Vectorize internal functions

This patch tries to vectorize built-in and internal functions as
internal functions first, falling back on the current built-in
target hooks otherwise.

This means that we'll automatically pick up vector versions of optabs
without the target having to implement any special hooks.  E.g. we'll
use V4SF sqrt if the target defines a "sqrtv4sf2" optab.  As well as
being simpler, it means that the target-independent code has more
idea what the vectorized function does.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnu and
powerpc64-linux-gnu.

gcc/
	* internal-fn.h (direct_internal_fn_info): Add vectorizable flag.
	* internal-fn.c (direct_internal_fn_array): Update accordingly.
	* tree-vectorizer.h (vectorizable_function): Delete.
	* tree-vect-stmts.c: Include internal-fn.h.
	(vectorizable_internal_function): New function.
	(vectorizable_function): Inline into...
	(vectorizable_call): ...here.  Explicitly reject calls that read
	from or write to memory.  Try using an internal function before
	falling back on the old vectorizable_function behavior.

From-SVN: r230492

1 files changed, 7 insertions, 7 deletions

diff --git a/gcc/internal-fn.c b/gcc/internal-fn.c
index 06c5d9e..df3b7dc 100644
--- a/gcc/internal-fn.c
+++ b/gcc/internal-fn.c
@@ -69,13 +69,13 @@ init_internal_fns ()
 
 /* Create static initializers for the information returned by
    direct_internal_fn.  */
-#define not_direct { -2, -2 }
-#define mask_load_direct { -1, 2 }
-#define load_lanes_direct { -1, -1 }
-#define mask_store_direct { 3, 2 }
-#define store_lanes_direct { 0, 0 }
-#define unary_direct { 0, 0 }
-#define binary_direct { 0, 0 }
+#define not_direct { -2, -2, false }
+#define mask_load_direct { -1, 2, false }
+#define load_lanes_direct { -1, -1, false }
+#define mask_store_direct { 3, 2, false }
+#define store_lanes_direct { 0, 0, false }
+#define unary_direct { 0, 0, true }
+#define binary_direct { 0, 0, true }
 
 const direct_internal_fn_info direct_internal_fn_array[IFN_LAST + 1] = {
 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) not_direct,