Merge branch 'master' into gfortran-testdevel/gfortran-test

1 files changed, 24 insertions, 5 deletions

diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 928578b..3764268 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -37,6 +37,8 @@ through the macros defined in the @file{.h} file.
 * Trampolines::         Code set up at run time to enter a nested function.
 * Library Calls::       Controlling how library routines are implicitly called.
 * Addressing Modes::    Defining addressing modes valid for memory operands.
+* Vectorization::       Controlling how the vectorizer operates.
+* OpenMP and OpenACC::  Defining how OpenMP and OpenACC features should work.
 * Anchored Addresses::  Defining how @option{-fsection-anchors} should work.
 * Condition Code::      Defining how insns update the condition code.
 * Costs::               Defining relative costs of different operations.
@@ -1424,10 +1426,10 @@ the smaller of @var{computed} and @code{BIGGEST_ALIGNMENT}
 
 @defmac MAX_FIXED_MODE_SIZE
 An integer expression for the size in bits of the largest integer
-machine mode that should actually be used.  All integer machine modes of
-this size or smaller can be used for structures and unions with the
-appropriate sizes.  If this macro is undefined, @code{GET_MODE_BITSIZE
-(DImode)} is assumed.
+machine mode that should actually be used by GCC internally.
+All integer machine modes of this size or smaller can be used for
+structures and unions with the appropriate sizes.  If this macro is
+undefined, @code{MAX (BITS_PER_WORD * 2, 64)} is assumed.
 @end defmac
 
 @defmac STACK_SAVEAREA_MODE (@var{save_level})
@@ -6282,6 +6284,10 @@ reciprocal of the machine-specific builtin function @var{fndecl}, or
 @code{NULL_TREE} if such a function is not available.
 @end deftypefn
 
+@node Vectorization
+@section Vectorization
+@cindex Vectorization
+
 @deftypefn {Target Hook} tree TARGET_VECTORIZE_BUILTIN_MASK_FOR_LOAD (void)
 This hook should return the DECL of a function @var{f} that given an
 address @var{addr} as an argument returns a mask @var{m} that can be
@@ -6513,6 +6519,19 @@ The default is @code{NULL_TREE} which means to not vectorize scatter
 stores.
 @end deftypefn
 
+@deftypefn {Target Hook} bool TARGET_VECTORIZE_PREFER_GATHER_SCATTER (machine_mode @var{mode}, int @var{scale}, unsigned int @var{group_size})
+This hook returns TRUE if gather loads or scatter stores are cheaper on
+this target than a sequence of elementwise loads or stores.  The @var{mode}
+and @var{scale} correspond to the @code{gather_load} and
+@code{scatter_store} instruction patterns.  The @var{group_size} is the
+number of scalar elements in each scalar loop iteration that are to be
+combined into the vector.
+@end deftypefn
+
+@node OpenMP and OpenACC
+@section OpenMP and OpenACC
+@cindex OpenMP and OpenACC
+
 @deftypefn {Target Hook} int TARGET_SIMD_CLONE_COMPUTE_VECSIZE_AND_SIMDLEN (struct cgraph_node *@var{}, struct cgraph_simd_clone *@var{}, @var{tree}, @var{int}, @var{bool})
 This hook should set @var{vecsize_mangle}, @var{vecsize_int}, @var{vecsize_float}
 fields in @var{simd_clone} structure pointed by @var{clone_info} argument and also
@@ -12862,7 +12881,7 @@ At preset, this feature does not support address spaces.  It also requires
 @code{Pmode} to be the same as @code{ptr_mode}.
 @end deftypefn
 
-@deftypefn {Target Hook} uint8_t TARGET_MEMTAG_TAG_SIZE ()
+@deftypefn {Target Hook} uint8_t TARGET_MEMTAG_TAG_BITSIZE ()
 Return the size of a tag (in bits) for this platform.
 
 The default returns 8.