diff options
Diffstat (limited to 'gcc/tree-vect-analyze.c')
| -rw-r--r-- | gcc/tree-vect-analyze.c | 75 |
1 files changed, 53 insertions, 22 deletions
diff --git a/gcc/tree-vect-analyze.c b/gcc/tree-vect-analyze.c index ab749fba34a..c5882d42afb 100644 --- a/gcc/tree-vect-analyze.c +++ b/gcc/tree-vect-analyze.c @@ -1,5 +1,5 @@ /* Analysis Utilities for Loop Vectorization. - Copyright (C) 2003,2004,2005 Free Software Foundation, Inc. + Copyright (C) 2003,2004,2005,2006 Free Software Foundation, Inc. Contributed by Dorit Naishlos <dorit@il.ibm.com> This file is part of GCC. @@ -142,35 +142,46 @@ vect_determine_vectorization_factor (loop_vec_info loop_vinfo) return false; } - if (STMT_VINFO_DATA_REF (stmt_info)) - scalar_type = TREE_TYPE (DR_REF (STMT_VINFO_DATA_REF (stmt_info))); - else if (TREE_CODE (stmt) == MODIFY_EXPR) - scalar_type = TREE_TYPE (TREE_OPERAND (stmt, 0)); - else - scalar_type = TREE_TYPE (stmt); + if (STMT_VINFO_VECTYPE (stmt_info)) + { + vectype = STMT_VINFO_VECTYPE (stmt_info); + scalar_type = TREE_TYPE (vectype); + } + else + { + if (STMT_VINFO_DATA_REF (stmt_info)) + scalar_type = + TREE_TYPE (DR_REF (STMT_VINFO_DATA_REF (stmt_info))); + else if (TREE_CODE (stmt) == MODIFY_EXPR) + scalar_type = TREE_TYPE (TREE_OPERAND (stmt, 0)); + else + scalar_type = TREE_TYPE (stmt); - if (vect_print_dump_info (REPORT_DETAILS)) - { - fprintf (vect_dump, "get vectype for scalar type: "); - print_generic_expr (vect_dump, scalar_type, TDF_SLIM); - } + if (vect_print_dump_info (REPORT_DETAILS)) + { + fprintf (vect_dump, "get vectype for scalar type: "); + print_generic_expr (vect_dump, scalar_type, TDF_SLIM); + } - vectype = get_vectype_for_scalar_type (scalar_type); - if (!vectype) - { - if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS)) - { - fprintf (vect_dump, "not vectorized: unsupported data-type "); - print_generic_expr (vect_dump, scalar_type, TDF_SLIM); - } - return false; + vectype = get_vectype_for_scalar_type (scalar_type); + if (!vectype) + { + if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS)) + { + fprintf (vect_dump, + "not vectorized: unsupported data-type "); + print_generic_expr (vect_dump, scalar_type, TDF_SLIM); + } + return false; + } + STMT_VINFO_VECTYPE (stmt_info) = vectype; } + if (vect_print_dump_info (REPORT_DETAILS)) { fprintf (vect_dump, "vectype: "); print_generic_expr (vect_dump, vectype, TDF_SLIM); } - STMT_VINFO_VECTYPE (stmt_info) = vectype; nunits = TYPE_VECTOR_SUBPARTS (vectype); if (vect_print_dump_info (REPORT_DETAILS)) @@ -1439,6 +1450,24 @@ vect_mark_relevant (VEC(tree,heap) **worklist, tree stmt, if (vect_print_dump_info (REPORT_DETAILS)) fprintf (vect_dump, "mark relevant %d, live %d.",relevant_p, live_p); + if (STMT_VINFO_IN_PATTERN_P (stmt_info)) + { + tree pattern_stmt; + + /* This is the last stmt in a sequence that was detected as a + pattern that can potentially be vectorized. Don't mark the stmt + as relevant/live because it's not going to vectorized. + Instead mark the pattern-stmt that replaces it. */ + if (vect_print_dump_info (REPORT_DETAILS)) + fprintf (vect_dump, "last stmt in pattern. don't mark relevant/live."); + pattern_stmt = STMT_VINFO_RELATED_STMT (stmt_info); + stmt_info = vinfo_for_stmt (pattern_stmt); + gcc_assert (STMT_VINFO_RELATED_STMT (stmt_info) == stmt); + save_relevant_p = STMT_VINFO_RELEVANT_P (stmt_info); + save_live_p = STMT_VINFO_LIVE_P (stmt_info); + stmt = pattern_stmt; + } + STMT_VINFO_LIVE_P (stmt_info) |= live_p; STMT_VINFO_RELEVANT_P (stmt_info) |= relevant_p; @@ -2002,6 +2031,8 @@ vect_analyze_loop (struct loop *loop) vect_analyze_scalar_cycles (loop_vinfo); + vect_pattern_recog (loop_vinfo); + /* Data-flow analysis to detect stmts that do not need to be vectorized. */ ok = vect_mark_stmts_to_be_vectorized (loop_vinfo); |