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| author | Alexey Samsonov <samsonov@google.com> | 2013-08-15 07:11:34 +0000 |
|---|---|---|
| committer | Alexey Samsonov <samsonov@google.com> | 2013-08-15 07:11:34 +0000 |
| commit | 84e51517e25119419d53d6ed61fef15219efd733 (patch) | |
| tree | 1fe0aaa359b9109e8c1600eba9ebec5e84a44d4a /lib | |
| parent | 07ad0c4c99cb704d4f3e1bc1ba3bb1b194efe572 (diff) | |
| download | external_llvm-84e51517e25119419d53d6ed61fef15219efd733.zip external_llvm-84e51517e25119419d53d6ed61fef15219efd733.tar.gz external_llvm-84e51517e25119419d53d6ed61fef15219efd733.tar.bz2 | |
Tentative fix for global-buffer-overflow caused by r188426. Found by AddressSanitizer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188448 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/R600/AMDGPUISelDAGToDAG.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Target/R600/AMDGPUISelDAGToDAG.cpp b/lib/Target/R600/AMDGPUISelDAGToDAG.cpp index 22bdb90..77ca885 100644 --- a/lib/Target/R600/AMDGPUISelDAGToDAG.cpp +++ b/lib/Target/R600/AMDGPUISelDAGToDAG.cpp @@ -115,7 +115,10 @@ const TargetRegisterClass *AMDGPUDAGToDAGISel::getOperandRegClass(SDNode *N, switch (N->getMachineOpcode()) { default: { const MCInstrDesc &Desc = TM.getInstrInfo()->get(N->getMachineOpcode()); - int RegClass = Desc.OpInfo[Desc.getNumDefs() + OpNo].RegClass; + unsigned OpIdx = Desc.getNumDefs() + OpNo; + if (OpIdx >= Desc.getNumOperands()) + return NULL; + int RegClass = Desc.OpInfo[OpIdx].RegClass; if (RegClass == -1) { return NULL; } |