'Tis quite silly to check for a cached version of the entire executable. That

'Tis quite silly to check for a cached version of the entire executable. That
amounts to checking for a completely-native version. We'll cache on a
function-by-function basis instead (in the JIT's CodeEmitter).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9894 91177308-0d34-0410-b5e6-96231b3b80d8