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| author | Bjorn Pettersson <bjorn.a.pettersson@ericsson.com> | 2017-04-12 08:07:55 +0000 |
|---|---|---|
| committer | Bjorn Pettersson <bjorn.a.pettersson@ericsson.com> | 2017-04-12 08:07:55 +0000 |
| commit | 4af0593eccb036b9272552335495ecb626299522 (patch) | |
| tree | 4bdf65d4be7c9f87e07195d78474acdac2b1289f /lldb/packages/Python/lldbsuite/test/python_api/target/TestTargetAPI.py | |
| parent | f8486e31ca228075d4174a10a4c850efc015e77b (diff) | |
| download | bcm5719-llvm-4af0593eccb036b9272552335495ecb626299522.tar.gz bcm5719-llvm-4af0593eccb036b9272552335495ecb626299522.zip | |
[LoadCombine] Avoid analysing dead basic blocks
Summary:
Dead basic blocks may be forming a loop, for which SSA form is
fulfilled, but with a circular def-use chain. LoadCombine could
enter an infinite loop when analysing such dead code. This patch
solves the problem by simply avoiding to analyse all basic blocks
that aren't forward reachable, from function entry, in LoadCombine.
Fixes https://bugs.llvm.org/show_bug.cgi?id=27065
Reviewers: mehdi_amini, chandlerc, grosser, Bigcheese, davide
Reviewed By: davide
Subscribers: dberlin, zzheng, bjope, grandinj, Ka-Ka, materi, jholewinski, llvm-commits, mzolotukhin
Differential Revision: https://reviews.llvm.org/D31032
llvm-svn: 300034
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/python_api/target/TestTargetAPI.py')
0 files changed, 0 insertions, 0 deletions
