diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index a87883bbe40..fe3f2b99ba7 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -1974,6 +1974,10 @@ SDValue SelectionDAG::FoldSetCC(EVT VT, SDValue N1, SDValue N2, break; } + // We can always fold X == X for integer setcc's. + if (N1 == N2 && OpVT.isInteger()) + return getBoolConstant(ISD::isTrueWhenEqual(Cond), dl, VT, OpVT); + if (ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2)) { const APInt &C2 = N2C->getAPIntValue(); if (ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1)) { |
