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Merge a number of cbackend changes from the LLVM dev tree.

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This fixes a number of failing tests with LLVM 3.1svn when
using the generic targets.

Issue #175.
This commit is contained in:
Matt Pharr
2012-02-13 16:52:38 -08:00
parent cc86e4a7d2
commit f4adbbf90c
1 changed files with 106 additions and 62 deletions
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168
cbackend.cpp
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@@ -364,7 +364,7 @@ namespace {
void printConstantArray(ConstantArray *CPA, bool Static);
void printConstantVector(ConstantVector *CV, bool Static);
#ifdef LLVM_3_1svn
void printConstantDataVector(ConstantDataVector *CV, bool Static);
void printConstantDataSequential(ConstantDataSequential *CDS, bool Static);
#endif
/// isAddressExposed - Return true if the specified value's name needs to
@@ -801,19 +801,13 @@ raw_ostream &CWriter::printType(raw_ostream &Out, Type *Ty,
default:
llvm_unreachable("Unhandled case in getTypeProps!");
}
return Out;
}
void CWriter::printConstantArray(ConstantArray *CPA, bool Static) {
// As a special case, print the array as a string if it is an array of
// ubytes or an array of sbytes with positive values.
//
#ifndef LLVM_3_1svn
Type *ETy = CPA->getType()->getElementType();
// MMP: this looks like a bug: both sides of the || are the same
bool isString = (ETy == Type::getInt8Ty(CPA->getContext()) ||
ETy == Type::getInt8Ty(CPA->getContext()));
bool isString = ETy == Type::getInt8Ty(CPA->getContext());
// Make sure the last character is a null char, as automatically added by C
if (isString && (CPA->getNumOperands() == 0 ||
@@ -821,7 +815,7 @@ void CWriter::printConstantArray(ConstantArray *CPA, bool Static) {
isString = false;
if (isString) {
Out << '\"';
Out << "\"";
// Keep track of whether the last number was a hexadecimal escape.
bool LastWasHex = false;
@@ -844,62 +838,100 @@ void CWriter::printConstantArray(ConstantArray *CPA, bool Static) {
} else {
LastWasHex = false;
switch (C) {
case '\n': Out << "\\n"; break;
case '\t': Out << "\\t"; break;
case '\r': Out << "\\r"; break;
case '\v': Out << "\\v"; break;
case '\a': Out << "\\a"; break;
case '\"': Out << "\\\""; break;
case '\'': Out << "\\\'"; break;
default:
Out << "\\x";
Out << (char)(( C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'));
Out << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
LastWasHex = true;
break;
case '\n': Out << "\\n"; break;
case '\t': Out << "\\t"; break;
case '\r': Out << "\\r"; break;
case '\v': Out << "\\v"; break;
case '\a': Out << "\\a"; break;
case '\"': Out << "\\\""; break;
case '\'': Out << "\\\'"; break;
default:
Out << "\\x";
Out << (char)(( C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'));
Out << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
LastWasHex = true;
break;
}
}
}
Out << "\"";
return;
}
#endif // !LLVM_3_1
printConstant(cast<Constant>(CPA->getOperand(0)), Static);
for (unsigned i = 1, e = CPA->getNumOperands(); i != e; ++i) {
Out << ", ";
printConstant(cast<Constant>(CPA->getOperand(i)), Static);
}
}
void CWriter::printConstantVector(ConstantVector *CP, bool Static) {
printConstant(cast<Constant>(CP->getOperand(0)), Static);
for (unsigned i = 1, e = CP->getNumOperands(); i != e; ++i) {
Out << ", ";
printConstant(cast<Constant>(CP->getOperand(i)), Static);
}
}
#ifdef LLVM_3_1svn
void CWriter::printConstantDataSequential(ConstantDataSequential *CDS,
bool Static) {
// As a special case, print the array as a string if it is an array of
// ubytes or an array of sbytes with positive values.
//
if (CDS->isCString()) {
Out << '\"';
// Keep track of whether the last number was a hexadecimal escape.
bool LastWasHex = false;
StringRef Bytes = CDS->getAsCString();
// Do not include the last character, which we know is null
for (unsigned i = 0, e = Bytes.size(); i != e; ++i) {
unsigned char C = Bytes[i];
// Print it out literally if it is a printable character. The only thing
// to be careful about is when the last letter output was a hex escape
// code, in which case we have to be careful not to print out hex digits
// explicitly (the C compiler thinks it is a continuation of the previous
// character, sheesh...)
//
if (isprint(C) && (!LastWasHex || !isxdigit(C))) {
LastWasHex = false;
if (C == '"' || C == '\\')
Out << "\\" << (char)C;
else
Out << (char)C;
} else {
LastWasHex = false;
switch (C) {
case '\n': Out << "\\n"; break;
case '\t': Out << "\\t"; break;
case '\r': Out << "\\r"; break;
case '\v': Out << "\\v"; break;
case '\a': Out << "\\a"; break;
case '\"': Out << "\\\""; break;
case '\'': Out << "\\\'"; break;
default:
Out << "\\x";
Out << (char)(( C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'));
Out << (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
LastWasHex = true;
break;
}
}
}
Out << '\"';
} else {
if (Static)
Out << '{';
if (CPA->getNumOperands()) {
Out << ' ';
printConstant(cast<Constant>(CPA->getOperand(0)), Static);
for (unsigned i = 1, e = CPA->getNumOperands(); i != e; ++i) {
Out << ", ";
printConstant(cast<Constant>(CPA->getOperand(i)), Static);
}
}
if (Static)
Out << " }";
}
}
void CWriter::printConstantVector(ConstantVector *CP, bool Static) {
if (CP->getNumOperands()) {
Out << ' ';
printConstant(cast<Constant>(CP->getOperand(0)), Static);
for (unsigned i = 1, e = CP->getNumOperands(); i != e; ++i) {
printConstant(CDS->getElementAsConstant(0), Static);
for (unsigned i = 1, e = CDS->getNumElements(); i != e; ++i) {
Out << ", ";
printConstant(cast<Constant>(CP->getOperand(i)), Static);
printConstant(CDS->getElementAsConstant(i), Static);
}
}
}
#ifdef LLVM_3_1svn
void CWriter::printConstantDataVector(ConstantDataVector *CP, bool Static) {
if (CP->getNumElements()) {
Out << ' ';
printConstant(cast<Constant>(CP->getElementAsConstant(0)), Static);
for (unsigned i = 1, e = CP->getNumElements(); i != e; ++i) {
Out << ", ";
printConstant(cast<Constant>(CP->getElementAsConstant(i)), Static);
}
}
}
#endif // LLVM_3_1svn
#endif // LLVM_3_1svn
// isFPCSafeToPrint - Returns true if we may assume that CFP may be written out
// textually as a double (rather than as a reference to a stack-allocated
@@ -1368,6 +1400,11 @@ void CWriter::printConstant(Constant *CPV, bool Static) {
}
if (ConstantArray *CA = dyn_cast<ConstantArray>(CPV)) {
printConstantArray(CA, Static);
#ifdef LLVM_3_1svn
} else if (ConstantDataSequential *CDS =
dyn_cast<ConstantDataSequential>(CPV)) {
printConstantDataSequential(CDS, Static);
#endif // LLVM_3_1svn
} else {
assert(isa<ConstantAggregateZero>(CPV) || isa<UndefValue>(CPV));
if (AT->getNumElements()) {
@@ -1392,13 +1429,12 @@ void CWriter::printConstant(Constant *CPV, bool Static) {
if (ConstantVector *CV = dyn_cast<ConstantVector>(CPV)) {
printConstantVector(CV, Static);
}
#ifdef LLVM_3_1svn
else if (ConstantDataVector *CDV = dyn_cast<ConstantDataVector>(CPV)) {
printConstantDataVector(CDV, Static);
}
} else if (ConstantDataSequential *CDS =
dyn_cast<ConstantDataSequential>(CPV)) {
printConstantDataSequential(CDS, Static);
#endif
else {
} else {
assert(isa<ConstantAggregateZero>(CPV) || isa<UndefValue>(CPV));
VectorType *VT = cast<VectorType>(CPV->getType());
Constant *CZ = Constant::getNullValue(VT->getElementType());
@@ -2789,9 +2825,17 @@ void CWriter::visitSwitchInst(SwitchInst &SI) {
unsigned NumCases = SI.getNumCases();
// Skip the first item since that's the default case.
#ifdef LLVM_3_1svn
for (unsigned i = 0; i < NumCases; ++i) {
#else
for (unsigned i = 1; i < NumCases; ++i) {
#endif // LLVM_3_1svn
ConstantInt* CaseVal = SI.getCaseValue(i);
#ifdef LLVM_3_1svn
BasicBlock* Succ = SI.getCaseSuccessor(i);
#else
BasicBlock* Succ = SI.getSuccessor(i);
#endif // LLVM_3_1svn
Out << " case ";
writeOperand(CaseVal);
Out << ":\n";