[Bug 92214] Flightgear crashes during splashboot with R600 driver, LLVM 3.7.0 and mesa 11.0.2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92214

--- Comment #28 from Barto <mister.freeman at laposte.net> ---
another discovery :

in qemu I can set a type of CPU ( pentium, pentium2, pentium2, core2duo,
SandyBridge and many more ), you can see the CPUs list with the command
"qemu-i386 -cpu ?",

until now I used the qemu option "-cpu host", which means that it's the CPU of
the host who is emulated ( my pentium dual core E6800 ),

then I decided to set a different CPU name in my qemu script :

-cpu core2duo -enable-kvm  -machine type=pc,accel=kvm -smp 2

with this setting the bug disapears, all is ok in my virtual machine, glxgears
and all openGL programs can run without crash, the mesa driver llvmpipe doesn't
crash,

after that I decided to do set again another CPU in qemu :

-cpu Penryn -enable-kvm  -machine type=pc,accel=kvm -smp 2 \

with "Penryn" CPU the bug is back in my virtual machine, which means that the
bug seems related to the type of CPU, llvm 3.7.0 lib may have a bug when he
tries to generate binary code, it fails with some CPUs,

this problem doesn't exist with llvm 3.6.2 lib

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