X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firmode.c;h=8e2752bcbcd0179620504ac085d4958f75c2db6a;hb=fed1bdc07c9ec7b4d07a9243ad093c9fdd239fbd;hp=95a6e55b428930c8318d60d56cc7af1a01c420f1;hpb=a94cba60b644054b5f9f1983a6bd9d3f2d6f9142;p=libfirm

diff --git a/ir/ir/irmode.c b/ir/ir/irmode.c
index 95a6e55b4..8e2752bcb 100644
--- a/ir/ir/irmode.c
+++ b/ir/ir/irmode.c
@@ -22,10 +22,12 @@
 
 # include <stddef.h>
 
+# include "irprog_t.h"
 # include "irmode_t.h"
 # include "ident.h"
-# include "tv.h"
+# include "tv_t.h"
 # include "obst.h"
+# include "irhooks.h"
 
 #if 0
 static long long count = 0;
@@ -130,33 +132,37 @@ static void set_mode_values(ir_mode* mode)
     case irms_character:
     case irms_int_number:
     case irms_float_number:
-      mode->min = get_tarval_min(mode);
-      mode->max = get_tarval_max(mode);
+      mode->min  = get_tarval_min(mode);
+      mode->max  = get_tarval_max(mode);
       mode->null = get_tarval_null(mode);
-      mode->one = get_tarval_one(mode);
+      mode->one  = get_tarval_one(mode);
+      mode->minus_one = get_tarval_minus_one(mode);
       break;
 
     case irms_internal_boolean:
-      mode->min = tarval_b_false;
-      mode->max = tarval_b_true;
+      mode->min  = tarval_b_false;
+      mode->max  = tarval_b_true;
       mode->null = tarval_b_false;
-      mode->one = tarval_b_true;
+      mode->one  = tarval_b_true;
+      mode->minus_one = tarval_bad;
       break;
 
     case irms_reference:
-      mode->min = tarval_bad;
-      mode->max = tarval_bad;
-      mode->null = (get_mode_modecode(mode) == irm_P) ? tarval_P_void : tarval_bad;
-      mode->one = tarval_bad;
+      mode->min  = tarval_bad;
+      mode->max  = tarval_bad;
+      mode->null = get_tarval_null(mode);
+      mode->one  = tarval_bad;
+      mode->minus_one = tarval_bad;
       break;
 
     case irms_auxiliary:
     case irms_memory:
     case irms_control_flow:
-      mode->min = tarval_bad;
-      mode->max = tarval_bad;
+      mode->min  = tarval_bad;
+      mode->max  = tarval_bad;
       mode->null = tarval_bad;
-      mode->one = tarval_bad;
+      mode->one  = tarval_bad;
+      mode->minus_one = tarval_bad;
       break;
   }
 }
@@ -195,44 +201,57 @@ ir_mode *mode_b;
 ir_mode *mode_P;
 
 /* machine specific modes */
-ir_mode *mode_P_mach;	/* machine specific pointer mode */
+ir_mode *mode_P_code;	/**< machine specific pointer mode for code addresses */
+ir_mode *mode_P_data;	/**< machine specific pointer mode for data addresses */
 
 /* * *
  * functions defined in irmode.h
  * * */
 
 /* JNI access functions */
-INLINE ir_mode *get_modeT(void) { ANNOUNCE(); return mode_T; }
-INLINE ir_mode *get_modeF(void) { ANNOUNCE(); return mode_F; }
-INLINE ir_mode *get_modeD(void) { ANNOUNCE(); return mode_D; }
-INLINE ir_mode *get_modeE(void) { ANNOUNCE(); return mode_E; }
-INLINE ir_mode *get_modeBs(void) { ANNOUNCE(); return mode_Bs; }
-INLINE ir_mode *get_modeBu(void) { ANNOUNCE(); return mode_Bu; }
-INLINE ir_mode *get_modeHs(void) { ANNOUNCE(); return mode_Hs; }
-INLINE ir_mode *get_modeHu(void) { ANNOUNCE(); return mode_Hu; }
-INLINE ir_mode *get_modeIs(void) { ANNOUNCE(); return mode_Is; }
-INLINE ir_mode *get_modeIu(void) { ANNOUNCE(); return mode_Iu; }
-INLINE ir_mode *get_modeLs(void) { ANNOUNCE(); return mode_Ls; }
-INLINE ir_mode *get_modeLu(void) { ANNOUNCE(); return mode_Lu; }
-INLINE ir_mode *get_modeC(void) { ANNOUNCE(); return mode_C; }
-INLINE ir_mode *get_modeU(void) { ANNOUNCE(); return mode_U; }
-INLINE ir_mode *get_modeb(void) { ANNOUNCE(); return mode_b; }
-INLINE ir_mode *get_modeP(void) { ANNOUNCE(); return mode_P; }
-INLINE ir_mode *get_modeX(void) { ANNOUNCE(); return mode_X; }
-INLINE ir_mode *get_modeM(void) { ANNOUNCE(); return mode_M; }
-INLINE ir_mode *get_modeBB(void) { ANNOUNCE(); return mode_BB; }
-INLINE ir_mode *get_modeANY(void) { ANNOUNCE(); return mode_ANY; }
-INLINE ir_mode *get_modeBAD(void) { ANNOUNCE(); return mode_BAD; }
+ir_mode *get_modeT(void) { ANNOUNCE(); return mode_T; }
+ir_mode *get_modeF(void) { ANNOUNCE(); return mode_F; }
+ir_mode *get_modeD(void) { ANNOUNCE(); return mode_D; }
+ir_mode *get_modeE(void) { ANNOUNCE(); return mode_E; }
+ir_mode *get_modeBs(void) { ANNOUNCE(); return mode_Bs; }
+ir_mode *get_modeBu(void) { ANNOUNCE(); return mode_Bu; }
+ir_mode *get_modeHs(void) { ANNOUNCE(); return mode_Hs; }
+ir_mode *get_modeHu(void) { ANNOUNCE(); return mode_Hu; }
+ir_mode *get_modeIs(void) { ANNOUNCE(); return mode_Is; }
+ir_mode *get_modeIu(void) { ANNOUNCE(); return mode_Iu; }
+ir_mode *get_modeLs(void) { ANNOUNCE(); return mode_Ls; }
+ir_mode *get_modeLu(void) { ANNOUNCE(); return mode_Lu; }
+ir_mode *get_modeC(void) { ANNOUNCE(); return mode_C; }
+ir_mode *get_modeU(void) { ANNOUNCE(); return mode_U; }
+ir_mode *get_modeb(void) { ANNOUNCE(); return mode_b; }
+ir_mode *get_modeP(void) { ANNOUNCE(); return mode_P; }
+ir_mode *get_modeX(void) { ANNOUNCE(); return mode_X; }
+ir_mode *get_modeM(void) { ANNOUNCE(); return mode_M; }
+ir_mode *get_modeBB(void) { ANNOUNCE(); return mode_BB; }
+ir_mode *get_modeANY(void) { ANNOUNCE(); return mode_ANY; }
+ir_mode *get_modeBAD(void) { ANNOUNCE(); return mode_BAD; }
 
 
-ir_mode *(get_modeP_mach)(void) {
+ir_mode *(get_modeP_code)(void) {
   ANNOUNCE();
-  return __get_modeP_mach();
+  return _get_modeP_code();
 }
 
-void (set_modeP_mach)(ir_mode *p) {
+ir_mode *(get_modeP_data)(void) {
   ANNOUNCE();
-  __set_modeP_mach(p);
+  return _get_modeP_data();
+}
+
+void set_modeP_code(ir_mode *p) {
+  assert(mode_is_reference(p));
+
+  mode_P_code = p;
+}
+
+void set_modeP_data(ir_mode *p) {
+  assert(mode_is_reference(p));
+
+  mode_P_data = p;
 }
 
 /**
@@ -240,7 +259,7 @@ void (set_modeP_mach)(ir_mode *p) {
  *
  * @param new_mode  The new mode template.
  */
-static ir_mode *register_mode(const ir_mode* new_mode)
+static ir_mode *register_mode(const ir_mode *new_mode)
 {
   ir_mode *mode = NULL;
 
@@ -248,14 +267,18 @@ static ir_mode *register_mode(const ir_mode* new_mode)
   assert(new_mode);
 
   /* copy mode struct to modes array */
-  mode = (ir_mode*)obstack_copy(&modes, new_mode, sizeof(ir_mode));
+  mode = (ir_mode *)obstack_copy(&modes, new_mode, sizeof(*mode));
 
   mode->kind = k_ir_mode;
   if (num_modes >= irm_max) mode->code = num_modes;
   num_modes++;
 
+  /* add the new mode to the irp list of modes */
+  add_irp_mode(mode);
+
   set_mode_values(mode);
 
+  hook_new_mode(new_mode, mode);
   return mode;
 }
 
@@ -266,7 +289,7 @@ ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int sign,
 		     mode_arithmetic arithmetic, unsigned int modulo_shift )
 {
   ir_mode mode_tmpl;
-  ir_mode *mode;
+  ir_mode *mode = NULL;
 
   mode_tmpl.name         = new_id_from_str(name);
   mode_tmpl.sort         = sort;
@@ -279,8 +302,8 @@ ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int sign,
   mode_tmpl.tv_priv      = NULL;
 
   mode = find_mode(&mode_tmpl);
-  if (mode)
-  {
+  if (mode) {
+    hook_new_mode(&mode_tmpl, mode);
     return mode;
   }
 
@@ -292,15 +315,15 @@ ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int sign,
     case irms_memory:
     case irms_internal_boolean:
       assert(0 && "internal modes cannot be user defined");
-      return NULL;
+      break;
 
     case irms_float_number:
     case irms_int_number:
     case irms_reference:
     case irms_character:
-      return register_mode(&mode_tmpl);
+      mode = register_mode(&mode_tmpl);
   }
-  return NULL; /* to shut up gcc */
+  return mode;
 }
 
 /*
@@ -310,7 +333,7 @@ ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsi
 		     mode_arithmetic arithmetic, unsigned int modulo_shift )
 {
   ir_mode mode_tmpl;
-  ir_mode *mode;
+  ir_mode *mode = NULL;
 
   mode_tmpl.name         = new_id_from_str(name);
   mode_tmpl.sort         = sort;
@@ -323,8 +346,10 @@ ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsi
   mode_tmpl.tv_priv      = NULL;
 
   mode = find_mode(&mode_tmpl);
-  if (mode)
+  if (mode) {
+    hook_new_mode(&mode_tmpl, mode);
     return mode;
+  }
 
   if (num_of_elem <= 1) {
     assert(0 && "vector modes should have at least 2 elements");
@@ -339,36 +364,36 @@ ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsi
     case irms_memory:
     case irms_internal_boolean:
       assert(0 && "internal modes cannot be user defined");
-      return NULL;
+      break;
 
     case irms_reference:
     case irms_character:
       assert(0 && "only integer and floating point modes can be vectorized");
-      return NULL;
+      break;
 
     case irms_float_number:
       assert(0 && "not yet implemented");
-      return NULL;
+      break;
 
     case irms_int_number:
-      return register_mode(&mode_tmpl);
+      mode = register_mode(&mode_tmpl);
   }
-  return NULL; /* to shut up gcc */
+  return mode;
 }
 
-/* Functions for the direct access to all attributes od a ir_mode */
+/* Functions for the direct access to all attributes of an ir_mode */
 modecode
 (get_mode_modecode)(const ir_mode *mode)
 {
   ANNOUNCE();
-  return __get_mode_modecode(mode);
+  return _get_mode_modecode(mode);
 }
 
 ident *
 (get_mode_ident)(const ir_mode *mode)
 {
   ANNOUNCE();
-  return __get_mode_ident(mode);
+  return _get_mode_ident(mode);
 }
 
 const char *
@@ -382,27 +407,27 @@ mode_sort
 (get_mode_sort)(const ir_mode* mode)
 {
   ANNOUNCE();
-  return __get_mode_sort(mode);
+  return _get_mode_sort(mode);
 }
 
 int
 (get_mode_size_bits)(const ir_mode *mode)
 {
   ANNOUNCE();
-  return __get_mode_size_bits(mode);
+  return _get_mode_size_bits(mode);
 }
 
 int
 (get_mode_size_bytes)(const ir_mode *mode) {
   ANNOUNCE();
-  return __get_mode_size_bytes(mode);
+  return _get_mode_size_bytes(mode);
 }
 
 int
 (get_mode_sign)(const ir_mode *mode)
 {
   ANNOUNCE();
-  return __get_mode_sign(mode);
+  return _get_mode_sign(mode);
 }
 
 int
@@ -419,25 +444,25 @@ int
  */
 unsigned int
 (get_mode_modulo_shift)(const ir_mode *mode) {
-  return __get_mode_modulo_shift(mode);
+  return _get_mode_modulo_shift(mode);
 }
 
 unsigned int
 (get_mode_n_vector_elems)(const ir_mode *mode) {
-  return __get_mode_vector_elems(mode);
+  return _get_mode_vector_elems(mode);
 }
 
 void *
 (get_mode_link)(const ir_mode *mode)
 {
   ANNOUNCE();
-  return __get_mode_link(mode);
+  return _get_mode_link(mode);
 }
 
 void
 (set_mode_link)(ir_mode *mode, void *l)
 {
-  __set_mode_link(mode, l);
+  _set_mode_link(mode, l);
 }
 
 tarval *
@@ -484,6 +509,17 @@ get_mode_one (ir_mode *mode)
   return mode->one;
 }
 
+tarval *
+get_mode_minus_one (ir_mode *mode)
+{
+  ANNOUNCE();
+  assert(mode);
+  assert(get_mode_modecode(mode) < num_modes);
+  assert(mode_is_data(mode));
+
+  return mode->minus_one;
+}
+
 tarval *
 get_mode_infinite(ir_mode *mode)
 {
@@ -517,73 +553,73 @@ is_mode (void *thing) {
 int
 (mode_is_signed)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_signed(mode);
+  return _mode_is_signed(mode);
 }
 
 int
 (mode_is_float)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_float(mode);
+  return _mode_is_float(mode);
 }
 
 int
 (mode_is_int)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_int(mode);
+  return _mode_is_int(mode);
 }
 
 int
 (mode_is_character)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_character(mode);
+  return _mode_is_character(mode);
 }
 
 int
 (mode_is_reference)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_reference(mode);
+  return _mode_is_reference(mode);
 }
 
 int
 (mode_is_num)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_num(mode);
+  return _mode_is_num(mode);
 }
 
 int
 (mode_is_numP)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_numP(mode);
+  return _mode_is_numP(mode);
 }
 
 int
 (mode_is_data)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_data(mode);
+  return _mode_is_data(mode);
 }
 
 int
 (mode_is_datab)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_datab(mode);
+  return _mode_is_datab(mode);
 }
 
 int
 (mode_is_dataM)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_dataM(mode);
+  return _mode_is_dataM(mode);
 }
 
 int
 (mode_is_float_vector)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_float_vector(mode);
+  return _mode_is_float_vector(mode);
 }
 
 int
 (mode_is_int_vector)(const ir_mode *mode) {
   ANNOUNCE();
-  return __mode_is_int_vector(mode);
+  return _mode_is_int_vector(mode);
 }
 
 /* Returns true if sm can be converted to lm without loss. */
@@ -848,14 +884,14 @@ init_mode (void)
 
   /* Character Modes */
   newmode.sort         = irms_character;
-  newmode.arithmetic   = irma_none;
+  newmode.arithmetic   = irma_twos_complement;
+  newmode.modulo_shift = 0;
 
   /* Character */
   newmode.name         = new_id_from_chars("C", 1);
   newmode.code         = irm_C;
   newmode.sign         = 0;
   newmode.size         = 8;
-  newmode.modulo_shift = 32;
 
   mode_C = register_mode(&newmode);
 
@@ -864,7 +900,6 @@ init_mode (void)
   newmode.code         = irm_U;
   newmode.sign         = 0;
   newmode.size         = 16;
-  newmode.modulo_shift = 32;
 
   mode_U = register_mode(&newmode);
 
@@ -881,8 +916,9 @@ init_mode (void)
 
   mode_P = register_mode(&newmode);
 
-  /* set the machine specific modes to the predifined ones */
-  mode_P_mach = mode_P;
+  /* set the machine specific modes to the predefined ones */
+  mode_P_code = mode_P;
+  mode_P_data = mode_P;
 }
 
 /* find a signed mode for an unsigned integer mode */
@@ -913,33 +949,72 @@ ir_mode *find_double_bits_int_mode(const ir_mode *mode) {
   return find_mode(&n);
 }
 
+/*
+ * Returns non-zero if the given mode honors signed zero's, i.e.,
+ * a +0 and a -0 exists and handled differently.
+ */
+int mode_honor_signed_zeros(const ir_mode *mode)
+{
+  /* for floating point, we know that IEEE 754 has +0 and -0,
+   * but always handles it identical.
+   */
+  if (mode->sort == irms_float_number)
+    return mode->arithmetic == irma_ieee754 ? 0 : 1;
+  return 0;
+}
+
+/*
+ * Returns non-zero if the given mode might overflow on unary Minus.
+ *
+ * This does NOT happen on IEEE 754.
+ */
+int mode_overflow_on_unary_Minus(const ir_mode *mode)
+{
+  if (mode->sort == irms_float_number)
+    return mode->arithmetic == irma_ieee754 ? 0 : 1;
+  return 1;
+}
+
+/*
+ * Returns non-zero if the mode has a reversed wrap-aound
+ * logic, especially (a + x) - x == a.
+ *
+ * This is normally true for integer modes, not for floating
+ * point modes.
+ */
+int mode_wrap_around(const ir_mode *mode) {
+  /* FIXME: better would be an extra mode property */
+  return mode_is_int(mode);
+}
+
 void finish_mode(void) {
   obstack_free(&modes, 0);
 
-  mode_T = NULL;
-  mode_X = NULL;
-  mode_M = NULL;
-  mode_BB = NULL;
+  mode_T   = NULL;
+  mode_X   = NULL;
+  mode_M   = NULL;
+  mode_BB  = NULL;
   mode_ANY = NULL;
   mode_BAD = NULL;
 
-  mode_F = NULL;
-  mode_D = NULL;
-  mode_E = NULL;
-
-  mode_Bs = NULL;
-  mode_Bu = NULL;
-  mode_Hs = NULL;
-  mode_Hu = NULL;
-  mode_Is = NULL;
-  mode_Iu = NULL;
-  mode_Ls = NULL;
-  mode_Lu = NULL;
-
-  mode_C = NULL;
-  mode_U = NULL;
-  mode_b = NULL;
-  mode_P = NULL;
-
-  mode_P_mach = NULL;
+  mode_F   = NULL;
+  mode_D   = NULL;
+  mode_E   = NULL;
+
+  mode_Bs  = NULL;
+  mode_Bu  = NULL;
+  mode_Hs  = NULL;
+  mode_Hu  = NULL;
+  mode_Is  = NULL;
+  mode_Iu  = NULL;
+  mode_Ls  = NULL;
+  mode_Lu  = NULL;
+
+  mode_C   = NULL;
+  mode_U   = NULL;
+  mode_b   = NULL;
+  mode_P   = NULL;
+
+  mode_P_code = NULL;
+  mode_P_data = NULL;
 }