valgrind fails on 10.6.8 x86_64 with assembler errors: {standard input}:1352:no such instruction: `rdrand %r11d'

[barracuda156]

:info:build /usr/bin/gcc-4.2 -std=gnu99 -DHAVE_CONFIG_H -I. -I..  -I.. -I../include -I../include -I../VEX/pub -I../VEX/pub -DVGA_amd64=1 -DVGO_darwin=1 -DVGP_amd64_darwin=1 -DVGPV_amd64_darwin_vanilla=1  -Ipriv -I/opt/x86_64/include  -arch x86_64 -O2 -g -Wall -Wmissing-prototypes -Wshadow -Wpointer-arith -Wstrict-prototypes -Wmissing-declarations -Wcast-align -Wcast-qual -Wwrite-strings -Wempty-body -Wformat -Wformat-security -finline-functions -fno-stack-protector -fno-strict-aliasing -fno-builtin  -mmacosx-version-min=10.6  -Wbad-function-cast -fstrict-aliasing -pipe -Os -MT priv/libvex_amd64_darwin_a-guest_ppc_helpers.o -MD -MP -MF priv/.deps/libvex_amd64_darwin_a-guest_ppc_helpers.Tpo -c -o priv/libvex_amd64_darwin_a-guest_ppc_helpers.o `test -f 'priv/guest_ppc_helpers.c' || echo './'`priv/guest_ppc_helpers.c
:info:build {standard input}:1352:no such instruction: `rdrand %r11d'
:info:build mv -f priv/.deps/libvex_amd64_darwin_a-guest_ppc_helpers.Tpo priv/.deps/libvex_amd64_darwin_a-guest_ppc_helpers.Po
:info:build /usr/bin/gcc-4.2 -std=gnu99 -DHAVE_CONFIG_H -I. -I..  -I.. -I../include -I../include -I../VEX/pub -I../VEX/pub -DVGA_amd64=1 -DVGO_darwin=1 -DVGP_amd64_darwin=1 -DVGPV_amd64_darwin_vanilla=1  -Ipriv -I/opt/x86_64/include  -arch x86_64 -O2 -g -Wall -Wmissing-prototypes -Wshadow -Wpointer-arith -Wstrict-prototypes -Wmissing-declarations -Wcast-align -Wcast-qual -Wwrite-strings -Wempty-body -Wformat -Wformat-security -finline-functions -fno-stack-protector -fno-strict-aliasing -fno-builtin  -mmacosx-version-min=10.6  -Wbad-function-cast -fstrict-aliasing -pipe -Os -MT priv/libvex_amd64_darwin_a-guest_ppc_toIR.o -MD -MP -MF priv/.deps/libvex_amd64_darwin_a-guest_ppc_toIR.Tpo -c -o priv/libvex_amd64_darwin_a-guest_ppc_toIR.o `test -f 'priv/guest_ppc_toIR.c' || echo './'`priv/guest_ppc_toIR.c
:info:build mv -f priv/.deps/libvex_amd64_darwin_a-ir_defs.Tpo priv/.deps/libvex_amd64_darwin_a-ir_defs.Po
:info:build /usr/bin/gcc-4.2 -std=gnu99 -DHAVE_CONFIG_H -I. -I..  -I.. -I../include -I../include -I../VEX/pub -I../VEX/pub -DVGA_amd64=1 -DVGO_darwin=1 -DVGP_amd64_darwin=1 -DVGPV_amd64_darwin_vanilla=1  -Ipriv -I/opt/x86_64/include  -arch x86_64 -O2 -g -Wall -Wmissing-prototypes -Wshadow -Wpointer-arith -Wstrict-prototypes -Wmissing-declarations -Wcast-align -Wcast-qual -Wwrite-strings -Wempty-body -Wformat -Wformat-security -finline-functions -fno-stack-protector -fno-strict-aliasing -fno-builtin  -mmacosx-version-min=10.6  -Wbad-function-cast -fstrict-aliasing -pipe -Os -MT priv/libvex_amd64_darwin_a-guest_arm_helpers.o -MD -MP -MF priv/.deps/libvex_amd64_darwin_a-guest_arm_helpers.Tpo -c -o priv/libvex_amd64_darwin_a-guest_arm_helpers.o `test -f 'priv/guest_arm_helpers.c' || echo './'`priv/guest_arm_helpers.c
:info:build make[3]: *** [priv/libvex_amd64_darwin_a-guest_amd64_helpers.o] Error 1
:info:build make[3]: *** Waiting for unfinished jobs....