diff options
| -rw-r--r-- | lib/Target/Mips/MipsISelDAGToDAG.cpp | 6 | ||||
| -rw-r--r-- | test/CodeGen/Mips/mips64fpimm0.ll | 7 |
2 files changed, 13 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsISelDAGToDAG.cpp b/lib/Target/Mips/MipsISelDAGToDAG.cpp index b33a4e6..8f3cb55 100644 --- a/lib/Target/Mips/MipsISelDAGToDAG.cpp +++ b/lib/Target/Mips/MipsISelDAGToDAG.cpp @@ -293,6 +293,12 @@ SDNode* MipsDAGToDAGISel::Select(SDNode *Node) { case ISD::ConstantFP: { ConstantFPSDNode *CN = dyn_cast<ConstantFPSDNode>(Node); if (Node->getValueType(0) == MVT::f64 && CN->isExactlyValue(+0.0)) { + if (Subtarget.hasMips64()) { + SDValue Zero = CurDAG->getCopyFromReg(CurDAG->getEntryNode(), dl, + Mips::ZERO_64, MVT::i64); + return CurDAG->getMachineNode(Mips::DMTC1, dl, MVT::f64, Zero); + } + SDValue Zero = CurDAG->getCopyFromReg(CurDAG->getEntryNode(), dl, Mips::ZERO, MVT::i32); return CurDAG->getMachineNode(Mips::BuildPairF64, dl, MVT::f64, Zero, diff --git a/test/CodeGen/Mips/mips64fpimm0.ll b/test/CodeGen/Mips/mips64fpimm0.ll new file mode 100644 index 0000000..17716da --- /dev/null +++ b/test/CodeGen/Mips/mips64fpimm0.ll @@ -0,0 +1,7 @@ +; RUN: llc < %s -march=mips64el -mcpu=mips64 -mattr=n64 | FileCheck %s + +define double @foo1() nounwind readnone { +entry: +; CHECK: dmtc1 $zero + ret double 0.000000e+00 +} |