Reimplement the parameter attributes support, phase #1. hilights:

1. There is now a "PAListPtr" class, which is a smart pointer around
the underlying uniqued parameter attribute list object, and

Reimplement the parameter attributes support, phase #1. hilights:

1. There is now a "PAListPtr" class, which is a smart pointer around
the underlying uniqued parameter attribute list object, and manages
its refcount. It is now impossible to mess up the refcount.
2. PAListPtr is now the main interface to the underlying object, and
the underlying object is now completely opaque.
3. Implementation details like SmallVector and FoldingSet are now no
longer part of the interface.
4. You can create a PAListPtr with an arbitrary sequence of
ParamAttrsWithIndex's, no need to make a SmallVector of a specific
size (you can just use an array or scalar or vector if you wish).
5. All the client code that had to check for a null pointer before
dereferencing the pointer is simplified to just access the
PAListPtr directly.
6. The interfaces for adding attrs to a list and removing them is a
bit simpler.

Phase #2 will rename some stuff (e.g. PAListPtr) and do other less
invasive changes.

llvm-svn: 48289

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when the bitcode reader is referencing a paramattr, make sure to bump its refcount.

llvm-svn: 48276

Be backward compatible

llvm-svn: 48268

Honour aliases visibility when reading from/writing to bitcode

llvm-svn: 48248

Add an unwind_to field to basic blocks, making them Users instead of Values.
This is the first checkin for PR1269, the new EH infrastructure.

llvm-svn: 47802

Use SmallVector while constructing ReturnInst.

llvm-svn: 47619

Update bitcode reader and writer to handle multiple return values.
Take 2.

llvm-svn: 47583

Backing out r47521 for now. This has broken a number of tests.

llvm-svn: 47533

Properly read and write bitcodes for multiple return values.

llvm-svn: 47521

Split ParameterAttributes.h, putting the complicated
stuff into ParamAttrsList.h. Per feedback from
ParamAttrs changes.

llvm-svn: 47504

Read and write getresult.

llvm-svn: 47471

Use empty() instead of comparing size() with zero.

llvm-svn: 46514

Remove attribution from file headers, per discussion on llvmdev.

llvm-svn: 45418

Bring back int_x86_sse2_movl_dq intrinsic for backward compatibility. Make sure
it's auto-upgraded to a shufflevector instruction.

llvm-svn: 45131

Change the PointerType api for creating pointer types. The old functionality of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new p

Change the PointerType api for creating pointer types. The old functionality of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new prototype of PointerType::get() requires both a type and an address space.

llvm-svn: 45082

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Implement address space attribute for LLVM pointer types. Address spaces are
regions of memory that have a target specific relationship, as described in the
Embedded C Technical Report.

This also

Implement address space attribute for LLVM pointer types. Address spaces are
regions of memory that have a target specific relationship, as described in the
Embedded C Technical Report.

This also implements the 2007-12-11-AddressSpaces test,
which demonstrates how address space attributes can be used in LLVM IR.

In addition, this patch changes the bitcode signature for stores (in a backwards
compatible manner), such that the pointer type, rather than the pointee type, is
encoded. This permits type information in the pointer (e.g. address space) to be
preserved for stores.

LangRef updates are forthcoming.

llvm-svn: 44858

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Adding a collector name attribute to Function in the IR. These
methods are new to Function:

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

Adding a collector name attribute to Function in the IR. These
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

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Unbreak backwards compatibility with bytecode format. Regression
introduced by this patch:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071126/055824.html

llvm-svn: 44364

Fix PR1146: parameter attributes are longer part of
the function type, instead they belong to functions
and function calls. This is an updated and slightly
corrected version of Reid Spencer's origin

Fix PR1146: parameter attributes are longer part of
the function type, instead they belong to functions
and function calls. This is an updated and slightly
corrected version of Reid Spencer's original patch.
The only known problem is that auto-upgrading of
bitcode files doesn't seem to work properly (see
test/Bitcode/AutoUpgradeIntrinsics.ll). Hopefully
a bitcode guru (who might that be? :) ) will fix it.

llvm-svn: 44359

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In order for parameter attribute uniquing to make
any sense it is important that ParamAttr::None gets
treated the same as not supplying an attribute at
all. Rather than stripping ParamAttr::None out

In order for parameter attribute uniquing to make
any sense it is important that ParamAttr::None gets
treated the same as not supplying an attribute at
all. Rather than stripping ParamAttr::None out of
the list of attributes, assert if ParamAttr::None
is seen. Fix up the bitcode reader which liked to
insert ParamAttr::None all over the place. Patch
based on one by Török Edwin.

llvm-svn: 44250

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Add explicit keywords.

llvm-svn: 44234

Make labels work in asm blocks; allow labels as
parameters. Rename ValueRefList to ParamList
in AsmParser, since its only use is for parameters.

llvm-svn: 43734

Next PPC long double bits. First cut at constants.
No compile-time support for constant operations yet,
just format transformations. Make readers and
writers work. Split constants into 2 doubles i

Next PPC long double bits. First cut at constants.
No compile-time support for constant operations yet,
just format transformations. Make readers and
writers work. Split constants into 2 doubles in
Legalize.

llvm-svn: 42865

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Revise previous patch per review comments.
Next round of x87 long double stuff.
Getting close now, basically works.

llvm-svn: 41875

Add APInt interfaces to APFloat (allows directly
access to bits). Use them in place of float and
double interfaces where appropriate.
First bits of x86 long double constants handling
(untested, pro

Add APInt interfaces to APFloat (allows directly
access to bits). Use them in place of float and
double interfaces where appropriate.
First bits of x86 long double constants handling
(untested, probably does not work).

llvm-svn: 41858

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