Check compatibility of vector types using their canonicalizations.
Fixes an assertion arising C overload analysis, but really I can't imagine
that this wouldn't cause a thousand other uncaught failures.

Fixes PR6600.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98400 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed