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authorRoman Lebedev <lebedev.ri@gmail.com>2019-10-13 17:11:16 +0000
committerRoman Lebedev <lebedev.ri@gmail.com>2019-10-13 17:11:16 +0000
commit8e2561974d98a338bad0a75f981a9b02b672cb5e (patch)
treeb3b52693309dc487c06517a50f359a837093ea2c /lldb/packages/Python/lldbsuite/test/python_api/thread/main.cpp
parent3efafd6c38a4da25b9bbd9a7b09648249a502ebe (diff)
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[NFC][InstCombine] More test for "sign bit test via shifts" pattern (PR43595)
While that pattern is indirectly handled via reassociateShiftAmtsOfTwoSameDirectionShifts(), that incursme one-use restriction on truncation, which is pointless since we know that we'll produce a single instruction. Additionally, *if* we are only looking for sign bit, we don't need shifts to be identical, which isn't the case in general, and is the blocker for me in bug in question: https://bugs.llvm.org/show_bug.cgi?id=43595 llvm-svn: 374726
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