6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-25 13:24:46 +00:00
Code Issues Projects Releases Wiki Activity

Add support for undef and unreachable

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17051 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-10-16 18:14:10 +00:00
parent 289a49ab7d
commit 5a083b81c4
3 changed files with 29 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
lib/Target/SparcV9/SparcV9AsmPrinter.cpp
View File

@@ -315,7 +315,7 @@ void AsmPrinter::printSingleConstantValue(const Constant* CV) {
if (const GlobalValue* GV = dyn_cast<GlobalValue>(CV)) {
O << getID(GV) << "\n";
} else if (isa<ConstantPointerNull>(CV)) {
} else if (isa<ConstantPointerNull>(CV) || isa<UndefValue>(CV)) {
// Null pointer value
O << "0\n";
} else if (const ConstantExpr* CE = dyn_cast<ConstantExpr>(CV)) {
@@ -482,7 +482,7 @@ std::string AsmPrinter::valToExprString(const Value* V,
S += utostr(CI->getValue());
else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV))
S += ftostr(CFP->getValue());
else if (isa<ConstantPointerNull>(CV))
else if (isa<ConstantPointerNull>(CV) || isa<UndefValue>(CV))
S += "0";
else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV))
S += ConstantExprToString(CE, target);
@@ -750,7 +750,9 @@ void SparcV9AsmPrinter::printGlobalVariable(const GlobalVariable* GV) {
if (GV->hasExternalLinkage())
O << "\t.global\t" << getID(GV) << "\n";
if (GV->hasInitializer() && ! GV->getInitializer()->isNullValue()) {
if (GV->hasInitializer() &&
!(GV->getInitializer()->isNullValue() ||
isa<UndefValue>(GV->getInitializer()))) {
printConstant(GV->getInitializer(), getID(GV));
} else {
O << "\t.align\t" << TypeToAlignment(GV->getType()->getElementType(),
@@ -769,7 +771,8 @@ void SparcV9AsmPrinter::emitGlobals(const Module &M) {
assert(GI->hasInitializer());
if (GI->isConstant())
enterSection(ReadOnlyData); // read-only, initialized data
else if (GI->getInitializer()->isNullValue())
else if (GI->getInitializer()->isNullValue() ||
isa<UndefValue>(GI->getInitializer()))
enterSection(ZeroInitRWData); // read-write zero data
else
enterSection(InitRWData); // read-write non-zero data