[llvm-commits] PATCH: Efficient constant uniquing

[Talin]

This patch improves performance and memory usage for uniquing of
ConstantStruct, ConstantArray, and ConstantVector. It's been verified to
work both by myself and Meador Inge.

I'm posting it here because I wasn't sure if attaching it to the bug (
http://llvm.org/bugs/show_bug.cgi?id=1210) was sufficient to get approval
for submission.

-- 
-- Talin
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