diff options
| author |   Rasmus Villemoes <linux@rasmusvillemoes.dk> | 2015-01-16 15:39:56 +0100 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2015-02-18 08:31:06 -0800 |
| commit | f3070e7efdc37a84fa63cbe84ac4febc87440121 (patch) | |
| tree | 95ca4251d6c867bb977203f4eaab3185b5a115a3 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | RDMA/ocrdma: Help gcc generate better code for ocrdma_srq_toggle_bit (diff) | |
| download | wireguard-linux-f3070e7efdc37a84fa63cbe84ac4febc87440121.tar.xz wireguard-linux-f3070e7efdc37a84fa63cbe84ac4febc87440121.zip | |
RDMA/ocrdma: Use unsigned for bit index
In the expressions idx/32 and idx%32, both idx and 32 have signed
type, and unfortunately the C standard prescribes rounding to 0, so
unless gcc can prove that idx is non-negative, these cannot be
implemented as simple shift respectively mask operations. Help gcc by
changing the type of idx to unsigned - this cuts another few
instructions from the generated code.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions