#include "llvm/ADT/SmallVector.h"
#include "clang/Basic/LLVM.h"

namespace clang {

    void foo() {
        SmallVector<int, 5> v;
        v.push_back(5); // unresolved push_back
        v.size(); // unresolved size
    }

}

more unresolved:
namespace clang {

    class MyVector : public SmallVector<double, 10> {
    public:
        bool IsSmallImpl() {
            return SmallVector::isSmall();
        }
    };
    
    void foo() {
        SmallVector<int, 5> v;
        v.push_back(5); // unresolved push_back
        v.size(); // unresolved size
        
        MyVector mv;
        if (mv.empty() || mv.IsSmallImpl()) { // unresolved empty
            SmallVector<float*, 5> cache;
            for (SmallVectorImpl<float*>::iterator
                I = cache.begin(), E = cache.end(); I != E; ++I) { // unresolved begin and end
                delete *I;
            }
        }
    }
}

Integrated into 'main-silver', will be available in build *201308290001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)

Changeset: http://hg.netbeans.org/main-silver/rev/2ca32bf55ae6
User: Vladimir Voskresensky <vv159170@netbeans.org>
Log: fixing #235102 - 5% inaccuracy in LLVM
- search in used declarations, moved antiLoop check into UsingDeclarationImpl from Resolver3

Created attachment 144291 [details]
very draft patch to fix casts (22 failed unit tests, only works when all decls are in the same namespace)

Top issues:
TOTAL for LLVM34:
8027 errors    4575307 lines    3326 files    1.75 errors per 1K lines

Statistics by message
     267   3%  Unable to resolve identifier size - SmallVector.size
     266   3%  Unable to resolve identifier push_back
     211   2%  Unable to resolve identifier getZExtValue  - <cast>
     194   2%  Unable to resolve identifier getSVal - IntrusiveRefCntPtr->
     160   1%  Unable to resolve identifier get - IntrusiveRefCntPtr->
     133   1%  Unable to resolve identifier empty - StringRef.empty
     130   1%  Unable to resolve identifier Writer
     125   1%  Unable to resolve identifier getElementType - <cast>
     117   1%  Unable to resolve identifier begin - SmallVector<...>.begin
     113   1%  Unable to resolve identifier end - SmallVector<...>.end
      94   1%  Unable to resolve identifier back - SmallVector<...>.back

Then from <cast> about 3000 or remaining 6000 errors

Test case for unresolved methods from SmallVector.
============================================================
namespace A {
    struct AAA {
        int foo();
    };
    
}

namespace B {
    using namespace A;
}

namespace B {
    namespace C {
        AAA x;
        
        int function() {
            x.foo(); // foo is unresolved
        }
    }
}
=============================================================

Integrated into 'main-silver', will be available in build *201403120001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)

Changeset: http://hg.netbeans.org/main-silver/rev/114d890820e3
User: Petr Kudryavtsev <petrk@netbeans.org>
Log: Fixing for #235102 - 5% inaccuracy on LLVM
-- fixed some usings

Next test case:
=================================
namespace XXX {
    struct AAA {
        struct BBB;
        int foo();
    };
}

using namespace XXX; 

struct AAA::BBB {
    int foo();
};

int XXX::AAA::foo() {
    BBB b;
    b.foo();
}
=================================

Integrated into 'main-silver', will be available in build *201403150001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)

Changeset: http://hg.netbeans.org/main-silver/rev/98933b57abaa
User: Petr Kudryavtsev <petrk@netbeans.org>
Log: Fixing #235102 - 5% inaccuracy in LLVM

Integrated into 'releases/release80', will be available in build *201404240045* or newer. Wait for official and publicly available build.

Changeset: http://hg.netbeans.org/releases/rev/9a4995e92cd6
User: Petr Kudryavtsev <petrk@netbeans.org>
Log: Fixing for #235102 - 5% inaccuracy on LLVM
-- fixed some usings
(transplanted from 114d890820e3def911e7e18fc2cb14a276b592cc)

Integrated into 'main-silver', will be available in build *201407220001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)

Changeset: http://hg.netbeans.org/main-silver/rev/7143cc4d951d
User: Petr Kudryavtsev <petrk@netbeans.org>
Log: Additional fix for #235102 - 5% inaccuracy in LLVM

There is no goal of issue.
There is no work on issue more then year.
Close as fixed.

Last numbers is:
Number of analyzed contexts 2884774
Unresolved 10832 (0.38%) where MacroBased 7227 (0.25%) of 2884774 checkpoints [TemplateBased warnings 70 (0.00%), Builtin 81 (0.00%)]
Line count: 4634995, time 3248303 ms, 
speed 1426.90 lines/sec, 888.09 refs/sec