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| author | Jakub Jelinek <jakub@redhat.com> | 2004-09-15 10:19:39 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2004-09-15 10:19:39 +0200 |
| commit | 9a520f407392f0a984e7b74aa819e9f6eb3b0b90 (patch) | |
| tree | 77eadc5f7abf659773934ba55f1eee0b30a67d3d /gcc/builtins.c | |
| parent | b1d16eff57d17fbab7430d7098ed6ea6144d45f7 (diff) | |
| download | gcc-9a520f407392f0a984e7b74aa819e9f6eb3b0b90.zip gcc-9a520f407392f0a984e7b74aa819e9f6eb3b0b90.tar.gz gcc-9a520f407392f0a984e7b74aa819e9f6eb3b0b90.tar.bz2 | |
builtins.c (expand_builtin_memmove): Optimize memmove (x, y, 1) into memcpy (x, y, 1) if memcpy can be expanded inline.
* builtins.c (expand_builtin_memmove): Optimize memmove (x, y, 1)
into memcpy (x, y, 1) if memcpy can be expanded inline.
* gcc.c-torture/execute/builtins/memmove.c (main_test): Formatting.
* gcc.c-torture/execute/builtins/memmove-2.c: New test.
* gcc.c-torture/execute/builtins/memmove-2-lib.c: New.
From-SVN: r87539
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 34dceb9..bf5ec08 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -2940,6 +2940,16 @@ expand_builtin_memmove (tree arglist, rtx target, enum machine_mode mode) target, mode, EXPAND_NORMAL); } + /* If length is 1 and we can expand memcpy call inline, + it is ok to use memcpy as well. */ + if (integer_onep (len)) + { + rtx ret = expand_builtin_mempcpy (arglist, target, mode, + /*endp=*/0); + if (ret) + return ret; + } + /* Otherwise, call the normal function. */ return 0; } |