Created attachment 36309 [details]
Sample code to reproduce the error
Running user code that uses a 32-bit Goto BLAS library through memcheck (from the valgrind 3.5.0 release or earlier releases) does issue a
vex x86->IR: unhandled instruction bytes: 0xF 0xE 0x89 0xE6
A sample code using the critical DTRSM BLAS function is attached. Get Goto BLAS
at http://www-prc.tacc.utexas.edu/resources/software/software.php?#blas, unpack,
compile it on a 32-bit Linux machine using ./quickbuild.32bit. Then, compile the
sample code, link it against Goto BLAS and run valgrind against it:
gfortran -g sample.f90 -lgoto
valgrind will bail out with above mentioned message.
This error is related to http://bugs.kde.org/show_bug.cgi?id=124499 in that this one occurs on x86 while #124499 occurred on x86_64. (It has been reported to the mailing list today.)
I'll provide a patch along with the first comment because there is only one file upload per comment allowed.
Created attachment 36310 [details]
Suggested patch, analogous to patch for #124499, compare VEX/priv/guest_amd64_toIR.c revision 1604
Committed as VEX r2192.