mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-10-02 22:56:11 +00:00
375 lines
8.5 KiB
Plaintext
375 lines
8.5 KiB
Plaintext
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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(byte*) STACK ← ((byte*)) (number) $103
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to:@1
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(void()) main()
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main: scope:[main] from @2
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asm { lda#'1' pha lda#'2' pha lda#'3' pha }
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call peek_stack
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to:main::@1
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main::@1: scope:[main] from main
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asm { pla pla pla }
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to:main::@return
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main::@return: scope:[main] from main::@1
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return
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to:@return
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@1: scope:[] from @begin
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(byte*) SCREEN ← ((byte*)) (number) $400
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to:@2
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(void()) peek_stack()
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peek_stack: scope:[peek_stack] from main
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asm { tsx ldaSTACK,x staSCREEN ldaSTACK+1,x staSCREEN+1 ldaSTACK+2,x staSCREEN+2 }
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to:peek_stack::@return
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peek_stack::@return: scope:[peek_stack] from peek_stack
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return
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to:@return
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@2: scope:[] from @1
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call main
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to:@3
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@3: scope:[] from @2
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to:@end
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@end: scope:[] from @3
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SYMBOL TABLE SSA
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(label) @1
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(label) @2
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(label) @3
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(label) @begin
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(label) @end
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(byte*) SCREEN
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(byte*) STACK
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(void()) main()
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(label) main::@1
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(label) main::@return
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(void()) peek_stack()
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(label) peek_stack::@return
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Inlining cast (byte*) STACK ← (byte*)(number) $103
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Inlining cast (byte*) SCREEN ← (byte*)(number) $400
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Successful SSA optimization Pass2InlineCast
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Simplifying constant pointer cast (byte*) 259
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Simplifying constant pointer cast (byte*) 1024
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Successful SSA optimization PassNCastSimplification
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Constant (const byte*) STACK = (byte*) 259
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Constant (const byte*) SCREEN = (byte*) 1024
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Successful SSA optimization Pass2ConstantIdentification
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @2
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Adding NOP phi() at start of @3
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Adding NOP phi() at start of @end
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CALL GRAPH
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Calls in [] to main:3
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Calls in [main] to peek_stack:7
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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) @1
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Culled Empty Block (label) @3
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Renumbering block @2 to @1
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @end
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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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asm { lda#'1' pha lda#'2' pha lda#'3' pha }
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[5] call peek_stack
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to:main::@1
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main::@1: scope:[main] from main
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asm { pla pla pla }
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to:main::@return
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main::@return: scope:[main] from main::@1
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[7] return
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to:@return
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(void()) peek_stack()
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peek_stack: scope:[peek_stack] from main
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asm { tsx ldaSTACK,x staSCREEN ldaSTACK+1,x staSCREEN+1 ldaSTACK+2,x staSCREEN+2 }
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to:peek_stack::@return
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peek_stack::@return: scope:[peek_stack] from peek_stack
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[9] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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(void()) main()
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(void()) peek_stack()
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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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// Test stack-relative addressing (for passing parameters through the stack)
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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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/** The hardware stack. The offset 3 is to skip the return address and the fact that the pointer is to the next free position. */
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.label STACK = $103
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/** The screen. */
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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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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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// asm { lda#'1' pha lda#'2' pha lda#'3' pha }
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// Push a few values to the stack
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lda #'1'
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pha
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lda #'2'
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pha
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lda #'3'
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pha
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// [5] call peek_stack
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jsr peek_stack
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jmp __b1
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// main::@1
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__b1:
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// asm { pla pla pla }
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// Clean up the stack
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pla
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pla
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pla
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jmp __breturn
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// main::@return
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__breturn:
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// [7] return
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rts
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}
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// peek_stack
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// Peek values from the stack using stack-relative addressing
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peek_stack: {
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// asm { tsx ldaSTACK,x staSCREEN ldaSTACK+1,x staSCREEN+1 ldaSTACK+2,x staSCREEN+2 }
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tsx
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lda STACK,x
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sta SCREEN
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lda STACK+1,x
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sta SCREEN+1
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lda STACK+2,x
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sta SCREEN+2
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jmp __breturn
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// peek_stack::@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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// File Data
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement asm { lda#'1' pha lda#'2' pha lda#'3' pha } always clobbers reg byte a
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Statement asm { pla pla pla } always clobbers reg byte a
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Statement asm { tsx ldaSTACK,x staSCREEN ldaSTACK+1,x staSCREEN+1 ldaSTACK+2,x staSCREEN+2 } always clobbers reg byte a reg byte x
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REGISTER UPLIFT SCOPES
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Uplift Scope [main]
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Uplift Scope [peek_stack]
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Uplift Scope []
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Uplifting [main] best 93 combination
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Uplifting [peek_stack] best 93 combination
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Uplifting [] best 93 combination
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// Test stack-relative addressing (for passing parameters through the stack)
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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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/** The hardware stack. The offset 3 is to skip the return address and the fact that the pointer is to the next free position. */
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.label STACK = $103
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/** The screen. */
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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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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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// asm { lda#'1' pha lda#'2' pha lda#'3' pha }
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// Push a few values to the stack
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lda #'1'
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pha
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lda #'2'
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pha
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lda #'3'
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pha
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// [5] call peek_stack
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jsr peek_stack
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jmp __b1
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// main::@1
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__b1:
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// asm { pla pla pla }
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// Clean up the stack
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pla
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pla
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pla
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jmp __breturn
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// main::@return
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__breturn:
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// [7] return
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rts
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}
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// peek_stack
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// Peek values from the stack using stack-relative addressing
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peek_stack: {
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// asm { tsx ldaSTACK,x staSCREEN ldaSTACK+1,x staSCREEN+1 ldaSTACK+2,x staSCREEN+2 }
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tsx
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lda STACK,x
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sta SCREEN
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lda STACK+1,x
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sta SCREEN+1
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lda STACK+2,x
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sta SCREEN+2
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jmp __breturn
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// peek_stack::@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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// 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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Removing instruction jmp __breturn
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Succesful ASM optimization Pass5NextJumpElimination
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Replacing label __bbegin with __b1
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Removing instruction __bbegin:
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Removing instruction __b1_from___bbegin:
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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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Removing instruction __b1:
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Removing instruction __breturn:
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Removing instruction __breturn:
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Succesful ASM optimization Pass5UnusedLabelElimination
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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 __b1:
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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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(const byte*) SCREEN SCREEN = (byte*) 1024
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(const byte*) STACK STACK = (byte*) 259
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(void()) main()
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(label) main::@1
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(label) main::@return
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(void()) peek_stack()
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(label) peek_stack::@return
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FINAL ASSEMBLER
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Score: 72
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// File Comments
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// Test stack-relative addressing (for passing parameters through the stack)
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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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/** The hardware stack. The offset 3 is to skip the return address and the fact that the pointer is to the next free position. */
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.label STACK = $103
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/** The screen. */
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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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// [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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// asm
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// asm { lda#'1' pha lda#'2' pha lda#'3' pha }
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// Push a few values to the stack
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lda #'1'
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pha
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lda #'2'
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pha
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lda #'3'
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pha
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// peek_stack()
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// [5] call peek_stack
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jsr peek_stack
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// main::@1
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// asm
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// asm { pla pla pla }
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// Clean up the stack
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pla
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pla
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pla
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// main::@return
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// }
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// [7] return
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rts
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}
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// peek_stack
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// Peek values from the stack using stack-relative addressing
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peek_stack: {
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// asm
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// asm { tsx ldaSTACK,x staSCREEN ldaSTACK+1,x staSCREEN+1 ldaSTACK+2,x staSCREEN+2 }
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tsx
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lda STACK,x
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sta SCREEN
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lda STACK+1,x
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sta SCREEN+1
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lda STACK+2,x
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sta SCREEN+2
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// peek_stack::@return
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// }
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// [9] return
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rts
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}
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// File Data
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