BugFix: crashed when gen_imm_Sub got SymConst instead of Const (broken tarval)

diff --git a/ir/be/ia32/ia32_transform.c b/ir/be/ia32/ia32_transform.c
index 2569c83..ee488d8 100644 (file)
--- a/ir/be/ia32/ia32_transform.c
+++ b/ir/be/ia32/ia32_transform.c
@@ -515,7 +515,7 @@ static ir_node *gen_imm_Add(ia32_transform_env_t *env, ir_node *expr_op, ir_node
        DEBUG_ONLY(firm_dbg_module_t *mod = env->mod;)
 
        /* try to optimize to inc/dec  */
-       if ((env->cg->opt & IA32_OPT_INCDEC) && (get_ia32_op_type(const_op) == ia32_Const)) {
+       if ((env->cg->opt & IA32_OPT_INCDEC) && tv && (get_ia32_op_type(const_op) == ia32_Const)) {
                /* optimize tarvals */
                class_tv    = classify_tarval(tv);
                class_negtv = classify_tarval(tarval_neg(tv));
@@ -839,7 +839,7 @@ static ir_node *gen_imm_Sub(ia32_transform_env_t *env, ir_node *expr_op, ir_node
        DEBUG_ONLY(firm_dbg_module_t *mod = env->mod;)
 
        /* try to optimize to inc/dec  */
-       if ((env->cg->opt & IA32_OPT_INCDEC) && tv) {
+       if ((env->cg->opt & IA32_OPT_INCDEC) && tv && (get_ia32_op_type(const_op) == ia32_Const)) {
                /* optimize tarvals */
                class_tv    = classify_tarval(tv);
                class_negtv = classify_tarval(tarval_neg(tv));