kickc/src/test/ref/kc-ka-string-encoding.log

Culled Empty Block (label) main::@1

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  (byte[]) strTemp#0 ← (const string) $0
  to:@1
main: scope:[main]  from @1
  *((byte[]) strTemp#0 + (number) 2) ← (byte) 'e'pm
  *((byte[]) strTemp#0 + (number) 3) ← (number) 0
  asm { ldy#0 loop: ldastrTemp,y beqdone jsr$FFD2 iny jmploop done:  }
  (signed word) main::return#0 ← (number) 0
  to:main::@return
main::@return: scope:[main]  from main
  (signed word) main::return#3 ← phi( main/(signed word) main::return#0 )
  (signed word) main::return#1 ← (signed word) main::return#3
  return 
  to:@return
@1: scope:[]  from @begin
  call main 
  (signed word) main::return#2 ← (signed word) main::return#1
  to:@2
@2: scope:[]  from @1
  to:@end
@end: scope:[]  from @2

SYMBOL TABLE SSA
(const string) $0 = (string) "v=X"pm
(label) @1
(label) @2
(label) @begin
(label) @end
(signed word()) main()
(label) main::@return
(signed word) main::return
(signed word) main::return#0
(signed word) main::return#1
(signed word) main::return#2
(signed word) main::return#3
(byte[]) strTemp
(byte[]) strTemp#0

Adding number conversion cast (unumber) 2 in *((byte[]) strTemp#0 + (number) 2) ← (byte) 'e'pm
Adding number conversion cast (unumber) 0 in *((byte[]) strTemp#0 + (number) 3) ← (number) 0
Adding number conversion cast (unumber) 3 in *((byte[]) strTemp#0 + (number) 3) ← ((unumber)) (number) 0
Adding number conversion cast (snumber) 0 in (signed word) main::return#0 ← (number) 0
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast *((byte[]) strTemp#0 + (unumber)(number) 3) ← (unumber)(number) 0
Inlining cast (signed word) main::return#0 ← (snumber)(number) 0
Successful SSA optimization Pass2InlineCast
Simplifying constant integer cast 2
Simplifying constant integer cast 0
Simplifying constant integer cast 3
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 2
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 3
Finalized signed number type (signed byte) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias (signed word) main::return#0 = (signed word) main::return#3 (signed word) main::return#1 
Successful SSA optimization Pass2AliasElimination
Constant (const byte[]) strTemp#0 = $0
Constant (const signed word) main::return#0 = 0
Successful SSA optimization Pass2ConstantIdentification
Constant (const signed word) main::return#2 = main::return#0
Successful SSA optimization Pass2ConstantIdentification
Eliminating unused constant (const signed word) main::return#2
Successful SSA optimization PassNEliminateUnusedVars
Eliminating unused constant (const signed word) main::return#0
Successful SSA optimization PassNEliminateUnusedVars
Constant inlined $0 = (const byte[]) strTemp#0
Successful SSA optimization Pass2ConstantInlining
Consolidated array index constant in *(strTemp#0+2)
Consolidated array index constant in *(strTemp#0+3)
Successful SSA optimization Pass2ConstantAdditionElimination
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @2
Adding NOP phi() at start of @end
CALL GRAPH
Calls in [] to main:2 

Created 0 initial phi equivalence classes
Coalesced down to 0 phi equivalence classes
Culled Empty Block (label) @2
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @end

FINAL CONTROL FLOW GRAPH
@begin: scope:[]  from
  [0] phi()
  to:@1
@1: scope:[]  from @begin
  [1] phi()
  [2] call main 
  to:@end
@end: scope:[]  from @1
  [3] phi()
main: scope:[main]  from @1
  [4] *((const byte[]) strTemp#0+(byte) 2) ← (byte) 'e'pm
  [5] *((const byte[]) strTemp#0+(byte) 3) ← (byte) 0
  asm { ldy#0 loop: ldastrTemp,y beqdone jsr$FFD2 iny jmploop done:  }
  to:main::@return
main::@return: scope:[main]  from main
  [7] return 
  to:@return


VARIABLE REGISTER WEIGHTS
(signed word()) main()
(signed word) main::return
(byte[]) strTemp

Initial phi equivalence classes
Complete equivalence classes

INITIAL ASM
Target platform is c64basic
  // File Comments
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  // @begin
bbegin:
  // [1] phi from @begin to @1 [phi:@begin->@1]
b1_from_bbegin:
  jmp b1
  // @1
b1:
  // [2] call main 
  jsr main
  // [3] phi from @1 to @end [phi:@1->@end]
bend_from_b1:
  jmp bend
  // @end
bend:
  // main
main: {
    // [4] *((const byte[]) strTemp#0+(byte) 2) ← (byte) 'e'pm -- _deref_pbuc1=vbuc2 
  .encoding "petscii_mixed"
    lda #$45
    sta strTemp+2
    // [5] *((const byte[]) strTemp#0+(byte) 3) ← (byte) 0 -- _deref_pbuc1=vbuc2 
    lda #0
    sta strTemp+3
    // asm { ldy#0 loop: ldastrTemp,y beqdone jsr$FFD2 iny jmploop done:  }
    ldy #0
  loop:
    lda strTemp,y
    beq done
    jsr $ffd2
    iny
    jmp loop
  done:
    jmp breturn
    // main::@return
  breturn:
    // [7] return 
    rts
}
  // File Data
  strTemp: .text "v=X"
  .byte 0

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [4] *((const byte[]) strTemp#0+(byte) 2) ← (byte) 'e'pm [ ] ( main:2 [ ] ) always clobbers reg byte a 
Statement [5] *((const byte[]) strTemp#0+(byte) 3) ← (byte) 0 [ ] ( main:2 [ ] ) always clobbers reg byte a 
Statement asm { ldy#0 loop: ldastrTemp,y beqdone jsr$FFD2 iny jmploop done:  } always clobbers reg byte a reg byte x reg byte y 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 
Uplift Scope [] 

Uplifting [main] best 53 combination 
Uplifting [] best 53 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  // @begin
bbegin:
  // [1] phi from @begin to @1 [phi:@begin->@1]
b1_from_bbegin:
  jmp b1
  // @1
b1:
  // [2] call main 
  jsr main
  // [3] phi from @1 to @end [phi:@1->@end]
bend_from_b1:
  jmp bend
  // @end
bend:
  // main
main: {
    // [4] *((const byte[]) strTemp#0+(byte) 2) ← (byte) 'e'pm -- _deref_pbuc1=vbuc2 
  .encoding "petscii_mixed"
    lda #$45
    sta strTemp+2
    // [5] *((const byte[]) strTemp#0+(byte) 3) ← (byte) 0 -- _deref_pbuc1=vbuc2 
    lda #0
    sta strTemp+3
    // asm { ldy#0 loop: ldastrTemp,y beqdone jsr$FFD2 iny jmploop done:  }
    ldy #0
  loop:
    lda strTemp,y
    beq done
    jsr $ffd2
    iny
    jmp loop
  done:
    jmp breturn
    // main::@return
  breturn:
    // [7] return 
    rts
}
  // File Data
  strTemp: .text "v=X"
  .byte 0

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing instruction ldy #0 with TAY
Removing instruction b1_from_bbegin:
Removing instruction b1:
Removing instruction bend_from_b1:
Removing instruction breturn:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction bend:
Succesful ASM optimization Pass5UnusedLabelElimination
Updating BasicUpstart to call main directly
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction bbegin:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(signed word()) main()
(label) main::@return
(signed word) main::return
(byte[]) strTemp
(const byte[]) strTemp#0 strTemp = (string) "v=X"pm



FINAL ASSEMBLER
Score: 38

  // File Comments
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  // @begin
  // [1] phi from @begin to @1 [phi:@begin->@1]
  // @1
  // [2] call main 
  // [3] phi from @1 to @end [phi:@1->@end]
  // @end
  // main
main: {
    // strTemp[2] = 'e'
    // [4] *((const byte[]) strTemp#0+(byte) 2) ← (byte) 'e'pm -- _deref_pbuc1=vbuc2 
  .encoding "petscii_mixed"
    lda #$45
    sta strTemp+2
    // strTemp[3] = 0
    // [5] *((const byte[]) strTemp#0+(byte) 3) ← (byte) 0 -- _deref_pbuc1=vbuc2 
    lda #0
    sta strTemp+3
    // asm
    // asm { ldy#0 loop: ldastrTemp,y beqdone jsr$FFD2 iny jmploop done:  }
    tay
  loop:
    lda strTemp,y
    beq done
    jsr $ffd2
    iny
    jmp loop
  done:
    // main::@return
    // }
    // [7] return 
    rts
}
  // File Data
  strTemp: .text "v=X"
  .byte 0