ast_binary* ast_binary_new(lex_ctx_t ctx, int op,
ast_expression* left, ast_expression* right)
{
+ ast_binary *fold;
ast_instantiate(ast_binary, ctx, ast_binary_delete);
ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_binary_codegen);
ast_propagate_effects(self, left);
ast_propagate_effects(self, right);
+ /*
+ * Try to fold away superfluous binary operations, such as:
+ * A * 1, a + 0, etc.
+ */
+ if ((fold = (ast_binary*)fold_superfluous(left, right, op))) {
+ ast_binary_delete(self);
+ return fold;
+ }
+
if (op >= INSTR_EQ_F && op <= INSTR_GT)
self->expression.vtype = TYPE_FLOAT;
else if (op == INSTR_AND || op == INSTR_OR) {
}
else if (op == INSTR_BITAND || op == INSTR_BITOR)
self->expression.vtype = TYPE_FLOAT;
- else if (op == INSTR_MUL_VF || op == INSTR_MUL_FV)
+ else if (op == INSTR_MUL_FV || op == INSTR_MUL_FV)
self->expression.vtype = TYPE_VECTOR;
- else if (op == INSTR_MUL_V)
- self->expression.vtype = TYPE_FLOAT;
else
self->expression.vtype = left->vtype;