mirror of
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463 lines
14 KiB
Plaintext
463 lines
14 KiB
Plaintext
Loading link script "call-banked-phi.ld"
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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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plus::a#0 = '0'
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plus::b#0 = 7
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call plus
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plus::return#0 = plus::return#3
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to:main::@1
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main::@1: scope:[main] from main
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plus::return#4 = phi( main/plus::return#0 )
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main::$0 = plus::return#4
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SCREEN[0] = main::$0
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plus::a#1 = '1'
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plus::b#1 = 6
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call plus
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plus::return#1 = plus::return#3
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to:main::@2
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main::@2: scope:[main] from main::@1
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plus::return#5 = phi( main::@1/plus::return#1 )
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main::$1 = plus::return#5
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SCREEN[1] = main::$1
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to:main::@return
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main::@return: scope:[main] from main::@2
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return
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to:@return
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char plus(char a , char b)
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plus: scope:[plus] from main main::@1
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plus::b#2 = phi( main/plus::b#0, main::@1/plus::b#1 )
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plus::a#2 = phi( main/plus::a#0, main::@1/plus::a#1 )
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plus::$0 = plus::a#2 + plus::b#2
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plus::return#2 = plus::$0
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to:plus::@return
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plus::@return: scope:[plus] from plus
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plus::return#6 = phi( plus/plus::return#2 )
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plus::return#3 = plus::return#6
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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 * const SCREEN = (char *)$400
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void __start()
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void main()
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char main::$0
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char main::$1
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char plus(char a , char b)
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char plus::$0
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char plus::a
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char plus::a#0
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char plus::a#1
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char plus::a#2
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char plus::b
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char plus::b#0
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char plus::b#1
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char plus::b#2
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char plus::return
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char plus::return#0
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char plus::return#1
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char plus::return#2
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char plus::return#3
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char plus::return#4
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char plus::return#5
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char plus::return#6
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Adding number conversion cast (unumber) 7 in plus::b#0 = 7
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Adding number conversion cast (unumber) 0 in SCREEN[0] = main::$0
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Adding number conversion cast (unumber) 6 in plus::b#1 = 6
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Adding number conversion cast (unumber) 1 in SCREEN[1] = main::$1
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast plus::b#0 = (unumber)7
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Inlining cast plus::b#1 = (unumber)6
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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 7
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Simplifying constant integer cast 0
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Simplifying constant integer cast 6
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Simplifying constant integer cast 1
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (char) 7
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Finalized unsigned number type (char) 0
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Finalized unsigned number type (char) 6
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Finalized unsigned number type (char) 1
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias plus::return#0 = plus::return#4
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Alias plus::return#1 = plus::return#5
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Alias plus::return#2 = plus::$0 plus::return#6 plus::return#3
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Successful SSA optimization Pass2AliasElimination
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Constant plus::a#0 = '0'
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Constant plus::b#0 = 7
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Constant plus::a#1 = '1'
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Constant plus::b#1 = 6
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Successful SSA optimization Pass2ConstantIdentification
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Simplifying expression containing zero SCREEN in [5] SCREEN[0] = main::$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::@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 plus::a#0
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Inlining constant with var siblings plus::b#0
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Inlining constant with var siblings plus::a#1
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Inlining constant with var siblings plus::b#1
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Constant inlined plus::b#1 = 6
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Constant inlined plus::b#0 = 7
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Constant inlined plus::a#1 = '1'
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Constant inlined plus::a#0 = '0'
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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 plus:1 plus:5
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Created 2 initial phi equivalence classes
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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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[1] call plus
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[2] plus::return#0 = plus::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::$0 = plus::return#0
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[4] *SCREEN = main::$0
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[5] call plus
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[6] plus::return#1 = plus::return#2
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to:main::@2
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main::@2: scope:[main] from main::@1
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[7] main::$1 = plus::return#1
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[8] *(SCREEN+1) = main::$1
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to:main::@return
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main::@return: scope:[main] from main::@2
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[9] return
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to:@return
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char plus(char a , char b)
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plus: scope:[plus] from main main::@1
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[10] plus::b#2 = phi( main/7, main::@1/6 )
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[10] plus::a#2 = phi( main/'0', main::@1/'1' )
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[11] plus::return#2 = plus::a#2 + plus::b#2
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to:plus::@return
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plus::@return: scope:[plus] from plus
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[12] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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void main()
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char main::$0 // 4.0
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char main::$1 // 4.0
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char plus(char a , char b)
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char plus::a
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char plus::a#2 // 11.0
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char plus::b
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char plus::b#2 // 11.0
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char plus::return
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char plus::return#0 // 4.0
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char plus::return#1 // 4.0
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char plus::return#2 // 3.75
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Initial phi equivalence classes
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[ plus::a#2 ]
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[ plus::b#2 ]
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Added variable plus::return#0 to live range equivalence class [ plus::return#0 ]
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Added variable main::$0 to live range equivalence class [ main::$0 ]
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Added variable plus::return#1 to live range equivalence class [ plus::return#1 ]
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Added variable main::$1 to live range equivalence class [ main::$1 ]
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Added variable plus::return#2 to live range equivalence class [ plus::return#2 ]
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Complete equivalence classes
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[ plus::a#2 ]
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[ plus::b#2 ]
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[ plus::return#0 ]
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[ main::$0 ]
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[ plus::return#1 ]
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[ main::$1 ]
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[ plus::return#2 ]
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Allocated zp[1]:2 [ plus::a#2 ]
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Allocated zp[1]:3 [ plus::b#2 ]
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Allocated zp[1]:4 [ plus::return#0 ]
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Allocated zp[1]:5 [ main::$0 ]
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Allocated zp[1]:6 [ plus::return#1 ]
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Allocated zp[1]:7 [ main::$1 ]
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Allocated zp[1]:8 [ plus::return#2 ]
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [11] plus::return#2 = plus::a#2 + plus::b#2 [ plus::return#2 ] ( plus:1 [ plus::return#2 ] { { plus::return#0 = plus::return#2 } } plus:5 [ plus::return#2 ] { { plus::return#1 = plus::return#2 } } ) always clobbers reg byte a
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Potential registers zp[1]:2 [ plus::a#2 ] : zp[1]:2 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:3 [ plus::b#2 ] : zp[1]:3 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:4 [ plus::return#0 ] : zp[1]:4 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:5 [ main::$0 ] : zp[1]:5 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:6 [ plus::return#1 ] : zp[1]:6 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:7 [ main::$1 ] : zp[1]:7 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:8 [ plus::return#2 ] : zp[1]:8 , reg byte a , reg byte x , reg byte y ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [plus] 11: zp[1]:2 [ plus::a#2 ] 11: zp[1]:3 [ plus::b#2 ] 4: zp[1]:4 [ plus::return#0 ] 4: zp[1]:6 [ plus::return#1 ] 3.75: zp[1]:8 [ plus::return#2 ]
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Uplift Scope [main] 4: zp[1]:5 [ main::$0 ] 4: zp[1]:7 [ main::$1 ]
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Uplift Scope []
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Uplifting [plus] best 81 combination reg byte x [ plus::a#2 ] reg byte a [ plus::b#2 ] reg byte a [ plus::return#0 ] reg byte a [ plus::return#1 ] zp[1]:8 [ plus::return#2 ]
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Limited combination testing to 100 combinations of 1024 possible.
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Uplifting [main] best 69 combination reg byte a [ main::$0 ] reg byte a [ main::$1 ]
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Uplifting [] best 69 combination
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Attempting to uplift remaining variables inzp[1]:8 [ plus::return#2 ]
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Uplifting [plus] best 60 combination reg byte a [ plus::return#2 ]
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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/**
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* @file call-banked-phi-case-1-near-0.c
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* @author Sven Van de Velde (sven.van.de.velde@telenet.be)
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* @author Jesper Gravgaard
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* @brief Test a procedure with calling convention PHI - case #1.
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* @version 0.1
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* @date 2023-04-11
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*
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* @copyright Copyright (c) 2023
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*
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* The following cases exist in banked calling implementations:
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*
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* - case #1 - unbanked to unbanked and no banking areas
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* - case #2 - unbanked to banked to any bank area
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* - case #3 - banked to unbanked from any bank area
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* - case #4 - banked to same bank in same bank area
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* - case #5 - banked to different bank in same bank area
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* - case #6 - banked to any bank between different bank areas
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*
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* This brings us to the call types:
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*
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* - near = case #1, #3, #4
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* - close = case #2, #6
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* - far = case #5
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*
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*/
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// Upstart
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.file [name="call-banked-phi-case-1-near-0.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=$80d]
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.segmentdef Data [startAfter="Code"]
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.segmentdef RAM_Bank1 [start=$A000, min=$A000, max=$BFFF, align=$100]
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.segmentdef RAM_Bank2 [start=$A000, min=$A000, max=$BFFF, align=$100]
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.segmentdef ROM_Bank1 [start=$C000, min=$C000, max=$FFFF, align=$100]
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.segment Basic
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:BasicUpstart(main)
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.segment Code
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.segment Data
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// Global Constants & labels
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.label SCREEN = $400
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.segment Code
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// main
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main: {
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// [1] call plus
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// [10] phi from main to plus [phi:main->plus]
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plus_from_main:
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// [10] phi plus::b#2 = 7 [phi:main->plus#0] -- vbuaa=vbuc1
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lda #7
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// [10] phi plus::a#2 = '0' [phi:main->plus#1] -- vbuxx=vbuc1
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ldx #'0'
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jsr plus
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// [2] plus::return#0 = plus::return#2
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jmp __b1
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// main::@1
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__b1:
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// [3] main::$0 = plus::return#0
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// [4] *SCREEN = main::$0 -- _deref_pbuc1=vbuaa
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sta SCREEN
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// [5] call plus
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// [10] phi from main::@1 to plus [phi:main::@1->plus]
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plus_from___b1:
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// [10] phi plus::b#2 = 6 [phi:main::@1->plus#0] -- vbuaa=vbuc1
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lda #6
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// [10] phi plus::a#2 = '1' [phi:main::@1->plus#1] -- vbuxx=vbuc1
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ldx #'1'
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jsr plus
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// [6] plus::return#1 = plus::return#2
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jmp __b2
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// main::@2
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__b2:
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// [7] main::$1 = plus::return#1
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// [8] *(SCREEN+1) = main::$1 -- _deref_pbuc1=vbuaa
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// near call
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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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// [9] return
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rts
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}
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// plus
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// __register(A) char plus(__register(X) char a, __register(A) char b)
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plus: {
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// [11] plus::return#2 = plus::a#2 + plus::b#2 -- vbuaa=vbuxx_plus_vbuaa
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stx.z $ff
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clc
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adc.z $ff
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jmp __breturn
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// plus::@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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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 plus_from_main:
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Removing instruction __b1:
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Removing instruction plus_from___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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void main()
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char main::$0 // reg byte a 4.0
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char main::$1 // reg byte a 4.0
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char plus(char a , char b)
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char plus::a
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char plus::a#2 // reg byte x 11.0
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char plus::b
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char plus::b#2 // reg byte a 11.0
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char plus::return
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char plus::return#0 // reg byte a 4.0
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char plus::return#1 // reg byte a 4.0
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char plus::return#2 // reg byte a 3.75
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reg byte x [ plus::a#2 ]
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reg byte a [ plus::b#2 ]
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reg byte a [ plus::return#0 ]
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reg byte a [ main::$0 ]
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reg byte a [ plus::return#1 ]
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reg byte a [ main::$1 ]
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reg byte a [ plus::return#2 ]
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FINAL ASSEMBLER
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Score: 48
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// File Comments
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/**
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* @file call-banked-phi-case-1-near-0.c
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* @author Sven Van de Velde (sven.van.de.velde@telenet.be)
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* @author Jesper Gravgaard
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* @brief Test a procedure with calling convention PHI - case #1.
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* @version 0.1
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* @date 2023-04-11
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*
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* @copyright Copyright (c) 2023
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*
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* The following cases exist in banked calling implementations:
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*
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* - case #1 - unbanked to unbanked and no banking areas
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* - case #2 - unbanked to banked to any bank area
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* - case #3 - banked to unbanked from any bank area
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* - case #4 - banked to same bank in same bank area
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* - case #5 - banked to different bank in same bank area
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* - case #6 - banked to any bank between different bank areas
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*
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* This brings us to the call types:
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*
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* - near = case #1, #3, #4
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* - close = case #2, #6
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* - far = case #5
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*
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*/
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// Upstart
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.file [name="call-banked-phi-case-1-near-0.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=$80d]
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.segmentdef Data [startAfter="Code"]
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.segmentdef RAM_Bank1 [start=$A000, min=$A000, max=$BFFF, align=$100]
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.segmentdef RAM_Bank2 [start=$A000, min=$A000, max=$BFFF, align=$100]
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.segmentdef ROM_Bank1 [start=$C000, min=$C000, max=$FFFF, align=$100]
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.segment Basic
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:BasicUpstart(main)
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.segment Code
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.segment Data
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// Global Constants & labels
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.label SCREEN = $400
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.segment Code
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// main
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main: {
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// plus('0', 7)
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// [1] call plus
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// [10] phi from main to plus [phi:main->plus]
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// [10] phi plus::b#2 = 7 [phi:main->plus#0] -- vbuaa=vbuc1
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lda #7
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// [10] phi plus::a#2 = '0' [phi:main->plus#1] -- vbuxx=vbuc1
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ldx #'0'
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jsr plus
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// plus('0', 7)
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// [2] plus::return#0 = plus::return#2
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// main::@1
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// [3] main::$0 = plus::return#0
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// SCREEN[0] = plus('0', 7)
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// [4] *SCREEN = main::$0 -- _deref_pbuc1=vbuaa
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sta SCREEN
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// plus('1', 6)
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// [5] call plus
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// [10] phi from main::@1 to plus [phi:main::@1->plus]
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// [10] phi plus::b#2 = 6 [phi:main::@1->plus#0] -- vbuaa=vbuc1
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lda #6
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// [10] phi plus::a#2 = '1' [phi:main::@1->plus#1] -- vbuxx=vbuc1
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ldx #'1'
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jsr plus
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// plus('1', 6)
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// [6] plus::return#1 = plus::return#2
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// main::@2
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// [7] main::$1 = plus::return#1
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// SCREEN[1] = plus('1', 6)
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// [8] *(SCREEN+1) = main::$1 -- _deref_pbuc1=vbuaa
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// near call
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sta SCREEN+1
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// main::@return
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// }
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// [9] return
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rts
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}
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// plus
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// __register(A) char plus(__register(X) char a, __register(A) char b)
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plus: {
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// a+b
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// [11] plus::return#2 = plus::a#2 + plus::b#2 -- vbuaa=vbuxx_plus_vbuaa
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stx.z $ff
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clc
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|
adc.z $ff
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// plus::@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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|