The register unit lists are typically much shorter than the register
overlap lists, and the backing table for register units has better cache
locality because it is smaller.

This makes llc about 0.5% faster. The regsOverlap() function isn't that hot.

llvm-svn: 157651

Register units are already used internally in TableGen to compute
register pressure sets and overlapping registers. This patch makes them
available to the code generators.

The register unit lists are differentially encoded so they can be reused
for many related registers. This keeps the total size of the lists below
200 bytes for most targets. ARM has the largest table at 560 bytes.

Add an MCRegUnitIterator for traversing the register unit lists. It
provides an abstract interface so the representation can be changed in
the future without changing all clients.

llvm-svn: 157650

 - hoist checks out of loops where SCEV is smart enough
 - add additional statistics to measure how much we loose for not supporting interprocedural and pointers loaded from memory

llvm-svn: 157649

Do not show the derived registers like "eax", ... for the vanilla "register read" command.
Also add a test scenario for that.

llvm-svn: 157647

This patch fixes it. // rdar://11488351

llvm-svn: 157646

llvm-svn: 157644

llvm-svn: 157643

llvm-svn: 157642

getter result type is safe but does not match with property 
type resulting in spurious warning followed by crash in
IRGen. // rdar://11515196

llvm-svn: 157641

llvm-svn: 157640

llvm-svn: 157639

This is a clean-room implementation based on public documentation and
I tried to validate it as much as possible against gcc.

llvm-svn: 157638

llvm-svn: 157635

Add intrinsics, code gen, assembler and disassembler support for the SSE4a extrq and insertq instructions.

This required light surgery on the assembler and disassembler
because the instructions use an uncommon encoding. They are
the only two instructions in x86 that use register operands
and two immediates.

llvm-svn: 157634

the Clang::ConstructJob() to the new ArgList::getLastArg() routine
with eight argument. That simplifies reusing of this code.

llvm-svn: 157633

ranges for the instruction about to be bundled. This fixes a bug in an external
project where an assertion was triggered due to spurious 'multiple defs' within
the bundle.

Patch by Ivan Llopard. Thanks Ivan!

llvm-svn: 157632

rdar://problem/10996978 - Fixing an issue where crash reports for the expression parser might include symbols from the user's application

llvm-svn: 157631

This doesn't really fit the existing SSELevel so it gets an extra flag.

llvm-svn: 157630

llvm-svn: 157629

llvm-svn: 157628

r155737 turned out to be a temporary work around.  The correct fix was in r155823.

llvm-svn: 157627

llvm-svn: 157626

llvm-svn: 157625

llvm-svn: 157624

llvm-svn: 157621

llvm-svn: 157620

llvm-svn: 157619

Also replace hard-coded paths with a variable.
Fixed a comment.
Included missing dependencies on Mac OS X (lldbPluginDynamicLoaderPOSIX.a
is a common dependency).
We can't use EXPORTED_SYMBOL_FILE on Darwin right now, don't pass it to
the linker just yet.

llvm-svn: 157618

uncovered when doing so.

llvm-svn: 157617

llvm-svn: 157616

llvm-svn: 157615

llvm-svn: 157614

llvm-svn: 157613

llvm-svn: 157612

which will contain code shared between asan and tsan run-times.

Naming is hard. If you can suggest a better name for the directory -- speak up.

llvm-svn: 157611

llvm-svn: 157608

Store a pointer to each ScopStmt in the isl_id associated with the space of its
domain. This will later allow us to recover the statement during code
generation with isl.

llvm-svn: 157607

In general, all code that we produce is NSW.

llvm-svn: 157606

We will reuse this function for the isl code generator.

llvm-svn: 157605

llvm-svn: 157604