Working on improving constants.kc. Now everything works except allocation to asby (where clobber by a-register is not detected.)

src/main/java/dk/camelot64/kickc/passes/Pass5NextJumpElimination.java

@@ -20,6 +20,9 @@ public class Pass5NextJumpElimination extends Pass5AsmOptimization {
       AsmInstruction candidate = null;
       for (AsmSegment segment : getAsmProgram().getSegments()) {
          for (AsmLine line : segment.getLines()) {
+            if(line instanceof AsmScopeBegin || line instanceof AsmScopeEnd) {
+               candidate = null;
+            }
             if (candidate != null) {
                if (line instanceof AsmLabel) {
                   if (((AsmLabel) line).getLabel().equals(candidate.getParameter())) {

src/main/java/dk/camelot64/kickc/test/constants.kc

@@ -3,6 +3,7 @@ const byte GREEN = 5;
 const byte RED = 2 ;
 
 void main() {
+    print_cls();
     *BGCOL = GREEN;
     test_bytes();
     test_sbytes();
@@ -11,35 +12,72 @@ void main() {
 // Test different byte constants
 void test_bytes() {
     byte bb=0;
-    assert_byte(bb, 0);
+    assert_byte("0=0@", bb, 0);
     byte bc=bb+2;
-    assert_byte(bc, 2);
+    assert_byte("0+2=2@", bc, 2);
     byte bd=bc-4;
-    assert_byte(bd, 254);
+    assert_byte("0+2-4=254@", bd, 254);
 }
 
-void assert_byte(byte b, byte c) {
+void assert_byte(byte* msg, byte b, byte c) {
+    print_str(msg);
+    print_str(" @");
     if(b!=c) {
         *BGCOL = RED;
+        print_str("fail!@");
+    } else {
+        print_str("ok@");
     }
+    print_ln();
 }
 
 // Test different signed byte constants
 void test_sbytes() {
     signed byte bb=0;
-    assert_sbyte(bb, 0);
+    assert_sbyte("0=0@", bb, 0);
     signed byte bc=bb+2;
-    assert_sbyte(bc, 2);
+    assert_sbyte("0+2=2@", bc, 2);
     signed byte bd=bc-4;
-    assert_sbyte(bd, -2);
+    assert_sbyte("0+2-4=-2@", bd, -2);
     signed byte be=-bd;
-    assert_sbyte(be, 2);
+    assert_sbyte("-(0+2-4)=2@", be, 2);
     signed byte bf=-127-127;
-    assert_sbyte(bf, 2);
+    assert_sbyte("-127-127=2@", bf, 2);
 }
 
-void assert_sbyte(signed byte b, signed byte c) {
+void assert_sbyte(byte* msg, signed byte b, signed byte c) {
+    print_str(msg);
+    print_str(" @");
     if(b!=c) {
         *BGCOL = RED;
+        print_str("fail!@");
+    } else {
+        print_str("ok@");
+    }
+    print_ln();
+}
+
+byte* line_cursor = $0400;
+byte* char_cursor = line_cursor;
+
+// Print a zero-terminated string
+void print_str(byte* str) {
+    while(*str!='@') {
+        *(char_cursor++) = *(str++);
+    }
+}
+
+// Print a newline
+void print_ln() {
+    do {
+        line_cursor = line_cursor + $28;
+    } while (line_cursor<char_cursor);
+    char_cursor = line_cursor;
+}
+
+// Clear the screen
+void print_cls() {
+    for(byte* sc=$0400; sc!=$0400+1000; sc++) {
+        *sc = ' ';
     }
 }

src/main/java/dk/camelot64/kickc/test/print.kc

@@ -29,8 +29,3 @@ void print_ln() {
     } while (line_cursor<char_cursor);
     char_cursor = line_cursor;
 }
-
-
-
-
-