ability to compare booleans

src/codegen.cpp

@@ -1543,7 +1543,8 @@ static LLVMValueRef gen_cmp_expr(CodeGen *g, AstNode *node) {
             zig_unreachable();
         }
     } else if (op1_type->id == TypeTableEntryIdPureError ||
-               op1_type->id == TypeTableEntryIdPointer)
+               op1_type->id == TypeTableEntryIdPointer ||
+               op1_type->id == TypeTableEntryIdBool)
     {
         LLVMIntPredicate pred = cmp_op_to_int_predicate(node->data.bin_op_expr.bin_op, false);
         return LLVMBuildICmp(g->builder, pred, val1, val2, "");

test/self_hosted.zig

@@ -1368,3 +1368,11 @@ error NoMem;
 error CrappedOut;
 #static_eval_enable(false)
 fn returns_ten() -> %i32 { 10 }
+
+
+#attribute("test")
+fn bool_cmp() {
+    assert(test_bool_cmp(true, false) == false);
+}
+#static_eval_enable(false)
+fn test_bool_cmp(a: bool, b: bool) -> bool { a == b }