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| author | Sanjoy Das <sanjoy@playingwithpointers.com> | 2017-02-25 20:30:45 +0000 |
|---|---|---|
| committer | Sanjoy Das <sanjoy@playingwithpointers.com> | 2017-02-25 20:30:45 +0000 |
| commit | 39a684d1179398a43bf1d241610a681dfaa5250f (patch) | |
| tree | d7aea911075dab857fb11c6debc722ed869c2ad5 /lldb/packages/Python/lldbsuite/test/python_api/thread/main.cpp | |
| parent | 0f5fb5f54909c4dc2b7739124c6d6799098f2806 (diff) | |
| download | bcm5719-llvm-39a684d1179398a43bf1d241610a681dfaa5250f.tar.gz bcm5719-llvm-39a684d1179398a43bf1d241610a681dfaa5250f.zip | |
[ValueTracking] Don't do an unchecked shift in ComputeNumSignBits
Summary:
Previously we used to return a bogus result, 0, for IR like `ashr %val,
-1`.
I've also added an assert checking that `ComputeNumSignBits` at least
returns 1. That assert found an already checked in test case where we
were returning a bad result for `ashr %val, -1`.
Fixes PR32045.
Reviewers: spatel, majnemer
Reviewed By: spatel, majnemer
Subscribers: efriedma, mcrosier, llvm-commits
Differential Revision: https://reviews.llvm.org/D30311
llvm-svn: 296273
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/python_api/thread/main.cpp')
0 files changed, 0 insertions, 0 deletions
