diff options
| -rw-r--r-- | lib/Target/PowerPC/PPCISelDAGToDAG.cpp | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp index 89f0f64223..2503e26e61 100644 --- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp +++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp @@ -685,16 +685,20 @@ SDOperand PPC32DAGToDAGISel::Select(SDOperand Op) { unsigned v = (unsigned)cast<ConstantSDNode>(N)->getValue(); unsigned Hi = HA16(v); unsigned Lo = Lo16(v); + + // NOTE: This doesn't use SelectNodeTo, because doing that will prevent + // folding shared immediates into other the second instruction that + // uses it. if (Hi && Lo) { SDOperand Top = CurDAG->getTargetNode(PPC::LIS, MVT::i32, getI32Imm(v >> 16)); - CurDAG->SelectNodeTo(N, PPC::ORI, MVT::i32, Top, getI32Imm(v & 0xFFFF)); + return CurDAG->getTargetNode(PPC::ORI, MVT::i32, Top, + getI32Imm(v & 0xFFFF)); } else if (Lo) { - CurDAG->SelectNodeTo(N, PPC::LI, MVT::i32, getI32Imm(v)); + return CurDAG->getTargetNode(PPC::LI, MVT::i32, getI32Imm(v)); } else { - CurDAG->SelectNodeTo(N, PPC::LIS, MVT::i32, getI32Imm(v >> 16)); + return CurDAG->getTargetNode(PPC::LIS, MVT::i32, getI32Imm(v >> 16)); } - break; } case ISD::UNDEF: if (N->getValueType(0) == MVT::i32) |