diff options
| author | Martin Sebor <msebor@redhat.com> | 2018-07-26 16:45:43 +0000 |
|---|---|---|
| committer | Martin Sebor <msebor@gcc.gnu.org> | 2018-07-26 10:45:43 -0600 |
| commit | aca8570e11d28b8c33d26593df6d4725a6140aab (patch) | |
| tree | bea2270f62332f8d85e1bcd3adcb0c246cb32648 /gcc/builtins.c | |
| parent | 4b8b1f5997e7f16713be5c05e7fd40c122fa9381 (diff) | |
| download | gcc-aca8570e11d28b8c33d26593df6d4725a6140aab.zip gcc-aca8570e11d28b8c33d26593df6d4725a6140aab.tar.gz gcc-aca8570e11d28b8c33d26593df6d4725a6140aab.tar.bz2 | |
PR tree-optimization/86043 - strlen after memcpy partially overwriting a string not optimized
PR tree-optimization/86043 - strlen after memcpy partially overwriting a string not optimized
PR tree-optimization/86042 - missing strlen optimization after second strcpy
gcc/ChangeLog:
PR tree-optimization/86043
PR tree-optimization/86042
* tree-ssa-strlen.c (handle_builtin_memcpy): Handle strict overlaps.
(get_string_cst_length): Rename...
(get_min_string_length): ...to this. Add argument.
(handle_char_store): Extend to handle multi-character stores by
MEM_REF.
* tree.c (initializer_zerop): Use new argument. Handle MEM_REF.
* tree.h (initializer_zerop): Add argument.
gcc/testsuite/ChangeLog:
PR tree-optimization/86043
PR tree-optimization/86042
* gcc/testsuite/gcc.dg/attr-nonstring-2.c: Xfail test cases due to
pr86688.
* gcc.dg/strlenopt-44.c: New test.
From-SVN: r263018
Diffstat (limited to 'gcc/builtins.c')
0 files changed, 0 insertions, 0 deletions