Haiku like Linux provides <regex.h>, so use it. Patch by Paul Davey!

llvm-svn: 106620

Revert r106066, "Create a more targeted fix for not sinking instructions into a range where it"... it causes bzip2 to be miscompiled by Clang.

Conflicts:

	lib/CodeGen/MachineSink.cpp

llvm-svn: 106614

llvm-svn: 106611

Thanks Daniel!

llvm-svn: 106608

later on. But we need them saved in the symbols directory.

llvm-svn: 106604

Replace ScalarEvolution's private copy of getLoopPredecessor
with LoopInfo's public copy.

llvm-svn: 106603

llvm-svn: 106600

allocation details.

llvm-svn: 106599

llvm-svn: 106598

is another max which folds. This fixes PR7454.

llvm-svn: 106594

testcases this time.

llvm-svn: 106593

If a metadata operand is seeded in value map and the metadata should also be seeded in value map. This is not limited to function local metadata. 

Failure to seed metdata in such cases causes troubles when in a cloned module, metadata from a new module refers to values in old module. Usually this results in mysterious bugpoint crashes. For example,

 Checking to see if we can delete global inits: Unknown constant!
 UNREACHABLE executed at /d/g/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp:904!

llvm-svn: 106592

llvm-svn: 106591

llvm-svn: 106588

llvm-svn: 106586

instructions.

This does not affect codegen much because SUBREG_TO_REG is only used by X86 and
X86 does not use the register scavenger, but it prevents verifier errors.

llvm-svn: 106583

Radar 8031193.

llvm-svn: 106582

during test runs.

llvm-svn: 106577

llvm-svn: 106576

llvm-svn: 106575

llvm-svn: 106574

llvm-svn: 106573

a toplevel 'defm', make sure to properly resolve references.

llvm-svn: 106570

llvm-svn: 106569

llvm-svn: 106563

llvm-svn: 106562

Reapply Bob's patch.

llvm-svn: 106560

llvm-svn: 106557

llvm-svn: 106556

into a utility routine, teach it how to update MachineLoopInfo, and
make use of it in MachineLICM to split critical edges on demand.

llvm-svn: 106555

Measurements show that it does not speed up coalescing, so there is no reason
the keep the added complexity around.

Also clean out some unused methods and static functions.

llvm-svn: 106548

getLoopPreheader into a separate function, for clients which don't
require a proper preheader.

llvm-svn: 106543

llvm-svn: 106542

llvm-svn: 106539

llvm-svn: 106538

constant operands.

llvm-svn: 106537

llvm-svn: 106529

llvm-svn: 106528

--- Reverse-merging r106508 into '.':
U    lib/Transforms/Utils/CloneModule.cpp

llvm-svn: 106521

kill and dead flags will end up on.

llvm-svn: 106520