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Pavel Labath
277cedda80
Summary: Unnormal values are a feature of some very old x87 processors. We handle them correctly for the most part -- the only exception was an unnormal value whose significand happened to be zero. In this case the APFloat was still initialized as normal number (category = fcNormal), but a subsequent toString operation would assert because the math would produce nonsensical values for the zero significand. During review, it was decided that the correct way to fix this is to treat all unnormal values as NaNs (as that is what any >=386 processor will do). The issue was discovered because LLDB would crash when trying to print some "long double" values. Reviewers: skatkov, scanon, gottesmm Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D41868 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331884 91177308-0d34-0410-b5e6-96231b3b80d8
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