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| author |   patrick <patrick@openbsd.org> | 2019-06-23 21:36:31 +0000 |
|---|---|---|
| committer | patrick <patrick@openbsd.org> | 2019-06-23 21:36:31 +0000 |
| commit | 23f101f37937a1bd4a29726cab2f76e0fb038b35 (patch) | |
| tree | f7da7d6b32c2e07114da399150bfa88d72187012 /gnu/llvm/lib/CodeGen/MachineCombiner.cpp | |
| parent | sort previous; ok deraadt (diff) | |
| download | wireguard-openbsd-23f101f37937a1bd4a29726cab2f76e0fb038b35.tar.xz wireguard-openbsd-23f101f37937a1bd4a29726cab2f76e0fb038b35.zip | |
Import LLVM 8.0.0 release including clang, lld and lldb.
Diffstat (limited to 'gnu/llvm/lib/CodeGen/MachineCombiner.cpp')
| -rw-r--r-- | gnu/llvm/lib/CodeGen/MachineCombiner.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gnu/llvm/lib/CodeGen/MachineCombiner.cpp b/gnu/llvm/lib/CodeGen/MachineCombiner.cpp index 0c6efff7bb4..f51b482e20e 100644 --- a/gnu/llvm/lib/CodeGen/MachineCombiner.cpp +++ b/gnu/llvm/lib/CodeGen/MachineCombiner.cpp @@ -231,6 +231,8 @@ unsigned MachineCombiner::getLatency(MachineInstr *Root, MachineInstr *NewRoot, // Get the first instruction that uses MO MachineRegisterInfo::reg_iterator RI = MRI->reg_begin(MO.getReg()); RI++; + if (RI == MRI->reg_end()) + continue; MachineInstr *UseMO = RI->getParent(); unsigned LatencyOp = 0; if (UseMO && BlockTrace.isDepInTrace(*Root, *UseMO)) { |