kickc/src/test/ref/asm-uses-0.log

Resolved forward reference init to (void()) init()

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  to:@1
main: scope:[main]  from @2
  asm { jsrinit  }
  to:main::@return
main::@return: scope:[main]  from main
  return 
  to:@return
@1: scope:[]  from @begin
  (byte*) BGCOL#0 ← ((byte*)) (number) $d020
  to:@2
init: scope:[init]  from
  *((byte*) BGCOL#0) ← (number) 0
  to:init::@return
init::@return: scope:[init]  from init
  return 
  to:@return
@2: scope:[]  from @1
  call main 
  to:@3
@3: scope:[]  from @2
  to:@end
@end: scope:[]  from @3

SYMBOL TABLE SSA
(label) @1
(label) @2
(label) @3
(label) @begin
(label) @end
(byte*) BGCOL
(byte*) BGCOL#0
(void()) init()
(label) init::@return
(void()) main()
(label) main::@return

Adding number conversion cast (unumber) 0 in *((byte*) BGCOL#0) ← (number) 0
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast (byte*) BGCOL#0 ← (byte*)(number) $d020
Inlining cast *((byte*) BGCOL#0) ← (unumber)(number) 0
Successful SSA optimization Pass2InlineCast
Simplifying constant pointer cast (byte*) 53280
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Constant (const byte*) BGCOL#0 = (byte*) 53280
Successful SSA optimization Pass2ConstantIdentification
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 @3
Adding NOP phi() at start of @end
CALL GRAPH
Calls in [] to main:3 

Created 0 initial phi equivalence classes
Coalesced down to 0 phi equivalence classes
Culled Empty Block (label) @1
Culled Empty Block (label) @3
Renumbering block @2 to @1
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
  asm { jsrinit  }
  to:main::@return
main::@return: scope:[main]  from main
  [5] return 
  to:@return
init: scope:[init]  from
  [6] *((const byte*) BGCOL#0) ← (byte) 0
  to:init::@return
init::@return: scope:[init]  from init
  [7] return 
  to:@return


VARIABLE REGISTER WEIGHTS
(byte*) BGCOL
(void()) init()
(void()) main()

Initial phi equivalence classes
Complete equivalence classes

INITIAL ASM
Target platform is c64basic / MOS6502X
  // File Comments
// Tests that inline asm uses clause makes the compiler not cull a procedure referenced
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .label BGCOL = $d020
  // @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: {
    // asm { jsrinit  }
    jsr init
    jmp breturn
    // main::@return
  breturn:
    // [5] return 
    rts
}
  // init
// Function only used inside the inline asm
init: {
    // [6] *((const byte*) BGCOL#0) ← (byte) 0 -- _deref_pbuc1=vbuc2 
    lda #0
    sta BGCOL
    jmp breturn
    // init::@return
  breturn:
    // [7] return 
    rts
}
  // File Data

REGISTER UPLIFT POTENTIAL REGISTERS
Statement asm { jsrinit  } always clobbers reg byte a reg byte x reg byte y 
Statement [6] *((const byte*) BGCOL#0) ← (byte) 0 [ ] (  [ ] ) always clobbers reg byte a 

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

Uplifting [main] best 42 combination 
Uplifting [init] best 42 combination 
Uplifting [] best 42 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Tests that inline asm uses clause makes the compiler not cull a procedure referenced
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .label BGCOL = $d020
  // @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: {
    // asm { jsrinit  }
    jsr init
    jmp breturn
    // main::@return
  breturn:
    // [5] return 
    rts
}
  // init
// Function only used inside the inline asm
init: {
    // [6] *((const byte*) BGCOL#0) ← (byte) 0 -- _deref_pbuc1=vbuc2 
    lda #0
    sta BGCOL
    jmp breturn
    // init::@return
  breturn:
    // [7] return 
    rts
}
  // File Data

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp breturn
Removing instruction jmp breturn
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction b1_from_bbegin:
Removing instruction b1:
Removing instruction bend_from_b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction bend:
Removing instruction breturn:
Removing instruction breturn:
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
(byte*) BGCOL
(const byte*) BGCOL#0 BGCOL = (byte*) 53280
(void()) init()
(label) init::@return
(void()) main()
(label) main::@return



FINAL ASSEMBLER
Score: 24

  // File Comments
// Tests that inline asm uses clause makes the compiler not cull a procedure referenced
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  .label BGCOL = $d020
  // @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: {
    // asm
    // asm { jsrinit  }
    jsr init
    // main::@return
    // }
    // [5] return 
    rts
}
  // init
// Function only used inside the inline asm
init: {
    // *BGCOL = 0
    // [6] *((const byte*) BGCOL#0) ← (byte) 0 -- _deref_pbuc1=vbuc2 
    lda #0
    sta BGCOL
    // init::@return
    // }
    // [7] return 
    rts
}
  // File Data