llvm-svn: 143753

Enhanced vzeroupper insertion pass that avoids inserting vzeroupper where it is unnecessary through local analysis.  Patch from Bruno Cardoso Lopes, with some additional changes.

I'm going to wait for any review comments and perform some additional testing before turning this on by default.

llvm-svn: 143750

llvm-svn: 143749

in a 16-bit immediate.  However, for the shorter non-legal types (i.e., i1, i8,
i16) we should not sign-extend.  This prevents us from materializing things
such as 'true' (i.e., i1 1).

llvm-svn: 143743

llvm-svn: 143739

llvm-svn: 143738

for target definitions.

llvm-svn: 143731

added a layer of indirection with no value (not even conciseness).

llvm-svn: 143727

point back in the file in the included testcase. Fixes PR11300.

llvm-svn: 143726

llvm-svn: 143719

llvm-svn: 143712

llvm-svn: 143695

llvm-svn: 143683

llvm-svn: 143675

llvm-svn: 143670

llvm-svn: 143669

the end of it is dead.", which appears to break bootstrapping LLVM.

llvm-svn: 143668

across calls, and only check for nested dependences on the special
call-sequence-resource register.

llvm-svn: 143660

llvm-svn: 143646

llvm-svn: 143640

llvm-svn: 143634

Only currently done if the later store is writing to a power of 2 address or 
has the same alignment as the earlier store as then its likely to not break up
large stores into smaller ones

Fixes <rdar://problem/10140300>

llvm-svn: 143630

llvm-svn: 143612

llvm-svn: 143603

Treat objc selector reference globals as invariant so that MachineLICM can hoist them out of loops.  Fixes <rdar://problem/6027699>

llvm-svn: 143600

compatibility in the BitcodeReader.

llvm-svn: 143598

llvm-svn: 143594

llvm-svn: 143591

into the function. Reflect that here so that the array will be placed next to
the SP.
<rdar://problem/10128329>

llvm-svn: 143590

llvm-svn: 143582

implied by directory index zero.

llvm-svn: 143570

llvm-svn: 143562

llvm-svn: 143561

llvm-svn: 143559

Fix the issue that r143552 was trying to address the _right_ way.  One-register lists are legal on LDM/STM instructions, but we should not print the PUSH/POP aliases when they appear.  This fixes round tripping on this instruction.

llvm-svn: 143557

Thanks to Nick for spotting this!

llvm-svn: 143556

The rules disallowing single-register reglist operands only apply to the POP alias, not to LDM/STM instructions.  Revert r143552.

llvm-svn: 143553

Register list operands are not allowed to contain only a single register.  Alternate encodings are used in that case.

llvm-svn: 143552

llvm-svn: 143549

llvm-svn: 143547