Remove spurious ChangeLog entry

[pf3gnuchains/gcc-fork.git] / gcc / target.def

diff --git a/gcc/target.def b/gcc/target.def
index ce01faa..6137e97 100644 (file)
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -1242,6 +1242,17 @@ DEFHOOK
  void, (void),
  hook_void_void)
 
+ /* Add a __gnu_ prefix to library functions rather than just __.  */
+DEFHOOKPOD
+(libfunc_gnu_prefix,
+ "If false (the default), internal library routines start with two\n\
+underscores.  If set to true, these routines start with @code{__gnu_}\n\
+instead.  E.g., @code{__muldi3} changes to @code{__gnu_muldi3}.  This\n\
+currently only affects functions defined in @file{libgcc2.c}.  If this\n\
+is set to true, the @file{tm.h} file must also\n\
+@code{#define LIBGCC2_GNU_PREFIX}.",
+  bool, false)
+
 /* Given a decl, a section name, and whether the decl initializer
    has relocs, choose attributes for the section.  */
 /* ??? Should be merged with SELECT_SECTION and UNIQUE_SECTION.  */
@@ -1291,6 +1302,13 @@ DEFHOOK
  unsigned, (unsigned nunroll, struct loop *loop),
  NULL)
 
+/* True if X is a legitimate MODE-mode immediate operand.  */
+DEFHOOK
+(legitimate_constant_p,
+ "",
+ bool, (enum machine_mode mode, rtx x),
+ hook_bool_mode_rtx_true)
+
 /* True if the constant X cannot be placed in the constant pool.  */
 DEFHOOK
 (cannot_force_const_mem,
@@ -1558,6 +1576,38 @@ DEFHOOK
  bool, (enum machine_mode mode),
  hook_bool_mode_false)
 
+/* True if we should try to use a scalar mode to represent an array,
+   overriding the usual MAX_FIXED_MODE limit.  */
+DEFHOOK
+(array_mode_supported_p,
+ "Return true if GCC should try to use a scalar mode to store an array\n\
+of @var{nelems} elements, given that each element has mode @var{mode}.\n\
+Returning true here overrides the usual @code{MAX_FIXED_MODE} limit\n\
+and allows GCC to use any defined integer mode.\n\
+\n\
+One use of this hook is to support vector load and store operations\n\
+that operate on several homogeneous vectors.  For example, ARM NEON\n\
+has operations like:\n\
+\n\
+@smallexample\n\
+int8x8x3_t vld3_s8 (const int8_t *)\n\
+@end smallexample\n\
+\n\
+where the return type is defined as:\n\
+\n\
+@smallexample\n\
+typedef struct int8x8x3_t\n\
+@{\n\
+  int8x8_t val[3];\n\
+@} int8x8x3_t;\n\
+@end smallexample\n\
+\n\
+If this hook allows @code{val} to have a scalar mode, then\n\
+@code{int8x8x3_t} can have the same mode.  GCC can then store\n\
+@code{int8x8x3_t}s in registers rather than forcing them onto the stack.",
+ bool, (enum machine_mode mode, unsigned HOST_WIDE_INT nelems),
+ hook_bool_mode_uhwi_false)
+
 /* Compute cost of moving data from a register of class FROM to one of
    TO, using MODE.  */
 DEFHOOK