mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-09-29 03:56:15 +00:00
391 lines
11 KiB
Plaintext
391 lines
11 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 @1
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(byte) main::b#0 ← (byte) 0
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to:main::@1
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main::@1: scope:[main] from main main::@2
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(byte) main::b#2 ← phi( main/(byte) main::b#0 main::@2/(byte) main::b#1 )
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(bool~) main::$1 ← *((const to_nomodify byte*) str + (byte) main::b#2) != (number) 0
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if((bool~) main::$1) goto main::@2
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to:main::@3
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main::@2: scope:[main] from main::@1
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(byte) main::b#3 ← phi( main::@1/(byte) main::b#2 )
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(byte) main::b#1 ← ++ (byte) main::b#3
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to:main::@1
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main::@3: scope:[main] from main::@1
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(byte) main::b#4 ← phi( main::@1/(byte) main::b#2 )
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(byte~) main::$0 ← (byte) '0' + (byte) main::b#4
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*((const nomodify byte*) SCREEN + (number) 0) ← (byte~) main::$0
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to:main::@return
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main::@return: scope:[main] from main::@3
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return
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to:@return
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@1: scope:[] from @begin
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call main
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to:@2
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@2: scope:[] from @1
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to:@end
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@end: scope:[] from @2
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SYMBOL TABLE SSA
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(label) @1
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(label) @2
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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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(void()) main()
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(byte~) main::$0
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(bool~) main::$1
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(label) main::@1
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(label) main::@2
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(label) main::@3
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(label) main::@return
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(byte) main::b
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(byte) main::b#0
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(byte) main::b#1
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(byte) main::b#2
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(byte) main::b#3
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(byte) main::b#4
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(const to_nomodify byte*) str[] = (byte*) "Hello!"
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Adding number conversion cast (unumber) 0 in (bool~) main::$1 ← *((const to_nomodify byte*) str + (byte) main::b#2) != (number) 0
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Adding number conversion cast (unumber) 0 in *((const nomodify byte*) SCREEN + (number) 0) ← (byte~) main::$0
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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 0
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Simplifying constant integer cast 0
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 0
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Finalized unsigned number type (byte) 0
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias main::b#2 = main::b#3 main::b#4
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Successful SSA optimization Pass2AliasElimination
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Simple Condition (bool~) main::$1 [3] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const byte) main::b#0 = 0
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Successful SSA optimization Pass2ConstantIdentification
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Simplifying expression containing zero SCREEN in [6] *((const nomodify byte*) SCREEN + (byte) 0) ← (byte~) main::$0
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Successful SSA optimization PassNSimplifyExpressionWithZero
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Inlining constant with var siblings (const byte) main::b#0
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Constant inlined main::b#0 = (byte) 0
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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 @end
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Adding NOP phi() at start of main
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CALL GRAPH
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Calls in [] to main:2
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Created 1 initial phi equivalence classes
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Coalesced [12] main::b#5 ← main::b#1
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Coalesced down to 1 phi equivalence classes
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Culled Empty Block (label) @2
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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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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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to:main::@1
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main::@1: scope:[main] from main main::@2
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[5] (byte) main::b#2 ← phi( main/(byte) 0 main::@2/(byte) main::b#1 )
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[6] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@1
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[7] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2
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[8] *((const nomodify byte*) SCREEN) ← (byte~) main::$0
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to:main::@return
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main::@return: scope:[main] from main::@3
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[9] return
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to:@return
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main::@2: scope:[main] from main::@1
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[10] (byte) main::b#1 ← ++ (byte) main::b#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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(byte~) main::$0 22.0
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(byte) main::b
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(byte) main::b#1 202.0
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(byte) main::b#2 157.0
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Initial phi equivalence classes
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[ main::b#2 main::b#1 ]
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Added variable main::$0 to live range equivalence class [ main::$0 ]
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Complete equivalence classes
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[ main::b#2 main::b#1 ]
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[ main::$0 ]
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Allocated zp[1]:2 [ main::b#2 main::b#1 ]
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Allocated zp[1]:3 [ main::$0 ]
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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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// Test a for-loop with an empty body
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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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.label __0 = 3
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.label b = 2
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// [5] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [5] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1
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lda #0
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sta.z b
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jmp __b1
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// main::@1
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__b1:
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// [6] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuz1_neq_0_then_la1
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ldy.z b
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lda str,y
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cmp #0
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bne __b2
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jmp __b3
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// main::@3
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__b3:
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// [7] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 -- vbuz1=vbuc1_plus_vbuz2
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lax.z b
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axs #-['0']
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stx.z __0
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// [8] *((const nomodify byte*) SCREEN) ← (byte~) main::$0 -- _deref_pbuc1=vbuz1
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// Empty body
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lda.z __0
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sta SCREEN
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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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// main::@2
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__b2:
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// [10] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuz1=_inc_vbuz1
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inc.z b
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// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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__b1_from___b2:
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// [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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}
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// File Data
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str: .text "Hello!"
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.byte 0
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [6] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 [ main::b#2 ] ( main:2 [ main::b#2 ] { } ) always clobbers reg byte a
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Removing always clobbered register reg byte a as potential for zp[1]:2 [ main::b#2 main::b#1 ]
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Statement [7] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 [ main::$0 ] ( main:2 [ main::$0 ] { } ) always clobbers reg byte a
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Statement [6] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 [ main::b#2 ] ( main:2 [ main::b#2 ] { } ) always clobbers reg byte a
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Statement [7] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 [ main::$0 ] ( main:2 [ main::$0 ] { } ) always clobbers reg byte a
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Potential registers zp[1]:2 [ main::b#2 main::b#1 ] : zp[1]:2 , reg byte x , reg byte y ,
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Potential registers zp[1]:3 [ main::$0 ] : zp[1]:3 , reg byte a , reg byte x , reg byte y ,
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REGISTER UPLIFT SCOPES
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Uplift Scope [main] 359: zp[1]:2 [ main::b#2 main::b#1 ] 22: zp[1]:3 [ main::$0 ]
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Uplift Scope []
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Uplifting [main] best 249 combination reg byte x [ main::b#2 main::b#1 ] reg byte x [ main::$0 ]
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Uplifting [] best 249 combination
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Test a for-loop with an empty body
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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] phi from main to main::@1 [phi:main->main::@1]
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__b1_from_main:
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// [5] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
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ldx #0
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jmp __b1
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// main::@1
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__b1:
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// [6] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_neq_0_then_la1
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lda str,x
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cmp #0
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bne __b2
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jmp __b3
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// main::@3
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__b3:
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// [7] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 -- vbuxx=vbuc1_plus_vbuxx
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txa
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axs #-['0']
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// [8] *((const nomodify byte*) SCREEN) ← (byte~) main::$0 -- _deref_pbuc1=vbuxx
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// Empty body
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stx SCREEN
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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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// main::@2
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__b2:
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// [10] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuxx=_inc_vbuxx
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inx
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// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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__b1_from___b2:
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// [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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}
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// File Data
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str: .text "Hello!"
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.byte 0
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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 __b3
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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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Succesful ASM optimization Pass5RedundantLabelElimination
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Removing instruction __bbegin:
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Removing instruction __bend:
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Removing instruction __b1_from_main:
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Removing instruction __b3:
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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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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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(void()) main()
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(byte~) main::$0 reg byte x 22.0
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(label) main::@1
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(label) main::@2
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(label) main::@3
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(label) main::@return
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(byte) main::b
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(byte) main::b#1 reg byte x 202.0
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(byte) main::b#2 reg byte x 157.0
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(const to_nomodify byte*) str[] = (byte*) "Hello!"
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reg byte x [ main::b#2 main::b#1 ]
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reg byte x [ main::$0 ]
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FINAL ASSEMBLER
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Score: 174
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// File Comments
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// Test a for-loop with an empty body
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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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// [5] phi from main to main::@1 [phi:main->main::@1]
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// [5] phi (byte) main::b#2 = (byte) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1
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ldx #0
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// main::@1
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__b1:
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// for (; str[b] != 0; ++b)
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// [6] if(*((const to_nomodify byte*) str + (byte) main::b#2)!=(byte) 0) goto main::@2 -- pbuc1_derefidx_vbuxx_neq_0_then_la1
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lda str,x
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cmp #0
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bne __b2
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// main::@3
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// '0'+b
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// [7] (byte~) main::$0 ← (byte) '0' + (byte) main::b#2 -- vbuxx=vbuc1_plus_vbuxx
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txa
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axs #-['0']
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// SCREEN[0] = '0'+b
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// [8] *((const nomodify byte*) SCREEN) ← (byte~) main::$0 -- _deref_pbuc1=vbuxx
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// Empty body
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stx SCREEN
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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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// main::@2
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__b2:
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// for (; str[b] != 0; ++b)
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// [10] (byte) main::b#1 ← ++ (byte) main::b#2 -- vbuxx=_inc_vbuxx
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inx
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// [5] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
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// [5] phi (byte) main::b#2 = (byte) main::b#1 [phi:main::@2->main::@1#0] -- register_copy
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jmp __b1
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}
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// File Data
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str: .text "Hello!"
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.byte 0
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