Relax the assertion in cmpInlineAsm

https://bugs.llvm.org/show_bug.cgi?id=37339

Author: nox

lib/Transforms/Utils/FunctionComparator.cpp

@@ -710,7 +710,7 @@ int FunctionComparator::cmpInlineAsm(const InlineAsm *L,
     return Res;
   if (int Res = cmpNumbers(L->getDialect(), R->getDialect()))
     return Res;
-  llvm_unreachable("InlineAsm blocks were not uniqued.");
+  assert(L->getFunctionType() != R->getFunctionType());
   return 0;
 }