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core changes for varargs

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22254 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth
2005-06-18 18:34:52 +00:00
parent f542821385
commit 558bc88a00
26 changed files with 501 additions and 280 deletions
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31
lib/Target/CBackend/CBackend.cpp
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@ -145,7 +145,7 @@ namespace {
// emit it inline where it would go.
if (I.getType() == Type::VoidTy || !I.hasOneUse() ||
isa<TerminatorInst>(I) || isa<CallInst>(I) || isa<PHINode>(I) ||
isa<LoadInst>(I) || isa<VAArgInst>(I) || isa<VANextInst>(I))
isa<LoadInst>(I) || isa<VAArgInst>(I))
// Don't inline a load across a store or other bad things!
return false;
@ -196,7 +196,6 @@ namespace {
void visitLoadInst (LoadInst &I);
void visitStoreInst (StoreInst &I);
void visitGetElementPtrInst(GetElementPtrInst &I);
void visitVANextInst(VANextInst &I);
void visitVAArgInst (VAArgInst &I);
void visitInstruction(Instruction &I) {
@ -1469,7 +1468,10 @@ void CWriter::visitCallInst(CallInst &I) {
case Intrinsic::vastart:
Out << "0; ";
Out << "va_start(*(va_list*)&" << Mang->getValueName(&I) << ", ";
// Out << "va_start(*(va_list*)&" << Mang->getValueName(&I) << ", ";
Out << "va_start(*(va_list*)";
writeOperand(I.getOperand(1));
Out << ", ";
// Output the last argument to the enclosing function...
if (I.getParent()->getParent()->arg_empty()) {
std::cerr << "The C backend does not currently support zero "
@ -1482,7 +1484,7 @@ void CWriter::visitCallInst(CallInst &I) {
return;
case Intrinsic::vaend:
if (!isa<ConstantPointerNull>(I.getOperand(1))) {
Out << "va_end(*(va_list*)&";
Out << "0; va_end(*(va_list*)";
writeOperand(I.getOperand(1));
Out << ')';
} else {
@ -1490,10 +1492,11 @@ void CWriter::visitCallInst(CallInst &I) {
}
return;
case Intrinsic::vacopy:
Out << "0;";
Out << "va_copy(*(va_list*)&" << Mang->getValueName(&I) << ", ";
Out << "*(va_list*)&";
Out << "0; ";
Out << "va_copy(*(va_list*)";
writeOperand(I.getOperand(1));
Out << ", *(va_list*)&";
writeOperand(I.getOperand(2));
Out << ')';
return;
case Intrinsic::returnaddress:
@ -1710,20 +1713,12 @@ void CWriter::visitGetElementPtrInst(GetElementPtrInst &I) {
gep_type_end(I));
}
void CWriter::visitVANextInst(VANextInst &I) {
Out << Mang->getValueName(I.getOperand(0));
Out << "; va_arg(*(va_list*)&" << Mang->getValueName(&I) << ", ";
printType(Out, I.getArgType());
Out << ')';
}
void CWriter::visitVAArgInst(VAArgInst &I) {
Out << "0;\n";
Out << "{ va_list Tmp; va_copy(Tmp, *(va_list*)&";
Out << "va_arg(*(va_list*)";
writeOperand(I.getOperand(0));
Out << ");\n " << Mang->getValueName(&I) << " = va_arg(Tmp, ";
Out << ", ";
printType(Out, I.getType());
Out << ");\n va_end(Tmp); }";
Out << ");\n ";
}
//===----------------------------------------------------------------------===//