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| author | Max Kazantsev <max.kazantsev@azul.com> | 2019-02-12 09:59:44 +0000 |
|---|---|---|
| committer | Max Kazantsev <max.kazantsev@azul.com> | 2019-02-12 09:59:44 +0000 |
| commit | 2a184af221854262d713b82ea014cfbcc0004b48 (patch) | |
| tree | 88028514210cfe57745f13b702090e9b28d32af3 /lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h | |
| parent | 8e0d5ac715a86766966d298a411f67aeba414312 (diff) | |
| download | bcm5719-llvm-2a184af221854262d713b82ea014cfbcc0004b48.tar.gz bcm5719-llvm-2a184af221854262d713b82ea014cfbcc0004b48.zip | |
[IndVars] Fix corner case with unreachable Phi inputs. PR40454
Logic in `getInsertPointForUses` doesn't account for a corner case when `Def`
only comes to a Phi user from unreachable blocks. In this case, the incoming
value may be arbitrary (and not even available in the input block) and break
the loop-related invariants that are asserted below.
In fact, if we encounter this situation, no IR modification is needed. This
Phi will be simplified away with nearest cleanup.
Differential Revision: https://reviews.llvm.org/D58045
Reviewed By: spatel
llvm-svn: 353816
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.h')
0 files changed, 0 insertions, 0 deletions
