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| author | Andrew Lenharth <andrewl@lenharth.org> | 2005-11-20 21:32:07 +0000 |
|---|---|---|
| committer | Andrew Lenharth <andrewl@lenharth.org> | 2005-11-20 21:32:07 +0000 |
| commit | f70e30b41dc6a92733681dcea2c06d8b3dd488db (patch) | |
| tree | 32729af5b378897971cc80a624db8cf33b83c9cb /lib/CodeGen/SelectionDAG | |
| parent | 6bf234c4a894b898954f8be3fb5973caba241012 (diff) | |
The first patch of X86 support for read cycle counter
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24429 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 31b0e0815d..429abf3be2 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -1168,6 +1168,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { if (Tmp1 != Node->getOperand(0)) Result = DAG.getNode(ISD::READCYCLECOUNTER, MVT::i64, Tmp1); break; + case ISD::TRUNCSTORE: Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. @@ -3336,6 +3337,17 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ Hi = DAG.getConstant(0, NVT); break; } + + case ISD::READCYCLECOUNTER: + if (TLI.getOperationAction(ISD::READCYCLECOUNTER, VT) == TargetLowering::Custom) { + SDOperand Chain = LegalizeOp(Node->getOperand(0)); + AddLegalizedOperand(SDOperand(Node, 1), Chain); + SDOperand t = TLI.LowerOperation(Op, DAG); + ExpandOp(t, Lo, Hi); + } else + assert(0 && "Must custom expand ReadCycleCounter"); + break; + // These operators cannot be expanded directly, emit them as calls to // library functions. case ISD::FP_TO_SINT: |