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

Thanks Daniel!

llvm-svn: 106608

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

llvm-svn: 106603

llvm-svn: 106600

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

llvm-svn: 106576

llvm-svn: 106574

llvm-svn: 106573

llvm-svn: 106563

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

llvm-svn: 106542

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

getNamedMetadata().

llvm-svn: 106518

llvm-svn: 106517

llvm-svn: 106516

llvm-svn: 106515

llvm-svn: 106513

in addition to the kill flags.

llvm-svn: 106512

llvm-svn: 106508

but it will cover uses of blockaddress that are actually in a function.

llvm-svn: 106502

rolling our own.

llvm-svn: 106501

llvm-svn: 106500

llvm-svn: 106499