From e47352fb8981e74867d70acfac40127787e3fce2 Mon Sep 17 00:00:00 2001 From: victork Date: Mon, 5 Jun 2006 08:56:49 +0000 Subject: Changelog: PR tree-optimization/26360 * tree-vectorizer.c (destroy_loop_vec_info): Remove (dead) pattern stmts. testsuite/Changelog: PR tree-optimizations/26360 * gcc.dg/vect/vect.exp: Compile tests prefixed with "no-tree-dce" with -fno-tree-dce. * gcc.dg/vect/no-tree-dce-pr26360.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@114386 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/tree-vectorizer.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'gcc/tree-vectorizer.c') diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c index b6538a4b46d..c0d783474de 100644 --- a/gcc/tree-vectorizer.c +++ b/gcc/tree-vectorizer.c @@ -1467,7 +1467,7 @@ destroy_loop_vec_info (loop_vec_info loop_vinfo) set_stmt_info (ann, NULL); } - for (si = bsi_start (bb); !bsi_end_p (si); bsi_next (&si)) + for (si = bsi_start (bb); !bsi_end_p (si); ) { tree stmt = bsi_stmt (si); stmt_ann_t ann = stmt_ann (stmt); @@ -1475,10 +1475,28 @@ destroy_loop_vec_info (loop_vec_info loop_vinfo) if (stmt_info) { + /* Check if this is a "pattern stmt" (introduced by the + vectorizer during the pattern recognition pass). */ + bool remove_stmt_p = false; + tree orig_stmt = STMT_VINFO_RELATED_STMT (stmt_info); + if (orig_stmt) + { + stmt_vec_info orig_stmt_info = vinfo_for_stmt (orig_stmt); + if (orig_stmt_info + && STMT_VINFO_IN_PATTERN_P (orig_stmt_info)) + remove_stmt_p = true; + } + + /* Free stmt_vec_info. */ VEC_free (dr_p, heap, STMT_VINFO_SAME_ALIGN_REFS (stmt_info)); free (stmt_info); set_stmt_info ((tree_ann_t)ann, NULL); + + /* Remove dead "pattern stmts". */ + if (remove_stmt_p) + bsi_remove (&si, true); } + bsi_next (&si); } } -- cgit v1.2.3