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| author | Jakub Jelinek <jakub@redhat.com> | 2014-03-19 10:13:32 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2014-03-19 10:13:32 +0100 |
| commit | 3efe2e2cc10787a69473b926e100d4dde302f638 (patch) | |
| tree | 9d2ff64e4e9b2385325e54fd4add747f5dcda784 /gcc/tree-vect-stmts.c | |
| parent | 15df2655d8fb8965e706b97167a4a3ea4dec6b03 (diff) | |
| download | gcc-3efe2e2cc10787a69473b926e100d4dde302f638.zip gcc-3efe2e2cc10787a69473b926e100d4dde302f638.tar.gz gcc-3efe2e2cc10787a69473b926e100d4dde302f638.tar.bz2 | |
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
Diffstat (limited to 'gcc/tree-vect-stmts.c')
| -rw-r--r-- | gcc/tree-vect-stmts.c | 21 |
1 files changed, 21 insertions, 0 deletions
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; } |