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| author | Jakub Jelinek <jakub@redhat.com> | 2019-02-16 12:20:33 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2019-02-16 12:20:33 +0100 |
| commit | 3140b2ed036c51b9df0fda28b153ebecb4f906ec (patch) | |
| tree | 81cea5780c130ecb2ea39b2cddc613799d6e31dc /gcc/builtins.h | |
| parent | 1f1d52e33df1b07c3d33b9fe377691ebbf4be157 (diff) | |
| download | gcc-3140b2ed036c51b9df0fda28b153ebecb4f906ec.zip gcc-3140b2ed036c51b9df0fda28b153ebecb4f906ec.tar.gz gcc-3140b2ed036c51b9df0fda28b153ebecb4f906ec.tar.bz2 | |
re PR rtl-optimization/66152 (suboptimal load bytes to stack)
PR rtl-optimization/66152
* builtins.h (c_readstr): Declare.
* builtins.c (c_readstr): Remove forward declaration. Add
null_terminated_p argument, if false, read all bytes from the
string instead of stopping after '\0'.
* expr.c (string_cst_read_str): New function.
(store_expr): Use string_cst_read_str instead of
builtin_strncpy_read_str. Try to store by pieces the whole
exp_len first, and only if that fails, split it up into
store by pieces followed by clear_storage. Formatting fix.
* gcc.target/i386/pr66152.c: New test.
From-SVN: r268957
Diffstat (limited to 'gcc/builtins.h')
| -rw-r--r-- | gcc/builtins.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/builtins.h b/gcc/builtins.h index 599c96e..1ffb491 100644 --- a/gcc/builtins.h +++ b/gcc/builtins.h @@ -103,6 +103,7 @@ struct c_strlen_data }; extern tree c_strlen (tree, int, c_strlen_data * = NULL, unsigned = 1); +extern rtx c_readstr (const char *, scalar_int_mode, bool = true); extern void expand_builtin_setjmp_setup (rtx, rtx); extern void expand_builtin_setjmp_receiver (rtx); extern void expand_builtin_update_setjmp_buf (rtx); |