Improved static ASM analysis to recognize & remove several LDA/LDX/LDY of the same value.

src/main/java/dk/camelot64/kickc/asm/AsmProgramStaticRegisterValues.java

@@ -71,7 +71,21 @@ public class AsmProgramStaticRegisterValues {
          if (clobber.isClobberZ()) {
             current.setZ(null);
          }
-         if (instructionType.getMnemnonic().equals("lda") && instructionType.getAddressingMode().equals(AsmAddressingMode.IMM)) {
+         String mnemnonic = instructionType.getMnemnonic();
+         AsmAddressingMode addressingMode = instructionType.getAddressingMode();
+         if ((mnemnonic.equals("inc") || mnemnonic.equals("dec") || mnemnonic.equals("ror") || mnemnonic.equals("rol") || mnemnonic.equals("lsr") || mnemnonic.equals("asl")) && (addressingMode.equals(AsmAddressingMode.ZP) || addressingMode.equals(AsmAddressingMode.ABS))) {
+            String modParam = instruction.getParameter();
+            if(current.getaMem()!=null && current.getaMem().equals(modParam)) {
+               current.setaMem(null);
+            }
+            if(current.getxMem()!=null && current.getxMem().equals(modParam)) {
+               current.setxMem(null);
+            }
+            if(current.getyMem()!=null && current.getyMem().equals(modParam)) {
+               current.setyMem(null);
+            }
+         }
+         if (mnemnonic.equals("lda") && addressingMode.equals(AsmAddressingMode.IMM)) {
             current.setA(instruction.getParameter());
             current.setaMem(null);
             Integer immValue = getImmValue(instruction.getParameter());
@@ -80,15 +94,14 @@ public class AsmProgramStaticRegisterValues {
                current.setN(immValue > 127);
             }
          }
-         if (instructionType.getMnemnonic().equals("lda") && (instructionType.getAddressingMode().equals(AsmAddressingMode.ZP) || instructionType.getAddressingMode().equals(AsmAddressingMode.ABS))) {
+         if (mnemnonic.equals("lda") && (addressingMode.equals(AsmAddressingMode.ZP) || addressingMode.equals(AsmAddressingMode.ABS))) {
             current.setaMem(instruction.getParameter());
             current.setA(null);
          }
-         if (instructionType.getMnemnonic().equals("sta") && (instructionType.getAddressingMode().equals(AsmAddressingMode.ZP) || instructionType.getAddressingMode().equals(AsmAddressingMode.ABS))) {
+         if (mnemnonic.equals("sta") && (addressingMode.equals(AsmAddressingMode.ZP) || addressingMode.equals(AsmAddressingMode.ABS))) {
             current.setaMem(instruction.getParameter());
-            current.setA(null);
          }
-         if (instructionType.getMnemnonic().equals("ldx") && instructionType.getAddressingMode().equals(AsmAddressingMode.IMM)) {
+         if (mnemnonic.equals("ldx") && addressingMode.equals(AsmAddressingMode.IMM)) {
             current.setX(instruction.getParameter());
             current.setxMem(null);
             Integer immValue = getImmValue(instruction.getParameter());
@@ -97,15 +110,14 @@ public class AsmProgramStaticRegisterValues {
                current.setN(immValue > 127);
             }
          }
-         if (instructionType.getMnemnonic().equals("ldx") && (instructionType.getAddressingMode().equals(AsmAddressingMode.ZP) || instructionType.getAddressingMode().equals(AsmAddressingMode.ABS))) {
+         if (mnemnonic.equals("ldx") && (addressingMode.equals(AsmAddressingMode.ZP) || addressingMode.equals(AsmAddressingMode.ABS))) {
             current.setxMem(instruction.getParameter());
             current.setX(null);
          }
-         if (instructionType.getMnemnonic().equals("stx") && (instructionType.getAddressingMode().equals(AsmAddressingMode.ZP) || instructionType.getAddressingMode().equals(AsmAddressingMode.ABS))) {
+         if (mnemnonic.equals("stx") && (addressingMode.equals(AsmAddressingMode.ZP) || addressingMode.equals(AsmAddressingMode.ABS))) {
             current.setxMem(instruction.getParameter());
-            current.setX(null);
          }
-         if (instructionType.getMnemnonic().equals("ldy") && instructionType.getAddressingMode().equals(AsmAddressingMode.IMM)) {
+         if (mnemnonic.equals("ldy") && addressingMode.equals(AsmAddressingMode.IMM)) {
             current.setY(instruction.getParameter());
             current.setyMem(null);
             Integer immValue = getImmValue(instruction.getParameter());
@@ -114,34 +126,33 @@ public class AsmProgramStaticRegisterValues {
                current.setN(immValue > 127);
             }
          }
-         if (instructionType.getMnemnonic().equals("ldy") && (instructionType.getAddressingMode().equals(AsmAddressingMode.ZP) || instructionType.getAddressingMode().equals(AsmAddressingMode.ABS))) {
+         if (mnemnonic.equals("ldy") && (addressingMode.equals(AsmAddressingMode.ZP) || addressingMode.equals(AsmAddressingMode.ABS))) {
+            current.setyMem(instruction.getParameter());
+         }
+         if (mnemnonic.equals("sty") && (addressingMode.equals(AsmAddressingMode.ZP) || addressingMode.equals(AsmAddressingMode.ABS))) {
             current.setyMem(instruction.getParameter());
             current.setY(null);
          }
-         if (instructionType.getMnemnonic().equals("sty") && (instructionType.getAddressingMode().equals(AsmAddressingMode.ZP) || instructionType.getAddressingMode().equals(AsmAddressingMode.ABS))) {
+         if (mnemnonic.equals("txa")) {
-            current.setyMem(instruction.getParameter());
-            current.setY(null);
-         }
-         if (instructionType.getMnemnonic().equals("txa")) {
             current.setA(current.getX());
             current.setaMem(current.getxMem());
          }
-         if (instructionType.getMnemnonic().equals("tax")) {
+         if (mnemnonic.equals("tax")) {
             current.setX(current.getA());
             current.setxMem(current.getaMem());
          }
-         if (instructionType.getMnemnonic().equals("tya")) {
+         if (mnemnonic.equals("tya")) {
             current.setA(current.getY());
             current.setaMem(current.getyMem());
          }
-         if (instructionType.getMnemnonic().equals("tay")) {
+         if (mnemnonic.equals("tay")) {
             current.setY(current.getA());
             current.setyMem(current.getaMem());
          }
-         if (instructionType.getMnemnonic().equals("sec")) {
+         if (mnemnonic.equals("sec")) {
             current.setC(Boolean.TRUE);
          }
-         if (instructionType.getMnemnonic().equals("clc")) {
+         if (mnemnonic.equals("clc")) {
             current.setC(Boolean.FALSE);
          }
       }

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

@@ -43,13 +43,10 @@ lines: {
     ldx l
     lda lines_x,x
     tay
-    ldx l
     lda lines_x+1,x
     sta _2
-    ldx l
     lda lines_y,x
     sta _3
-    ldx l
     lda lines_y+1,x
     tax
     sty line.x0

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

@@ -16906,6 +16906,9 @@ init_screen: {
 }
 
 Removing instruction lda #0
+Removing instruction ldx l
+Removing instruction ldx l
+Removing instruction ldx l
 Removing instruction lda yd
 Removing instruction lda yd
 Removing instruction lda yd
@@ -17014,15 +17017,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 
@@ -17979,15 +17979,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 
@@ -18911,15 +18908,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 
@@ -19753,15 +19747,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 
@@ -20594,15 +20585,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 
@@ -21438,15 +21426,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 
@@ -22274,15 +22259,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 
@@ -23109,15 +23091,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 
@@ -24281,15 +24260,12 @@ lines: {
     lda lines_x,x
     tay
   //SEG34 [18] (byte~) lines::$2 ← (const byte[]) lines_x#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_x+1,x
     sta _2
   //SEG35 [19] (byte~) lines::$3 ← (const byte[]) lines_y#0 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 ] ) -- zpby1=cowo1_derefidx_zpby2 
-    ldx l
     lda lines_y,x
     sta _3
   //SEG36 [20] (byte~) lines::$5 ← (const byte[]) lines_y#0+(byte/signed byte/word/signed word) 1 *idx (byte) lines::l#2 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ( main:2::lines:12 [ lines::l#2 lines::$0 lines::$2 lines::$3 lines::$5 ] ) -- xby=cowo1_derefidx_zpby1 
-    ldx l
     lda lines_y+1,x
     tax
   //SEG37 [21] (byte) line::x0#0 ← (byte~) lines::$0 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ( main:2::lines:12 [ lines::l#2 lines::$2 lines::$3 lines::$5 line::x0#0 ] ) -- zpby1=yby 

src/main/java/dk/camelot64/kickc/test/ref/bitmap-plotter.asm

@@ -47,7 +47,6 @@ plots: {
     ldx i
     lda plots_x,x
     tay
-    ldx i
     lda plots_y,x
     tax
     jsr plot

src/main/java/dk/camelot64/kickc/test/ref/bitmap-plotter.log

@@ -6553,6 +6553,7 @@ init_screen: {
 }
 
 Removing instruction lda #0
+Removing instruction ldx i
 Removing instruction ldy #0
 Removing instruction lda #>0
 Replacing instruction ldx #0 with TAX
@@ -6663,7 +6664,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y
@@ -7035,7 +7035,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y
@@ -7387,7 +7386,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y
@@ -7709,7 +7707,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y
@@ -8030,7 +8027,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y
@@ -8354,7 +8350,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y
@@ -8670,7 +8665,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y
@@ -8985,7 +8979,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y
@@ -9433,7 +9426,6 @@ plots: {
     lda plots_x,x
     tay
   //SEG37 [20] (byte~) plots::$1 ← (const byte[]) plots_y#0 *idx (byte) plots::i#2 [ plots::i#2 plots::$0 plots::$1 ] ( main:2::plots:13 [ plots::i#2 plots::$0 plots::$1 ] ) -- aby=cowo1_derefidx_zpby1 
-    ldx i
     lda plots_y,x
   //SEG38 [21] (byte) plot::x#0 ← (byte~) plots::$0 [ plots::i#2 plots::$1 plot::x#0 ] ( main:2::plots:13 [ plots::i#2 plots::$1 plot::x#0 ] )
     // (byte) plot::x#0 = (byte~) plots::$0  // register copy reg byte y

src/main/java/dk/camelot64/kickc/test/ref/sinus-sprites.asm

@@ -71,7 +71,6 @@ anim: {
     ldx j2
     sta SPRITES_XPOS,x
     lda sintab_y,y
-    ldx j2
     sta SPRITES_YPOS,x
     lda xidx
     clc