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| author | Devang Patel <dpatel@apple.com> | 2011-10-10 20:32:03 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2011-10-10 20:32:03 +0000 |
| commit | 6b50bc9d88538c155503582b095fdba518070257 (patch) | |
| tree | 508160c6a12a4a462d7060ee84fcfae163bc8b81 /lib/CodeGen | |
| parent | 819a2abc72e9e27d105ebc085aac09c6029db4a6 (diff) | |
| download | llvm-6b50bc9d88538c155503582b095fdba518070257.tar.gz llvm-6b50bc9d88538c155503582b095fdba518070257.tar.bz2 llvm-6b50bc9d88538c155503582b095fdba518070257.tar.xz | |
If loop header is also loop exiting block then it may not be safe to hoist instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141576 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/MachineLICM.cpp | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/lib/CodeGen/MachineLICM.cpp b/lib/CodeGen/MachineLICM.cpp index f8cbe41b94..bd25b2c6b6 100644 --- a/lib/CodeGen/MachineLICM.cpp +++ b/lib/CodeGen/MachineLICM.cpp @@ -1145,13 +1145,12 @@ bool MachineLICM::IsGuaranteedToExecute(MachineInstr *MI) { return true; // Get the exit blocks for the current loop. - SmallVector<MachineBasicBlock*, 8> ExitBlocks; - CurLoop->getExitingBlocks(ExitBlocks); + SmallVector<MachineBasicBlock*, 8> ExitingBlocks; + CurLoop->getExitingBlocks(ExitingBlocks); // Verify that the block dominates each of the exit blocks of the loop. - for (unsigned i = 0, e = ExitBlocks.size(); i != e; ++i) - if (ExitBlocks[i] != CurLoop->getHeader() && - !DT->dominates(MI->getParent(), ExitBlocks[i])) + for (unsigned i = 0, e = ExitingBlocks.size(); i != e; ++i) + if (!DT->dominates(MI->getParent(), ExitingBlocks[i])) return false; return true; |