llvm-svn: 244483

llvm-svn: 244482

I looked into adding a warning / error for this to FileCheck, but there doesn't
seem to be a good way to avoid it triggering on the instances of it in RUN lines.

llvm-svn: 244481

llvm-svn: 244480

llvm-svn: 244479

llvm-svn: 244476

Differential Revision: http://reviews.llvm.org/D11687

llvm-svn: 244474

llvm-svn: 244472

llvm-svn: 244471

variable initialization from its usage in the push_back making
collapse of the two statements unlikely even without a comment.

llvm-svn: 244470

This change adds the unroll metadata "llvm.loop.unroll.enable" which directs
the optimizer to unroll a loop fully if the trip count is known at compile time, and
unroll partially if the trip count is not known at compile time. This differs from
"llvm.loop.unroll.full" which explicitly does not unroll a loop if the trip count is not
known at compile time.

The "llvm.loop.unroll.enable" is intended to be added for loops annotated with
"#pragma unroll".

llvm-svn: 244466

llvm-svn: 244465

llvm-svn: 244464

llvm-svn: 244463

llvm-svn: 244461

llvm-svn: 244460

llvm-svn: 244458

llvm-svn: 244457

llvm-svn: 244455

llvm-svn: 244452

Summary:
This adds a hook to TTI which enables us to selectively turn on by default
interleaved access vectorization for targets on which we have have performed
the required benchmarking.

Reviewers: rengolin

Subscribers: rengolin, llvm-commits

Differential Revision: http://reviews.llvm.org/D11901

llvm-svn: 244449

The scalarizer can cache incorrect entries when walking up a chain of
insertelement instructions. This occurs when it encounters more than one
instruction that it is not actively searching for, as it unconditionally caches
every element it finds. The fix is to only cache the first element that it
isn't searching for so we don't overwrite correct entries.

Reviewers: hfinkel

Differential Revision: http://reviews.llvm.org/D11559

llvm-svn: 244448

llvm-svn: 244447

llvm-svn: 244445

Summary:
Analogously to Function::viewCFG(), RegionInfo::view() and RegionInfo::viewOnly() are meant to be called in debugging sessions. They open a viewer to show how RegionInfo currently understands the region hierarchy.

The functions viewRegion(Function*) and viewRegionOnly(Function*) invoke a fresh region analysis of the function in contrast to viewRegion(RegionInfo*) and viewRegionOnly(RegionInfo*) which show the current analysis result.

Reviewers: grosser

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11875

llvm-svn: 244444

This allows printing region graphs when only the RegionInfo (e.g. Region::getRegionInfo()), but no RegionInfoPass object is available.

Specifically, we will use this to print RegionInfo graphs in the debugger.

Differential version: http://reviews.llvm.org/D11874

Reviewed-by: grosser
llvm-svn: 244442

Authorized-by: grosser
llvm-svn: 244441

llvm-svn: 244440

PR24139 contains an analysis of poor register allocation. One of the findings
was that when calculating the spill weight, a rematerializable interval once
split is no longer rematerializable. This is because the isRematerializable
check in CalcSpillWeights.cpp does not follow the copies introduced by live
range splitting (after splitting, the live interval register definition is a
copy which is not rematerializable).

Reviewers: qcolombet

Differential Revision: http://reviews.llvm.org/D11686

llvm-svn: 244439

llvm-svn: 244438

llvm-svn: 244434

Note, I didn't reformat entirely, but partially where I touched in previous commits.

llvm-svn: 244432

llvm-svn: 244431

llvm-svn: 244430

llvm-svn: 244429

llvm-svn: 244426

The SP was always unconditionally assigned to later, but initialised early.
This delays the initialisation, and avoids the dead store.  Identified by
clang static analysis.  No functional change intended.

llvm-svn: 244423

This is no longer used in any of the callers.  Also remove the logic of
handling this argument.

llvm-svn: 244421

LoopDistribution does its own filtering now.

llvm-svn: 244420

We can only PHI translate instructions.  In our attempt to PHI translate
a bitcast, we attempt to translate its operand; however, the operand
might be an argument or a global instead of an instruction.  Benignly
bail out when this happens.

This fixes PR24397.

Differential Revision: http://reviews.llvm.org/D11879

llvm-svn: 244418