mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-09-29 03:56:15 +00:00
304 lines
8.6 KiB
Plaintext
304 lines
8.6 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::i#0 = 0
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to:main::@1
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main::@1: scope:[main] from main main::@2
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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 < $a
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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::i#3 = phi( main::@1/main::i#2 )
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main::$2 = (char)main::i#3
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main::$1 = main::$2 * SIZEOF_INT
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main::SCREEN[main::$1] = main::i#3
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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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__constant char SIZEOF_INT = 2
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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::$1
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char main::$2
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__constant int * const main::SCREEN = (int *)$400
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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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Adding number conversion cast (snumber) $a in main::$0 = main::i#2 < $a
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant pointer cast (int *) 1024
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Simplifying constant integer cast $a
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Successful SSA optimization PassNCastSimplification
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Finalized signed number type (signed char) $a
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias main::i#2 = main::i#3
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Successful SSA optimization Pass2AliasElimination
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Simple Condition main::$0 [3] if(main::i#2<$a) goto main::@2
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant main::i#0 = 0
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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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Rewriting multiplication to use shift [3] main::$1 = main::$2 * SIZEOF_INT
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Successful SSA optimization Pass2MultiplyToShiftRewriting
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Inlining constant with var siblings main::i#0
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Constant inlined main::i#0 = 0
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Successful SSA optimization Pass2ConstantInlining
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Eliminating unused constant SIZEOF_INT
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Successful SSA optimization PassNEliminateUnusedVars
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Adding NOP phi() at start of main
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CALL GRAPH
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Created 1 initial phi equivalence classes
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Coalesced [8] main::i#4 = main::i#1
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Coalesced down to 1 phi equivalence classes
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Adding NOP phi() at start of main
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FINAL CONTROL FLOW GRAPH
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void main()
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main: scope:[main] from
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[0] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@2
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[1] main::i#2 = phi( main/0, main::@2/main::i#1 )
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[2] if(main::i#2<$a) 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::$2 = (char)main::i#2
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[5] main::$1 = main::$2 << 1
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[6] main::SCREEN[main::$1] = main::i#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::$1 // 22.0
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char main::$2 // 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 // 8.8
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Initial phi equivalence classes
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[ main::i#2 main::i#1 ]
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Added variable main::$2 to live range equivalence class [ main::$2 ]
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Added variable main::$1 to live range equivalence class [ main::$1 ]
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Complete equivalence classes
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[ main::i#2 main::i#1 ]
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[ main::$2 ]
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[ main::$1 ]
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Zero-page exhausted. Moving allocation to main memory main::i#2
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Allocated mem[2] [ main::i#2 main::i#1 ]
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Zero-page exhausted. Moving allocation to main memory main::$2
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Allocated mem[1] [ main::$2 ]
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Zero-page exhausted. Moving allocation to main memory main::$1
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Allocated mem[1] [ main::$1 ]
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [2] if(main::i#2<$a) goto main::@2 [ main::i#2 ] ( [ main::i#2 ] { } ) always clobbers reg byte a
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Statement [4] main::$2 = (char)main::i#2 [ main::i#2 main::$2 ] ( [ main::i#2 main::$2 ] { } ) always clobbers reg byte a
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Statement [5] main::$1 = main::$2 << 1 [ main::i#2 main::$1 ] ( [ main::i#2 main::$1 ] { } ) always clobbers reg byte a
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Statement [6] main::SCREEN[main::$1] = main::i#2 [ main::i#2 ] ( [ main::i#2 ] { } ) always clobbers reg byte a
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Potential registers mem[2] [ main::i#2 main::i#1 ] : mem[2] ,
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Potential registers mem[1] [ main::$2 ] : mem[1] , reg byte a , reg byte x , reg byte y ,
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Potential registers mem[1] [ main::$1 ] : mem[1] , reg byte a , reg byte x , reg byte y ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [main] 30.8: mem[2] [ main::i#2 main::i#1 ] 22: mem[1] [ main::$2 ] 22: mem[1] [ main::$1 ]
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Uplift Scope []
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Uplifting [main] best 841 combination mem[2] [ main::i#2 main::i#1 ] reg byte a [ main::$2 ] reg byte a [ main::$1 ]
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Uplifting [] best 841 combination
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Zero-page exhausted. Moving allocation to main memory main::i#2
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Tests warning when running out of zeropage-addresses for variables
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// Upstart
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// Commodore 64 PRG executable file
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.file [name="zeropage-exhausted.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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// And then allocate a 2-byte-variable
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main: {
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.label SCREEN = $400
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// [1] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [1] phi main::i#2 = 0 [phi:main->main::@1#0] -- vwsm1=vwsc1
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lda #<0
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sta i
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lda #>0
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sta i+1
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jmp __b1
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// main::@1
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__b1:
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// [2] if(main::i#2<$a) goto main::@2 -- vwsm1_lt_vwuc1_then_la1
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lda i+1
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bmi __b2
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cmp #>$a
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bcc __b2
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bne !+
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lda i
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cmp #<$a
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bcc __b2
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!:
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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::$2 = (char)main::i#2 -- vbuaa=_byte_vwsm1
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lda i
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// [5] main::$1 = main::$2 << 1 -- vbuaa=vbuaa_rol_1
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asl
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// [6] main::SCREEN[main::$1] = main::i#2 -- pwsc1_derefidx_vbuaa=vwsm1
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tay
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lda i
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sta SCREEN,y
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lda i+1
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sta SCREEN+1,y
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// [7] main::i#1 = ++ main::i#2 -- vwsm1=_inc_vwsm1
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inc i
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bne !+
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inc 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::i#2 = main::i#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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.segment Data
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i: .word 0
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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 lda #>0
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Succesful ASM optimization Pass5UnnecesaryLoadElimination
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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::$1 // reg byte a 22.0
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char main::$2 // reg byte a 22.0
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__constant int * const main::SCREEN = (int *) 1024
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int main::i
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int main::i#1 // i mem[2] 22.0
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int main::i#2 // i mem[2] 8.8
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mem[2] [ main::i#2 main::i#1 ]
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reg byte a [ main::$2 ]
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reg byte a [ main::$1 ]
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FINAL ASSEMBLER
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Score: 761
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// File Comments
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// Tests warning when running out of zeropage-addresses for variables
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// Upstart
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// Commodore 64 PRG executable file
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.file [name="zeropage-exhausted.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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// And then allocate a 2-byte-variable
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main: {
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.label SCREEN = $400
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// [1] phi from main to main::@1 [phi:main->main::@1]
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// [1] phi main::i#2 = 0 [phi:main->main::@1#0] -- vwsm1=vwsc1
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lda #<0
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sta i
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sta i+1
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// main::@1
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__b1:
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// for(__zp int i=0;i<10;i++)
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// [2] if(main::i#2<$a) goto main::@2 -- vwsm1_lt_vwuc1_then_la1
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lda i+1
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bmi __b2
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cmp #>$a
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bcc __b2
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bne !+
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lda i
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cmp #<$a
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bcc __b2
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!:
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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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// SCREEN[(char)i] = i
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// [4] main::$2 = (char)main::i#2 -- vbuaa=_byte_vwsm1
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lda i
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// [5] main::$1 = main::$2 << 1 -- vbuaa=vbuaa_rol_1
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asl
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// [6] main::SCREEN[main::$1] = main::i#2 -- pwsc1_derefidx_vbuaa=vwsm1
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tay
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lda i
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sta SCREEN,y
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lda i+1
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sta SCREEN+1,y
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// for(__zp int i=0;i<10;i++)
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// [7] main::i#1 = ++ main::i#2 -- vwsm1=_inc_vwsm1
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inc i
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bne !+
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inc 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::i#2 = main::i#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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.segment Data
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i: .word 0
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}
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// File Data
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