Turn UNITS_PER_SIMD_WORD into a target hook.

2010-09-14  H.J. Lu  <hongjiu.lu@intel.com>

	* defaults.h (UNITS_PER_SIMD_WORD): Removed.
	* config/arm/arm.h (UNITS_PER_SIMD_WORD): Likewise.
	* config/i386/i386.h (UNITS_PER_SIMD_WORD): Likewise.
	* config/mips/mips.h (UNITS_PER_SIMD_WORD): Likewise.
	* config/rs6000/rs6000.h (UNITS_PER_SIMD_WORD): Likewise.
	* config/sparc/sparc.h (UNITS_PER_SIMD_WORD): Likewise.

	* target.def: Add units_per_simd_word to vectorize.

	* targhooks.c (default_units_per_simd_word): New.
	* targhooks.h (default_units_per_simd_word): Likewise.
	* config/arm/arm.c (arm_units_per_simd_word): Likewise.
	(TARGET_VECTORIZE_UNITS_PER_SIMD_WORD): Likewise.
	* config/mips/mips.c (mips_units_per_simd_word): Likewise.
	(TARGET_VECTORIZE_UNITS_PER_SIMD_WORD): Likewise.
	* config/rs6000/rs6000.c (rs6000_units_per_simd_word): Likewise.
	(TARGET_VECTORIZE_UNITS_PER_SIMD_WORD): Likewise.
	* config/sparc/sparc.c (sparc_units_per_simd_word): Likewise.
	(TARGET_VECTORIZE_UNITS_PER_SIMD_WORD): Likewise.

	* tree-vect-loop.c: Replace UNITS_PER_SIMD_WORD with
	TARGET_VECTORIZE_UNITS_PER_SIMD_WORD in comments.

	* tree-vect-stmts.c (get_vectype_for_scalar_type): Replace
	UNITS_PER_SIMD_WORD with targetm.vectorize.units_per_simd_word.

	* system.h (UNITS_PER_SIMD_WORD): Poisoned.

	* config/i386/i386-protos.h (ix86_units_per_simd_word): Removed.

	* config/i386/i386.c (ix86_units_per_simd_word): Make it
	static.
	(TARGET_VECTORIZE_UNITS_PER_SIMD_WORD): New.

	* doc/tm.texi.in: Remove UNITS_PER_SIMD_WORD.  Add
	TARGET_VECTORIZE_UNITS_PER_SIMD_WORD.

	* doc/tm.texi: Regenerated.

From-SVN: r164285

11 files changed, 53 insertions, 23 deletions

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 1d547b0..6f260ec 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -236,6 +236,7 @@ static rtx arm_trampoline_adjust_address (rtx);
 static rtx arm_pic_static_addr (rtx orig, rtx reg);
 static bool cortex_a9_sched_adjust_cost (rtx, rtx, rtx, int *);
 static bool xscale_sched_adjust_cost (rtx, rtx, rtx, int *);
+static unsigned int arm_units_per_simd_word (enum machine_mode);
 
 
 /* Table of machine attributes.  */
@@ -363,6 +364,8 @@ static const struct attribute_spec arm_attribute_table[] =
 #define TARGET_SHIFT_TRUNCATION_MASK arm_shift_truncation_mask
 #undef TARGET_VECTOR_MODE_SUPPORTED_P
 #define TARGET_VECTOR_MODE_SUPPORTED_P arm_vector_mode_supported_p
+#undef TARGET_VECTORIZE_UNITS_PER_SIMD_WORD
+#define TARGET_VECTORIZE_UNITS_PER_SIMD_WORD arm_units_per_simd_word
 
 #undef  TARGET_MACHINE_DEPENDENT_REORG
 #define TARGET_MACHINE_DEPENDENT_REORG arm_reorg
@@ -21869,6 +21872,17 @@ arm_vector_mode_supported_p (enum machine_mode mode)
   return false;
 }
 
+/* Use the option -mvectorize-with-neon-quad to override the use of doubleword
+   registers when autovectorizing for Neon, at least until multiple vector
+   widths are supported properly by the middle-end.  */
+
+static unsigned int
+arm_units_per_simd_word (enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+  return (TARGET_NEON
+	  ? (TARGET_NEON_VECTORIZE_QUAD ? 16 : 8) : UNITS_PER_WORD);
+}
+
 /* Implements target hook small_register_classes_for_mode_p.  */
 bool
 arm_small_register_classes_for_mode_p (enum machine_mode mode ATTRIBUTE_UNUSED)
diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
index 5b66510..36b618a 100644
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -580,12 +580,6 @@ extern int arm_arch_hwdiv;
 
 #define UNITS_PER_WORD	4
 
-/* Use the option -mvectorize-with-neon-quad to override the use of doubleword
-   registers when autovectorizing for Neon, at least until multiple vector
-   widths are supported properly by the middle-end.  */
-#define UNITS_PER_SIMD_WORD(MODE) \
-  (TARGET_NEON ? (TARGET_NEON_VECTORIZE_QUAD ? 16 : 8) : UNITS_PER_WORD)
-
 /* True if natural alignment is used for doubleword types.  */
 #define ARM_DOUBLEWORD_ALIGN	TARGET_AAPCS_BASED
 
diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index fa88134..900b424 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -38,8 +38,6 @@ extern void ix86_output_addr_diff_elt (FILE *, int, int);
 extern enum calling_abi ix86_cfun_abi (void);
 extern enum calling_abi ix86_function_type_abi (const_tree);
 
-extern unsigned int ix86_units_per_simd_word (enum machine_mode);
-
 #ifdef RTX_CODE
 extern int standard_80387_constant_p (rtx);
 extern const char *standard_80387_constant_opcode (rtx);
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index a1bc205..1d4e4ae 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -32341,7 +32341,7 @@ has_dispatch (rtx insn, int action)
 /* ??? No autovectorization into MMX or 3DNOW until we can reliably
    place emms and femms instructions.  */
 
-unsigned int
+static unsigned int
 ix86_units_per_simd_word (enum machine_mode mode)
 {
   /* Disable double precision vectorizer if needed.  */
@@ -32609,6 +32609,9 @@ ix86_units_per_simd_word (enum machine_mode mode)
 #undef TARGET_VECTORIZE_BUILTIN_VEC_PERM_OK
 #define TARGET_VECTORIZE_BUILTIN_VEC_PERM_OK \
   ix86_vectorize_builtin_vec_perm_ok
+#undef TARGET_VECTORIZE_UNITS_PER_SIMD_WORD
+#define TARGET_VECTORIZE_UNITS_PER_SIMD_WORD \
+  ix86_units_per_simd_word
 
 #undef TARGET_SET_CURRENT_FUNCTION
 #define TARGET_SET_CURRENT_FUNCTION ix86_set_current_function
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 6fc2249..fe48efd 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -1033,8 +1033,6 @@ enum target_cpu_default
    || (MODE) == V2SImode || (MODE) == SImode				\
    || (MODE) == V4HImode || (MODE) == V8QImode)
 
-#define UNITS_PER_SIMD_WORD(MODE) ix86_units_per_simd_word (MODE)
-
 #define VALID_DFP_MODE_P(MODE) \
   ((MODE) == SDmode || (MODE) == DDmode || (MODE) == TDmode)
 
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 20b63c7..945ee42 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -11140,6 +11140,14 @@ mips_scalar_mode_supported_p (enum machine_mode mode)
   return default_scalar_mode_supported_p (mode);
 }
 
+/* Implement TARGET_VECTORIZE_UNITS_PER_SIMD_WORD.  */
+
+static bool
+mips_units_per_simd_word (enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+  return TARGET_PAIRED_SINGLE_FLOAT ? 8 : UNITS_PER_WORD;
+}
+
 /* Implement TARGET_INIT_LIBFUNCS.  */
 
 #include "config/gofast.h"
@@ -16506,6 +16514,9 @@ mips_shift_truncation_mask (enum machine_mode mode)
 #undef TARGET_SCALAR_MODE_SUPPORTED_P
 #define TARGET_SCALAR_MODE_SUPPORTED_P mips_scalar_mode_supported_p
 
+#undef TARGET_VECTORIZE_UNITS_PER_SIMD_WORD
+#define TARGET_VECTORIZE_UNITS_PER_SIMD_WORD mips_units_per_simd_word
+
 #undef TARGET_INIT_BUILTINS
 #define TARGET_INIT_BUILTINS mips_init_builtins
 #undef TARGET_EXPAND_BUILTIN
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index 74bf3d25..4f44130 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -1328,9 +1328,6 @@ enum mips_code_readable_setting {
 /* The number of bytes in a double.  */
 #define UNITS_PER_DOUBLE (TYPE_PRECISION (double_type_node) / BITS_PER_UNIT)
 
-#define UNITS_PER_SIMD_WORD(MODE) \
-  (TARGET_PAIRED_SINGLE_FLOAT ? 8 : UNITS_PER_WORD)
-
 /* Set the sizes of the core types.  */
 #define SHORT_TYPE_SIZE 16
 #define INT_TYPE_SIZE 32
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index ab5da58..2ebe484 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -3570,6 +3570,18 @@ rs6000_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost,
     }
 }
 
+/* Implement targetm.vectorize.units_per_simd_word.  */
+
+static int
+rs6000_units_per_simd_word (enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+  return (TARGET_VSX ? UNITS_PER_VSX_WORD
+	  : (TARGET_ALTIVEC ? UNITS_PER_ALTIVEC_WORD
+	     : (TARGET_SPE ? UNITS_PER_SPE_WORD
+		: (TARGET_PAIRED_FLOAT ? UNITS_PER_PAIRED_WORD
+		   : UNITS_PER_WORD))));
+}
+
 /* Handle generic options of the form -mfoo=yes/no.
    NAME is the option name.
    VALUE is the option value.
diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h
index 63f1bba..5b0e4c7 100644
--- a/gcc/config/rs6000/rs6000.h
+++ b/gcc/config/rs6000/rs6000.h
@@ -1150,13 +1150,6 @@ extern unsigned rs6000_pointer_size;
 #define PAIRED_VECTOR_MODE(MODE)        \
          ((MODE) == V2SFmode)            
 
-#define UNITS_PER_SIMD_WORD(MODE)					\
-	(TARGET_VSX ? UNITS_PER_VSX_WORD				\
-	 : (TARGET_ALTIVEC ? UNITS_PER_ALTIVEC_WORD			\
-	 : (TARGET_SPE ? UNITS_PER_SPE_WORD				\
-	 : (TARGET_PAIRED_FLOAT ? UNITS_PER_PAIRED_WORD			\
-	 : UNITS_PER_WORD))))
-
 /* Value is TRUE if hard register REGNO can hold a value of
    machine-mode MODE.  */
 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index ba034e6..71c94e1 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -434,6 +434,7 @@ static bool sparc_can_eliminate (const int, const int);
 static const char *sparc_mangle_type (const_tree);
 #endif
 static void sparc_trampoline_init (rtx, tree, rtx);
+static bool sparc_units_per_simd_word (enum machine_mode);
 
 #ifdef SUBTARGET_ATTRIBUTE_TABLE
 /* Table of valid machine attributes.  */
@@ -571,6 +572,9 @@ static bool fpu_option_set = false;
 #undef TARGET_VECTOR_MODE_SUPPORTED_P
 #define TARGET_VECTOR_MODE_SUPPORTED_P sparc_vector_mode_supported_p
 
+#undef TARGET_VECTORIZE_UNITS_PER_SIMD_WORD
+#define TARGET_VECTORIZE_UNITS_PER_SIMD_WORD sparc_units_per_simd_word
+
 #undef TARGET_DWARF_HANDLE_FRAME_UNSPEC
 #define TARGET_DWARF_HANDLE_FRAME_UNSPEC sparc_dwarf_handle_frame_unspec
 
@@ -6233,6 +6237,14 @@ sparc_vector_mode_supported_p (enum machine_mode mode)
   return TARGET_VIS && VECTOR_MODE_P (mode) ? true : false;
 }
 
+/* Implement the TARGET_VECTORIZE_UNITS_PER_SIMD_WORD target hook.  */
+
+static bool
+sparc_units_per_simd_word (enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+  return TARGET_VIS ? 8 : UNITS_PER_WORD;
+}
+
 /* Return the string to output an unconditional branch to LABEL, which is
    the operand number of the label.
 
diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h
index eae3959..21694eb 100644
--- a/gcc/config/sparc/sparc.h
+++ b/gcc/config/sparc/sparc.h
@@ -607,8 +607,6 @@ extern struct sparc_cpu_select sparc_select[];
 #define MIN_UNITS_PER_WORD	4
 #endif
 
-#define UNITS_PER_SIMD_WORD(MODE) (TARGET_VIS ? 8 : UNITS_PER_WORD)
-
 /* Now define the sizes of the C data types.  */
 
 #define SHORT_TYPE_SIZE		16