tree-vectorizer.c: New File: loop vectorization on SSAed GIMPLE trees.

        * tree-vectorizer.c: New File: loop vectorization on SSAed GIMPLE trees.
        * tree-vectorizer.h: New File: Same.
        * Makefile.in (tree-vectorizer.c, tree-vectorizer.h): Add new files.
        * common.opt (ftree-vectorize): New flag to enable vectorization.
        * timevar.def (TV_TREE_VECTORIZATION): New dump file for vectorization
        pass.
        * tree-data-ref.h (init_data_ref): Additional argument.
        (array_base_name_differ_p): Moved to tree-data-ref.c.
        * tree-data-ref.c (array_base_name_differ_p): Revised.
        (initialize_data_dependence_relation): Call array_base_name_differ_p
        with an extra argument.
        (analyze_all_data_dependences): Same.
        (init_data_ref): Additional argument is_read to set DR_IS_READ.
        * tree-ssa-phiopt.c (empty_block_p): Expose for usage out of this file.
        * tree-flow.h (vectorize_loops, empty_block_p): Add declaration.
        * tree-optimize.c (pass_vectorize): Schedule the vectorization pass.
        * tree-pass.h (tree_opt_pass pass_vectorize): Declare the new
        vectorization pass.
        * tree-ssa-loop.c (tree_ssa_loop_init): Call scev_initialize.
        (tree_ssa_loop_done): Call scev_finalize.
        (tree_vectorize): Define the new vectorization pass.
        * defaults.h (UNITS_PER_SIMD_WORD): Allow targets to specify the size of
        the vector they support (until support for multiple vector sizes is
        added to the vectorizer).
        * config/i386/i386.h (UNITS_PER_SIMD_WORD): Define.
        * config/rs6000/rs6000.h (UNITS_PER_SIMD_WORD): Define.
        * invoke.texi (fdump-tree-vect, ftree-vectorize): Add
        documentation.

From-SVN: r86131

1 files changed, 10 insertions, 2 deletions

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 98b66e2..4eb1498 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -263,7 +263,7 @@ Objective-C and Objective-C++ Dialects}.
 -fdump-tree-phiopt@r{[}-@var{n}@r{]} @gol
 -fdump-tree-forwprop@r{[}-@var{n}@r{]} @gol
 -fdump-tree-copyrename@r{[}-@var{n}@r{]} @gol
--fdump-tree-nrv @gol
+-fdump-tree-nrv -fdump-tree-vect @gol
 -fdump-tree-sra@r{[}-@var{n}@r{]} @gol
 -fdump-tree-fre@r{[}-@var{n}@r{]} @gol
 -feliminate-dwarf2-dups -feliminate-unused-debug-types @gol
@@ -318,7 +318,7 @@ Objective-C and Objective-C++ Dialects}.
 -ftree-pre  -ftree-ccp  -ftree-dce -ftree-loop-optimize @gol
 -ftree-lim @gol
 -ftree-dominator-opts -ftree-dse -ftree-copyrename @gol
--ftree-ch -ftree-sra -ftree-ter -ftree-lrs -ftree-fre @gol
+-ftree-ch -ftree-sra -ftree-ter -ftree-lrs -ftree-fre -ftree-vectorize @gol
 --param @var{name}=@var{value}
 -O  -O0  -O1  -O2  -O3  -Os}
 
@@ -3664,6 +3664,11 @@ Dump each function after applying the named return value optimization on
 generic trees.  The file name is made by appending @file{.nrv} to the source
 file name.
 
+@item vect
+@opindex fdump-tree-vect
+Dump each function after applying vectorization of loops.  The file name is 
+made by appending @file{.vect} to the source file name.
+
 @item all
 @opindex fdump-tree-all
 Enable all the available tree dumps with the flags provided in this option.
@@ -4499,6 +4504,9 @@ Perform live range splitting during the SSA->normal phase.  Distinct live
 ranges of a variable are split into unique variables, allowing for better
 optimization later.  This is enabled by default at -O and higher.
 
+@item -ftree-vectorize
+Perform loop vectorization on trees.
+
 @item -ftracer
 @opindex ftracer
 Perform tail duplication to enlarge superblock size. This transformation