diff options
| author | Martin Liska <mliska@suse.cz> | 2018-04-13 10:35:32 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-04-13 10:35:32 +0200 |
| commit | fdd332545cacd845162103bf9855c4605be73584 (patch) | |
| tree | 2c2fff0f0c8d64c99dc10974991256116f113a2f /gcc/builtins.c | |
| parent | 6888a172d3e9a19921783a31fd8bce5bde8a9c31 (diff) | |
| download | gcc-fdd332545cacd845162103bf9855c4605be73584.zip gcc-fdd332545cacd845162103bf9855c4605be73584.tar.gz gcc-fdd332545cacd845162103bf9855c4605be73584.tar.bz2 | |
re PR middle-end/81657 (FAIL: gcc.dg/20050503-1.c scan-assembler-not call)
PR middle-end/81657
* expr.h (enum block_op_methods): Add BLOCK_OP_NO_LIBCALL_RET.
* expr.c (emit_block_move_hints): Handle BLOCK_OP_NO_LIBCALL_RET.
* builtins.c (expand_builtin_memory_copy_args): Use
BLOCK_OP_NO_LIBCALL_RET method for mempcpy with non-ignored target,
handle dest_addr == pc_rtx.
* gcc.dg/string-opt-1.c: Remove bogus comment. Expect a mempcpy
call.
Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r259366
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index ababee5..93c617e 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -3650,12 +3650,16 @@ expand_builtin_memory_copy_args (tree dest, tree src, tree len, set_mem_align (src_mem, src_align); /* Copy word part most expediently. */ - dest_addr = emit_block_move_hints (dest_mem, src_mem, len_rtx, - CALL_EXPR_TAILCALL (exp) - && (endp == 0 || target == const0_rtx) - ? BLOCK_OP_TAILCALL : BLOCK_OP_NORMAL, + enum block_op_methods method = BLOCK_OP_NORMAL; + if (CALL_EXPR_TAILCALL (exp) && (endp == 0 || target == const0_rtx)) + method = BLOCK_OP_TAILCALL; + if (endp == 1 && target != const0_rtx) + method = BLOCK_OP_NO_LIBCALL_RET; + dest_addr = emit_block_move_hints (dest_mem, src_mem, len_rtx, method, expected_align, expected_size, min_size, max_size, probable_max_size); + if (dest_addr == pc_rtx) + return NULL_RTX; if (dest_addr == 0) { |