mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-09-29 03:56:15 +00:00
255 lines
6.2 KiB
Plaintext
255 lines
6.2 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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if((number) 7<(number) 4) goto main::@1
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to:main::@2
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main::@1: scope:[main] from main
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*((const nomodify byte*) main::SCREEN + (number) 0) ← (byte) '*'
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to:main::@return
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main::@2: scope:[main] from main
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*((const nomodify byte*) main::SCREEN + (number) 0) ← (byte) '!'
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to:main::@return
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main::@return: scope:[main] from main::@1 main::@2
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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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(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 nomodify byte*) main::SCREEN = (byte*)(number) $400
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Adding number conversion cast (unumber) 0 in *((const nomodify byte*) main::SCREEN + (number) 0) ← (byte) '*'
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Adding number conversion cast (unumber) 0 in *((const nomodify byte*) main::SCREEN + (number) 0) ← (byte) '!'
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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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if() condition always false - eliminating [0] if((number) 7<(number) 4) goto main::@1
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Successful SSA optimization Pass2ConstantIfs
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Simplifying expression containing zero main::SCREEN in [1] *((const nomodify byte*) main::SCREEN + (byte) 0) ← (byte) '*'
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Simplifying expression containing zero main::SCREEN in [2] *((const nomodify byte*) main::SCREEN + (byte) 0) ← (byte) '!'
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Successful SSA optimization PassNSimplifyExpressionWithZero
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Removing unused block main::@1
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Successful SSA optimization Pass2EliminateUnusedBlocks
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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 0 initial phi equivalence classes
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Coalesced down to 0 phi equivalence classes
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Culled Empty Block (label) @2
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Renumbering block main::@2 to main::@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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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
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[5] *((const nomodify byte*) main::SCREEN) ← (byte) '!'
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to:main::@return
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main::@return: scope:[main] from main::@1
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[6] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(void()) main()
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Initial phi equivalence classes
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Complete equivalence classes
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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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// Ensure that if()'s with constant comparisons are identified and eliminated
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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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// @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 SCREEN = $400
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jmp __b1
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// main::@1
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__b1:
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// [5] *((const nomodify byte*) main::SCREEN) ← (byte) '!' -- _deref_pbuc1=vbuc2
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lda #'!'
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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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// [6] return
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rts
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}
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// File Data
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [5] *((const nomodify byte*) main::SCREEN) ← (byte) '!' [ ] ( main:2 [ ] { } ) always clobbers reg byte a
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REGISTER UPLIFT SCOPES
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Uplift Scope [main]
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Uplift Scope []
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Uplifting [main] best 57 combination
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Uplifting [] best 57 combination
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Ensure that if()'s with constant comparisons are identified and eliminated
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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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// @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 SCREEN = $400
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jmp __b1
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// main::@1
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__b1:
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// [5] *((const nomodify byte*) main::SCREEN) ← (byte) '!' -- _deref_pbuc1=vbuc2
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lda #'!'
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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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// [6] 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 __bend
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Removing instruction jmp __b1
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Removing instruction jmp __breturn
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Succesful ASM optimization Pass5NextJumpElimination
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Removing instruction __b1_from___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:
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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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(void()) main()
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(label) main::@1
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(label) main::@return
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(const nomodify byte*) main::SCREEN = (byte*) 1024
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FINAL ASSEMBLER
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Score: 12
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// File Comments
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// Ensure that if()'s with constant comparisons are identified and eliminated
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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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// @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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.label SCREEN = $400
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// main::@1
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// SCREEN[0] = '!'
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// [5] *((const nomodify byte*) main::SCREEN) ← (byte) '!' -- _deref_pbuc1=vbuc2
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lda #'!'
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sta SCREEN
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// main::@return
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// }
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// [6] return
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rts
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}
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// File Data
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