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authorSanjay Patel <spatel@rotateright.com>2017-02-03 21:43:34 +0000
committerSanjay Patel <spatel@rotateright.com>2017-02-03 21:43:34 +0000
commit73fc8ddb065112fbb7cad1453774ed96bbb7d6e3 (patch)
treeba2c3ab04aba252f1c73bad9b5a480c056530f0f /lldb/source/Plugins/ScriptInterpreter/Python/lldb-python.h
parent25324313325e906368fafd142bc6138c231e0b44 (diff)
downloadbcm5719-llvm-73fc8ddb065112fbb7cad1453774ed96bbb7d6e3.tar.gz
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[InstCombine] fix operand-complexity-based canonicalization (PR28296)
The code comments didn't match the code logic, and we didn't actually distinguish the fake unary (not/neg/fneg) operators from arguments. Adding another level to the weighting scheme provides more structure and can help simplify the pattern matching in InstCombine and other places. I fixed regressions that would have shown up from this change in: rL290067 rL290127 But that doesn't mean there are no pattern-matching logic holes left; some combines may just be missing regression tests. Should fix: https://llvm.org/bugs/show_bug.cgi?id=28296 Differential Revision: https://reviews.llvm.org/D27933 llvm-svn: 294049
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