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dd402588b5
the basic block and is stable across runs in gdb or valgrind. Make Node::update handle edges which dominate and are tighter than existing edges. Replace makeEqual's "squeeze theorem" code. Fixes miscompilation. Gate the calls to defToOps and opsToDef. Before this, we were getting IG edges about values which weren't even defined in the dominated area. This reduces the size of the IG by about half. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33236 91177308-0d34-0410-b5e6-96231b3b80d8
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