mirror of
https://gitlab.com/camelot/kickc.git
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266 lines
7.0 KiB
Plaintext
266 lines
7.0 KiB
Plaintext
Identified constant variable (byte*) main::SCREEN
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Culled Empty Block (label) main::@4
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Culled Empty Block (label) main::@5
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Culled Empty Block (label) main::@6
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Culled Empty Block (label) main::@8
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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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main: scope:[main] from @1
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(byte*) main::SCREEN#0 ← ((byte*)) (number) $400
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to:main::@1
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main::@1: scope:[main] from main main::@2
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if(true) 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::SCREEN#0) ← ++ *((byte*) main::SCREEN#0)
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to:main::@1
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main::@3: scope:[main] from main::@1
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(byte) main::line#0 ← (byte) 0
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to:main::@7
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main::@7: scope:[main] from main::@3 main::@7
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(byte) main::line#2 ← phi( main::@3/(byte) main::line#0 main::@7/(byte) main::line#1 )
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*((byte*) main::SCREEN#0 + (byte) main::line#2) ← (byte) main::line#2
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(byte) main::line#1 ← (byte) main::line#2 + rangenext(0,$18)
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(bool~) main::$1 ← (byte) main::line#1 != rangelast(0,$18)
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if((bool~) main::$1) goto main::@7
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to:main::@return
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main::@return: scope:[main] from main::@7
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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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(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::@7
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(label) main::@return
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(byte*) main::SCREEN
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(byte*) main::SCREEN#0
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(byte) main::line
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(byte) main::line#0
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(byte) main::line#1
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(byte) main::line#2
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Inlining cast (byte*) main::SCREEN#0 ← (byte*)(number) $400
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Successful SSA optimization Pass2InlineCast
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Simplifying constant pointer cast (byte*) 1024
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Successful SSA optimization PassNCastSimplification
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Simple Condition (bool~) main::$1 [8] if((byte) main::line#1!=rangelast(0,$18)) goto main::@7
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const byte*) main::SCREEN#0 = (byte*) 1024
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Constant (const byte) main::line#0 = 0
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Successful SSA optimization Pass2ConstantIdentification
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if() condition always true - replacing block destination [1] if(true) goto main::@2
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Successful SSA optimization Pass2ConstantIfs
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Resolved ranged next value [6] main::line#1 ← ++ main::line#2 to ++
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Resolved ranged comparison value [8] if(main::line#1!=rangelast(0,$18)) goto main::@7 to (number) $19
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Eliminating variable (byte) main::line#2 from unused block main::@7
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Eliminating variable (byte) main::line#1 from unused block main::@7
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Removing PHI-reference to removed block (main::@3) in block main::@7
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Removing unused block main::@3
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Removing unused block main::@7
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Removing unused block main::@return
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Successful SSA optimization Pass2EliminateUnusedBlocks
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Eliminating unused constant (const byte) main::line#0
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Successful SSA optimization PassNEliminateUnusedVars
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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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Adding NOP phi() at start of main::@1
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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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Culled Empty Block (label) main::@1
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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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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::@1
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[5] *((const byte*) main::SCREEN#0) ← ++ *((const byte*) main::SCREEN#0)
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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::SCREEN
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(byte) main::line
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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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// Problem with eliminating unused blocks/vars after the infinite loop (symbol line#2 not removed from symbol table)
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(bbegin)
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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 byte*) main::SCREEN#0) ← ++ *((const byte*) main::SCREEN#0) -- _deref_pbuc1=_inc__deref_pbuc1
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inc SCREEN
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jmp b1
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}
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// File Data
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REGISTER UPLIFT POTENTIAL REGISTERS
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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 132 combination
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Uplifting [] best 132 combination
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Problem with eliminating unused blocks/vars after the infinite loop (symbol line#2 not removed from symbol table)
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// Upstart
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.pc = $801 "Basic"
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:BasicUpstart(bbegin)
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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 byte*) main::SCREEN#0) ← ++ *((const byte*) main::SCREEN#0) -- _deref_pbuc1=_inc__deref_pbuc1
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inc SCREEN
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jmp b1
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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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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 bend:
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Succesful ASM optimization Pass5UnusedLabelElimination
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Updating BasicUpstart to call main directly
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Removing instruction jsr main
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Succesful ASM optimization Pass5SkipBegin
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Removing instruction bbegin:
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Succesful ASM optimization Pass5UnusedLabelElimination
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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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(byte*) main::SCREEN
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(const byte*) main::SCREEN#0 SCREEN = (byte*) 1024
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(byte) main::line
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FINAL ASSEMBLER
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Score: 90
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// File Comments
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// Problem with eliminating unused blocks/vars after the infinite loop (symbol line#2 not removed from symbol table)
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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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b1:
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// (*SCREEN)++;
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// [5] *((const byte*) main::SCREEN#0) ← ++ *((const byte*) main::SCREEN#0) -- _deref_pbuc1=_inc__deref_pbuc1
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inc SCREEN
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jmp b1
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}
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// File Data
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