sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 26 insertions, 0 deletions

diff --git a/src/regression/pcodeopt.c b/src/regression/pcodeopt.c
new file mode 100644
index 0000000..8be5a2a
--- /dev/null
+++ b/src/regression/pcodeopt.c
@@ -0,0 +1,26 @@
+#include "gpsim_assert.h"
+
+/*
+ * Test for buggy pCode optimization on
+ *    CLRF reg	; pc1
+ *    ...
+ *    MOVF reg,W	; pc2
+ *
+ * Originally, both instructions were removed and pc2 replaced with
+ *    CLRF reg          iff reg was used afterwards, but Z and W were not, or
+ *    MOVLW 0           iff reg and Z were not used afterwards, but W was.
+ * Detection of W being used used to be buggy, though...
+ */
+signed int x=0;
+unsigned char y=1;
+
+void main() {
+    x += y;
+    x += y;
+    if (x != 2) { FAILED(); }
+    if (y != 1) { FAILED(); }
+    //ASSERT(MANGLE(x) == 2);
+    //ASSERT(MANGLE(y) == 1);
+    PASSED();
+}
+