Improve error messages in order to help with fixing a big-endian bug.

Summary: Added output to stderr so that we can actually see what is happening when the test fails on big endian.

Reviewers: zturner

Subscribers: llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D34155

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305314 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed