[PATCH] [X86] Fix pattern match for 32-to-64-bit zext in the presence of AssertSext

[Nadav Rotem]

Michael, 

Is there a way to reduce the size of the testcase? Do you need two basic blocks?  Can you add additional check lines to make sure that the ‘mov’ that you are matching is the one you are expecting?

Thanks,
Nadav

http://reviews.llvm.org/D6128