diff mbox series

[4/7] hook/rs6000: Add vectorize length mode for vector with length

Message ID 9a4a4b25-6b41-bbb3-d1b7-146de95693c0@linux.ibm.com
State New
Headers show
Series Support vector load/store with length | expand

Commit Message

Kewen.Lin May 26, 2020, 5:55 a.m. UTC 
gcc/ChangeLog:

2020-MM-DD  Kewen Lin  <linkw@gcc.gnu.org>

	* config/rs6000/rs6000.c (TARGET_VECTORIZE_LENGTH_MODE): New macro.
	* doc/tm.texi: Regenerate.
	* doc/tm.texi.in: New hook.
	* target.def: Likewise.
---
 gcc/config/rs6000/rs6000.c | 3 +++
 gcc/doc/tm.texi            | 6 ++++++
 gcc/doc/tm.texi.in         | 2 ++
 gcc/target.def             | 7 +++++++
 4 files changed, 18 insertions(+)

--
diff mbox series

Patch

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 8435bc15d72..c4d9d558b2f 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -1659,6 +1659,9 @@  static const struct attribute_spec rs6000_attribute_table[] =
 #undef TARGET_HAVE_COUNT_REG_DECR_P
 #define TARGET_HAVE_COUNT_REG_DECR_P true
 
+#undef TARGET_VECTORIZE_LENGTH_MODE
+#define TARGET_VECTORIZE_LENGTH_MODE DImode
+
 /* 1000000000 is infinite cost in IVOPTs.  */
 #undef TARGET_DOLOOP_COST_FOR_GENERIC
 #define TARGET_DOLOOP_COST_FOR_GENERIC 1000000000
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 6e7d9dc54a9..5ea8734a191 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -6084,6 +6084,12 @@  The default implementation returns a @code{MODE_VECTOR_INT} with the
 same size and number of elements as @var{mode}, if such a mode exists.
 @end deftypefn
 
+@deftypevr {Target Hook} scalar_int_mode TARGET_VECTORIZE_LENGTH_MODE
+For the targets which support vector memory access with length, return
+the scalar int mode to use for the length in bytes.
+The default is to use @code{word_mode}.
+@end deftypevr
+
 @deftypefn {Target Hook} bool TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE (unsigned @var{ifn})
 This hook returns true if masked internal function @var{ifn} (really of
 type @code{internal_fn}) should be considered expensive when the mask is
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index 3be984bbd5c..83034176b56 100644
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -4181,6 +4181,8 @@  address;  but often a machine-dependent strategy can generate better code.
 
 @hook TARGET_VECTORIZE_GET_MASK_MODE
 
+@hook TARGET_VECTORIZE_LENGTH_MODE
+
 @hook TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE
 
 @hook TARGET_VECTORIZE_INIT_COST
diff --git a/gcc/target.def b/gcc/target.def
index 07059a87caf..b58d87e1496 100644
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -1969,6 +1969,13 @@  same size and number of elements as @var{mode}, if such a mode exists.",
  (machine_mode mode),
  default_get_mask_mode)
 
+DEFHOOKPOD
+(length_mode,
+ "For the targets which support vector memory access with length, return\n\
+the scalar int mode to use for the length in bytes.\n\
+The default is to use @code{word_mode}.",
+ scalar_int_mode, word_mode)
+
 /* Function to say whether a masked operation is expensive when the
    mask is all zeros.  */
 DEFHOOK