Add NumFixedArgs attribute to CallSDNode which indicates the number of fixed arguments in a vararg call.
With the SVR4 ABI on PowerPC, vector arguments for vararg calls are passed differently depending on whether they are a fixed or a variable argument. Variable vector arguments always go into memory, fixed vector arguments are put
into vector registers. If there are no free vector registers available, fixed vector arguments are put on the stack.
The NumFixedArgs attribute allows to decide for an argument in a vararg call whether it belongs to the fixed or variable portion of the parameter list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74764 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 0342f67..c8f4b52 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3375,7 +3375,7 @@
// FIXME: pass in DebugLoc
std::pair<SDValue,SDValue> CallResult =
TLI.LowerCallTo(Chain, Type::VoidTy,
- false, false, false, false, CallingConv::C, false,
+ false, false, false, false, 0, CallingConv::C, false,
getExternalSymbol("memcpy", TLI.getPointerTy()),
Args, *this, dl);
return CallResult.second;
@@ -3421,7 +3421,7 @@
// FIXME: pass in DebugLoc
std::pair<SDValue,SDValue> CallResult =
TLI.LowerCallTo(Chain, Type::VoidTy,
- false, false, false, false, CallingConv::C, false,
+ false, false, false, false, 0, CallingConv::C, false,
getExternalSymbol("memmove", TLI.getPointerTy()),
Args, *this, dl);
return CallResult.second;
@@ -3473,7 +3473,7 @@
// FIXME: pass in DebugLoc
std::pair<SDValue,SDValue> CallResult =
TLI.LowerCallTo(Chain, Type::VoidTy,
- false, false, false, false, CallingConv::C, false,
+ false, false, false, false, 0, CallingConv::C, false,
getExternalSymbol("memset", TLI.getPointerTy()),
Args, *this, dl);
return CallResult.second;
@@ -3605,7 +3605,8 @@
SDValue
SelectionDAG::getCall(unsigned CallingConv, DebugLoc dl, bool IsVarArgs,
bool IsTailCall, bool IsInreg, SDVTList VTs,
- const SDValue *Operands, unsigned NumOperands) {
+ const SDValue *Operands, unsigned NumOperands,
+ unsigned NumFixedArgs) {
// Do not include isTailCall in the folding set profile.
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::CALL, VTs, Operands, NumOperands);
@@ -3621,7 +3622,7 @@
}
SDNode *N = NodeAllocator.Allocate<CallSDNode>();
new (N) CallSDNode(CallingConv, dl, IsVarArgs, IsTailCall, IsInreg,
- VTs, Operands, NumOperands);
+ VTs, Operands, NumOperands, NumFixedArgs);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);