Add an option `-enable-old-style-attr-syntax' to print out function attributes in the "old" style.

It's sometimes beneficial to emit a testcase with the old style attribute
syntax. Allow someone to do this.
<rdar://problem/13563209>

llvm-svn: 179735
This commit is contained in:
Bill Wendling 2013-04-17 23:35:59 +00:00
parent 5841ceeb4b
commit 503365830b
4 changed files with 35 additions and 28 deletions

View File

@ -306,7 +306,8 @@ public:
unsigned getStackAlignment(unsigned Index) const;
/// \brief Return the attributes at the index as a string.
std::string getAsString(unsigned Index, bool InAttrGrp = false) const;
std::string getAsString(unsigned Index, bool TargetIndependent = false,
bool InAttrGrp = false) const;
typedef ArrayRef<Attribute>::iterator iterator;

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@ -33,6 +33,7 @@
#include "llvm/IR/TypeFinder.h"
#include "llvm/IR/ValueSymbolTable.h"
#include "llvm/Support/CFG.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/ErrorHandling.h"
@ -42,6 +43,12 @@
#include <cctype>
using namespace llvm;
static cl::opt<bool>
OldStyleAttrSyntax("enable-old-style-attr-syntax",
cl::desc("Output attributes on functions rather than in attribute groups"),
cl::Hidden,
cl::init(false));
// Make virtual table appear in this compilation unit.
AssemblyAnnotationWriter::~AssemblyAnnotationWriter() {}
@ -1378,7 +1385,7 @@ void AssemblyWriter::printModule(const Module *M) {
printFunction(I);
// Output all attribute groups.
if (!Machine.as_empty()) {
if (!OldStyleAttrSyntax && !Machine.as_empty()) {
Out << '\n';
writeAllAttributeGroups();
}
@ -1606,24 +1613,9 @@ void AssemblyWriter::printFunction(const Function *F) {
Out << "; Materializable\n";
const AttributeSet &Attrs = F->getAttributes();
if (Attrs.hasAttributes(AttributeSet::FunctionIndex)) {
if (!OldStyleAttrSyntax && Attrs.hasAttributes(AttributeSet::FunctionIndex)) {
AttributeSet AS = Attrs.getFnAttributes();
std::string AttrStr;
unsigned Idx = 0;
for (unsigned E = AS.getNumSlots(); Idx != E; ++Idx)
if (AS.getSlotIndex(Idx) == AttributeSet::FunctionIndex)
break;
for (AttributeSet::iterator I = AS.begin(Idx), E = AS.end(Idx);
I != E; ++I) {
Attribute Attr = *I;
if (!Attr.isStringAttribute()) {
if (!AttrStr.empty()) AttrStr += ' ';
AttrStr += Attr.getAsString();
}
}
std::string AttrStr = AS.getAsString(AttributeSet::FunctionIndex, true);
if (!AttrStr.empty())
Out << "; Function Attrs: " << AttrStr << '\n';
}
@ -1685,8 +1677,15 @@ void AssemblyWriter::printFunction(const Function *F) {
Out << ')';
if (F->hasUnnamedAddr())
Out << " unnamed_addr";
if (!OldStyleAttrSyntax) {
if (Attrs.hasAttributes(AttributeSet::FunctionIndex))
Out << " #" << Machine.getAttributeGroupSlot(Attrs.getFnAttributes());
} else {
AttributeSet AS = Attrs.getFnAttributes();
std::string AttrStr = AS.getAsString(AttributeSet::FunctionIndex, true);
if (!AttrStr.empty())
Out << ' ' << AttrStr;
}
if (F->hasSection()) {
Out << " section \"";
PrintEscapedString(F->getSection(), Out);
@ -2157,7 +2156,8 @@ void AssemblyWriter::writeAllAttributeGroups() {
for (std::vector<std::pair<AttributeSet, unsigned> >::iterator
I = asVec.begin(), E = asVec.end(); I != E; ++I)
Out << "attributes #" << I->second << " = { "
<< I->first.getAsString(AttributeSet::FunctionIndex, true) << " }\n";
<< I->first.getAsString(AttributeSet::FunctionIndex, false, true)
<< " }\n";
}
//===----------------------------------------------------------------------===//

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@ -178,7 +178,7 @@ public:
unsigned getAlignment() const;
unsigned getStackAlignment() const;
std::string getAsString(bool InAttrGrp) const;
std::string getAsString(bool TargetIndependent, bool InAttrGrp) const;
typedef SmallVectorImpl<Attribute>::iterator iterator;
typedef SmallVectorImpl<Attribute>::const_iterator const_iterator;

View File

@ -480,12 +480,17 @@ unsigned AttributeSetNode::getStackAlignment() const {
return 0;
}
std::string AttributeSetNode::getAsString(bool InAttrGrp) const {
std::string AttributeSetNode::getAsString(bool TargetIndependent,
bool InAttrGrp) const {
std::string Str = "";
for (SmallVectorImpl<Attribute>::const_iterator I = AttrList.begin(),
E = AttrList.end(); I != E; ) {
if (!TargetIndependent || !I->isStringAttribute()) {
Str += I->getAsString(InAttrGrp);
if (++I != E) Str += " ";
} else {
++I;
}
}
return Str;
}
@ -841,10 +846,11 @@ unsigned AttributeSet::getStackAlignment(unsigned Index) const {
return ASN ? ASN->getStackAlignment() : 0;
}
std::string AttributeSet::getAsString(unsigned Index,
std::string AttributeSet::getAsString(unsigned Index, bool TargetIndependent,
bool InAttrGrp) const {
AttributeSetNode *ASN = getAttributes(Index);
return ASN ? ASN->getAsString(InAttrGrp) : std::string("");
return ASN ? ASN->getAsString(TargetIndependent, InAttrGrp) :
std::string("");
}
/// \brief The attributes for the specified index are returned.