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Add support for emitting a string attribute.

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Attributes that are strings are typically target-dependent attributes. They are
of this form in the IR:

   "attr"
   "attr" = "val"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174090 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2013-01-31 20:59:05 +00:00
parent b62fb4ba5c
commit 14292a6be5
2 changed files with 77 additions and 45 deletions
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7
lib/IR/AttributeImpl.h
View File

@ -45,23 +45,24 @@ public:
ArrayRef<Constant*> values);
AttributeImpl(LLVMContext &C, StringRef data);
LLVMContext &getContext() { return Context; }
bool hasAttribute(Attribute::AttrKind A) const;
Constant *getAttributeKind() const { return Kind; }
ArrayRef<Constant*> getAttributeValues() const { return Vals; }
LLVMContext &getContext() { return Context; }
ArrayRef<Constant*> getValues() const { return Vals; }
uint64_t getAlignment() const;
uint64_t getStackAlignment() const;
/// \brief Equality and non-equality comparison operators.
bool operator==(Attribute::AttrKind Kind) const;
bool operator!=(Attribute::AttrKind Kind) const;
bool operator==(StringRef Kind) const;
bool operator!=(StringRef Kind) const;
/// \brief Used when sorting the attributes.
bool operator<(const AttributeImpl &AI) const;
void Profile(FoldingSetNodeID &ID) const {

115
lib/IR/Attributes.cpp
View File

@ -106,60 +106,70 @@ unsigned Attribute::getStackAlignment() const {
}
std::string Attribute::getAsString() const {
if (hasAttribute(Attribute::ZExt))
return "zeroext";
if (hasAttribute(Attribute::SExt))
return "signext";
if (hasAttribute(Attribute::NoReturn))
return "noreturn";
if (hasAttribute(Attribute::NoUnwind))
return "nounwind";
if (hasAttribute(Attribute::UWTable))
return "uwtable";
if (hasAttribute(Attribute::ReturnsTwice))
return "returns_twice";
if (!pImpl) return "";
if (hasAttribute(Attribute::AddressSafety))
return "address_safety";
if (hasAttribute(Attribute::AlwaysInline))
return "alwaysinline";
if (hasAttribute(Attribute::ByVal))
return "byval";
if (hasAttribute(Attribute::InlineHint))
return "inlinehint";
if (hasAttribute(Attribute::InReg))
return "inreg";
if (hasAttribute(Attribute::MinSize))
return "minsize";
if (hasAttribute(Attribute::Naked))
return "naked";
if (hasAttribute(Attribute::Nest))
return "nest";
if (hasAttribute(Attribute::NoAlias))
return "noalias";
if (hasAttribute(Attribute::NoCapture))
return "nocapture";
if (hasAttribute(Attribute::StructRet))
return "sret";
if (hasAttribute(Attribute::ByVal))
return "byval";
if (hasAttribute(Attribute::Nest))
return "nest";
if (hasAttribute(Attribute::NoDuplicate))
return "noduplicate";
if (hasAttribute(Attribute::NoImplicitFloat))
return "noimplicitfloat";
if (hasAttribute(Attribute::NoInline))
return "noinline";
if (hasAttribute(Attribute::NonLazyBind))
return "nonlazybind";
if (hasAttribute(Attribute::NoRedZone))
return "noredzone";
if (hasAttribute(Attribute::NoReturn))
return "noreturn";
if (hasAttribute(Attribute::NoUnwind))
return "nounwind";
if (hasAttribute(Attribute::OptimizeForSize))
return "optsize";
if (hasAttribute(Attribute::ReadNone))
return "readnone";
if (hasAttribute(Attribute::ReadOnly))
return "readonly";
if (hasAttribute(Attribute::OptimizeForSize))
return "optsize";
if (hasAttribute(Attribute::NoInline))
return "noinline";
if (hasAttribute(Attribute::InlineHint))
return "inlinehint";
if (hasAttribute(Attribute::AlwaysInline))
return "alwaysinline";
if (hasAttribute(Attribute::ReturnsTwice))
return "returns_twice";
if (hasAttribute(Attribute::SExt))
return "signext";
if (hasAttribute(Attribute::StackProtect))
return "ssp";
if (hasAttribute(Attribute::StackProtectReq))
return "sspreq";
if (hasAttribute(Attribute::StackProtectStrong))
return "sspstrong";
if (hasAttribute(Attribute::NoRedZone))
return "noredzone";
if (hasAttribute(Attribute::NoImplicitFloat))
return "noimplicitfloat";
if (hasAttribute(Attribute::Naked))
return "naked";
if (hasAttribute(Attribute::NonLazyBind))
return "nonlazybind";
if (hasAttribute(Attribute::AddressSafety))
return "address_safety";
if (hasAttribute(Attribute::MinSize))
return "minsize";
if (hasAttribute(Attribute::StructRet))
return "sret";
if (hasAttribute(Attribute::UWTable))
return "uwtable";
if (hasAttribute(Attribute::ZExt))
return "zeroext";
// FIXME: These should be output like this:
//
// align=4
// alignstack=8
//
if (hasAttribute(Attribute::StackAlignment)) {
std::string Result;
Result += "alignstack(";
@ -171,17 +181,38 @@ std::string Attribute::getAsString() const {
std::string Result;
Result += "align ";
Result += utostr(getAlignment());
Result += "";
return Result;
}
if (hasAttribute(Attribute::NoDuplicate))
return "noduplicate";
// Convert target-dependent attributes to strings of the form:
//
// "kind"
// "kind" = "value"
// "kind" = ("value1" "value2" "value3" )
//
if (ConstantDataArray *CDA =
dyn_cast<ConstantDataArray>(pImpl->getAttributeKind())) {
std::string Result;
Result += '\"' + CDA->getAsString().str() + '"';
ArrayRef<Constant*> Vals = pImpl->getAttributeValues();
if (Vals.empty()) return Result;
Result += " = ";
if (Vals.size() > 1) Result += '(';
for (ArrayRef<Constant*>::iterator I = Vals.begin(), E = Vals.end();
I != E; ) {
ConstantDataArray *CDA = cast<ConstantDataArray>(*I++);
Result += '\"' + CDA->getAsString().str() + '"';
if (I != E) Result += ' ';
}
if (Vals.size() > 1) Result += ')';
}
llvm_unreachable("Unknown attribute");
}
bool Attribute::operator==(AttrKind K) const {
return pImpl && *pImpl == K;
return (pImpl && *pImpl == K) || (!pImpl && K == None);
}
bool Attribute::operator!=(AttrKind K) const {
return !(*this == K);