Adjust ppc set_AV_CR6 computation to help Memcheck instrumentation.
commit01f1936b1238a3bbeaf2821b61ecb36ba0ae15b1
authorJulian Seward <jseward@acm.org>
Mon, 10 Dec 2018 16:18:20 +0000 (10 17:18 +0100)
committerMark Wielaard <mark@klomp.org>
Thu, 20 Dec 2018 21:46:59 +0000 (20 22:46 +0100)
treede27fc1ba8c2a2573973c7595b11d3337b4bbebe
parent3ef4b2c780ea76a80ae5beaa63c1cb1d6530988b
Adjust ppc set_AV_CR6 computation to help Memcheck instrumentation.

* changes set_AV_CR6 so that it does scalar comparisons against zero,
  rather than sometimes against an all-ones word.  This is something
  that Memcheck can instrument exactly.

* in Memcheck, requests expensive instrumentation of Iop_Cmp{EQ,NE}64
  by default on ppc64le.

https://bugs.kde.org/show_bug.cgi?id=386945#c62
VEX/priv/guest_ppc_toIR.c
memcheck/mc_translate.c