* doc/include/gcc-common.texi (version-GCC): Increase to 3.3.

[pf3gnuchains/gcc-fork.git] / gcc / rtl.h

diff --git a/gcc/rtl.h b/gcc/rtl.h
index 0b7a874..f14465f 100644 (file)
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -89,6 +89,9 @@ typedef struct
    so MEMs that the same attributes share a data structure.  This means
    they cannot be modified in place.  If any element is nonzero, it means
    the value of the corresponding attribute is unknown.  */
+/* ALIGN and SIZE are the alignment and size of the MEM itself,
+   while EXPR can describe a larger underlying object, which might have a
+   stricter alignment; OFFSET is the offset of the MEM within that object.  */
 typedef struct mem_attrs GTY(())
 {
   HOST_WIDE_INT alias;         /* Memory alias set.  */
@@ -130,9 +133,10 @@ struct rtx_def
   /* 1 in a MEM if we should keep the alias set for this mem unchanged
      when we access a component.
      1 in a CALL_INSN if it is a sibling call.
-     1 in a SET that is for a return.  */
+     1 in a SET that is for a return.
+     In a CODE_LABEL, part of the two-bit alternate entry field.  */
   unsigned int jump : 1;
-  /* This flag is currently unused.  */
+  /* In a CODE_LABEL, part of the two-bit alternate entry field.  */
   unsigned int call : 1;
   /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
      1 in a SUBREG if it references an unsigned object whose mode has been
@@ -876,8 +880,55 @@ extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS];
    of LABEL_REFs that point at it, so unused labels can be deleted.  */
 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
 
-/* Associate a name with a CODE_LABEL.  */
-#define LABEL_ALTERNATE_NAME(RTX) XCSTR (RTX, 8, CODE_LABEL)
+/* Labels carry a two-bit field composed of the ->jump and ->call
+   bits.  This field indicates whether the label is an alternate
+   entry point, and if so, what kind.  */
+enum label_kind
+{
+  LABEL_NORMAL = 0,    /* ordinary label */
+  LABEL_STATIC_ENTRY,  /* alternate entry point, not exported */
+  LABEL_GLOBAL_ENTRY,  /* alternate entry point, exported */
+  LABEL_WEAK_ENTRY     /* alternate entry point, exported as weak symbol */
+};
+
+#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
+
+/* Retrieve the kind of LABEL.  */
+#define LABEL_KIND(LABEL) __extension__                                        \
+({ rtx const _label = (LABEL);                                         \
+   if (GET_CODE (_label) != CODE_LABEL)                                        \
+     rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__,  \
+                           __FUNCTION__);                              \
+   (enum label_kind) ((_label->jump << 1) | _label->call); })
+
+/* Set the kind of LABEL.  */
+#define SET_LABEL_KIND(LABEL, KIND) do {                               \
+   rtx _label = (LABEL);                                               \
+   unsigned int _kind = (KIND);                                                \
+   if (GET_CODE (_label) != CODE_LABEL)                                        \
+     rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
+                           __FUNCTION__);                              \
+   _label->jump = ((_kind >> 1) & 1);                                  \
+   _label->call = (_kind & 1);                                         \
+} while (0)
+
+#else
+
+/* Retrieve the kind of LABEL.  */
+#define LABEL_KIND(LABEL) \
+   ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
+
+/* Set the kind of LABEL.  */
+#define SET_LABEL_KIND(LABEL, KIND) do {                               \
+   rtx _label = (LABEL);                                               \
+   unsigned int _kind = (KIND);                                                \
+   _label->jump = ((_kind >> 1) & 1);                                  \
+   _label->call = (_kind & 1);                                         \
+} while (0)
+
+#endif /* rtl flag checking */
+
+#define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
 
 /* The original regno this ADDRESSOF was built for.  */
 #define ADDRESSOF_REGNO(RTX) XCUINT (RTX, 1, ADDRESSOF)
@@ -1414,6 +1465,9 @@ extern rtx next_label                     PARAMS ((rtx));
 extern rtx next_cc0_user               PARAMS ((rtx));
 extern rtx prev_cc0_setter             PARAMS ((rtx));
 
+/* In cfglayout.c  */
+extern tree choose_inner_scope         PARAMS ((tree, tree));
+
 /* In jump.c */
 extern rtx next_nondeleted_insn                PARAMS ((rtx));
 extern enum rtx_code reverse_condition PARAMS ((enum rtx_code));
@@ -1709,6 +1763,7 @@ extern GTY(()) rtx return_address_pointer_rtx;
    should also modify gen_rtx to use the special function.  */
 
 extern rtx gen_rtx_CONST_INT PARAMS ((enum machine_mode, HOST_WIDE_INT));
+extern rtx gen_rtx_CONST_VECTOR PARAMS ((enum machine_mode, rtvec));
 extern rtx gen_raw_REG PARAMS ((enum machine_mode, int));
 extern rtx gen_rtx_REG PARAMS ((enum machine_mode, unsigned));
 extern rtx gen_rtx_SUBREG PARAMS ((enum machine_mode, rtx, int));