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Summary: This patch makes use of AtomicExpandPass in Power for inserting fences around atomic as part of an effort to remove fence insertion from SelectionDAGBuilder. As a big bonus, it lets us use sync 1 (lightweight sync, often used by the mnemonic lwsync) instead of sync 0 (heavyweight sync) in many cases. I also added a test, as there was no test for the barriers emitted by the Power backend for atomic loads and stores. Test Plan: new test + make check-all Reviewers: jfb Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D5180 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218331 91177308-0d34-0410-b5e6-96231b3b80d8 |
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CPP | ||
Generic | ||
Hexagon | ||
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PowerPC | ||
R600 | ||
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XCore |