linkage, so remove it.

llvm-svn: 66690

linkage: this linkage type only applies to declarations,
but ODR is only relevant to globals with definitions.

llvm-svn: 66650

and extern_weak_odr.  These are the same as the non-odr versions,
except that they indicate that the global will only be overridden
by an *equivalent* global.  In C, a function with weak linkage can
be overridden by a function which behaves completely differently.
This means that IP passes have to skip weak functions, since any
deductions made from the function definition might be wrong, since
the definition could be replaced by something completely different
at link time.   This is not allowed in C++, thanks to the ODR
(One-Definition-Rule): if a function is replaced by another at
link-time, then the new function must be the same as the original
function.  If a language knows that a function or other global can
only be overridden by an equivalent global, it can give it the
weak_odr linkage type, and the optimizers will understand that it
is alright to make deductions based on the function body.  The
code generators on the other hand map weak and weak_odr linkage
to the same thing.

llvm-svn: 66339

llvm-svn: 61253

This operation can be used to build dyn_cast, isa, and cast.

llvm-svn: 61252

- ability to insert previously created instructions using a builder
- creation of aliases
- creation of inline asm constants

Patch by Zoltan Varga!

llvm-svn: 61153

llvm-svn: 58650

s/ParamAttr/Attribute/g
s/PAList/AttrList/g
s/FnAttributeWithIndex/AttributeWithIndex/g
s/FnAttr/Attribute/g

This sets the stage 
- to implement function notes as function attributes and 
- to distinguish between function attributes and return value attributes.

This requires corresponding changes in llvm-gcc and clang.

llvm-svn: 56622

Based on patch by Giorgos Korfiatis.

llvm-svn: 55570

In particular, Collector was confusing to implementors. Several
thought that this compile-time class was the place to implement
their runtime GC heap. Of course, it doesn't even exist at runtime.
Specifically, the renames are:

  Collector               -> GCStrategy
  CollectorMetadata       -> GCFunctionInfo
  CollectorModuleMetadata -> GCModuleInfo
  CollectorRegistry       -> GCRegistry
  Function::getCollector  -> getGC (setGC, hasGC, clearGC)

Several accessors and nested types have also been renamed to be
consistent. These changes should be obvious.

llvm-svn: 54899

Please use !LLVMIsDeclaration instead.

llvm-svn: 54572

names. This can save a lot of allocations if you aren't going to be
looking at the output.

llvm-svn: 54546

llvm-svn: 51238

llvm-svn: 50620

Patch by Anders Johnsen!

llvm-svn: 50375

Patch by Anders Johnsen!

llvm-svn: 50360

Applying fix by Frits van Bommel.

llvm-svn: 50250

the result IRBuilder.  Patch by Dominic Hamon.

llvm-svn: 49604

llvm-svn: 48711

llvm-svn: 48528

Based on Erick Tryzelaar's patch.

llvm-svn: 48523

llvm-svn: 48418

llvm-svn: 48413

Patch by Erick Tryzelaar.

llvm-svn: 48379

Patch by Erick Tryzelaar.

llvm-svn: 48014

than double through the C bindings. Thanks to Tomas Lindquist
Olsen for reporting it.

llvm-svn: 46656

Patch by Bryan O'Sullivan!

llvm-svn: 45481

llvm-svn: 45450

llvm-svn: 45422

discussion of this change.  Boy are my fingers tired. ;-)

llvm-svn: 45411

llvm-svn: 45369

llvm-svn: 45367

to exceptions rather than variants for error handling in Ocaml.

llvm-svn: 45226

for Ocaml-based compilers targeting embedded devices. :)

llvm-svn: 45096

llvm-svn: 44899

methods are new to Function:

  bool hasCollector() const;
  const std::string &getCollector() const;
  void setCollector(const std::string &);
  void clearCollector();

The assembly representation is as such:

  define void @f() gc "shadow-stack" { ...

The implementation uses an on-the-side table to map Functions to 
collector names, such that there is no overhead. A StringPool is 
further used to unique collector names, which are extremely
likely to be unique per process.

llvm-svn: 44769

llvm-svn: 42760

the Objective Caml 'declare_*' functions to behave more or less like
getOrInsertFunction.

llvm-svn: 42740

llvm-svn: 42736

llvm-svn: 42713