Issue error if &=, |=, ^=, <<=, or >>= used with floats.

expr.cpp

@@ -2623,6 +2623,14 @@ AssignExpr::TypeCheck() {
     if (rvalue == NULL)
         return NULL;
 
+    if (lhsType->IsFloatType() == true &&
+        (op == ShlAssign || op == ShrAssign || op == AndAssign || 
+         op == XorAssign || op == OrAssign)) {
+            Error(pos, "Illegal to use %s operator with floating-point "
+                  "operands.", lOpString(op));
+            return NULL;
+    }
+
     // Make sure we're not assigning to a struct that has a constant member
     const StructType *st = dynamic_cast<const StructType *>(lhsType);
     if (st != NULL && lCheckForConstStructMember(pos, st, st))

tests_errors/float-logical-1.ispc

@@ -0,0 +1,5 @@
+// First operand to binary operator "&" must be an integer or bool
+
+float foo(float a, float b) {
+    return a & b;
+}

tests_errors/float-logical.ispc

@@ -0,0 +1,5 @@
+// Illegal to use ^= operator with floating-point
+
+float foo(float a, float b) {
+    return a ^= b;
+}