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Minor refactoring of CC Lowering interfaces

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34656 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-02-27 05:13:54 +00:00
parent 362e98a5f5
commit 13513b7a50
3 changed files with 107 additions and 78 deletions
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46
lib/Target/X86/X86ISelLowering.cpp
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@@ -429,6 +429,7 @@ X86TargetLowering::X86TargetLowering(TargetMachine &TM)
// Return Value Calling Convention Implementation
//===----------------------------------------------------------------------===//
/// GetRetValueLocs - If we are returning a set of values with the specified
/// value types, determine the set of registers each one will land in. This
/// sets one element of the ResultRegs array for each element in the VTs array.
@@ -1060,11 +1061,11 @@ SDOperand X86TargetLowering::LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG,
//===----------------------------------------------------------------------===//
/// X86_64_CCC_AssignArgument - Implement the X86-64 C Calling Convention.
static void X86_64_CCC_AssignArgument(unsigned ValNo,
/// X86_64_CCC_AssignArgument - Implement the X86-64 C Calling Convention. This
/// returns true if the value was not handled by this calling convention.
static bool X86_64_CCC_AssignArgument(unsigned ValNo,
MVT::ValueType ArgVT, unsigned ArgFlags,
CCState &State,
SmallVector<CCValAssign, 16> &Locs) {
CCState &State) {
MVT::ValueType LocVT = ArgVT;
CCValAssign::LocInfo LocInfo = CCValAssign::Full;
@@ -1082,8 +1083,8 @@ static void X86_64_CCC_AssignArgument(unsigned ValNo,
X86::EDI, X86::ESI, X86::EDX, X86::ECX, X86::R8D, X86::R9D
};
if (unsigned Reg = State.AllocateReg(GPR32ArgRegs, 6)) {
Locs.push_back(CCValAssign::getReg(ValNo, ArgVT, Reg, LocVT, LocInfo));
return;
State.addLoc(CCValAssign::getReg(ValNo, ArgVT, Reg, LocVT, LocInfo));
return false;
}
}
@@ -1094,8 +1095,8 @@ static void X86_64_CCC_AssignArgument(unsigned ValNo,
X86::RDI, X86::RSI, X86::RDX, X86::RCX, X86::R8, X86::R9
};
if (unsigned Reg = State.AllocateReg(GPR64ArgRegs, 6)) {
Locs.push_back(CCValAssign::getReg(ValNo, ArgVT, Reg, LocVT, LocInfo));
return;
State.addLoc(CCValAssign::getReg(ValNo, ArgVT, Reg, LocVT, LocInfo));
return false;
}
}
@@ -1107,8 +1108,8 @@ static void X86_64_CCC_AssignArgument(unsigned ValNo,
X86::XMM4, X86::XMM5, X86::XMM6, X86::XMM7
};
if (unsigned Reg = State.AllocateReg(XMMArgRegs, 8)) {
Locs.push_back(CCValAssign::getReg(ValNo, ArgVT, Reg, LocVT, LocInfo));
return;
State.addLoc(CCValAssign::getReg(ValNo, ArgVT, Reg, LocVT, LocInfo));
return false;
}
}
@@ -1117,17 +1118,17 @@ static void X86_64_CCC_AssignArgument(unsigned ValNo,
if (LocVT == MVT::i32 || LocVT == MVT::i64 ||
LocVT == MVT::f32 || LocVT == MVT::f64) {
unsigned Offset = State.AllocateStack(8, 8);
Locs.push_back(CCValAssign::getMem(ValNo, ArgVT, Offset, LocVT, LocInfo));
return;
State.addLoc(CCValAssign::getMem(ValNo, ArgVT, Offset, LocVT, LocInfo));
return false;
}
// Vectors get 16-byte stack slots that are 16-byte aligned.
if (MVT::isVector(LocVT)) {
unsigned Offset = State.AllocateStack(16, 16);
Locs.push_back(CCValAssign::getMem(ValNo, ArgVT, Offset, LocVT, LocInfo));
return;
State.addLoc(CCValAssign::getMem(ValNo, ArgVT, Offset, LocVT, LocInfo));
return false;
}
assert(0 && "Unknown argument type!");
return true;
}
@@ -1147,18 +1148,18 @@ X86TargetLowering::LowerX86_64CCCArguments(SDOperand Op, SelectionDAG &DAG) {
X86::XMM4, X86::XMM5, X86::XMM6, X86::XMM7
};
SmallVector<SDOperand, 8> ArgValues;
CCState CCInfo(*getTargetMachine().getRegisterInfo());
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(MF.getFunction()->getCallingConv(), getTargetMachine(),
ArgLocs);
for (unsigned i = 0; i != NumArgs; ++i) {
MVT::ValueType ArgVT = Op.getValue(i).getValueType();
unsigned ArgFlags = cast<ConstantSDNode>(Op.getOperand(3+i))->getValue();
X86_64_CCC_AssignArgument(i, ArgVT, ArgFlags, CCInfo, ArgLocs);
if (X86_64_CCC_AssignArgument(i, ArgVT, ArgFlags, CCInfo))
assert(0 && "Unhandled argument type!");
}
SmallVector<SDOperand, 8> ArgValues;
unsigned LastVal = ~0U;
for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
CCValAssign &VA = ArgLocs[i];
@@ -1280,13 +1281,14 @@ X86TargetLowering::LowerX86_64CCCCallTo(SDOperand Op, SelectionDAG &DAG,
SDOperand Callee = Op.getOperand(4);
unsigned NumOps = (Op.getNumOperands() - 5) / 2;
CCState CCInfo(*getTargetMachine().getRegisterInfo());
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CC, getTargetMachine(), ArgLocs);
for (unsigned i = 0; i != NumOps; ++i) {
MVT::ValueType ArgVT = Op.getOperand(5+2*i).getValueType();
unsigned ArgFlags =cast<ConstantSDNode>(Op.getOperand(5+2*i+1))->getValue();
X86_64_CCC_AssignArgument(i, ArgVT, ArgFlags, CCInfo, ArgLocs);
if (X86_64_CCC_AssignArgument(i, ArgVT, ArgFlags, CCInfo))
assert(0 && "Unhandled argument type!");
}
// Get a count of how many bytes are to be pushed on the stack.