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| author | Owen Anderson <resistor@mac.com> | 2010-09-29 20:34:41 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2010-09-29 20:34:41 +0000 |
| commit | 36c4debc94e7c68c769dfda781851a0c963dd746 (patch) | |
| tree | 33eccf15a31f7d37f448c45f09fed1c3af23147f /lib/Analysis/DebugInfo.cpp | |
| parent | 18d52f2fb551c295bbce4c7d7357f4050b06e926 (diff) | |
| download | external_llvm-36c4debc94e7c68c769dfda781851a0c963dd746.zip external_llvm-36c4debc94e7c68c769dfda781851a0c963dd746.tar.gz external_llvm-36c4debc94e7c68c769dfda781851a0c963dd746.tar.bz2 | |
Fix PR8247: JumpThreading can cause a block to become unreachable while still having predecessor, if it is part of a self-loop.
Because of this, we cannot use the Simplify* APIs, as they can assert-fail on unreachable code. Since it's not easy to determine
if a given threading will cause a block to become unreachable, simply defer simplifying simplification to later InstCombine and/or
DCE passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115082 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/DebugInfo.cpp')
0 files changed, 0 insertions, 0 deletions