::screen#3 = phi( main/main::screen#0, main::@2/main::screen#1 )
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main::i#2 = phi( main/main::i#0, main::@2/main::i#1 )
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main::$0 = main::i#2 < $3e8
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if(main::$0) 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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main::screen#2 = phi( main::@1/main::screen#3 )
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main::i#3 = phi( main::@1/main::i#2 )
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main::c#0 = (char)main::i#3
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*main::screen#2 = main::c#0
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main::screen#1 = ++ main::screen#2
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main::i#1 = ++ main::i#3
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to:main::@1
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main::@return: scope:[main] from main::@1
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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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call main
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to:__start::@1
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__start::@1: scope:[__start] from __start
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to:__start::@return
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__start::@return: scope:[__start] from __start::@1
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return
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to:@return
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SYMBOL TABLE SSA
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void __start()
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void main()
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bool main::$0
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char main::c
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char main::c#0
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int main::i
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int main::i#0
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int main::i#1
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int main::i#2
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int main::i#3
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char *main::screen
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char *main::screen#0
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char *main::screen#1
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char *main::screen#2
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char *main::screen#3
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Adding number conversion cast (snumber) $3e8 in main::$0 = main::i#2 < $3e8
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant pointer cast (char *) 1024
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Simplifying constant integer cast $3e8
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Successful SSA optimization PassNCastSimplification
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Finalized signed number type (int) $3e8
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias main::i#2 = main::i#3
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Alias main::screen#2 = main::screen#3
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Successful SSA optimization Pass2AliasElimination
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Simple Condition main::$0 [4] if(main::i#2<$3e8) goto main::@2
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant main::screen#0 = (char *) 1024
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Constant main::i#0 = -$3e8
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Successful SSA optimization Pass2ConstantIdentification
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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::@1
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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 main::screen#0
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Inlining constant with var siblings main::i#0
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Constant inlined main::screen#0 = (char *) 1024
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Constant inlined main::i#0 = -$3e8
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Successful SSA optimization Pass2ConstantInlining
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Adding NOP phi() at start of main
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CALL GRAPH
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Created 2 initial phi equivalence classes
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Coalesced [8] main::i#4 = main::i#1
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Coalesced [9] main::screen#4 = main::screen#1
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Coalesced down to 2 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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to:main::@1
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main::@1: scope:[main] from main main::@2
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[1] main::screen#2 = phi( main/(char *) 1024, main::@2/main::screen#1 )
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[1] main::i#2 = phi( main/-$3e8, main::@2/main::i#1 )
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[2] if(main::i#2<$3e8) goto main::@2
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to:main::@return
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main::@return: scope:[main] from main::@1
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[3] return
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to:@return
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main::@2: scope:[main] from main::@1
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[4] main::c#0 = (char)main::i#2
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[5] *main::screen#2 = main::c#0
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[6] main::screen#1 = ++ main::screen#2
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[7] main::i#1 = ++ main::i#2
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to:main::@1
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VARIABLE REGISTER WEIGHTS
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void main()
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char main::c
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char main::c#0 // 22.0
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int main::i
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int main::i#1 // 22.0
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int main::i#2 // 6.6000000000000005
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char *main::screen
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char *main::screen#1 // 11.0
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char *main::screen#2 // 8.25
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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#1 ]
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Added variable main::c#0 to live range equivalence class [ main::c#0 ]
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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#1 ]
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[ main::c#0 ]
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Allocated zp[2]:2 [ main::i#2 main::i#1 ]
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Allocated zp[1]:4 [ main::c#0 ]
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Allocated zp[2]:5 [ main::screen#2 main::screen#1 ]
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [2] if(main::i#2<$3e8) goto main::@2 [ main::i#2 main::screen#2 ] ( [ main::i#2 main::screen#2 ] { } ) always clobbers reg byte a
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Statement [4] main::c#0 = (char)main::i#2 [ main::i#2 main::screen#2 main::c#0 ] ( [ main::i#2 main::screen#2 main::c#0 ] { } ) always clobbers reg byte a
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Statement [5] *main::screen#2 = main::c#0 [ main::i#2 main::screen#2 ] ( [ main::i#2 main::screen#2 ] { } ) always clobbers reg byte y
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Potential registers zp[2]:2 [ main::i#2 main::i#1 ] : zp[2]:2 ,
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Potential registers zp[2]:5 [ main::screen#2 main::screen#1 ] : zp[2]:5 ,
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Potential registers zp[1]:4 [ main::c#0 ] : zp[1]:4 , reg byte a , reg byte x , reg byte y ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [main] 28.6: zp[2]:2 [ main::i#2 main::i#1 ] 22: zp[1]:4 [ main::c#0 ] 19.25: zp[2]:5 [ main::screen#2 main::screen#1 ]
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Uplift Scope []
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Uplifting [main] best 826 combination zp[2]:2 [ main::i#2 main::i#1 ] reg byte a [ main::c#0 ] zp[2]:5 [ main::screen#2 main::screen#1 ]
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Uplifting [] best 826 combination
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Allocated (was zp[2]:5) zp[2]:4 [ main::screen#2 main::screen#1 ]
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Tests a cast that is not needed
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// When assigning a char from an integer
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// Upstart
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// Commodore 64 PRG executable file
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.file [name="cast-not-needed-4.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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.segment Code
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// main
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main: {
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.label screen = 4
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.label i = 2
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// [1] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [1] phi main::screen#2 = (char *) 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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// [1] phi main::i#2 = -$3e8 [phi:main->main::@1#1] -- vwsz1=vwsc1
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lda #<-$3e8
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sta.z i
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lda #>-$3e8
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sta.z i+1
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jmp __b1
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// main::@1
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__b1:
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// [2] if(main::i#2<$3e8) goto main::@2 -- vwsz1_lt_vwsc1_then_la1
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lda.z i
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cmp #<$3e8
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lda.z i+1
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sbc #>$3e8
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bvc !+
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eor #$80
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!:
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bmi __b2
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jmp __breturn
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// main::@return
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__breturn:
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// [3] return
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rts
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// main::@2
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__b2:
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// [4] main::c#0 = (char)main::i#2 -- vbuaa=_byte_vwsz1
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lda.z i
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// [5] *main::screen#2 = main::c#0 -- _deref_pbuz1=vbuaa
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ldy #0
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sta (screen),y
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// [6] main::screen#1 = ++ 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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// [7] main::i#1 = ++ main::i#2 -- vwsz1=_inc_vwsz1
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inc.z i
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bne !+
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inc.z i+1
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!:
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// [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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__b1_from___b2:
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// [1] phi main::screen#2 = main::screen#1 [phi:main::@2->main::@1#0] -- register_copy
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// [1] phi main::i#2 = main::i#1 [phi:main::@2->main::@1#1] -- register_copy
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jmp __b1
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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 __breturn
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Succesful ASM optimization Pass5NextJumpElimination
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Removing instruction __b1_from_main:
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Removing instruction __breturn:
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Removing instruction __b1_from___b2:
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Succesful ASM optimization Pass5UnusedLabelElimination
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FINAL SYMBOL TABLE
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void main()
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char main::c
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char main::c#0 // reg byte a 22.0
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int main::i
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int main::i#1 // i zp[2]:2 22.0
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int main::i#2 // i zp[2]:2 6.6000000000000005
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char *main::screen
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char *main::screen#1 // screen zp[2]:4 11.0
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char *main::screen#2 // screen zp[2]:4 8.25
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zp[2]:2 [ main::i#2 main::i#1 ]
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zp[2]:4 [ main::screen#2 main::screen#1 ]
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reg byte a [ main::c#0 ]
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FINAL ASSEMBLER
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Score: 766
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// File Comments
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// Tests a cast that is not needed
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// When assigning a char from an integer
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// Upstart
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// Commodore 64 PRG executable file
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.file [name="cast-not-needed-4.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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.segment Code
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// main
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main: {
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.label screen = 4
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.label i = 2
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// [1] phi from main to main::@1 [phi:main->main::@1]
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// [1] phi main::screen#2 = (char *) 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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// [1] phi main::i#2 = -$3e8 [phi:main->main::@1#1] -- vwsz1=vwsc1
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lda #<-$3e8
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sta.z i
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lda #>-$3e8
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sta.z i+1
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// main::@1
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__b1:
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// for(int i=-1000;i<1000;i++)
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// [2] if(main::i#2<$3e8) goto main::@2 -- vwsz1_lt_vwsc1_then_la1
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lda.z i
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cmp #<$3e8
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lda.z i+1
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sbc #>$3e8
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bvc !+
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eor #$80
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!:
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bmi __b2
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// main::@return
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// }
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// [3] return
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rts
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// main::@2
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__b2:
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// char c = i
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// [4] main::c#0 = (char)main::i#2 -- vbuaa=_byte_vwsz1
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lda.z i
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// *(screen++) = c
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// [5] *main::screen#2 = main::c#0 -- _deref_pbuz1=vbuaa
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ldy #0
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sta (screen),y
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// *(screen++) = c;
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// [6] main::screen#1 = ++ 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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// for(int i=-1000;i<1000;i++)
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// [7] main::i#1 = ++ main::i#2 -- vwsz1=_inc_vwsz1
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inc.z i
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bne !+
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inc.z i+1
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!:
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// [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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// [1] phi main::screen#2 = main::screen#1 [phi:main::@2->main::@1#0] -- register_copy
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// [1] phi main::i#2 = main::i#1 [phi:main::@2->main::@1#1] -- register_copy
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jmp __b1
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}
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// File Data
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