[llvm-commits] CVS: llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp

[Chris Lattner]

Changes in directory llvm/lib/Target/SparcV8:

SparcV8ISelDAGToDAG.cpp updated: 1.50 -> 1.51
---
Log message:

Implement DYNAMIC_STACKALLOC for V8


---
Diffs of the changes:  (+18 -1)

 SparcV8ISelDAGToDAG.cpp |   19 ++++++++++++++++++-
 1 files changed, 18 insertions(+), 1 deletion(-)


Index: llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp
diff -u llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp:1.50 llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp:1.51
--- llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp:1.50	Fri Jan 13 21:14:10 2006
+++ llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp	Sun Jan 15 02:43:57 2006
@@ -136,6 +136,8 @@
   setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
   setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
   
+  setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Custom);
+  
   // V8 has no intrinsics for these particular operations.
   setOperationAction(ISD::MEMMOVE, MVT::Other, Expand);
   setOperationAction(ISD::MEMSET, MVT::Other, Expand);
@@ -699,7 +701,22 @@
     return DAG.getNode(Opc, TrueVal.getValueType(), TrueVal, FalseVal, 
                        DAG.getConstant(CC, MVT::i32), CompareFlag);
   }
-  }  
+  case ISD::DYNAMIC_STACKALLOC: {
+    SDOperand Chain = Op.getOperand(0);
+    SDOperand Size  = Op.getOperand(1);
+
+    SDOperand SP = DAG.getCopyFromReg(Chain, V8::O6, MVT::i32);
+    Chain = SP.getValue(1);
+    SDOperand Res = DAG.getNode(ISD::SUB, MVT::i32, SP, Size);
+    Chain = DAG.getCopyToReg(Chain, V8::O6, Res);
+
+    std::vector<MVT::ValueType> VTs(Op.Val->value_begin(), Op.Val->value_end());
+    std::vector<SDOperand> Ops;
+    Ops.push_back(Res);
+    Ops.push_back(Chain);
+    return DAG.getNode(ISD::MERGE_VALUES, VTs, Ops);
+  }
+  }
 }
 
 MachineBasicBlock *