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author | Chris Metcalf <cmetcalf@mellanox.com> | 2017-01-16 15:38:25 -0500 |
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committer | Chris Metcalf <cmetcalf@mellanox.com> | 2017-01-16 15:44:48 -0500 |
commit | 502697713f4f129b602d7213253a9982ee1989f1 (patch) | |
tree | 933c5eb4537e278df0cb0e2e664c40bc0afe6b38 /sysdeps/sparc | |
parent | 4cb89c158124c27006903f10e309b09d5311053a (diff) | |
download | glibc-502697713f4f129b602d7213253a9982ee1989f1.tar.gz glibc-502697713f4f129b602d7213253a9982ee1989f1.tar.xz glibc-502697713f4f129b602d7213253a9982ee1989f1.zip |
tile: Check for pointer add overflow in memchr
As was done in b224637928e9, check for large size causing an overflow in the loop that walks over the array. Branching out of line here is the fastest approach for handling this problem, since tile can bundle the instructions to compute the branch test in parallel with doing the required memchr loop setup computation. Unfortunately, the existing saturated ops (e.g. tilegx addxsc) are all signed saturing ops, so don't help with unsigned saturation.
Diffstat (limited to 'sysdeps/sparc')
0 files changed, 0 insertions, 0 deletions