llvm-svn: 173495

llvm-svn: 173494

The order in which operands appear in the encoded instruction is different
to order in which they appear in assembly. This changes the XCore backend to
use the instruction encoding order.

llvm-svn: 173493

politely report it instead of running into llvm_unreachable.

Also patch llvm-dwarfdump to actually check whether the file it's attempting to
dump is a valid object file.

llvm-svn: 173489

llvm-svn: 173487

Suggested by Sean Silva.

llvm-svn: 173481

Flags for dumping specific DWARF sections added in lib/DebugInfo and
llvm-dwarfdump.

llvm-svn: 173480

llvm-svn: 173479

llvm-svn: 173478

With this change the operands order matches the order in which the operands
are encoded in the instruction.

llvm-svn: 173477

llvm-svn: 173476

llvm-svn: 173475

created InternalizePass (useful for pass reuse)

llvm-svn: 173474

custom git script called git-svnup which handles all of the work of
using the git-mirrors/keeping the git-svn numbers in sync.

llvm-svn: 173472

llvm-svn: 173471

llvm-svn: 173468

llvm-svn: 173467

llvm-svn: 173460

Fixes PR15054.

llvm-svn: 173459

This warning fires on:
  Operator::~Operator() {
    llvm_unreachable("should never destroy an Operator");
  }

That seems like a false positive.  I don't see any good way to silence
the warning here, so I'm disabling it.

llvm-svn: 173455

llvm-svn: 173454

llvm-svn: 173453

Only for integers, pointers, and vectors of those. No floats.
Instrumentation seems very heavy, and may need to be replaced
with some approximation in the future.

llvm-svn: 173452

with an initial number of elements,  instead of DenseMap, which has
zero initial elements, in order to avoid the copying of elements
when the size changes and to avoid allocating space every time
LegalizeTypes is run. This patch will not affect the memory footprint,
because DenseMap will increase the element size to 64
when the first element is added.

Patch by Wan Xiaofei.

llvm-svn: 173448

Uses the new !add TableGen operator to do more cleanup of the
PPC register definitions.

llvm-svn: 173446

This adds an !add(a, b) operator to tablegen; this will be used
to cleanup the PPC register definitions.

llvm-svn: 173445

Fixed the condition codes for the atomic64 min/umin code generation on ARM. If the sutraction of the higher 32 bit parts gives a 0 result, we need to do the store operation.

llvm-svn: 173437

llvm-svn: 173434

llvm-svn: 173433

llvm-svn: 173432

llvm-svn: 173431

This fixes DAG subtree analysis at the boundary.

llvm-svn: 173427

Maintain separate per-node and per-tree book-keeping.
Track all instructions above a DAG node including nested subtrees.
Seperately track instructions within a subtree.
Record subtree parents.

llvm-svn: 173426

Allow the strategy to select SchedDFS. Allow the results of SchedDFS
to affect initialization of the scheduler state.

llvm-svn: 173425

llvm-svn: 173424

llvm-svn: 173423

llvm-svn: 173421

This is mostly refactoring, along with adding an instruction count
within the subtrees and ensuring we only look at data edges.

llvm-svn: 173420

loops over instructions in the basic block or the use-def list of the
value, neither of which are really efficient when repeatedly querying
about values in the same basic block.

What's more, we already know that the CondBB is small, and so we can do
a much more efficient test by counting the uses in CondBB, and seeing if
those account for all of the uses.

Finally, we shouldn't blanket fail on any such instruction, instead we
should conservatively assume that those instructions are part of the
cost.

Note that this actually fixes a bug in the pass because
isUsedInBasicBlock has a really terrible bug in it. I'll fix that in my
next commit, but the fix for it would make this code suddenly take the
compile time hit I thought it already was taking, so I wanted to go
ahead and migrate this code to a faster & better pattern.

The bug in isUsedInBasicBlock was also causing other tests to test the
wrong thing entirely: for example we weren't actually disabling
speculation for floating point operations as intended (and tested), but
the test passed because we failed to speculate them due to the
isUsedInBasicBlock failure.

llvm-svn: 173417

interface and allow other strategies to select it.

llvm-svn: 173413