+2009-09-15 Revital Eres <eres@il.ibm.com>
+
+ * doc/tm.texi (TARGET_SUPPORT_VECTOR_MISALIGNMENT): Document.
+ * targhooks.c (default_builtin_support_vector_misalignment):
+ New builtin function.
+ * targhooks.h (default_builtin_support_vector_misalignment):
+ Declare.
+ * target.h (builtin_support_vector_misalignment):
+ New field in struct gcc_target.
+ * tree-vect-data-refs.c (vect_supportable_dr_alignment): Call
+ new builtin function.
+ * target-def.h (TARGET_SUPPORT_VECTOR_MISALIGNMENT):
+ Define.
+ * config/rs6000/rs6000.c
+ (rs6000_builtin_support_vector_misalignment): New function.
+ (TARGET_SUPPORT_VECTOR_MISALIGNMENT): Define.
+
2009-09-15 Jie Zhang <jie.zhang@analog.com>
* config/bfin/bfin.c (length_for_loop): Use NONDEBUG_INSN_P
static tree rs6000_builtin_mul_widen_odd (tree);
static tree rs6000_builtin_conversion (unsigned int, tree);
static tree rs6000_builtin_vec_perm (tree, tree *);
+static bool rs6000_builtin_support_vector_misalignment (enum
+ machine_mode,
+ const_tree,
+ int, bool);
static void def_builtin (int, const char *, tree, int);
static bool rs6000_vector_alignment_reachable (const_tree, bool);
#define TARGET_VECTORIZE_BUILTIN_CONVERSION rs6000_builtin_conversion
#undef TARGET_VECTORIZE_BUILTIN_VEC_PERM
#define TARGET_VECTORIZE_BUILTIN_VEC_PERM rs6000_builtin_vec_perm
-
+#undef TARGET_SUPPORT_VECTOR_MISALIGNMENT
+#define TARGET_SUPPORT_VECTOR_MISALIGNMENT \
+ rs6000_builtin_support_vector_misalignment
#undef TARGET_VECTOR_ALIGNMENT_REACHABLE
#define TARGET_VECTOR_ALIGNMENT_REACHABLE rs6000_vector_alignment_reachable
}
}
+/* Return true if the vector misalignment factor is supported by the
+ target. */
+bool
+rs6000_builtin_support_vector_misalignment (enum machine_mode mode,
+ const_tree type,
+ int misalignment,
+ bool is_packed)
+{
+ if (TARGET_VSX)
+ {
+ /* Return if movmisalign pattern is not supported for this mode. */
+ if (optab_handler (movmisalign_optab, mode)->insn_code ==
+ CODE_FOR_nothing)
+ return false;
+
+ if (misalignment == -1)
+ {
+ /* misalignment factor is unknown at compile time but we know
+ it's word aligned. */
+ if (rs6000_vector_alignment_reachable (type, is_packed))
+ return true;
+ return false;
+ }
+ /* VSX supports word-aligned vector. */
+ if (misalignment % 4 == 0)
+ return true;
+ }
+ return false;
+}
+
/* Implement targetm.vectorize.builtin_vec_perm. */
tree
rs6000_builtin_vec_perm (tree type, tree *mask_element_type)
argument types should be @var{vec_type_in}.
@end deftypefn
+@deftypefn {Target Hook} bool TARGET_SUPPORT_VECTOR_MISALIGNMENT (enum machine_mode @var{mode}, tree @var{type}, int @var{misalignment}, bool @var{is_packed})
+This hook should return true if the target supports misaligned vector
+store/load of a specific factor denoted in the @var{misalignment}
+parameter. The vector store/load should be of machine mode @var{mode} and
+the elements in the vectors should be of type @var{type}. @var{is_packed}
+parameter is true if the memory access is defined in a packed struct.
+@end deftypefn
+
@node Anchored Addresses
@section Anchored Addresses
@cindex anchored addresses
#define TARGET_VECTOR_ALIGNMENT_REACHABLE \
default_builtin_vector_alignment_reachable
#define TARGET_VECTORIZE_BUILTIN_VEC_PERM 0
+#define TARGET_SUPPORT_VECTOR_MISALIGNMENT \
+ default_builtin_support_vector_misalignment
+
#define TARGET_VECTORIZE \
{ \
TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD, \
TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST, \
TARGET_VECTOR_ALIGNMENT_REACHABLE, \
- TARGET_VECTORIZE_BUILTIN_VEC_PERM \
+ TARGET_VECTORIZE_BUILTIN_VEC_PERM, \
+ TARGET_SUPPORT_VECTOR_MISALIGNMENT \
}
#define TARGET_DEFAULT_TARGET_FLAGS 0
/* Target builtin that implements vector permute. */
tree (* builtin_vec_perm) (tree, tree*);
+ /* Return true if the target supports misaligned store/load of a
+ specific factor denoted in the third parameter. The last parameter
+ is true if the access is defined in a packed struct. */
+ bool (* builtin_support_vector_misalignment) (enum machine_mode,
+ const_tree, int, bool);
} vectorize;
/* The initial value of target_flags. */
return true;
}
+/* By default, assume that a target supports any factor of misalignment
+ memory access if it supports movmisalign patten.
+ is_packed is true if the memory access is defined in a packed struct. */
+bool
+default_builtin_support_vector_misalignment (enum machine_mode mode,
+ const_tree type
+ ATTRIBUTE_UNUSED,
+ int misalignment
+ ATTRIBUTE_UNUSED,
+ bool is_packed
+ ATTRIBUTE_UNUSED)
+{
+ if (optab_handler (movmisalign_optab, mode)->insn_code != CODE_FOR_nothing)
+ return true;
+ return false;
+}
+
bool
default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED)
{
extern tree default_builtin_reciprocal (unsigned int, bool, bool);
extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
+extern bool
+default_builtin_support_vector_misalignment (enum machine_mode mode,
+ const_tree,
+ int, bool);
/* These are here, and not in hooks.[ch], because not all users of
hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS. */
if (DR_IS_READ (dr))
{
+ bool is_packed = false;
+ tree type = (TREE_TYPE (DR_REF (dr)));
+
if (optab_handler (vec_realign_load_optab, mode)->insn_code !=
CODE_FOR_nothing
&& (!targetm.vectorize.builtin_mask_for_load
else
return dr_explicit_realign_optimized;
}
-
- if (optab_handler (movmisalign_optab, mode)->insn_code !=
- CODE_FOR_nothing)
+ if (!known_alignment_for_access_p (dr))
+ {
+ tree ba = DR_BASE_OBJECT (dr);
+
+ if (ba)
+ is_packed = contains_packed_reference (ba);
+ }
+
+ if (targetm.vectorize.
+ builtin_support_vector_misalignment (mode, type,
+ DR_MISALIGNMENT (dr), is_packed))
/* Can't software pipeline the loads, but can at least do them. */
return dr_unaligned_supported;
}
- else
- {
- if (movmisalign_optab->handlers[mode].insn_code != CODE_FOR_nothing)
- return dr_unaligned_supported;
- }
+ else
+ {
+ bool is_packed = false;
+ tree type = (TREE_TYPE (DR_REF (dr)));
+ if (!known_alignment_for_access_p (dr))
+ {
+ tree ba = DR_BASE_OBJECT (dr);
+
+ if (ba)
+ is_packed = contains_packed_reference (ba);
+ }
+
+ if (targetm.vectorize.
+ builtin_support_vector_misalignment (mode, type,
+ DR_MISALIGNMENT (dr), is_packed))
+ return dr_unaligned_supported;
+ }
+
/* Unsupported. */
return dr_unaligned_unsupported;
}