llvm-svn: 83756

llvm-svn: 83755

llvm-svn: 83754

the IR, and to implement the FIXME'd optimization.

llvm-svn: 83748

inserted only once, just use vector.  Don't compute ExitBlocks unless we
need it, change std::sort to array_pod_sort.

llvm-svn: 83747

from GVN, this also speeds it up, inserts fewer PHI nodes (see the
testcase) and allows it to remove more loads (due to fewer PHI nodes
standing in the way).

llvm-svn: 83746

llvm-svn: 83745

PHI nodes inserted.

llvm-svn: 83744

llvm-svn: 83742

not just at the end.  Add a big comment explaining when this could
be useful (which never happens for jump threading).

llvm-svn: 83741

what it does.

llvm-svn: 83740

Remove impdef of SRW. This fixes PR4779

llvm-svn: 83739

llvm-svn: 83707

DemoteRegToStack.  This makes it more efficient (because it isn't
creating a ton of load/stores that are eventually removed by a later
mem2reg), and more slightly more effective (because those load/stores
don't get in the way of threading).

llvm-svn: 83706

works on unstructured CFGs.  This implements PR217, our oldest open PR.

llvm-svn: 83705

llvm-svn: 83701

into MachineInstrs. This is mostly just moving the code from
ScheduleDAGSDNodesEmit.cpp into a new class. This decouples MachineInstr
emitting from scheduling.

llvm-svn: 83699

since it won't do any folding. This will help avoid some inconvenient
casting.

llvm-svn: 83698

llvm-svn: 83697

MachineInstr::isInvariantLoad instead, which has the benefit of being
more complete.

llvm-svn: 83696

llvm-svn: 83695

it isn't needed in the ScheduleDAGSDNodes schedulers.

llvm-svn: 83691

when loading from an invariant memory location.

llvm-svn: 83688

is trivially rematerializable and integrate it into
TargetInstrInfo::isTriviallyReMaterializable. This way, all places that
need to know whether an instruction is rematerializable will get the
same answer.

This enables the useful parts of the aggressive-remat option by
default -- using AliasAnalysis to determine whether a memory location
is invariant, and removes the questionable parts -- rematting operations
with virtual register inputs that may not be live everywhere.

llvm-svn: 83687

Extract scope information from the variable itself, instead of relying on alloca or llvm.dbg.declare location.

While recording beginning of a function, use scope info from the first location entry instead of just relying on first location entry itself.

llvm-svn: 83684

mappings, which could cause errors and assert-failures.  This patch fixes that,
adds a test, and refactors the global-mapping-removal code into a single place.

llvm-svn: 83678

llvm-svn: 83677

constants used in inlining heuristics (especially
those used in more than one file).  No functional change.

llvm-svn: 83675

lists.  Changed ARMAsmParser::MatchRegisterName to return -1 instead of 0 on
errors so 0-15 values could be returned as register numbers.  Also added the
rest of the arm register names to the currently hacked up version to allow more
testing.  Some changes to ARMAsmParser::ParseOperand to give different errors
for things not yet supported and some additions to the hacked
ARMAsmParser::MatchInstruction to allow more testing for now.

llvm-svn: 83673

TargetInstrDesc::isRematerializable flag, so it isn't necessary to do
this check in its callers.

llvm-svn: 83671

when one of the bits being tested would end up being the sign bit in the
narrower type, and a signed comparison is being performed, since this would
change the result of the signed comparison. This fixes PR5132.

llvm-svn: 83670

information when unfolding memory references.

llvm-svn: 83656

Check invalid debug info for enums. This may happen when underlyng enum is optimized away. Eventually DwarfChecker will clean this up during llvm verification stage.

llvm-svn: 83655

llvm-svn: 83653

llvm-svn: 83649

llvm-svn: 83624

llvm-svn: 83622

llvm-svn: 83608

instructions.

llvm-svn: 83606

and that will make Caller too big to inline, see if it
might be better to inline Caller into its callers instead.
This situation is described in PR 2973, although I haven't
tried the specific case in SPASS.

llvm-svn: 83602