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| 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 | a4a972e32de0467051318b7b86518ee309aac1cf (patch) | |
| tree | ebb2a115d462154bec126d8e36114e713b2c0b91 | |
| parent | aa29fb4be86b5077ba9b5a27849ea37986369a2f (diff) | |
| download | bcm5719-llvm-a4a972e32de0467051318b7b86518ee309aac1cf.tar.gz bcm5719-llvm-a4a972e32de0467051318b7b86518ee309aac1cf.zip | |
Another expansion for i64 multiply, suitable for PPC.
llvm-svn: 43314
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 5998bc03f4e..23d132bb09e 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/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. |
