Always print options that differ from their implicit default. At least
for simple option types.

llvm-svn: 176572

This way, clang -mllvm -print-options shows that the driver is overriding it.

llvm-svn: 176569

GlobalValue linkage up to ExternalLinkage in the ExtractGV pass. This
prevents linkonce and linkonce_odr symbols from being DCE'd.

llvm-svn: 176459

It's possible (e.g. after an LTO build) that an internal global may be used for
debugging purposes. If that's the case appending a '.b' to it makes it hard to
find that variable. Steal the name from the old GV before deleting it so that
they can find that variable again.

llvm-svn: 175104

llvm-svn: 174241

says, but that's a defect (to be filed). "Cls::purevfn()" is still an odr use.

Also fixes a bug in the previous patch that caused us to not mark the function
referenced just because we didn't want to mark it odr used.

llvm-svn: 174240

llvm-svn: 173992

There are still places which treat the Attribute object as a collection of
attributes. I'm systematically removing them.

llvm-svn: 173990

Because BBVectorize may significantly shorten a loop body, unroll
again after vectorization. This is especially important when using
runtime or partial unrolling.

llvm-svn: 173730

Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.

llvm-svn: 173647

In the future, AttributeWithIndex won't be used anymore. Besides, it exposes the
internals of the AttributeSet to outside users, which isn't goodness.

llvm-svn: 173601

In the future, AttributeWithIndex won't be used anymore. Besides, it exposes the
internals of the AttributeSet to outside users, which isn't goodness.

llvm-svn: 173600

The 'getSlot' function and its ilk allow introspection into the AttributeSet
class. However, that class should be opaque. Allow access through accessor
methods instead.

llvm-svn: 173522

llvm-svn: 173499

created InternalizePass (useful for pass reuse)

llvm-svn: 173474

SSPStrong applies a heuristic to insert stack protectors in these situations:

* A Protector is required for functions which contain an array, regardless of
  type or length.

* A Protector is required for functions which contain a structure/union which
  contains an array, regardless of type or length.  Note, there is no limit to
  the depth of nesting.

* A protector is required when the address of a local variable (i.e., stack
  based variable) is exposed. (E.g., such as through a local whose address is
  taken as part of the RHS of an assignment or a local whose address is taken as
  part of a function argument.)

This patch implements the SSPString attribute to be equivalent to
SSPRequired. This will change in a subsequent patch.

llvm-svn: 173230

Collections of attributes are handled via the AttributeSet class now. This
finally frees us up to make significant changes to how attributes are structured.

llvm-svn: 173228

when removing one attribute. This further encapsulates the use of the attributes.

llvm-svn: 173214

when adding a single attribute to the function.

llvm-svn: 173210

Use the AttributeSet when we're talking about more than one attribute. Add a
function that adds a single attribute. No functionality change intended.

llvm-svn: 173196

This further restricts the use of the Attribute class to the Attribute family of
classes.

llvm-svn: 173098

This is more code to isolate the use of the Attribute class to that of just
holding one attribute instead of a collection of attributes.

llvm-svn: 173094

a dynamic analysis done on each call to the routine. However, now it can
use the standard pass infrastructure to reference other analyses,
instead of a silly setter method. This will become more interesting as
I teach it about more analysis passes.

This updates the two inliner passes to use the inline cost analysis.
Doing so highlights how utterly redundant these two passes are. Either
we should find a cheaper way to do always inlining, or we should merge
the two and just fiddle with the thresholds to get the desired behavior.
I'm leaning increasingly toward the latter as it would also remove the
Inliner sub-class split.

llvm-svn: 173030

Formatting fixes brought to you by clang-format.

llvm-svn: 173029

functionality changed.

llvm-svn: 173028

Further encapsulation of the Attribute object. Don't allow direct access to the
Attribute object as an aggregate.

llvm-svn: 172853

Because the Attribute class is going to stop representing a collection of
attributes, limit the use of it as an aggregate in favor of using AttributeSet.
This replaces some of the uses for querying the function attributes.

llvm-svn: 172844

llvm-svn: 172358

Found by valgrind.

llvm-svn: 172318

llvm-svn: 172271

Specifically:
1. Added a missing new line when we emit a debug message saying that we are marking a global variable as constant.
2. Added debug messages that describe what is occuring when GlobalOpt is evaluating a block/function.
3. Added a debug message that says what specific constructor is being evaluated.

llvm-svn: 172247

llvm-svn: 172051

llvm-svn: 171749

implementation lives already.

llvm-svn: 171746

builder these days, and this thing hasn't seen updates for a very long
time.

llvm-svn: 171741

Move the loop vectorizer from O2 to O3. It looks like the increase in code size actually hurts the performance on many programs.

llvm-svn: 171471

into their new header subdirectory: include/llvm/IR. This matches the
directory structure of lib, and begins to correct a long standing point
of file layout clutter in LLVM.

There are still more header files to move here, but I wanted to handle
them in separate commits to make tracking what files make sense at each
layer easier.

The only really questionable files here are the target intrinsic
tablegen files. But that's a battle I'd rather not fight today.

I've updated both CMake and Makefile build systems (I think, and my
tests think, but I may have missed something).

I've also re-sorted the includes throughout the project. I'll be
committing updates to Clang, DragonEgg, and Polly momentarily.

llvm-svn: 171366

The later API is nicer than the former, and is correct regarding wrap-around offsets (if anyone cares).
There are a few more places left with duplicated code, which I'll remove soon.

llvm-svn: 171259

llvm-svn: 171255

directly.

This is in preparation for removing the use of the 'Attribute' class as a
collection of attributes. That will shift to the AttributeSet class instead.

llvm-svn: 171253