mirror of
https://gitlab.com/camelot/kickc.git
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496 lines
14 KiB
Plaintext
496 lines
14 KiB
Plaintext
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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to:@1
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(void()) main()
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main: scope:[main] from @2
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(byte) idx#13 ← phi( @2/(byte) idx#14 )
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(byte*) print::m#0 ← (const byte*) msg1
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call print
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to:main::@1
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main::@1: scope:[main] from main
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(byte) idx#7 ← phi( main/(byte) idx#5 )
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(byte) idx#0 ← (byte) idx#7
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(byte*) print::m#1 ← (const byte*) msg2
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call print
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to:main::@2
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main::@2: scope:[main] from main::@1
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(byte) idx#8 ← phi( main::@1/(byte) idx#5 )
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(byte) idx#1 ← (byte) idx#8
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to:main::@return
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main::@return: scope:[main] from main::@2
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(byte) idx#9 ← phi( main::@2/(byte) idx#1 )
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(byte) idx#2 ← (byte) idx#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) idx#3 ← (byte) 0
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to:@2
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(void()) print((byte*) print::m)
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print: scope:[print] from main main::@1
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(byte) idx#10 ← phi( main/(byte) idx#13 main::@1/(byte) idx#0 )
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(byte*) print::m#2 ← phi( main/(byte*) print::m#0 main::@1/(byte*) print::m#1 )
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(byte*~) print::$0 ← (byte*) print::m#2 + (number) 2
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*((const nomodify byte*) SCREEN + (byte) idx#10) ← *((byte*~) print::$0)
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(byte) idx#4 ← ++ (byte) idx#10
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to:print::@return
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print::@return: scope:[print] from print
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(byte) idx#11 ← phi( print/(byte) idx#4 )
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(byte) idx#5 ← (byte) idx#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) idx#14 ← phi( @1/(byte) idx#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) idx#12 ← phi( @2/(byte) idx#2 )
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(byte) idx#6 ← (byte) idx#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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(const nomodify byte*) SCREEN = (byte*)(number) $400
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(byte) idx
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(byte) idx#0
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(byte) idx#1
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(byte) idx#10
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(byte) idx#11
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(byte) idx#12
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(byte) idx#13
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(byte) idx#14
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(byte) idx#2
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(byte) idx#3
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(byte) idx#4
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(byte) idx#5
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(byte) idx#6
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(byte) idx#7
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(byte) idx#8
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(byte) idx#9
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(void()) main()
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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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(const byte*) msg1[] = { (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd' }
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(const byte*) msg2[] = { (byte) '1', (byte) '2', (byte) '3', (byte) '4' }
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(void()) print((byte*) print::m)
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(byte*~) print::$0
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(label) print::@return
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(byte*) print::m
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(byte*) print::m#0
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(byte*) print::m#1
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(byte*) print::m#2
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Adding number conversion cast (unumber) 2 in (byte*~) print::$0 ← (byte*) print::m#2 + (number) 2
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Successful SSA optimization PassNAddNumberTypeConversions
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Simplifying constant pointer cast (byte*) 1024
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Simplifying constant integer cast 2
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 2
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias idx#0 = idx#7
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Alias idx#1 = idx#8 idx#9 idx#2
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Alias idx#11 = idx#4 idx#5
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Alias idx#14 = idx#3
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Alias idx#12 = idx#6
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Successful SSA optimization Pass2AliasElimination
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Identical Phi Values (byte) idx#13 (byte) idx#14
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Identical Phi Values (byte) idx#0 (byte) idx#11
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Identical Phi Values (byte) idx#1 (byte) idx#11
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Identical Phi Values (byte) idx#12 (byte) idx#1
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Successful SSA optimization Pass2IdenticalPhiElimination
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Constant (const byte*) print::m#0 = msg1
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Constant (const byte*) print::m#1 = msg2
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Constant (const byte) idx#14 = 0
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Successful SSA optimization Pass2ConstantIdentification
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Converting *(pointer+n) to pointer[n] [11] *((const nomodify byte*) SCREEN + (byte) idx#10) ← *((byte*~) print::$0) -- *(print::m#2 + 2)
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Successful SSA optimization Pass2InlineDerefIdx
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Eliminating unused variable (byte*~) print::$0 and assignment [4] (byte*~) print::$0 ← (byte*) print::m#2 + (byte) 2
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Successful SSA optimization PassNEliminateUnusedVars
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Inlining constant with var siblings (const byte*) print::m#0
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Inlining constant with var siblings (const byte*) print::m#1
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Inlining constant with var siblings (const byte) idx#14
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Constant inlined idx#14 = (byte) 0
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Constant inlined print::m#1 = (const byte*) msg2
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Constant inlined print::m#0 = (const byte*) msg1
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Successful SSA optimization Pass2ConstantInlining
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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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Adding NOP phi() at start of main::@2
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CALL GRAPH
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Calls in [] to main:3
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Calls in [main] to print:7 print:9
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Created 2 initial phi equivalence classes
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Coalesced [8] idx#15 ← idx#11
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Coalesced down to 2 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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Culled Empty Block (label) main::@2
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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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Adding NOP phi() at start of main::@1
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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 print
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to:main::@1
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main::@1: scope:[main] from main
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[6] phi()
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[7] call print
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to:main::@return
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main::@return: scope:[main] from main::@1
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[8] return
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to:@return
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(void()) print((byte*) print::m)
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print: scope:[print] from main main::@1
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[9] (byte) idx#10 ← phi( main/(byte) 0 main::@1/(byte) idx#11 )
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[9] (byte*) print::m#2 ← phi( main/(const byte*) msg1 main::@1/(const byte*) msg2 )
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[10] *((const nomodify byte*) SCREEN + (byte) idx#10) ← *((byte*) print::m#2 + (byte) 2)
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[11] (byte) idx#11 ← ++ (byte) idx#10
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to:print::@return
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print::@return: scope:[print] from print
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[12] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(byte) idx
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(byte) idx#10 106.5
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(byte) idx#11 28.0
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(void()) main()
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(void()) print((byte*) print::m)
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(byte*) print::m
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(byte*) print::m#2 101.0
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Initial phi equivalence classes
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[ print::m#2 ]
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[ idx#10 idx#11 ]
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Complete equivalence classes
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[ print::m#2 ]
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[ idx#10 idx#11 ]
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Allocated zp[2]:2 [ print::m#2 ]
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Allocated zp[1]:4 [ idx#10 idx#11 ]
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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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// Tests optimizing derefs of *(ptr+b) to ptr[b]
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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.label idx = 4
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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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// [5] call print
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// [9] phi from main to print [phi:main->print]
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print_from_main:
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// [9] phi (byte) idx#10 = (byte) 0 [phi:main->print#0] -- vbuz1=vbuc1
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lda #0
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sta.z idx
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// [9] phi (byte*) print::m#2 = (const byte*) msg1 [phi:main->print#1] -- pbuz1=pbuc1
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lda #<msg1
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sta.z print.m
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lda #>msg1
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sta.z print.m+1
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jsr print
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// [6] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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jmp __b1
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// main::@1
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__b1:
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// [7] call print
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// [9] phi from main::@1 to print [phi:main::@1->print]
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print_from___b1:
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// [9] phi (byte) idx#10 = (byte) idx#11 [phi:main::@1->print#0] -- register_copy
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// [9] phi (byte*) print::m#2 = (const byte*) msg2 [phi:main::@1->print#1] -- pbuz1=pbuc1
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lda #<msg2
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sta.z print.m
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lda #>msg2
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sta.z print.m+1
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jsr print
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jmp __breturn
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// main::@return
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__breturn:
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// [8] return
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rts
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}
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// print
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// print(byte* zp(2) m)
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print: {
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.label m = 2
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// [10] *((const nomodify byte*) SCREEN + (byte) idx#10) ← *((byte*) print::m#2 + (byte) 2) -- pbuc1_derefidx_vbuz1=pbuz2_derefidx_vbuc2
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ldx.z idx
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ldy #2
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lda (m),y
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sta SCREEN,x
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// [11] (byte) idx#11 ← ++ (byte) idx#10 -- vbuz1=_inc_vbuz1
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inc.z idx
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jmp __breturn
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// print::@return
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__breturn:
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// [12] return
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rts
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}
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// File Data
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msg1: .byte 'a', 'b', 'c', 'd'
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msg2: .byte '1', '2', '3', '4'
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [10] *((const nomodify byte*) SCREEN + (byte) idx#10) ← *((byte*) print::m#2 + (byte) 2) [ idx#10 ] ( main:2::print:5 [ idx#10 ] { } main:2::print:7 [ idx#10 ] { { idx#10 = idx#11 } } ) always clobbers reg byte a reg byte y
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Removing always clobbered register reg byte a as potential for zp[1]:4 [ idx#10 idx#11 ]
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Removing always clobbered register reg byte y as potential for zp[1]:4 [ idx#10 idx#11 ]
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Statement [10] *((const nomodify byte*) SCREEN + (byte) idx#10) ← *((byte*) print::m#2 + (byte) 2) [ idx#10 ] ( main:2::print:5 [ idx#10 ] { } main:2::print:7 [ idx#10 ] { { idx#10 = idx#11 } } ) always clobbers reg byte a reg byte y
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Potential registers zp[2]:2 [ print::m#2 ] : zp[2]:2 ,
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Potential registers zp[1]:4 [ idx#10 idx#11 ] : zp[1]:4 , reg byte x ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [] 134.5: zp[1]:4 [ idx#10 idx#11 ]
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Uplift Scope [print] 101: zp[2]:2 [ print::m#2 ]
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Uplift Scope [main]
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Uplifting [] best 81 combination reg byte x [ idx#10 idx#11 ]
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Uplifting [print] best 81 combination zp[2]:2 [ print::m#2 ]
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Uplifting [main] best 81 combination
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Tests optimizing derefs of *(ptr+b) to ptr[b]
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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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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// [5] call print
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// [9] phi from main to print [phi:main->print]
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print_from_main:
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// [9] phi (byte) idx#10 = (byte) 0 [phi:main->print#0] -- vbuxx=vbuc1
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ldx #0
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// [9] phi (byte*) print::m#2 = (const byte*) msg1 [phi:main->print#1] -- pbuz1=pbuc1
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lda #<msg1
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sta.z print.m
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lda #>msg1
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sta.z print.m+1
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jsr print
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// [6] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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jmp __b1
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// main::@1
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__b1:
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// [7] call print
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// [9] phi from main::@1 to print [phi:main::@1->print]
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print_from___b1:
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// [9] phi (byte) idx#10 = (byte) idx#11 [phi:main::@1->print#0] -- register_copy
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// [9] phi (byte*) print::m#2 = (const byte*) msg2 [phi:main::@1->print#1] -- pbuz1=pbuc1
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lda #<msg2
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sta.z print.m
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lda #>msg2
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sta.z print.m+1
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jsr print
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jmp __breturn
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// main::@return
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__breturn:
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// [8] return
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rts
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}
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// print
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// print(byte* zp(2) m)
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print: {
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.label m = 2
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// [10] *((const nomodify byte*) SCREEN + (byte) idx#10) ← *((byte*) print::m#2 + (byte) 2) -- pbuc1_derefidx_vbuxx=pbuz1_derefidx_vbuc2
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ldy #2
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lda (m),y
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sta SCREEN,x
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// [11] (byte) idx#11 ← ++ (byte) idx#10 -- vbuxx=_inc_vbuxx
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inx
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jmp __breturn
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// print::@return
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__breturn:
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// [12] return
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rts
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}
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// File Data
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msg1: .byte 'a', 'b', 'c', 'd'
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msg2: .byte '1', '2', '3', '4'
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ASSEMBLER OPTIMIZATIONS
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Removing instruction jmp __b1
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Removing instruction jmp __bend
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Removing instruction jmp __b1
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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 __b1_from___bbegin:
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Removing instruction __b1:
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Removing instruction main_from___b1:
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Removing instruction __bend_from___b1:
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Removing instruction __b1_from_main:
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Removing instruction print_from___b1:
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Succesful ASM optimization Pass5RedundantLabelElimination
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Removing instruction __bbegin:
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Removing instruction __bend:
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Removing instruction print_from_main:
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Removing instruction __b1:
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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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Removing instruction jsr main
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Succesful ASM optimization Pass5SkipBegin
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FINAL SYMBOL TABLE
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(label) @1
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(label) @begin
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(label) @end
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(const nomodify byte*) SCREEN = (byte*) 1024
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(byte) idx
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(byte) idx#10 reg byte x 106.5
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(byte) idx#11 reg byte x 28.0
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(void()) main()
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(label) main::@1
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(label) main::@return
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(const byte*) msg1[] = { (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd' }
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(const byte*) msg2[] = { (byte) '1', (byte) '2', (byte) '3', (byte) '4' }
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(void()) print((byte*) print::m)
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(label) print::@return
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(byte*) print::m
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(byte*) print::m#2 m zp[2]:2 101.0
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zp[2]:2 [ print::m#2 ]
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reg byte x [ idx#10 idx#11 ]
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FINAL ASSEMBLER
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Score: 60
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// File Comments
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// Tests optimizing derefs of *(ptr+b) to ptr[b]
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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// Global Constants & labels
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.label SCREEN = $400
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// @begin
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// [1] phi from @begin to @1 [phi:@begin->@1]
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// @1
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// [2] call main
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// [4] phi from @1 to main [phi:@1->main]
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// [3] phi from @1 to @end [phi:@1->@end]
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// @end
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// main
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main: {
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// print(msg1)
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// [5] call print
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// [9] phi from main to print [phi:main->print]
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// [9] phi (byte) idx#10 = (byte) 0 [phi:main->print#0] -- vbuxx=vbuc1
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ldx #0
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// [9] phi (byte*) print::m#2 = (const byte*) msg1 [phi:main->print#1] -- pbuz1=pbuc1
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lda #<msg1
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sta.z print.m
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lda #>msg1
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sta.z print.m+1
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jsr print
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// [6] phi from main to main::@1 [phi:main->main::@1]
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// main::@1
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// print(msg2)
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// [7] call print
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// [9] phi from main::@1 to print [phi:main::@1->print]
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// [9] phi (byte) idx#10 = (byte) idx#11 [phi:main::@1->print#0] -- register_copy
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// [9] phi (byte*) print::m#2 = (const byte*) msg2 [phi:main::@1->print#1] -- pbuz1=pbuc1
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lda #<msg2
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sta.z print.m
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lda #>msg2
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sta.z print.m+1
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jsr print
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// main::@return
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// }
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// [8] return
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rts
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}
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// print
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// print(byte* zp(2) m)
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print: {
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.label m = 2
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// SCREEN[idx++] = *(m+2)
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// [10] *((const nomodify byte*) SCREEN + (byte) idx#10) ← *((byte*) print::m#2 + (byte) 2) -- pbuc1_derefidx_vbuxx=pbuz1_derefidx_vbuc2
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ldy #2
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lda (m),y
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sta SCREEN,x
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// SCREEN[idx++] = *(m+2);
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// [11] (byte) idx#11 ← ++ (byte) idx#10 -- vbuxx=_inc_vbuxx
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inx
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// print::@return
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// }
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// [12] return
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rts
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}
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// File Data
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msg1: .byte 'a', 'b', 'c', 'd'
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msg2: .byte '1', '2', '3', '4'
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