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| author | Chris Lattner <sabre@nondot.org> | 2008-01-05 01:39:17 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-01-05 01:39:17 +0000 |
| commit | 9bb459b55411c45175e599f6f421b7a57060ee57 (patch) | |
| tree | 54fec129fe5809a42c76dfa1cfb759c94ea318c9 /lib/CodeGen/MachineSink.cpp | |
| parent | 5a62d0a038b5e4032c88f2a794a91391738c5e90 (diff) | |
| download | llvm-9bb459b55411c45175e599f6f421b7a57060ee57.tar.gz llvm-9bb459b55411c45175e599f6f421b7a57060ee57.tar.bz2 llvm-9bb459b55411c45175e599f6f421b7a57060ee57.tar.xz | |
fix a common crash.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45614 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineSink.cpp')
| -rw-r--r-- | lib/CodeGen/MachineSink.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineSink.cpp b/lib/CodeGen/MachineSink.cpp index 0665e87f67..dff60f6d39 100644 --- a/lib/CodeGen/MachineSink.cpp +++ b/lib/CodeGen/MachineSink.cpp @@ -180,6 +180,10 @@ bool MachineSinking::SinkInstruction(MachineInstr *MI) { } } + // If there are no outputs, it must have side-effects. + if (SuccToSinkTo == 0) + return false; + // FIXME: Check that the instr doesn't have side effects etc. DEBUG(cerr << "Sink instr " << *MI); |