Changes

Summary

Commit ed1e565aaff6a2b6ad9064bcc58c50a46100a836 by mtrofin [NFC] factor update test function test builder as a class This allows us to have shared logic over multiple test runs, e.g. do we have unused prefixes, or which function bodies have conflicting outputs for a prefix appearing in different RUN lines. This patch is just wrapping existing functionality, and replacing its uses. A subsequent patch would then fold the current functionality into the newly introduced class. Differential Revision: https://reviews.llvm.org/D93413
	llvm/utils/UpdateTestChecks/asm.py
	llvm/utils/update_analyze_test_checks.py
	llvm/utils/update_cc_test_checks.py
	llvm/utils/update_llc_test_checks.py
	llvm/utils/update_test_checks.py
	llvm/utils/UpdateTestChecks/common.py
Commit 5501b9295762ab824ae11cf64b33b16e314bb7d2 by kazu [IR, CodeGen] Use llvm::is_contained (NFC)
	llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
	llvm/include/llvm/IR/DataLayout.h
Commit 4ad5b634f6834331c526d0a06ade34aa35670d52 by kazu [GCN] Remove unused function handleNewInstruction (NFC) The function was added without a user on Dec 22, 2016 in commit 7e274e02ae088923e67cd13b99d52644532ad1cc. It seems to be unused since then.
	llvm/lib/Transforms/Scalar/NewGVN.cpp