[llvm-commits] [llvm] r42994 - in /llvm/trunk: include/llvm/CodeGen/SelectionDAG.h lib/CodeGen/SelectionDAG/SelectionDAG.cpp

[Chris Lattner]

Author: lattner
Date: Mon Oct 15 12:47:20 2007
New Revision: 42994

URL: http://llvm.org/viewvc/llvm-project?rev=42994&view=rev
Log:
add a new CreateStackTemporary helper method.

Modified:
    llvm/trunk/include/llvm/CodeGen/SelectionDAG.h
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

Modified: llvm/trunk/include/llvm/CodeGen/SelectionDAG.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/SelectionDAG.h?rev=42994&r1=42993&r2=42994&view=diff

==============================================================================
--- llvm/trunk/include/llvm/CodeGen/SelectionDAG.h (original)
+++ llvm/trunk/include/llvm/CodeGen/SelectionDAG.h Mon Oct 15 12:47:20 2007
@@ -492,6 +492,10 @@
 
   void dump() const;
 
+  /// CreateStackTemporary - Create a stack temporary, suitable for holding the
+  /// specified value type.
+  SDOperand CreateStackTemporary(MVT::ValueType VT);
+  
   /// FoldSetCC - Constant fold a setcc to true or false.
   SDOperand FoldSetCC(MVT::ValueType VT, SDOperand N1,
                       SDOperand N2, ISD::CondCode Cond);

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=42994&r1=42993&r2=42994&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Mon Oct 15 12:47:20 2007
@@ -19,6 +19,7 @@
 #include "llvm/Assembly/Writer.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Target/MRegisterInfo.h"
 #include "llvm/Target/TargetData.h"
@@ -913,6 +914,18 @@
   return SDOperand(N, 0);
 }
 
+/// CreateStackTemporary - Create a stack temporary, suitable for holding the
+/// specified value type.
+SDOperand SelectionDAG::CreateStackTemporary(MVT::ValueType VT) {
+  MachineFrameInfo *FrameInfo = getMachineFunction().getFrameInfo();
+  unsigned ByteSize = MVT::getSizeInBits(VT)/8;
+  const Type *Ty = MVT::getTypeForValueType(VT);
+  unsigned StackAlign = (unsigned)TLI.getTargetData()->getPrefTypeAlignment(Ty);
+  int FrameIdx = FrameInfo->CreateStackObject(ByteSize, StackAlign);
+  return getFrameIndex(FrameIdx, TLI.getPointerTy());
+}
+
+
 SDOperand SelectionDAG::FoldSetCC(MVT::ValueType VT, SDOperand N1,
                                   SDOperand N2, ISD::CondCode Cond) {
   // These setcc operations always fold.