diff options
| author | Dale Johannesen <dalej@apple.com> | 2007-10-24 22:26:08 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2007-10-24 22:26:08 +0000 |
| commit | 8eadd5a6db79da067c773d1bd1cc13edc07788cc (patch) | |
| tree | 55f8c9972a9218c11e11bfaf1374d523c5f3ce11 | |
| parent | 0bd5fcf49fafc94eede6d5a759316265ad2ba4dc (diff) | |
Another expansion for i64 multiply, suitable for PPC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43314 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 5998bc03f4..23d132bb09 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -5930,6 +5930,15 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); break; } + if (HasMULHU) { + Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); + Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); + RH = DAG.getNode(ISD::MUL, NVT, LL, RH); + LH = DAG.getNode(ISD::MUL, NVT, LH, RL); + Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); + Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); + break; + } } // If nothing else, we can make a libcall. |