Summary:
This change makes CMake scan for lit suites and generate a target for each lit test suite. The targets follow the format check-<project>-<suite path>.

For example:
check-llvm-unit - Runs the LLVM unit tests
check-llvm-codegen-arm - Runs the ARM codeine tests

Note: These targets are not generated during multi-configuration generators (i.e. Xcode and Visual Studio) because target clutter impacts UI usability.

Reviewers: chandlerc

Subscribers: aemerson, llvm-commits

Differential Revision: http://reviews.llvm.org/D8380

llvm-svn: 232671

appears to have broken tests/bots.

This reverts commit r232660.

llvm-svn: 232670

Committed too early.

This reverts commit r232666.

llvm-svn: 232667

they can be used without a subtarget in constructing subtarget
independent passes.

llvm-svn: 232666

as we don't necessarily need to do this yet - though we could move
the base class to the TargetMachine as it isn't subtarget dependent.

This reverts commit r232103.

llvm-svn: 232665

No outlining is necessary for SEH catch blocks. Use the blockaddr of the
handler in place of the usual outlined function.

Reviewers: majnemer, andrew.w.kaylor

Differential Revision: http://reviews.llvm.org/D8370

llvm-svn: 232664

llvm-svn: 232663

The MSVC linker won't produce a .lib file for an executable that doesn't
export anything, and LLVM doesn't maintain dllexport annotations or .def
files listing all C++ symbols. It also doesn't support exporting all
symbols, like binutils ld.

CMake 3.2 changed the Ninja generator to list both the .exe and .lib
files as outputs of executable build targets. Ninja would always re-link
executables with ENABLE_EXPORTS because the .lib output file was not
present, and therefore the target was out of date.

llvm-svn: 232662

Should bring the bots back.

llvm-svn: 232661

Currently v2i64 vectors shifts (non-equal shift amounts) are scalarized, costing 4 x extract, 2 x x86-shifts and 2 x insert instructions - and it gets even more awkward on 32-bit targets.

This patch separately shifts the vector by both shift amounts and then shuffles the partial results back together, costing 2 x shuffles and 2 x sse-shifts instructions (+ 2 movs on pre-AVX hardware).

Note - this patch only improves the SHL / LSHR logical shifts as only these are supported in SSE hardware.

Differential Revision: http://reviews.llvm.org/D8416

llvm-svn: 232660

[Objdump] DumpBytes of uint8_t from ArrayRef<uint8_t> instead of char from StringRef.  Removing reinterpret_casts.

llvm-svn: 232659

This removes duplicated code from backends that don't need to do anything
fancy.

llvm-svn: 232658

llvm-svn: 232657

This reverts r232650.

Missed a piece of code in the previous commit.

llvm-svn: 232656

llvm-svn: 232654

When calculating the lanemask of a register class we have to include the
masks of subregisters supported by any of the class members, not just
the ones supported by all class members.

This fixes problems when coalescing towards a subclass with additional
subregisters available.

The attached testcase works fine as is, but does crash if you enable
subregister liveness on x86 without this change applied.

llvm-svn: 232652

We can get there with .code64.

Fixes pr22349.

llvm-svn: 232651

llvm-svn: 232650

The checks here were so vague that we could nuke intrinsics
from existence and still pass the test because we'd match
the function name.

llvm-svn: 232647

llvm-svn: 232645

The 'vmovntdq' was only passing due to a fluke in
SandyBridge codegen that splits 32-byte stores in half, 
but that meant that the test was not correctly checking
for the 32-byte store that we thought we were generating.

The lax checking in this file will be addressed in
another commit. There are bigger problems here.

llvm-svn: 232644

llvm-svn: 232643

llvm-svn: 232636

Visual C++ 2013 complains "warning C4138: '*/' found outside of comment"
about the code

 CallInst */*CI*/

but compiles OK. clang-formatting these lines adds an extra space and
makes Visual C++ satisfied.

llvm-svn: 232630

The two hot blocks are right next to each other and I verified that
there is no performance regression by compressing/uncompressing some
files with a minigzip built with the different options.

llvm-svn: 232629

Memcpy, and other memory intrinsics, typically tries to use LDM/STM if
the source and target addresses are 4-byte aligned. In CodeGenPrepare
look for calls to memory intrinsics and, if the object is on the
stack, 4-byte align it if it's large enough that we expect that memcpy
would want to use LDM/STM to copy it.

Differential Revision: http://reviews.llvm.org/D7908

llvm-svn: 232627

llvm-svn: 232626

Now that SmallString is a first-class citizen, most SmallString::str()
calls are not required. This patch removes a whole bunch of them, yet
there are lots more.

There are two use cases where str() is really needed:
1) To use one of StringRef member functions which is not available in
SmallString.
2) To convert to std::string, as StringRef implicitly converts while 
SmallString do not. We may wish to change this, but it may introduce
ambiguity.

llvm-svn: 232622

Currently, there are no itineraries defined for ext and ins instructions.
This patch adds these itineraries and uses them in the instruction definitions.

Reviewed By: dsanders

Differential Revision: http://reviews.llvm.org/D7209

llvm-svn: 232613

llvm-svn: 232584

fix BPF backend build broken by r232429

Patch by Brenden Blanco

llvm-svn: 232581

These BEXTR cases are a check for the 64-bit load form and two negative cases where the bitrange is non-contiguous.  From a private patch equivalent to r189742/PR17028.

llvm-svn: 232580

llvm-svn: 232578

llvm-svn: 232577

Summary:
This change teaches isImpliedCond to infer things like "X sgt 0" => "X -
1 sgt -1".  The `ConstantRange` class has the logic to do the heavy
lifting, this change simply gets ScalarEvolution to exploit that when
reasonable.

Depends on D8345

Reviewers: atrick

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8346

llvm-svn: 232576

Summary:
This change splits `makeICmpRegion` into `makeAllowedICmpRegion` and
`makeSatisfyingICmpRegion` with slightly different contracts.  The first
one is useful for determining what values some expression //may// take,
given that a certain `icmp` evaluates to true.  The second one is useful
for determining what values are guaranteed to //satisfy// a given
`icmp`.

Reviewers: nlewycky

Reviewed By: nlewycky

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8345

llvm-svn: 232575

Targets which provide a rotate make it possible to replace a sequence of
(XOR (SHL 1, x), -1) with (ROTL ~1, x).  This saves an instruction on
architectures like X86 and POWER(64).

Differential Revision: http://reviews.llvm.org/D8350

llvm-svn: 232572

COFF COMDATs (for selection kinds other than 'select any') require at
least one non-section symbol in the symbol table.
Satisfy this by morally enhancing the linkage from private to internal.

Differential Revision: http://reviews.llvm.org/D8394

llvm-svn: 232570

- SelectSelect, and
- SelectTruncate

llvm-svn: 232569

Cleanup some bitrot in SourceLevelDebugging.rst.

  - Pull the still-relevant details about individual descriptors into
    LangRef.rst.  Cut a lot of it to avoid over-describing the fields,
    as the C++ classes and assembly format are mostly self-describing
    now.  If there's anything specific that I shouldn't have cut, let me
    know and I'll add it back.
  - Rewrite the remaining sections to refer to the new debug info
    hierarchy in LangRef.rst.

llvm-svn: 232566