From 3efe2e2cc10787a69473b926e100d4dde302f638 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Wed, 19 Mar 2014 10:13:32 +0100 Subject: re PR tree-optimization/60559 (g++.dg/vect/pr60023.cc fails with -fno-tree-dce (ICE)) PR tree-optimization/60559 * vectorizable_mask_load_store): Replace scalar MASK_LOAD with build_zero_cst assignment. * g++.dg/vect/pr60559.cc: New test. From-SVN: r208676 --- gcc/tree-vect-stmts.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'gcc/tree-vect-stmts.c') diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c index 70fb411..884e769 100644 --- a/gcc/tree-vect-stmts.c +++ b/gcc/tree-vect-stmts.c @@ -2038,6 +2038,15 @@ vectorizable_mask_load_store (gimple stmt, gimple_stmt_iterator *gsi, STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; prev_stmt_info = vinfo_for_stmt (new_stmt); } + + /* Ensure that even with -fno-tree-dce the scalar MASK_LOAD is removed + from the IL. */ + tree lhs = gimple_call_lhs (stmt); + new_stmt = gimple_build_assign (lhs, build_zero_cst (TREE_TYPE (lhs))); + set_vinfo_for_stmt (new_stmt, stmt_info); + set_vinfo_for_stmt (stmt, NULL); + STMT_VINFO_STMT (stmt_info) = new_stmt; + gsi_replace (gsi, new_stmt, true); return true; } else if (is_store) @@ -2149,6 +2158,18 @@ vectorizable_mask_load_store (gimple stmt, gimple_stmt_iterator *gsi, } } + if (!is_store) + { + /* Ensure that even with -fno-tree-dce the scalar MASK_LOAD is removed + from the IL. */ + tree lhs = gimple_call_lhs (stmt); + new_stmt = gimple_build_assign (lhs, build_zero_cst (TREE_TYPE (lhs))); + set_vinfo_for_stmt (new_stmt, stmt_info); + set_vinfo_for_stmt (stmt, NULL); + STMT_VINFO_STMT (stmt_info) = new_stmt; + gsi_replace (gsi, new_stmt, true); + } + return true; } -- cgit v1.1