X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FSelectionDAG%2FCallingConvLower.cpp;h=c0077793d0e3cf844ac1741d3eb0af0b0980b7d5;hb=f9410141f703f4e8a6aba717617ef958249f6d13;hp=bcd132fb03e4169b6eaf3e5f10f1096090239670;hpb=594d37e21aea4ef841d9ee5d9c328c4bf1c6bed7;p=oota-llvm.git

diff --git a/lib/CodeGen/SelectionDAG/CallingConvLower.cpp b/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
index bcd132fb03e..c0077793d0e 100644
--- a/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
+++ b/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -13,28 +13,34 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/CallingConvLower.h"
-#include "llvm/CodeGen/SelectionDAGNodes.h"
-#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
 using namespace llvm;
 
 CCState::CCState(unsigned CC, bool isVarArg, const TargetMachine &tm,
                  SmallVector<CCValAssign, 16> &locs)
   : CallingConv(CC), IsVarArg(isVarArg), TM(tm),
-    MRI(*TM.getRegisterInfo()), Locs(locs) {
+    TRI(*TM.getRegisterInfo()), Locs(locs) {
   // No stack is used.
   StackOffset = 0;
   
-  UsedRegs.resize(MRI.getNumRegs());
+  UsedRegs.resize((TRI.getNumRegs()+31)/32);
 }
 
-void CCState::HandleStruct(unsigned ValNo, MVT::ValueType ValVT,
-                           MVT::ValueType LocVT, CCValAssign::LocInfo LocInfo,
-                           unsigned ArgFlags) {
-  unsigned Align  = 1 << ((ArgFlags & ISD::ParamFlags::ByValAlign) >>
-                          ISD::ParamFlags::ByValAlignOffs);
-  unsigned Size   = (ArgFlags & ISD::ParamFlags::ByValSize) >>
-      ISD::ParamFlags::ByValSizeOffs;
+// HandleByVal - Allocate a stack slot large enough to pass an argument by
+// value. The size and alignment information of the argument is encoded in its
+// parameter attribute.
+void CCState::HandleByVal(unsigned ValNo, MVT ValVT,
+                          MVT LocVT, CCValAssign::LocInfo LocInfo,
+                          int MinSize, int MinAlign,
+                          ISD::ArgFlagsTy ArgFlags) {
+  unsigned Align = ArgFlags.getByValAlign();
+  unsigned Size  = ArgFlags.getByValSize();
+  if (MinSize > (int)Size)
+    Size = MinSize;
+  if (MinAlign > (int)Align)
+    Align = MinAlign;
   unsigned Offset = AllocateStack(Size, Align);
 
   addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
@@ -44,7 +50,7 @@ void CCState::HandleStruct(unsigned ValNo, MVT::ValueType ValVT,
 void CCState::MarkAllocated(unsigned Reg) {
   UsedRegs[Reg/32] |= 1 << (Reg&31);
   
-  if (const unsigned *RegAliases = MRI.getAliasSet(Reg))
+  if (const unsigned *RegAliases = TRI.getAliasSet(Reg))
     for (; (Reg = *RegAliases); ++RegAliases)
       UsedRegs[Reg/32] |= 1 << (Reg&31);
 }
@@ -55,12 +61,12 @@ void CCState::AnalyzeFormalArguments(SDNode *TheArgs, CCAssignFn Fn) {
   unsigned NumArgs = TheArgs->getNumValues()-1;
   
   for (unsigned i = 0; i != NumArgs; ++i) {
-    MVT::ValueType ArgVT = TheArgs->getValueType(i);
-    SDOperand FlagOp = TheArgs->getOperand(3+i);
-    unsigned ArgFlags = cast<ConstantSDNode>(FlagOp)->getValue();
+    MVT ArgVT = TheArgs->getValueType(i);
+    ISD::ArgFlagsTy ArgFlags =
+      cast<ARG_FLAGSSDNode>(TheArgs->getOperand(3+i))->getArgFlags();
     if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this)) {
       cerr << "Formal argument #" << i << " has unhandled type "
-           << MVT::getValueTypeString(ArgVT) << "\n";
+           << ArgVT.getMVTString() << "\n";
       abort();
     }
   }
@@ -71,11 +77,12 @@ void CCState::AnalyzeFormalArguments(SDNode *TheArgs, CCAssignFn Fn) {
 void CCState::AnalyzeReturn(SDNode *TheRet, CCAssignFn Fn) {
   // Determine which register each value should be copied into.
   for (unsigned i = 0, e = TheRet->getNumOperands() / 2; i != e; ++i) {
-    MVT::ValueType VT = TheRet->getOperand(i*2+1).getValueType();
-    if (Fn(i, VT, VT, CCValAssign::Full,
-           cast<ConstantSDNode>(TheRet->getOperand(i*2+2))->getValue(), *this)){
+    MVT VT = TheRet->getOperand(i*2+1).getValueType();
+    ISD::ArgFlagsTy ArgFlags =
+      cast<ARG_FLAGSSDNode>(TheRet->getOperand(i*2+2))->getArgFlags();
+    if (Fn(i, VT, VT, CCValAssign::Full, ArgFlags, *this)){
       cerr << "Return operand #" << i << " has unhandled type "
-           << MVT::getValueTypeString(VT) << "\n";
+           << VT.getMVTString() << "\n";
       abort();
     }
   }
@@ -84,15 +91,31 @@ void CCState::AnalyzeReturn(SDNode *TheRet, CCAssignFn Fn) {
 
 /// AnalyzeCallOperands - Analyze an ISD::CALL node, incorporating info
 /// about the passed values into this state.
-void CCState::AnalyzeCallOperands(SDNode *TheCall, CCAssignFn Fn) {
-  unsigned NumOps = (TheCall->getNumOperands() - 5) / 2;
+void CCState::AnalyzeCallOperands(CallSDNode *TheCall, CCAssignFn Fn) {
+  unsigned NumOps = TheCall->getNumArgs();
   for (unsigned i = 0; i != NumOps; ++i) {
-    MVT::ValueType ArgVT = TheCall->getOperand(5+2*i).getValueType();
-    SDOperand FlagOp = TheCall->getOperand(5+2*i+1);
-    unsigned ArgFlags =cast<ConstantSDNode>(FlagOp)->getValue();
+    MVT ArgVT = TheCall->getArg(i).getValueType();
+    ISD::ArgFlagsTy ArgFlags = TheCall->getArgFlags(i);
     if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this)) {
       cerr << "Call operand #" << i << " has unhandled type "
-           << MVT::getValueTypeString(ArgVT) << "\n";
+           << ArgVT.getMVTString() << "\n";
+      abort();
+    }
+  }
+}
+
+/// AnalyzeCallOperands - Same as above except it takes vectors of types
+/// and argument flags.
+void CCState::AnalyzeCallOperands(SmallVectorImpl<MVT> &ArgVTs,
+                                  SmallVectorImpl<ISD::ArgFlagsTy> &Flags,
+                                  CCAssignFn Fn) {
+  unsigned NumOps = ArgVTs.size();
+  for (unsigned i = 0; i != NumOps; ++i) {
+    MVT ArgVT = ArgVTs[i];
+    ISD::ArgFlagsTy ArgFlags = Flags[i];
+    if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this)) {
+      cerr << "Call operand #" << i << " has unhandled type "
+           << ArgVT.getMVTString() << "\n";
       abort();
     }
   }
@@ -100,13 +123,26 @@ void CCState::AnalyzeCallOperands(SDNode *TheCall, CCAssignFn Fn) {
 
 /// AnalyzeCallResult - Analyze the return values of an ISD::CALL node,
 /// incorporating info about the passed values into this state.
-void CCState::AnalyzeCallResult(SDNode *TheCall, CCAssignFn Fn) {
-  for (unsigned i = 0, e = TheCall->getNumValues() - 1; i != e; ++i) {
-    MVT::ValueType VT = TheCall->getValueType(i);
-    if (Fn(i, VT, VT, CCValAssign::Full, 0, *this)) {
+void CCState::AnalyzeCallResult(CallSDNode *TheCall, CCAssignFn Fn) {
+  for (unsigned i = 0, e = TheCall->getNumRetVals(); i != e; ++i) {
+    MVT VT = TheCall->getRetValType(i);
+    ISD::ArgFlagsTy Flags = ISD::ArgFlagsTy();
+    if (TheCall->isInreg())
+      Flags.setInReg();
+    if (Fn(i, VT, VT, CCValAssign::Full, Flags, *this)) {
       cerr << "Call result #" << i << " has unhandled type "
-           << MVT::getValueTypeString(VT) << "\n";
+           << VT.getMVTString() << "\n";
       abort();
     }
   }
 }
+
+/// AnalyzeCallResult - Same as above except it's specialized for calls which
+/// produce a single value.
+void CCState::AnalyzeCallResult(MVT VT, CCAssignFn Fn) {
+  if (Fn(0, VT, VT, CCValAssign::Full, ISD::ArgFlagsTy(), *this)) {
+    cerr << "Call result has unhandled type "
+         << VT.getMVTString() << "\n";
+    abort();
+  }
+}