Fixed test data

src/main/java/dk/camelot64/kickc/test/ref/bresenham.asm

@@ -45,6 +45,6 @@ B2:
   lda 5
   sec
   sbc #39
-B3_from_B2:
   sta 5
+B3_from_B2:
   jmp B3

src/main/java/dk/camelot64/kickc/test/ref/bresenham.log

@@ -1046,11 +1046,6 @@ Initial phi equivalence classes
 [ x#2 x#1 ]
 [ e#3 e#5 e#1 e#2 ]
 [ y#2 y#4 y#1 ]
-Copy Coalesced equivalence classes
-[ cursor#3 cursor#5 cursor#1 cursor#2 ]
-[ x#2 x#1 ]
-[ e#3 e#5 e#1 e#2 ]
-[ y#2 y#4 y#1 ]
 Complete equivalence classes
 [ cursor#3 cursor#5 cursor#1 cursor#2 ]
 [ x#2 x#1 ]
@@ -1093,11 +1088,11 @@ zp byte:4 [ x#2 x#1 ]
 zp byte:5 [ e#3 e#5 e#1 e#2 ]
 zp byte:6 [ y#2 y#4 y#1 ]
 
-Re-allocated ZP register from zp ptr byte:2 to zp ptr byte:2
+Uplifting max weight 55.0 live range equivalence class zp byte:5 [ e#3 e#5 e#1 e#2 ]
-Re-allocated ZP register from zp byte:4 to zp byte:4
+Uplift to reg byte a resulted in clobber.
-Re-allocated ZP register from zp byte:5 to zp byte:5
+Register Cycles: reg byte x 78
-Re-allocated ZP register from zp byte:6 to zp byte:6
+Uplift to reg byte x succesfull.
-Uplifting of variable (byte) e#2 to A
+Uplift to reg byte y resulted in clobber.
 REGISTER UPLIFTING
 (byte[1000]) SCREEN
 (byte) STAR
@@ -1108,7 +1103,7 @@ REGISTER UPLIFTING
 (byte*) cursor#5 zp ptr byte:2 16.5
 (byte) e
 (byte) e#1 zp byte:5 11.0
-(byte) e#2 reg byte a 22.0
+(byte) e#2 zp byte:5 22.0
 (byte) e#3 zp byte:5 5.5
 (byte) e#5 zp byte:5 16.5
 (byte) x
@@ -1198,14 +1193,14 @@ B2:
   bcc !+
   inc 2+1
 !:
-  // [10] (byte) e#2 ← (byte) e#1 - (byte) 39 [ x#1 cursor#2 e#2 y#1 ]  //  aby=zpby1_minus_coby1
+  // [10] (byte) e#2 ← (byte) e#1 - (byte) 39 [ x#1 cursor#2 e#2 y#1 ]  //  zpby1=zpby1_minus_coby1
   lda 5
   sec
   sbc #39
+  sta 5
 B3_from_B2:
   // (byte) y#4 = (byte) y#1  // register copy zp byte:6
-  // (byte) e#5 = (byte) e#2  // zpby1=aby
+  // (byte) e#5 = (byte) e#2  // register copy zp byte:5
-  sta 5
   // (byte*) cursor#5 = (byte*) cursor#2  // register copy zp ptr byte:2
   jmp B3
 
@@ -1278,14 +1273,14 @@ B2:
   bcc !+
   inc 2+1
 !:
-  // [10] (byte) e#2 ← (byte) e#1 - (byte) 39 [ x#1 cursor#2 e#2 y#1 ]  //  aby=zpby1_minus_coby1
+  // [10] (byte) e#2 ← (byte) e#1 - (byte) 39 [ x#1 cursor#2 e#2 y#1 ]  //  zpby1=zpby1_minus_coby1
   lda 5
   sec
   sbc #39
+  sta 5
 B3_from_B2:
   // (byte) y#4 = (byte) y#1  // register copy zp byte:6
-  // (byte) e#5 = (byte) e#2  // zpby1=aby
+  // (byte) e#5 = (byte) e#2  // register copy zp byte:5
-  sta 5
   // (byte*) cursor#5 = (byte*) cursor#2  // register copy zp ptr byte:2
   jmp B3
 
@@ -1355,14 +1350,14 @@ B2:
   bcc !+
   inc 2+1
 !:
-  // [10] (byte) e#2 ← (byte) e#1 - (byte) 39 [ x#1 cursor#2 e#2 y#1 ]  //  aby=zpby1_minus_coby1
+  // [10] (byte) e#2 ← (byte) e#1 - (byte) 39 [ x#1 cursor#2 e#2 y#1 ]  //  zpby1=zpby1_minus_coby1
   lda 5
   sec
   sbc #39
+  sta 5
 B3_from_B2:
   // (byte) y#4 = (byte) y#1  // register copy zp byte:6
-  // (byte) e#5 = (byte) e#2  // zpby1=aby
+  // (byte) e#5 = (byte) e#2  // register copy zp byte:5
-  sta 5
   // (byte*) cursor#5 = (byte*) cursor#2  // register copy zp ptr byte:2
   jmp B3
 
@@ -1381,7 +1376,7 @@ FINAL SYMBOL TABLE
 (byte*) cursor#5 zp ptr byte:2 16.5
 (byte) e
 (byte) e#1 zp byte:5 11.0
-(byte) e#2 reg byte a 22.0
+(byte) e#2 zp byte:5 22.0
 (byte) e#3 zp byte:5 5.5
 (byte) e#5 zp byte:5 16.5
 (byte) x
@@ -1467,14 +1462,14 @@ B2:
   bcc !+
   inc 2+1
 !:
-  // [10] (byte) e#2 ← (byte) e#1 - (byte) 39 [ x#1 cursor#2 e#2 y#1 ]  //  aby=zpby1_minus_coby1
+  // [10] (byte) e#2 ← (byte) e#1 - (byte) 39 [ x#1 cursor#2 e#2 y#1 ]  //  zpby1=zpby1_minus_coby1
   lda 5
   sec
   sbc #39
+  sta 5
 B3_from_B2:
   // (byte) y#4 = (byte) y#1  // register copy zp byte:6
-  // (byte) e#5 = (byte) e#2  // zpby1=aby
+  // (byte) e#5 = (byte) e#2  // register copy zp byte:5
-  sta 5
   // (byte*) cursor#5 = (byte*) cursor#2  // register copy zp ptr byte:2
   jmp B3
 

src/main/java/dk/camelot64/kickc/test/ref/bresenham.sym

@@ -12,7 +12,7 @@
 (byte*) cursor#5 zp ptr byte:2 16.5
 (byte) e
 (byte) e#1 zp byte:5 11.0
-(byte) e#2 reg byte a 22.0
+(byte) e#2 zp byte:5 22.0
 (byte) e#3 zp byte:5 5.5
 (byte) e#5 zp byte:5 16.5
 (byte) x

src/main/java/dk/camelot64/kickc/test/ref/fibmem.asm

@@ -17,8 +17,8 @@ B1:
   lda 3
   clc
   adc 4
-  sta 3
+  sta 5
-  lda 3
+  lda 5
   ldx 2
   sta 4354,x
   inc 2

src/main/java/dk/camelot64/kickc/test/ref/fibmem.log

@@ -417,18 +417,18 @@ Loop head: @1 tails: @1 blocks: @1  depth: 1
 
 Initial phi equivalence classes
 [ i#2 i#1 ]
-Copy Coalesced equivalence classes
-[ i#2 i#1 ]
 Added variable $1 to zero page equivalence class [ $1 ]
 Added variable $3 to zero page equivalence class [ $3 ]
-Added variable $4 to zero page equivalence class [ $1 $4 ]
+Added variable $4 to zero page equivalence class [ $4 ]
 Complete equivalence classes
 [ i#2 i#1 ]
-[ $1 $4 ]
+[ $1 ]
 [ $3 ]
+[ $4 ]
 Allocated zp byte:2 to zp byte:2 [ i#2 i#1 ]
-Allocated zp byte:3 to zp byte:3 [ $1 $4 ]
+Allocated zp byte:3 to zp byte:3 [ $1 ]
 Allocated zp byte:4 to zp byte:4 [ $3 ]
+Allocated zp byte:5 to zp byte:5 [ $4 ]
 
 VARIABLE REGISTER WEIGHTS
 (byte~) $1 11.0
@@ -440,36 +440,31 @@ VARIABLE REGISTER WEIGHTS
 (byte) i#2 11.0
 
 zp byte:2 [ i#2 i#1 ]
-zp byte:3 [ $1 $4 ]
+zp byte:3 [ $1 ]
 zp byte:4 [ $3 ]
+zp byte:5 [ $4 ]
 
-Uplifting max weight 33.0 live range equivalence class zp byte:3 [ $1 $4 ]
+Uplifting max weight 27.5 live range equivalence class zp byte:2 [ i#2 i#1 ]
-Error! Alive variable $1 register reg byte a clobbered by the ASM generated by statement [4] $3 ← 4353 *idx i#2
-  ldx 2
-  lda 4353,x
-  sta 4
-
 Uplift to reg byte a resulted in clobber.
-Error! Alive variable $1 register reg byte x clobbered by the ASM generated by statement [4] $3 ← 4353 *idx i#2
+Register Cycles: reg byte x 39
-  ldx 2
+Uplift to reg byte x succesfull.
-  lda 4353,x
+Register Cycles: reg byte y 39
-  sta 4
-
-Uplift to reg byte x resulted in clobber.
 Uplift to reg byte y succesfull.
 REGISTER UPLIFTING
 (byte~) $1 zp byte:3 11.0
 (byte~) $3 zp byte:4 22.0
-(byte~) $4 zp byte:3 22.0
+(byte~) $4 zp byte:5 22.0
 (byte[15]) fibs
 (byte) i
 (byte) i#1 zp byte:2 16.5
 (byte) i#2 zp byte:2 11.0
 
 zp byte:2 [ i#2 i#1 ]
-zp byte:3 [ $1 $4 ]
+zp byte:3 [ $1 ]
 zp byte:4 [ $3 ]
+zp byte:5 [ $4 ]
 
+Coalescing zero page register [ zp byte:3 [ $1 ] ] with [ zp byte:5 [ $4 ] ]
 INITIAL ASM
 BBEGIN:
   // [0] *((word) 4352) ← (byte) 0 [ ]  //  _star_cowo1=coby2
@@ -495,13 +490,13 @@ B1:
   ldx 2
   lda 4353,x
   sta 4
-  // [5] (byte~) $4 ← (byte~) $1 + (byte~) $3 [ i#2 $4 ]  //  zpby1=zpby1_plus_zpby2
+  // [5] (byte~) $4 ← (byte~) $1 + (byte~) $3 [ i#2 $4 ]  //  zpby1=zpby2_plus_zpby3
   lda 3
   clc
   adc 4
-  sta 3
+  sta 5
   // [6] *((word) 4354 + (byte) i#2) ← (byte~) $4 [ i#2 ]  //  cowo1_staridx_zpby1=zpby2
-  lda 3
+  lda 5
   ldx 2
   sta 4354,x
   // [7] (byte) i#1 ← (byte) i#2 + (byte) 1 [ i#1 ]  //  zpby1=zpby1_plus_1
@@ -540,13 +535,13 @@ B1:
   ldx 2
   lda 4353,x
   sta 4
-  // [5] (byte~) $4 ← (byte~) $1 + (byte~) $3 [ i#2 $4 ]  //  zpby1=zpby1_plus_zpby2
+  // [5] (byte~) $4 ← (byte~) $1 + (byte~) $3 [ i#2 $4 ]  //  zpby1=zpby2_plus_zpby3
   lda 3
   clc
   adc 4
-  sta 3
+  sta 5
   // [6] *((word) 4354 + (byte) i#2) ← (byte~) $4 [ i#2 ]  //  cowo1_staridx_zpby1=zpby2
-  lda 3
+  lda 5
   ldx 2
   sta 4354,x
   // [7] (byte) i#1 ← (byte) i#2 + (byte) 1 [ i#1 ]  //  zpby1=zpby1_plus_1
@@ -582,13 +577,13 @@ B1:
   ldx 2
   lda 4353,x
   sta 4
-  // [5] (byte~) $4 ← (byte~) $1 + (byte~) $3 [ i#2 $4 ]  //  zpby1=zpby1_plus_zpby2
+  // [5] (byte~) $4 ← (byte~) $1 + (byte~) $3 [ i#2 $4 ]  //  zpby1=zpby2_plus_zpby3
   lda 3
   clc
   adc 4
-  sta 3
+  sta 5
   // [6] *((word) 4354 + (byte) i#2) ← (byte~) $4 [ i#2 ]  //  cowo1_staridx_zpby1=zpby2
-  lda 3
+  lda 5
   ldx 2
   sta 4354,x
   // [7] (byte) i#1 ← (byte) i#2 + (byte) 1 [ i#1 ]  //  zpby1=zpby1_plus_1
@@ -602,7 +597,7 @@ BEND:
 FINAL SYMBOL TABLE
 (byte~) $1 zp byte:3 11.0
 (byte~) $3 zp byte:4 22.0
-(byte~) $4 zp byte:3 22.0
+(byte~) $4 zp byte:5 22.0
 (label) @1
 (label) @BEGIN
 (label) @END
@@ -638,13 +633,13 @@ B1:
   ldx 2
   lda 4353,x
   sta 4
-  // [5] (byte~) $4 ← (byte~) $1 + (byte~) $3 [ i#2 $4 ]  //  zpby1=zpby1_plus_zpby2
+  // [5] (byte~) $4 ← (byte~) $1 + (byte~) $3 [ i#2 $4 ]  //  zpby1=zpby2_plus_zpby3
   lda 3
   clc
   adc 4
-  sta 3
+  sta 5
   // [6] *((word) 4354 + (byte) i#2) ← (byte~) $4 [ i#2 ]  //  cowo1_staridx_zpby1=zpby2
-  lda 3
+  lda 5
   ldx 2
   sta 4354,x
   // [7] (byte) i#1 ← (byte) i#2 + (byte) 1 [ i#1 ]  //  zpby1=zpby1_plus_1

src/main/java/dk/camelot64/kickc/test/ref/fibmem.sym

@@ -1,6 +1,6 @@
 (byte~) $1 zp byte:3 11.0
 (byte~) $3 zp byte:4 22.0
-(byte~) $4 zp byte:3 22.0
+(byte~) $4 zp byte:5 22.0
 (label) @1
 (label) @BEGIN
 (label) @END

src/main/java/dk/camelot64/kickc/test/ref/flipper-rex2.log

@@ -4028,18 +4028,6 @@ Initial phi equivalence classes
 [ flip::c#2 flip::c#1 ]
 [ flip::i#2 flip::i#1 ]
 [ prepare::i#2 prepare::i#1 ]
-Copy Coalesced equivalence classes
-[ main::c#2 main::c#1 ]
-[ plot::line#2 plot::line#1 ]
-[ plot::y#2 plot::y#1 ]
-[ plot::i#2 plot::i#3 plot::i#1 ]
-[ plot::x#2 plot::x#1 ]
-[ flip::r#2 flip::r#1 ]
-[ flip::srcIdx#2 flip::srcIdx#3 flip::srcIdx#1 ]
-[ flip::dstIdx#3 flip::dstIdx#5 flip::dstIdx#2 flip::dstIdx#1 ]
-[ flip::c#2 flip::c#1 ]
-[ flip::i#2 flip::i#1 ]
-[ prepare::i#2 prepare::i#1 ]
 Added variable main::$1 to zero page equivalence class [ main::$1 ]
 Added variable main::$3 to zero page equivalence class [ main::$3 ]
 Added variable plot::$3 to zero page equivalence class [ plot::$3 ]
@@ -4149,23 +4137,9 @@ zp byte:17 [ flip::$0 ]
 zp byte:18 [ flip::$4 ]
 
 Uplifting max weight 2252.25 live range equivalence class zp byte:7 [ plot::x#2 plot::x#1 ]
-Error! Alive variable plot::x#2 register reg byte a clobbered by the ASM generated by statement [15] plot::$3 ← 4096 *idx plot::i#2
-  ldx 6
-  lda 4096,x
-  sta 16
-
-Error! Alive variable plot::x#2 register reg byte a clobbered by the ASM generated by statement [16] *(plot::line#2 + plot::x#2) ← plot::$3
-  tay
-  lda 16
-  sta (3),y
-
 Uplift to reg byte a resulted in clobber.
-Error! Alive variable plot::x#2 register reg byte x clobbered by the ASM generated by statement [15] plot::$3 ← 4096 *idx plot::i#2
-  ldx 6
-  lda 4096,x
-  sta 16
-
 Uplift to reg byte x resulted in clobber.
+Register Cycles: reg byte y 30
 Uplift to reg byte y succesfull.
 REGISTER UPLIFTING
 (byte*) RASTER

src/main/java/dk/camelot64/kickc/test/ref/loopmin.log

@@ -363,9 +363,6 @@ Loop head: @1 tails: @3 blocks: @3 @1 @2  depth: 1
 Initial phi equivalence classes
 [ i#2 i#1 ]
 [ s#2 s#4 s#1 ]
-Copy Coalesced equivalence classes
-[ i#2 i#1 ]
-[ s#2 s#4 s#1 ]
 Complete equivalence classes
 [ i#2 i#1 ]
 [ s#2 s#4 s#1 ]
@@ -385,19 +382,10 @@ zp byte:2 [ i#2 i#1 ]
 zp byte:3 [ s#2 s#4 s#1 ]
 
 Uplifting max weight 49.5 live range equivalence class zp byte:3 [ s#2 s#4 s#1 ]
-Error! Alive variable s#2 register reg byte a clobbered by the ASM generated by statement [1] if(i#2>5) goto @2
-  lda 2
-  cmp #5
-  beq !+
-  bcs B2
-!:
-
-Error! Alive variable s#4 register reg byte a clobbered by the ASM generated by statement [4] if(i#1>0) goto @1
-  lda 2
-  bne B1_from_B3
-
 Uplift to reg byte a resulted in clobber.
+Register Cycles: reg byte x 28
 Uplift to reg byte x succesfull.
+Register Cycles: reg byte y 28
 Uplift to reg byte y succesfull.
 REGISTER UPLIFTING
 (byte) i

src/main/java/dk/camelot64/kickc/test/ref/loopnest.log

@@ -711,9 +711,6 @@ Loop head: nest::@1 tails: nest::@1 blocks: nest::@1  depth: 2
 Initial phi equivalence classes
 [ main::i#2 main::i#1 ]
 [ nest::j#2 nest::j#1 ]
-Copy Coalesced equivalence classes
-[ main::i#2 main::i#1 ]
-[ nest::j#2 nest::j#1 ]
 Complete equivalence classes
 [ main::i#2 main::i#1 ]
 [ nest::j#2 nest::j#1 ]
@@ -735,8 +732,11 @@ zp byte:2 [ main::i#2 main::i#1 ]
 zp byte:3 [ nest::j#2 nest::j#1 ]
 
 Uplifting max weight 303.0 live range equivalence class zp byte:3 [ nest::j#2 nest::j#1 ]
+Register Cycles: reg byte a 12
 Uplift to reg byte a succesfull.
+Register Cycles: reg byte x 10
 Uplift to reg byte x succesfull.
+Register Cycles: reg byte y 10
 Uplift to reg byte y succesfull.
 REGISTER UPLIFTING
 (byte*) SCREEN

src/main/java/dk/camelot64/kickc/test/ref/loopnest2.log

@@ -1797,13 +1797,6 @@ Initial phi equivalence classes
 [ nest1::j#2 nest1::j#1 ]
 [ nest2::i#2 nest2::i#1 ]
 [ nest2::j#2 nest2::j#1 ]
-Copy Coalesced equivalence classes
-[ main::i#2 main::i#1 ]
-[ main::j#2 main::j#1 ]
-[ nest1::i#2 nest1::i#1 ]
-[ nest1::j#2 nest1::j#1 ]
-[ nest2::i#2 nest2::i#1 ]
-[ nest2::j#2 nest2::j#1 ]
 Complete equivalence classes
 [ main::i#2 main::i#1 ]
 [ main::j#2 main::j#1 ]
@@ -1850,8 +1843,11 @@ zp byte:6 [ nest2::i#2 nest2::i#1 ]
 zp byte:7 [ nest2::j#2 nest2::j#1 ]
 
 Uplifting max weight 3000003.0 live range equivalence class zp byte:7 [ nest2::j#2 nest2::j#1 ]
+Register Cycles: reg byte a 12
 Uplift to reg byte a succesfull.
+Register Cycles: reg byte x 10
 Uplift to reg byte x succesfull.
+Register Cycles: reg byte y 10
 Uplift to reg byte y succesfull.
 REGISTER UPLIFTING
 (byte*) SCREEN

src/main/java/dk/camelot64/kickc/test/ref/loopsplit.log

@@ -516,9 +516,6 @@ Loop head: main::@1 tails: main::@5 main::@4 blocks: main::@5 main::@2 main::@1
 Initial phi equivalence classes
 [ main::i#2 main::i#1 ]
 [ main::s#3 main::s#1 main::s#2 ]
-Copy Coalesced equivalence classes
-[ main::i#2 main::i#1 ]
-[ main::s#3 main::s#1 main::s#2 ]
 Complete equivalence classes
 [ main::i#2 main::i#1 ]
 [ main::s#3 main::s#1 main::s#2 ]
@@ -539,19 +536,10 @@ zp byte:2 [ main::i#2 main::i#1 ]
 zp byte:3 [ main::s#3 main::s#1 main::s#2 ]
 
 Uplifting max weight 55.0 live range equivalence class zp byte:3 [ main::s#3 main::s#1 main::s#2 ]
-Error! Alive variable main::s#3 register reg byte a clobbered by the ASM generated by statement [3] if(main::i#1>0) goto main::@2
-  lda 2
-  bne main__B2
-
-Error! Alive variable main::s#3 register reg byte a clobbered by the ASM generated by statement [5] if(main::i#1>50) goto main::@4
-  lda 2
-  cmp #50
-  beq !+
-  bcs main__B4
-!:
-
 Uplift to reg byte a resulted in clobber.
+Register Cycles: reg byte x 23
 Uplift to reg byte x succesfull.
+Register Cycles: reg byte y 23
 Uplift to reg byte y succesfull.
 REGISTER UPLIFTING
 (void()) main()

src/main/java/dk/camelot64/kickc/test/ref/minus.log

@@ -292,8 +292,6 @@ Loop head: @1 tails: @1 blocks: @1  depth: 1
 
 Initial phi equivalence classes
 [ i#2 i#1 ]
-Copy Coalesced equivalence classes
-[ i#2 i#1 ]
 Added variable $1 to zero page equivalence class [ $1 ]
 Complete equivalence classes
 [ i#2 i#1 ]
@@ -312,18 +310,10 @@ zp byte:2 [ i#2 i#1 ]
 zp byte:3 [ $1 ]
 
 Uplifting max weight 31.166666666666664 live range equivalence class zp byte:2 [ i#2 i#1 ]
-Error! Alive variable i#2 register reg byte a clobbered by the ASM generated by statement [1] $1 ← i#2 + 4
-  clc
-  adc #4
-  sta 3
-
-Error! Alive variable i#2 register reg byte a clobbered by the ASM generated by statement [2] *(4352 + i#2) ← $1
-  tax
-  lda 3
-  sta 4352,x
-
 Uplift to reg byte a resulted in clobber.
+Register Cycles: reg byte x 23
 Uplift to reg byte x succesfull.
+Register Cycles: reg byte y 23
 Uplift to reg byte y succesfull.
 REGISTER UPLIFTING
 (byte~) $1 zp byte:3 22.0

src/main/java/dk/camelot64/kickc/test/ref/ptrtest.asm

@@ -78,7 +78,7 @@ rvalue__Breturn:
 rvalue__B2:
   ldx 8
   lda 1024,x
-  sta 8
+  sta 13
   inc 8
 rvalue__B1_from_B2:
   jmp rvalue__B1

src/main/java/dk/camelot64/kickc/test/ref/ptrtest.log

@@ -1815,36 +1815,31 @@ Initial phi equivalence classes
 [ rvaluevar::screen#2 rvaluevar::screen#1 ]
 [ rvalue::i#2 rvalue::i#1 ]
 [ lvalue::i#2 lvalue::i#1 ]
-Copy Coalesced equivalence classes
+Added variable rvaluevar::b#0 to zero page equivalence class [ rvaluevar::b#0 ]
+Added variable rvalue::b#0 to zero page equivalence class [ rvalue::b#0 ]
+Added variable rvalue::b#1 to zero page equivalence class [ rvalue::b#1 ]
+Added variable rvalue::b#2 to zero page equivalence class [ rvalue::b#2 ]
+Complete equivalence classes
 [ lvaluevar::i#2 lvaluevar::i#1 ]
 [ lvaluevar::screen#2 lvaluevar::screen#1 ]
 [ rvaluevar::i#2 rvaluevar::i#1 ]
 [ rvaluevar::screen#2 rvaluevar::screen#1 ]
 [ rvalue::i#2 rvalue::i#1 ]
 [ lvalue::i#2 lvalue::i#1 ]
-Added variable rvaluevar::b#0 to zero page equivalence class [ rvaluevar::b#0 ]
-Added variable rvalue::b#0 to zero page equivalence class [ rvalue::b#0 ]
-Added variable rvalue::b#1 to zero page equivalence class [ rvalue::b#1 ]
-Added variable rvalue::b#2 to zero page equivalence class [ rvalue::i#2 rvalue::i#1 rvalue::b#2 ]
-Complete equivalence classes
-[ lvaluevar::i#2 lvaluevar::i#1 ]
-[ lvaluevar::screen#2 lvaluevar::screen#1 ]
-[ rvaluevar::i#2 rvaluevar::i#1 ]
-[ rvaluevar::screen#2 rvaluevar::screen#1 ]
-[ rvalue::i#2 rvalue::i#1 rvalue::b#2 ]
-[ lvalue::i#2 lvalue::i#1 ]
 [ rvaluevar::b#0 ]
 [ rvalue::b#0 ]
 [ rvalue::b#1 ]
+[ rvalue::b#2 ]
 Allocated zp byte:2 to zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 ]
 Allocated zp ptr byte:3 to zp ptr byte:3 [ lvaluevar::screen#2 lvaluevar::screen#1 ]
 Allocated zp byte:5 to zp byte:5 [ rvaluevar::i#2 rvaluevar::i#1 ]
 Allocated zp ptr byte:6 to zp ptr byte:6 [ rvaluevar::screen#2 rvaluevar::screen#1 ]
-Allocated zp byte:8 to zp byte:8 [ rvalue::i#2 rvalue::i#1 rvalue::b#2 ]
+Allocated zp byte:8 to zp byte:8 [ rvalue::i#2 rvalue::i#1 ]
 Allocated zp byte:9 to zp byte:9 [ lvalue::i#2 lvalue::i#1 ]
 Allocated zp byte:10 to zp byte:10 [ rvaluevar::b#0 ]
 Allocated zp byte:11 to zp byte:11 [ rvalue::b#0 ]
 Allocated zp byte:12 to zp byte:12 [ rvalue::b#1 ]
+Allocated zp byte:13 to zp byte:13 [ rvalue::b#2 ]
 
 VARIABLE REGISTER WEIGHTS
 (void()) lvalue()
@@ -1884,28 +1879,20 @@ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 ]
 zp ptr byte:3 [ lvaluevar::screen#2 lvaluevar::screen#1 ]
 zp byte:5 [ rvaluevar::i#2 rvaluevar::i#1 ]
 zp ptr byte:6 [ rvaluevar::screen#2 rvaluevar::screen#1 ]
-zp byte:8 [ rvalue::i#2 rvalue::i#1 rvalue::b#2 ]
+zp byte:8 [ rvalue::i#2 rvalue::i#1 ]
 zp byte:9 [ lvalue::i#2 lvalue::i#1 ]
 zp byte:10 [ rvaluevar::b#0 ]
 zp byte:11 [ rvalue::b#0 ]
 zp byte:12 [ rvalue::b#1 ]
+zp byte:13 [ rvalue::b#2 ]
 
-Uplifting max weight Infinity live range equivalence class zp byte:8 [ rvalue::i#2 rvalue::i#1 rvalue::b#2 ]
+Uplifting max weight Infinity live range equivalence class zp byte:10 [ rvaluevar::b#0 ]
-Error! Alive variable rvalue::i#2 register reg byte a clobbered by the ASM generated by statement [23] rvalue::b#2 ← 1024 *idx rvalue::i#2
+Register Cycles: reg byte a 0
-  tax
+Uplift to reg byte a succesfull.
-  lda 1024,x
+Register Cycles: reg byte x 0
-
+Uplift to reg byte x succesfull.
-Uplift to reg byte a resulted in clobber.
+Register Cycles: reg byte y 0
-Error! Alive variable rvalue::i#2 register reg byte x clobbered by the ASM generated by statement [23] rvalue::b#2 ← 1024 *idx rvalue::i#2
+Uplift to reg byte y succesfull.
-  lda 1024,x
-  tax
-
-Uplift to reg byte x resulted in clobber.
-Error! Alive variable rvalue::i#2 register reg byte y clobbered by the ASM generated by statement [23] rvalue::b#2 ← 1024 *idx rvalue::i#2
-  lda 1024,y
-  tay
-
-Uplift to reg byte y resulted in clobber.
 REGISTER UPLIFTING
 (void()) lvalue()
 (byte[1024]) lvalue::SCREEN
@@ -1926,7 +1913,7 @@ REGISTER UPLIFTING
 (byte) rvalue::b
 (byte) rvalue::b#0 zp byte:11 Infinity
 (byte) rvalue::b#1 zp byte:12 Infinity
-(byte) rvalue::b#2 zp byte:8 Infinity
+(byte) rvalue::b#2 zp byte:13 Infinity
 (byte) rvalue::i
 (byte) rvalue::i#1 zp byte:8 22.0
 (byte) rvalue::i#2 zp byte:8 14.666666666666666
@@ -1944,18 +1931,20 @@ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 ]
 zp ptr byte:3 [ lvaluevar::screen#2 lvaluevar::screen#1 ]
 zp byte:5 [ rvaluevar::i#2 rvaluevar::i#1 ]
 zp ptr byte:6 [ rvaluevar::screen#2 rvaluevar::screen#1 ]
-zp byte:8 [ rvalue::i#2 rvalue::i#1 rvalue::b#2 ]
+zp byte:8 [ rvalue::i#2 rvalue::i#1 ]
 zp byte:9 [ lvalue::i#2 lvalue::i#1 ]
 zp byte:10 [ rvaluevar::b#0 ]
 zp byte:11 [ rvalue::b#0 ]
 zp byte:12 [ rvalue::b#1 ]
+zp byte:13 [ rvalue::b#2 ]
 
 Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 ] ] with [ zp byte:5 [ rvaluevar::i#2 rvaluevar::i#1 ] ]
-Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 ] ] with [ zp byte:8 [ rvalue::i#2 rvalue::i#1 rvalue::b#2 ] ]
+Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 ] ] with [ zp byte:8 [ rvalue::i#2 rvalue::i#1 ] ]
-Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 rvalue::b#2 ] ] with [ zp byte:9 [ lvalue::i#2 lvalue::i#1 ] ]
+Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 ] ] with [ zp byte:9 [ lvalue::i#2 lvalue::i#1 ] ]
-Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 rvalue::b#2 lvalue::i#2 lvalue::i#1 ] ] with [ zp byte:10 [ rvaluevar::b#0 ] ]
+Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 lvalue::i#2 lvalue::i#1 ] ] with [ zp byte:10 [ rvaluevar::b#0 ] ]
-Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 rvalue::b#2 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 ] ] with [ zp byte:11 [ rvalue::b#0 ] ]
+Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 ] ] with [ zp byte:11 [ rvalue::b#0 ] ]
-Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 rvalue::b#2 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 rvalue::b#0 ] ] with [ zp byte:12 [ rvalue::b#1 ] ]
+Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 rvalue::b#0 ] ] with [ zp byte:12 [ rvalue::b#1 ] ]
+Coalescing zero page register [ zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 rvalue::b#0 rvalue::b#1 ] ] with [ zp byte:13 [ rvalue::b#2 ] ]
 Coalescing zero page register [ zp ptr byte:3 [ lvaluevar::screen#2 lvaluevar::screen#1 ] ] with [ zp ptr byte:6 [ rvaluevar::screen#2 rvaluevar::screen#1 ] ]
 INITIAL ASM
 BBEGIN:
@@ -2067,10 +2056,10 @@ rvalue__B1:
 rvalue__Breturn:
   rts
 rvalue__B2:
-  // [23] (byte) rvalue::b#2 ← (word) 1024 *idx (byte) rvalue::i#2 [ rvalue::i#2 ]  //  zpby1=cowo1_staridx_zpby1
+  // [23] (byte) rvalue::b#2 ← (word) 1024 *idx (byte) rvalue::i#2 [ rvalue::i#2 ]  //  zpby1=cowo1_staridx_zpby2
   ldx 8
   lda 1024,x
-  sta 8
+  sta 13
   // [24] (byte) rvalue::i#1 ← ++ (byte) rvalue::i#2 [ rvalue::i#1 ]  //  zpby1=_inc_zpby1
   inc 8
 rvalue__B1_from_B2:
@@ -2220,10 +2209,10 @@ rvalue__B1:
 rvalue__Breturn:
   rts
 rvalue__B2:
-  // [23] (byte) rvalue::b#2 ← (word) 1024 *idx (byte) rvalue::i#2 [ rvalue::i#2 ]  //  zpby1=cowo1_staridx_zpby1
+  // [23] (byte) rvalue::b#2 ← (word) 1024 *idx (byte) rvalue::i#2 [ rvalue::i#2 ]  //  zpby1=cowo1_staridx_zpby2
   ldx 8
   lda 1024,x
-  sta 8
+  sta 13
   // [24] (byte) rvalue::i#1 ← ++ (byte) rvalue::i#2 [ rvalue::i#1 ]  //  zpby1=_inc_zpby1
   inc 8
 rvalue__B1_from_B2:
@@ -2293,7 +2282,7 @@ FINAL SYMBOL TABLE
 (byte) rvalue::b
 (byte) rvalue::b#0 zp byte:11 Infinity
 (byte) rvalue::b#1 zp byte:12 Infinity
-(byte) rvalue::b#2 zp byte:8 Infinity
+(byte) rvalue::b#2 zp byte:13 Infinity
 (byte) rvalue::i
 (byte) rvalue::i#1 zp byte:8 22.0
 (byte) rvalue::i#2 zp byte:8 14.666666666666666
@@ -2310,7 +2299,7 @@ FINAL SYMBOL TABLE
 (byte*) rvaluevar::screen#1 zp ptr byte:6 11.0
 (byte*) rvaluevar::screen#2 zp ptr byte:6 11.0
 
-zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 rvalue::b#2 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 rvalue::b#0 rvalue::b#1 ]
+zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 rvalue::b#0 rvalue::b#1 rvalue::b#2 ]
 zp ptr byte:3 [ lvaluevar::screen#2 lvaluevar::screen#1 rvaluevar::screen#2 rvaluevar::screen#1 ]
 
 FINAL CODE
@@ -2412,10 +2401,10 @@ rvalue__B1:
 rvalue__Breturn:
   rts
 rvalue__B2:
-  // [23] (byte) rvalue::b#2 ← (word) 1024 *idx (byte) rvalue::i#2 [ rvalue::i#2 ]  //  zpby1=cowo1_staridx_zpby1
+  // [23] (byte) rvalue::b#2 ← (word) 1024 *idx (byte) rvalue::i#2 [ rvalue::i#2 ]  //  zpby1=cowo1_staridx_zpby2
   ldx 8
   lda 1024,x
-  sta 8
+  sta 13
   // [24] (byte) rvalue::i#1 ← ++ (byte) rvalue::i#2 [ rvalue::i#1 ]  //  zpby1=_inc_zpby1
   inc 8
 rvalue__B1_from_B2:

src/main/java/dk/camelot64/kickc/test/ref/ptrtest.sym

@@ -32,7 +32,7 @@
 (byte) rvalue::b
 (byte) rvalue::b#0 zp byte:11 Infinity
 (byte) rvalue::b#1 zp byte:12 Infinity
-(byte) rvalue::b#2 zp byte:8 Infinity
+(byte) rvalue::b#2 zp byte:13 Infinity
 (byte) rvalue::i
 (byte) rvalue::i#1 zp byte:8 22.0
 (byte) rvalue::i#2 zp byte:8 14.666666666666666
@@ -49,5 +49,5 @@
 (byte*) rvaluevar::screen#1 zp ptr byte:6 11.0
 (byte*) rvaluevar::screen#2 zp ptr byte:6 11.0
 
-zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 rvalue::b#2 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 rvalue::b#0 rvalue::b#1 ]
+zp byte:2 [ lvaluevar::i#2 lvaluevar::i#1 rvaluevar::i#2 rvaluevar::i#1 rvalue::i#2 rvalue::i#1 lvalue::i#2 lvalue::i#1 rvaluevar::b#0 rvalue::b#0 rvalue::b#1 rvalue::b#2 ]
 zp ptr byte:3 [ lvaluevar::screen#2 lvaluevar::screen#1 rvaluevar::screen#2 rvaluevar::screen#1 ]

src/main/java/dk/camelot64/kickc/test/ref/summin.asm

@@ -6,7 +6,7 @@ sum_from_BBEGIN:
   sta 2
   jsr sum
 B2:
-  lda 2
+  lda 7
   sta 4
 sum_from_B2:
   lda #13
@@ -15,17 +15,17 @@ sum_from_B2:
   sta 2
   jsr sum
 B3:
-  lda 2
+  lda 7
   sta 5
   lda 4
   clc
   adc 5
-  sta 4
+  sta 6
 BEND:
 sum:
   lda 2
   clc
   adc 3
-  sta 2
+  sta 7
 sum__Breturn:
   rts

src/main/java/dk/camelot64/kickc/test/ref/summin.log

@@ -353,22 +353,23 @@ NATURAL LOOPS WITH DEPTH
 Initial phi equivalence classes
 [ sum::a#2 ]
 [ sum::b#2 ]
-Copy Coalesced equivalence classes
-[ sum::a#2 ]
-[ sum::b#2 ]
 Added variable s1#0 to zero page equivalence class [ s1#0 ]
 Added variable s2#0 to zero page equivalence class [ s2#0 ]
-Added variable s3#0 to zero page equivalence class [ s1#0 s3#0 ]
+Added variable s3#0 to zero page equivalence class [ s3#0 ]
-Added variable sum::return#0 to zero page equivalence class [ sum::a#2 sum::return#0 ]
+Added variable sum::return#0 to zero page equivalence class [ sum::return#0 ]
 Complete equivalence classes
-[ sum::a#2 sum::return#0 ]
+[ sum::a#2 ]
 [ sum::b#2 ]
-[ s1#0 s3#0 ]
+[ s1#0 ]
 [ s2#0 ]
-Allocated zp byte:2 to zp byte:2 [ sum::a#2 sum::return#0 ]
+[ s3#0 ]
+[ sum::return#0 ]
+Allocated zp byte:2 to zp byte:2 [ sum::a#2 ]
 Allocated zp byte:3 to zp byte:3 [ sum::b#2 ]
-Allocated zp byte:4 to zp byte:4 [ s1#0 s3#0 ]
+Allocated zp byte:4 to zp byte:4 [ s1#0 ]
 Allocated zp byte:5 to zp byte:5 [ s2#0 ]
+Allocated zp byte:6 to zp byte:6 [ s3#0 ]
+Allocated zp byte:7 to zp byte:7 [ sum::return#0 ]
 
 VARIABLE REGISTER WEIGHTS
 (byte) s1
@@ -385,40 +386,19 @@ VARIABLE REGISTER WEIGHTS
 (byte) sum::return
 (byte) sum::return#0 1.2000000000000002
 
-zp byte:2 [ sum::a#2 sum::return#0 ]
+zp byte:2 [ sum::a#2 ]
 zp byte:3 [ sum::b#2 ]
-zp byte:4 [ s1#0 s3#0 ]
+zp byte:4 [ s1#0 ]
 zp byte:5 [ s2#0 ]
+zp byte:6 [ s3#0 ]
+zp byte:7 [ sum::return#0 ]
 
-Uplifting max weight Infinity live range equivalence class zp byte:4 [ s1#0 s3#0 ]
+Uplifting max weight Infinity live range equivalence class zp byte:6 [ s3#0 ]
-Error! Alive variable s1#0 register reg byte a clobbered by the ASM generated by statement [0] call sum param-assignment
+Register Cycles: reg byte a 0
-sum_from_BBEGIN:
+Uplift to reg byte a succesfull.
-  lda #2
+Register Cycles: reg byte x 0
-  sta 3
-  lda #1
-  sta 2
-  jsr sum
-
-Error! Alive variable s1#0 register reg byte a clobbered by the ASM generated by statement [2] call sum param-assignment
-sum_from_B2:
-  lda #13
-  sta 3
-  lda #9
-  sta 2
-  jsr sum
-
-Error! Alive variable s1#0 register reg byte a clobbered by the ASM generated by statement [3] s2#0 ← sum::return#0
-  lda 2
-  sta 5
-
-Error! Alive variable s1#0 register reg byte a clobbered by the ASM generated by statement [6] sum::return#0 ← sum::a#2 + sum::b#2
-  lda 2
-  clc
-  adc 3
-  sta 2
-
-Uplift to reg byte a resulted in clobber.
 Uplift to reg byte x succesfull.
+Register Cycles: reg byte y 0
 Uplift to reg byte y succesfull.
 REGISTER UPLIFTING
 (byte) s1
@@ -426,21 +406,25 @@ REGISTER UPLIFTING
 (byte) s2
 (byte) s2#0 zp byte:5 4.0
 (byte) s3
-(byte) s3#0 zp byte:4 Infinity
+(byte) s3#0 zp byte:6 Infinity
 (byte()) sum((byte) sum::a , (byte) sum::b)
 (byte) sum::a
 (byte) sum::a#2 zp byte:2 2.0
 (byte) sum::b
 (byte) sum::b#2 zp byte:3 2.0
 (byte) sum::return
-(byte) sum::return#0 zp byte:2 1.2000000000000002
+(byte) sum::return#0 zp byte:7 1.2000000000000002
 
-zp byte:2 [ sum::a#2 sum::return#0 ]
+zp byte:2 [ sum::a#2 ]
 zp byte:3 [ sum::b#2 ]
-zp byte:4 [ s1#0 s3#0 ]
+zp byte:4 [ s1#0 ]
 zp byte:5 [ s2#0 ]
+zp byte:6 [ s3#0 ]
+zp byte:7 [ sum::return#0 ]
 
-Coalescing zero page register [ zp byte:2 [ sum::a#2 sum::return#0 ] ] with [ zp byte:5 [ s2#0 ] ]
+Coalescing zero page register [ zp byte:2 [ sum::a#2 ] ] with [ zp byte:5 [ s2#0 ] ]
+Coalescing zero page register [ zp byte:2 [ sum::a#2 s2#0 ] ] with [ zp byte:6 [ s3#0 ] ]
+Coalescing zero page register [ zp byte:2 [ sum::a#2 s2#0 s3#0 ] ] with [ zp byte:7 [ sum::return#0 ] ]
 INITIAL ASM
 BBEGIN:
 sum_from_BBEGIN:
@@ -454,7 +438,7 @@ sum_from_BBEGIN:
   jmp B2
 B2:
   // [1] (byte) s1#0 ← (byte) sum::return#0 [ sum::return#0 s1#0 ]  //  zpby1=zpby2
-  lda 2
+  lda 7
   sta 4
 sum_from_B2:
   // (byte) sum::b#2 = (byte) 13  // zpby1=coby1
@@ -467,21 +451,21 @@ sum_from_B2:
   jmp B3
 B3:
   // [3] (byte) s2#0 ← (byte) sum::return#0 [ s1#0 s2#0 ]  //  zpby1=zpby2
-  lda 2
+  lda 7
   sta 5
-  // [4] (byte) s3#0 ← (byte) s1#0 + (byte) s2#0 [ ]  //  zpby1=zpby1_plus_zpby2
+  // [4] (byte) s3#0 ← (byte) s1#0 + (byte) s2#0 [ ]  //  zpby1=zpby2_plus_zpby3
   lda 4
   clc
   adc 5
-  sta 4
+  sta 6
   jmp BEND
 BEND:
 sum:
-  // [6] (byte) sum::return#0 ← (byte) sum::a#2 + (byte) sum::b#2 [ sum::return#0 s1#0 ]  //  zpby1=zpby1_plus_zpby2
+  // [6] (byte) sum::return#0 ← (byte) sum::a#2 + (byte) sum::b#2 [ sum::return#0 s1#0 ]  //  zpby1=zpby2_plus_zpby3
   lda 2
   clc
   adc 3
-  sta 2
+  sta 7
   jmp sum__Breturn
 sum__Breturn:
   rts
@@ -503,7 +487,7 @@ sum_from_BBEGIN:
   jsr sum
 B2:
   // [1] (byte) s1#0 ← (byte) sum::return#0 [ sum::return#0 s1#0 ]  //  zpby1=zpby2
-  lda 2
+  lda 7
   sta 4
 sum_from_B2:
   // (byte) sum::b#2 = (byte) 13  // zpby1=coby1
@@ -515,20 +499,20 @@ sum_from_B2:
   jsr sum
 B3:
   // [3] (byte) s2#0 ← (byte) sum::return#0 [ s1#0 s2#0 ]  //  zpby1=zpby2
-  lda 2
+  lda 7
   sta 5
-  // [4] (byte) s3#0 ← (byte) s1#0 + (byte) s2#0 [ ]  //  zpby1=zpby1_plus_zpby2
+  // [4] (byte) s3#0 ← (byte) s1#0 + (byte) s2#0 [ ]  //  zpby1=zpby2_plus_zpby3
   lda 4
   clc
   adc 5
-  sta 4
+  sta 6
 BEND:
 sum:
-  // [6] (byte) sum::return#0 ← (byte) sum::a#2 + (byte) sum::b#2 [ sum::return#0 s1#0 ]  //  zpby1=zpby1_plus_zpby2
+  // [6] (byte) sum::return#0 ← (byte) sum::a#2 + (byte) sum::b#2 [ sum::return#0 s1#0 ]  //  zpby1=zpby2_plus_zpby3
   lda 2
   clc
   adc 3
-  sta 2
+  sta 7
 sum__Breturn:
   rts
 
@@ -542,7 +526,7 @@ FINAL SYMBOL TABLE
 (byte) s2
 (byte) s2#0 zp byte:5 4.0
 (byte) s3
-(byte) s3#0 zp byte:4 Infinity
+(byte) s3#0 zp byte:6 Infinity
 (byte()) sum((byte) sum::a , (byte) sum::b)
 (label) sum::@return
 (byte) sum::a
@@ -550,11 +534,11 @@ FINAL SYMBOL TABLE
 (byte) sum::b
 (byte) sum::b#2 zp byte:3 2.0
 (byte) sum::return
-(byte) sum::return#0 zp byte:2 1.2000000000000002
+(byte) sum::return#0 zp byte:7 1.2000000000000002
 
-zp byte:2 [ sum::a#2 sum::return#0 s2#0 ]
+zp byte:2 [ sum::a#2 s2#0 s3#0 sum::return#0 ]
 zp byte:3 [ sum::b#2 ]
-zp byte:4 [ s1#0 s3#0 ]
+zp byte:4 [ s1#0 ]
 
 FINAL CODE
 BBEGIN:
@@ -568,7 +552,7 @@ sum_from_BBEGIN:
   jsr sum
 B2:
   // [1] (byte) s1#0 ← (byte) sum::return#0 [ sum::return#0 s1#0 ]  //  zpby1=zpby2
-  lda 2
+  lda 7
   sta 4
 sum_from_B2:
   // (byte) sum::b#2 = (byte) 13  // zpby1=coby1
@@ -580,20 +564,20 @@ sum_from_B2:
   jsr sum
 B3:
   // [3] (byte) s2#0 ← (byte) sum::return#0 [ s1#0 s2#0 ]  //  zpby1=zpby2
-  lda 2
+  lda 7
   sta 5
-  // [4] (byte) s3#0 ← (byte) s1#0 + (byte) s2#0 [ ]  //  zpby1=zpby1_plus_zpby2
+  // [4] (byte) s3#0 ← (byte) s1#0 + (byte) s2#0 [ ]  //  zpby1=zpby2_plus_zpby3
   lda 4
   clc
   adc 5
-  sta 4
+  sta 6
 BEND:
 sum:
-  // [6] (byte) sum::return#0 ← (byte) sum::a#2 + (byte) sum::b#2 [ sum::return#0 s1#0 ]  //  zpby1=zpby1_plus_zpby2
+  // [6] (byte) sum::return#0 ← (byte) sum::a#2 + (byte) sum::b#2 [ sum::return#0 s1#0 ]  //  zpby1=zpby2_plus_zpby3
   lda 2
   clc
   adc 3
-  sta 2
+  sta 7
 sum__Breturn:
   rts
 

src/main/java/dk/camelot64/kickc/test/ref/summin.sym

@@ -7,7 +7,7 @@
 (byte) s2
 (byte) s2#0 zp byte:5 4.0
 (byte) s3
-(byte) s3#0 zp byte:4 Infinity
+(byte) s3#0 zp byte:6 Infinity
 (byte()) sum((byte) sum::a , (byte) sum::b)
 (label) sum::@return
 (byte) sum::a
@@ -15,8 +15,8 @@
 (byte) sum::b
 (byte) sum::b#2 zp byte:3 2.0
 (byte) sum::return
-(byte) sum::return#0 zp byte:2 1.2000000000000002
+(byte) sum::return#0 zp byte:7 1.2000000000000002
 
-zp byte:2 [ sum::a#2 sum::return#0 s2#0 ]
+zp byte:2 [ sum::a#2 s2#0 s3#0 sum::return#0 ]
 zp byte:3 [ sum::b#2 ]
-zp byte:4 [ s1#0 s3#0 ]
+zp byte:4 [ s1#0 ]

src/main/java/dk/camelot64/kickc/test/ref/useglobal.log

@@ -200,7 +200,6 @@ Found 0 loops in scope [main]
 NATURAL LOOPS WITH DEPTH
 
 Initial phi equivalence classes
-Copy Coalesced equivalence classes
 Complete equivalence classes
 
 VARIABLE REGISTER WEIGHTS