diff options
| author | Hans Wennborg <hans@hanshq.net> | 2018-08-30 09:34:31 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2018-08-30 09:34:31 +0000 |
| commit | 224408d4a228ef685cc11e23a04e83b75dbd36e9 (patch) | |
| tree | df60f96fa238203b2ff7506067b8186f5b4409e9 /lib | |
| parent | c19f813b10c10de39de1e4c9636a367777668100 (diff) | |
Merging r340900:
------------------------------------------------------------------------
r340900 | hans | 2018-08-29 08:55:27 +0200 (Wed, 29 Aug 2018) | 6 lines
LoopSink: Don't sink into blocks without an insertion point (PR38462)
In the PR, LoopSink was trying to sink into a catchswitch block, which
doesn't have a valid insertion point.
Differential Revision: https://reviews.llvm.org/D51307
------------------------------------------------------------------------
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_70@341048 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/LoopSink.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopSink.cpp b/lib/Transforms/Scalar/LoopSink.cpp index 760177c9c5e..7d62349d471 100644 --- a/lib/Transforms/Scalar/LoopSink.cpp +++ b/lib/Transforms/Scalar/LoopSink.cpp @@ -152,6 +152,14 @@ findBBsToSinkInto(const Loop &L, const SmallPtrSetImpl<BasicBlock *> &UseBBs, } } + // Can't sink into blocks that have no valid insertion point. + for (BasicBlock *BB : BBsToSinkInto) { + if (BB->getFirstInsertionPt() == BB->end()) { + BBsToSinkInto.clear(); + break; + } + } + // If the total frequency of BBsToSinkInto is larger than preheader frequency, // do not sink. if (adjustedSumFreq(BBsToSinkInto, BFI) > |