[analyzer] Hotfix for build failure due to declaration shadowing in r276782.

CloneDetector member variable is shadowing the class with the same name,
which causes build failures on some platforms.

[analyzer] Hotfix for build failure due to declaration shadowing in r276782.

CloneDetector member variable is shadowing the class with the same name,
which causes build failures on some platforms.

llvm-svn: 276791

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[analyzer] Add basic capabilities to detect source code clones.

This patch adds the CloneDetector class which allows searching source code
for clones.

For every statement or group of statements wit

[analyzer] Add basic capabilities to detect source code clones.

This patch adds the CloneDetector class which allows searching source code
for clones.

For every statement or group of statements within a compound statement,
CloneDetector computes a hash value, and finds clones by detecting
identical hash values.

This initial patch only provides a simple hashing mechanism
that hashes the kind of each sub-statement.

This patch also adds CloneChecker - a simple static analyzer checker
that uses CloneDetector to report copy-pasted code.

Patch by Raphael Isemann!

Differential Revision: https://reviews.llvm.org/D20795

llvm-svn: 276782

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