about summary refs log tree commit diff
path: root/nptl/pthread_setcancelstate.c
diff options
context:
space:
mode:
authorAdhemerval Zanella <azanella@linux.vnet.ibm.com>2013-03-29 18:15:28 -0500
committerAdhemerval Zanella <azanella@linux.vnet.ibm.com>2013-04-01 06:36:51 -0500
commit60c414c346a1d5ef0510ffbdc0ab75f288ee4d3f (patch)
tree479eb937a9496619acfb24db9a6a48831f9c3fb3 /nptl/pthread_setcancelstate.c
parent6142896d53d0e8e8abe5dd0494380c45acc1a919 (diff)
downloadglibc-60c414c346a1d5ef0510ffbdc0ab75f288ee4d3f.tar.gz
glibc-60c414c346a1d5ef0510ffbdc0ab75f288ee4d3f.tar.xz
glibc-60c414c346a1d5ef0510ffbdc0ab75f288ee4d3f.zip
PowerPC: remove branch prediction from rint implementation
The branch prediction hints is actually hurts performance in this case.
The assembly implementation make two assumptions: 1. 'fabs (x) < 2^52'
is unlikely and 2. 'x > 0.0' is unlike (if 1. is true). Since it a
general floating point function, expected input is not bounded and then
it is better to let the hardware handle the branches.
Diffstat (limited to 'nptl/pthread_setcancelstate.c')
0 files changed, 0 insertions, 0 deletions