[ORC] Fix hex printing of uint64_t values.

A plain "%x" format string will drop the high 32-bits. Use the PRIx64 macro
instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@345696 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed