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add methods for analysis of call results and return nodes.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34738 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-02-28 07:09:40 +00:00
parent 638402b253
commit 66baf26fe0
2 changed files with 53 additions and 15 deletions
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14
include/llvm/CodeGen/CallingConvLower.h
View File

@ -130,13 +130,21 @@ public:
return UsedRegs[Reg/32] & (1 << (Reg&31));
}
/// AnalyzeFormalArguments - Analyze an ISD::FORMAL_ARGUMENTS node,
/// incorporating info about the formals into this state.
void AnalyzeFormalArguments(SDNode *TheArgs, CCAssignFn Fn);
/// AnalyzeReturn - Analyze the returned values of an ISD::RET node,
/// incorporating info about the result values into this state.
void AnalyzeReturn(SDNode *TheRet, CCAssignFn Fn);
/// AnalyzeCallOperands - Analyze an ISD::CALL node, incorporating info
/// about the passed values into this state.
void AnalyzeCallOperands(SDNode *TheCall, CCAssignFn Fn);
/// AnalyzeFormalArguments - Analyze an ISD::FORMAL_ARGUMENTS node,
/// incorporating info about the formals into this state.
void AnalyzeFormalArguments(SDNode *TheArgs, CCAssignFn Fn);
/// AnalyzeCallResult - Analyze the return values of an ISD::CALL node,
/// incorporating info about the passed values into this state.
void AnalyzeCallResult(SDNode *TheCall, CCAssignFn Fn);
/// getFirstUnallocated - Return the first unallocated register in the set, or

54
lib/CodeGen/SelectionDAG/CallingConvLower.cpp
View File

@ -37,6 +37,39 @@ void CCState::MarkAllocated(unsigned Reg) {
UsedRegs[Reg/32] |= 1 << (Reg&31);
}
/// AnalyzeFormalArguments - Analyze an ISD::FORMAL_ARGUMENTS node,
/// incorporating info about the formals into this state.
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();
if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this)) {
cerr << "Formal argument #" << i << " has unhandled type "
<< MVT::getValueTypeString(ArgVT) << "\n";
abort();
}
}
}
/// AnalyzeReturn - Analyze the returned values of an ISD::RET node,
/// incorporating info about the result values into this state.
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)){
cerr << "Return operand #" << i << " has unhandled type "
<< MVT::getValueTypeString(VT) << "\n";
abort();
}
}
}
/// AnalyzeCallOperands - Analyze an ISD::CALL node, incorporating info
/// about the passed values into this state.
void CCState::AnalyzeCallOperands(SDNode *TheCall, CCAssignFn Fn) {
@ -53,19 +86,16 @@ void CCState::AnalyzeCallOperands(SDNode *TheCall, CCAssignFn Fn) {
}
}
/// AnalyzeFormalArguments - Analyze an ISD::FORMAL_ARGUMENTS node,
/// incorporating info about the formals into this state.
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();
if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this)) {
cerr << "Formal argument #" << i << " has unhandled type "
<< MVT::getValueTypeString(ArgVT) << "\n";
/// 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)) {
cerr << "Call result #" << i << " has unhandled type "
<< MVT::getValueTypeString(VT) << "\n";
abort();
}
}
}