it swaps the LHS/RHS of a single binop.

llvm-svn: 125700

llvm-svn: 125681

other getNode() methods.  Radar 9002173.

llvm-svn: 125665

llvm-svn: 125663

llvm-svn: 125660

llvm-svn: 125659

llvm-svn: 125658

llvm-svn: 125651

the right thing and stop trying to copy it. Fixes PR8944.

llvm-svn: 125648

transformation if we can't legally create a build vector of the correct
type. Check that we can make the transformation first, and add a TODO to
refactor this code with similar cases.

Fixes: PR9223 and rdar://9000350
llvm-svn: 125631

llvm-svn: 125630

llvm-svn: 125629

llvm-svn: 125625

Some single precision VFP instructions may be executed on NEON pipeline, but not double precision ones.

llvm-svn: 125624

integer. Fixes PR9228!

llvm-svn: 125613

This is submitted by Joerg Sonnenberger and fixes his PR8685.

llvm-svn: 125595

This is necessary to avoid a crash in certain tangled situations where a kill
flag is first correctly moved to a merged instruction, and then needs to be
moved again:

  STR %R0, a...
  STR %R0<kill>, b...

First becomes:

  STR %R0, b...
  STM a, %R0<kill>, ...

and then:

  STM a, %R0, ...
  STM b, %R0<kill>, ...

We can now remove the kill flag from the merged STM when needed. 8960050.

llvm-svn: 125591

Ignore DBG_VALUE machine instructions while constructing instruction ranges based on location info. 
Machine instruction range consisting of only DBG_VALUE MIs only contributes consecutive labels in assembly output, which is harmless, and empty scope entry in DebugInfo, which confuses debugger tools.

llvm-svn: 125577

llvm-svn: 125574

llvm-svn: 125571

llvm-svn: 125567

llvm-svn: 125563

-Use the tablegen class name for the checker class name.
-Mark checker packages as hidden/not hidden.

llvm-svn: 125558

Fix 9216 - Endless loop in InstCombine pass.
The pattern "A&(A^B) -> A & ~B" recreated itself because ~B is
actually a xor -1.

llvm-svn: 125557

llvm-svn: 125552

llvm-svn: 125547

llvm-svn: 125546

llvm-svn: 125544

llvm-svn: 125543

llvm-svn: 125537

llvm-svn: 125536

llvm-svn: 125534

Simplify the spill weight calculation a bit by bypassing
getApproximateInstructionCount() and using LiveInterval::getSize() directly.
This changes the computed spill weights, but only by a constant factor in each
function. It should not affect how spill weights compare against each other, and
so it shouldn't affect code generation.

llvm-svn: 125530

Do not hoist @llvm.dbg.value. Here, @llvm.dbg.value is "referring" a value that is modified inside loop.

llvm-svn: 125529

section.

llvm-svn: 125526

The i64_buildvector test in this file relies on the alignment of i64 and
f64 types being the same, which is true for Darwin but not AAPCS.

llvm-svn: 125525

Fix PR8854. Track inserted copies to avoid read before write. Sorry, it's hard to reduce a sensible small test case.

llvm-svn: 125523

llvm-svn: 125521

for all compiler invocations.

llvm-svn: 125513

builders unhappy.

llvm-svn: 125504