diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp index fd89108392..d0fd6b4f64 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp @@ -1923,6 +1923,10 @@ bool SelectionDAGLowering::handleBitTestsSwitchCase(CaseRec& CR, // inserting any additional MBBs necessary to represent the switch. MachineFunction *CurMF = CurMBB->getParent(); + // If target does not have legal shift left, do not emit bit tests at all. + if (!TLI.isOperationLegal(ISD::SHL, TLI.getPointerTy())) + return false; + size_t numCmps = 0; for (CaseItr I = CR.Range.first, E = CR.Range.second; I!=E; ++I) { |