fixed indentation

[libfirm] / ir / tv / tv.c

diff --git a/ir/tv/tv.c b/ir/tv/tv.c
index 2e82675..eaa8886 100644 (file)
--- a/ir/tv/tv.c
+++ b/ir/tv/tv.c
@@ -168,9 +168,11 @@ static tarval *get_tarval(const void *value, int length, ir_mode *mode) {
        if (length > 0) {
                /* if there already is such a value, it is returned, else value
                 * is copied into the set */
-               char *temp = alloca(sc_get_buffer_length());
-               memcpy(temp, value, sc_get_buffer_length());
-               sign_extend(temp, mode);
+               char *temp = alloca(length);
+               memcpy(temp, value, length);
+               if (get_mode_arithmetic(mode) == irma_twos_complement) {
+                       sign_extend(temp, mode);
+               }
                tv.value = INSERT_VALUE(temp, length);
        } else {
                tv.value = value;
@@ -522,13 +524,13 @@ tarval *get_tarval_null(ir_mode *mode) {
        case irms_control_flow:
        case irms_memory:
        case irms_auxiliary:
-       case irms_internal_boolean:
                assert(0);
                break;
 
        case irms_float_number:
                return new_tarval_from_double(0.0, mode);
 
+       case irms_internal_boolean:
        case irms_int_number:
                return new_tarval_from_long(0l,  mode);
 
@@ -739,18 +741,24 @@ int tarval_is_negative(tarval *a) {
  * test if null, 1 means 'yes'
  */
 int tarval_is_null(tarval *a) {
-       ir_mode *m = get_tarval_mode(a);
-
-       return a == get_tarval_null(m);
+       return
+               a != tarval_bad &&
+               a == get_tarval_null(get_tarval_mode(a));
 }
 
 /*
  * test if one, 1 means 'yes'
  */
 int tarval_is_one(tarval *a) {
-       ir_mode *m = get_tarval_mode(a);
+       return
+               a != tarval_bad &&
+               a == get_tarval_one(get_tarval_mode(a));
+}
 
-       return a == get_tarval_one(m);
+int tarval_is_all_one(tarval *tv) {
+       return
+               tv != tarval_bad &&
+               tv == get_mode_all_one(get_tarval_mode(tv));
 }
 
 /*
@@ -1569,28 +1577,6 @@ const tarval_mode_info *get_tarval_mode_output_option(ir_mode *mode) {
        return mode->tv_priv;
 }
 
-/*
- * Identifying tarvals values for algebraic simplifications.
- *
- * Returns:
- *   - TV_CLASSIFY_NULL    for additive neutral or the NULL tarval for reference modes,
- *   - TV_CLASSIFY_ONE     for multiplicative neutral,
- *   - TV_CLASSIFY_ALL_ONE for bitwise-and neutral
- *   - TV_CLASSIFY_OTHER   else
- */
-tarval_classification_t classify_tarval(tarval *tv) {
-       if (!tv || tv == tarval_bad) return TV_CLASSIFY_OTHER;
-
-       if (tv == get_mode_null(tv->mode))
-               return TV_CLASSIFY_NULL;
-       else if (tv == get_mode_one(tv->mode))
-               return TV_CLASSIFY_ONE;
-       else if (tv == get_mode_all_one(tv->mode))
-               return TV_CLASSIFY_ALL_ONE;
-
-       return TV_CLASSIFY_OTHER;
-}
-
 /*
  * Returns non-zero if a given (integer) tarval has only one single bit
  * set.