[llvm] r180722 - Revert "revert r179735, it has no testcases, and doesn't really make sense."

David Dean david_dean at apple.com
Mon Apr 29 15:17:44 PDT 2013


Huge thanks here. This fixed something that I was having a hard time tracking down.

On 29 Apr 2013, at 11:23 AM, Reid Kleckner <reid at kleckner.net> wrote:

> Author: rnk
> Date: Mon Apr 29 13:23:53 2013
> New Revision: 180722
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=180722&view=rev
> Log:
> Revert "revert r179735, it has no testcases, and doesn't really make sense."
> 
> This un-reverts r179735 and reverts commit r180574.
> 
> This fixes assertion failures for me locally and should fix the failures
> on Windows reported widely on llvm-dev.  We should check if the bots
> caught this and if so why not.
> 
> Modified:
>    llvm/trunk/include/llvm/IR/Attributes.h
>    llvm/trunk/lib/IR/AsmWriter.cpp
>    llvm/trunk/lib/IR/AttributeImpl.h
>    llvm/trunk/lib/IR/Attributes.cpp
> 
> Modified: llvm/trunk/include/llvm/IR/Attributes.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/Attributes.h?rev=180722&r1=180721&r2=180722&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/IR/Attributes.h (original)
> +++ llvm/trunk/include/llvm/IR/Attributes.h Mon Apr 29 13:23:53 2013
> @@ -307,7 +307,8 @@ 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 = true,
> +                          bool InAttrGrp = false) const;
> 
>   typedef ArrayRef<Attribute>::iterator iterator;
> 
> 
> Modified: llvm/trunk/lib/IR/AsmWriter.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/AsmWriter.cpp?rev=180722&r1=180721&r2=180722&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/AsmWriter.cpp (original)
> +++ llvm/trunk/lib/IR/AsmWriter.cpp Mon Apr 29 13:23:53 2013
> @@ -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 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
>     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, false);
>     if (!AttrStr.empty())
>       Out << "; Function Attrs: " << AttrStr << '\n';
>   }
> @@ -1685,8 +1677,15 @@ void AssemblyWriter::printFunction(const
>   Out << ')';
>   if (F->hasUnnamedAddr())
>     Out << " unnamed_addr";
> -  if (Attrs.hasAttributes(AttributeSet::FunctionIndex))
> -    Out << " #" << Machine.getAttributeGroupSlot(Attrs.getFnAttributes());
> +  if (!OldStyleAttrSyntax) {
> +    if (Attrs.hasAttributes(AttributeSet::FunctionIndex))
> +      Out << " #" << Machine.getAttributeGroupSlot(Attrs.getFnAttributes());
> +  } else {
> +    AttributeSet AS = Attrs.getFnAttributes();
> +    std::string AttrStr = AS.getAsString(AttributeSet::FunctionIndex, false);
> +    if (!AttrStr.empty())
> +      Out << ' ' << AttrStr;
> +  }
>   if (F->hasSection()) {
>     Out << " section \"";
>     PrintEscapedString(F->getSection(), Out);
> @@ -2157,7 +2156,8 @@ void AssemblyWriter::writeAllAttributeGr
>   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, true, true)
> +        << " }\n";
> }
> 
> //===----------------------------------------------------------------------===//
> 
> Modified: llvm/trunk/lib/IR/AttributeImpl.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/AttributeImpl.h?rev=180722&r1=180721&r2=180722&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/AttributeImpl.h (original)
> +++ llvm/trunk/lib/IR/AttributeImpl.h Mon Apr 29 13:23:53 2013
> @@ -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;
> 
> Modified: llvm/trunk/lib/IR/Attributes.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Attributes.cpp?rev=180722&r1=180721&r2=180722&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/Attributes.cpp (original)
> +++ llvm/trunk/lib/IR/Attributes.cpp Mon Apr 29 13:23:53 2013
> @@ -483,13 +483,16 @@ unsigned AttributeSetNode::getStackAlign
>   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; ++I) {
> -    if (I != AttrList.begin())
> -      Str += ' ';
> -    Str += I->getAsString(InAttrGrp);
> +    if (TargetIndependent || !I->isStringAttribute()) {
> +      if (I != AttrList.begin())
> +        Str += ' ';
> +      Str += I->getAsString(InAttrGrp);
> +    }
>   }
>   return Str;
> }
> @@ -845,10 +848,11 @@ unsigned AttributeSet::getStackAlignment
>   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.
> 
> 
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-David





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