llvm.memcpy/memset/memmove.  This allows removal of some 
hackish code from basicaa.

llvm-svn: 62071

change.

llvm-svn: 62067

not a random piece of it.  No functionality change.

llvm-svn: 62066

parse them.  tblgen doesn't yet do anything with this info though.

llvm-svn: 62065

to handle LLVMMatchType intrinsic parameters, and by adding new subclasses
of LLVMMatchType to match vector types with integral elements that are 
either twice as wide or half as wide as the elements of the matched type.

llvm-svn: 61834

llvm-svn: 61732

llvm-svn: 61713

llvm-svn: 61702

reduces the amount of code slightly when assertions are enabled.

llvm-svn: 61249

llvm-svn: 61209

llvm-svn: 61191

Add (error) and (empty).

llvm-svn: 61117

Prevents conflicts between plugins.

llvm-svn: 60871

Makes (forward) work better.

llvm-svn: 60667

llvm-svn: 60664

Use B instead of Beg (for consistency), but NodeA and NodeB instead of A
and B.

llvm-svn: 60663

This would be much easier to do if the CommandLine library didn't use
global state. Global state is evil.

llvm-svn: 60659

llvm-svn: 60658

Also includes a major refactoring. See documentation for more
information.

llvm-svn: 60656

  for(Type1 B = ...;;) { Type2 B ; ... }
is bad: code is hard to read and VS VS don't like it (it ignore the second declaration of B).
This patch fix the problem in tablegen. Please don't write code like this. 

llvm-svn: 60590

llvm-svn: 60487

foldMemoryOperand how to "fold" them, by converting them into constant-pool
loads. When they aren't folded, they use xorps/cmpeqd, but for example when
register pressure is high, they may now be folded as memory operands, which
reduces register pressure.

Also, mark V_SET0 isAsCheapAsAMove so that two-address-elimination will
remat it instead of copying zeros around (V_SETALLONES was already marked).

llvm-svn: 60461

is set but mayLoad is not set. Fix all the problems this turned up.

Change code to not use isSimpleLoad instead of mayLoad unless it
really wants isSimpleLoad.

llvm-svn: 60459

Support multiple compilation graph definitions. Not terribly useful, but makes the code more generic.

llvm-svn: 60199

llvm-svn: 60198

On x86 favors folding short immediate into some arithmetic operations (e.g. add, and, xor, etc.) because materializing an immediate in a register is expensive in turns of code size.
e.g.
movl 4(%esp), %eax
addl $4, %eax

is 2 bytes shorter than

movl $4, %eax
addl 4(%esp), %eax

llvm-svn: 60139

llvm-svn: 60099

llvm-svn: 59449

llvm-svn: 59448

Use strings instead of TableGen defs in the compilation graph
definition. Makes it easier for the plugins to modify an existing graph.

llvm-svn: 59447

llvm-svn: 59242

llvm-svn: 59241

"parameter" types. An intrinsic can now return a multiple return values like
this:

  def add_with_overflow : Intrinsic<[llvm_i32_ty, llvm_i1_ty],
                                    [LLVMMatchType<0>, LLVMMatchType<0>]>;

llvm-svn: 59237

When constructing std::strings from C strings, we should check the input
value to be not NULL so that the std::string constructor does not
segfault.
Fixes #3047.

llvm-svn: 59131

Only the tools that are mentioned in the compilation graph definition
are now inserted by PopulateCompilationGraph(). This should cut down
plugin loading time a little.

llvm-svn: 59097

llvm-svn: 59096

llvm-svn: 58922

Patch by Patrick Walton!

llvm-svn: 58901

exception, like it does for a std::string exception.

llvm-svn: 58865

nodes that are already selected.

llvm-svn: 58763