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| author | Jeff Law <law@redhat.com> | 2019-06-26 12:00:00 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2019-06-26 12:00:00 -0600 |
| commit | 4a61cf9c62212fd04f21704efc2decffe9544651 (patch) | |
| tree | 8a77e9e1bb86fbebcf8adcaa6f027ce901a2a13b /gcc/tree-ssa-dse.c | |
| parent | f363fc5b49cb83aa98d89efa98fe42f57af4de05 (diff) | |
| download | gcc-4a61cf9c62212fd04f21704efc2decffe9544651.zip gcc-4a61cf9c62212fd04f21704efc2decffe9544651.tar.gz gcc-4a61cf9c62212fd04f21704efc2decffe9544651.tar.bz2 | |
tree-ssa-dse.c (initialize_ao_ref_for_dse): Handle _chk variants of memcpy, memmove and memset builtins.
* tree-ssa-dse.c (initialize_ao_ref_for_dse): Handle _chk variants of
memcpy, memmove and memset builtins.
(maybe_trim_memstar_call): Likewise.
* gcc.c-torture/execute/builtins/builtins.exp: Add -fno-tree-dse
as DSE compromises several of these tests.
* gcc.dg/builtin-stringop-chk-1.c: Similarly.
* gcc.dg/memcpy-2.c: Similarly.
* gcc.dg/pr40340-1.c: Similarly.
* gcc.dg/pr40340-2.c: Similarly.
* gcc.dg/pr40340-5.c: Similarly.
From-SVN: r272704
Diffstat (limited to 'gcc/tree-ssa-dse.c')
| -rw-r--r-- | gcc/tree-ssa-dse.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/tree-ssa-dse.c b/gcc/tree-ssa-dse.c index aa998f4..ea71f49 100644 --- a/gcc/tree-ssa-dse.c +++ b/gcc/tree-ssa-dse.c @@ -98,6 +98,9 @@ initialize_ao_ref_for_dse (gimple *stmt, ao_ref *write) case BUILT_IN_MEMCPY: case BUILT_IN_MEMMOVE: case BUILT_IN_MEMSET: + case BUILT_IN_MEMCPY_CHK: + case BUILT_IN_MEMMOVE_CHK: + case BUILT_IN_MEMSET_CHK: { tree size = NULL_TREE; if (gimple_call_num_args (stmt) == 3) @@ -434,6 +437,8 @@ maybe_trim_memstar_call (ao_ref *ref, sbitmap live, gimple *stmt) { case BUILT_IN_MEMCPY: case BUILT_IN_MEMMOVE: + case BUILT_IN_MEMCPY_CHK: + case BUILT_IN_MEMMOVE_CHK: { int head_trim, tail_trim; compute_trims (ref, live, &head_trim, &tail_trim, stmt); @@ -455,6 +460,7 @@ maybe_trim_memstar_call (ao_ref *ref, sbitmap live, gimple *stmt) } case BUILT_IN_MEMSET: + case BUILT_IN_MEMSET_CHK: { int head_trim, tail_trim; compute_trims (ref, live, &head_trim, &tail_trim, stmt); @@ -860,6 +866,9 @@ dse_dom_walker::dse_optimize_stmt (gimple_stmt_iterator *gsi) case BUILT_IN_MEMCPY: case BUILT_IN_MEMMOVE: case BUILT_IN_MEMSET: + case BUILT_IN_MEMCPY_CHK: + case BUILT_IN_MEMMOVE_CHK: + case BUILT_IN_MEMSET_CHK: { /* Occasionally calls with an explicit length of zero show up in the IL. It's pointless to do analysis |