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| author | Jakub Jelinek <jakub@redhat.com> | 2022-01-19 09:26:13 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2022-01-19 09:26:13 +0100 |
| commit | b834435c8fa4cb9424787fe3044a49fef7992de8 (patch) | |
| tree | 229604493332e62ed597166cf8cac53a00edeac6 /gcc/bitmap.cc | |
| parent | 29a6db635f5eb38ba34d15a6ee35b00e753740e4 (diff) | |
| download | gcc-b834435c8fa4cb9424787fe3044a49fef7992de8.zip gcc-b834435c8fa4cb9424787fe3044a49fef7992de8.tar.gz gcc-b834435c8fa4cb9424787fe3044a49fef7992de8.tar.bz2 | |
fold-const: Optimize &"foo"[0] == "foo" [PR89074]
This is a non-C++ related part from the PR89074 address_compare changes.
For "foo" == "foo" we already optimize this from the (cmp @0 @0)
simplification, because we use operand_equal_p in that case
and operand_equal_p also compares the STRING_CSTs bytes rather than
just addresses.
2022-01-19 Jakub Jelinek <jakub@redhat.com>
PR c++/89074
* fold-const.cc (address_compare): Consider different STRING_CSTs
with the same lengths that memcmp the same as equal, not different.
* gcc.dg/tree-ssa/pr89074.c: New test.
Diffstat (limited to 'gcc/bitmap.cc')
0 files changed, 0 insertions, 0 deletions