llvm-svn: 270914

Previously CMake would successfully configure and compile (with warnings
about ``-fsanitize-coverage=...`` being unused) but the tests LibFuzzer
tests would fail.

Differential Revision: http://reviews.llvm.org/D20662

llvm-svn: 270913

Previously the flags were only being set correctly when the
build type was "Release". Now the build should work properly
for all the supported build types. When building libFuzzer
the optimization level respects whatever is used for the
rest of LLVM but for the LibFuzzer tests we force -O0.

Differential Revision: http://reviews.llvm.org/D20558

llvm-svn: 270912

This adds support for YAML round tripping dyld info weak bindings. The storage and format of these is the same as regular bind opcodes, they are just interpreted differently by dyld.

llvm-svn: 270911

MIPS .reginfo and .MIPS.options sections are consumed by the linker, and
the linker produces a single output section. But it is possible that
input files contain section symbol points to the corresponding input
section. In case of generation a relocatable output we need to write
such symbols to the output file.

Fixes bug 27878.

Differential Revision: http://reviews.llvm.org/D20688

llvm-svn: 270910

llvm-svn: 270909

Global variables and aliases are emitted eagerly, but there may not be any in
the incoming module. In that case, we can save some memory and compile time by
not building, emitting and tracking an empty globals module.

llvm-svn: 270908

llvm-svn: 270907

We were creating a weak external that tried to reference a static symbol. That
would always fail to link with link.exe.

We now create an external symbol in the same position as the local and refer
to that. This works with link.exe and matches what gas does.

llvm-svn: 270906

llvm-svn: 270905

pretty stack trace entries for all cases where we instantiate the definition of
something, and include the fully-qualified name with template arguments in the
name of the instantiated entity.

llvm-svn: 270904

crash was due to a stack overflow, chances are good that this would also cause
a stack overflow.

llvm-svn: 270903

llvm-svn: 270902

This adds support for YAML round tripping dyld info bind opcodes. Bind opcodes can have signed or unsigned LEB128 data, and they can have symbols associated with them.

llvm-svn: 270901

[libFuzzer] reimplement the way we do -only_ascii to allow more 'const' in function declarations. Add a test for -only_ascii. NFC intended

llvm-svn: 270900

Symbol resolution should be done on the top layer of the stack unless there's a
good reason to do otherwise. In this case it would have worked because
OptimizeLayer::addModuleSet eagerly passes all modules down to the
CompileLayer, meaning that searches in CompileLayer will find the definitions.
In later chapters where the top layer's addModuleSet isn't a pass-through, this
would break.

llvm-svn: 270899

The aggressive anti-dependency breaker can rename the restored callee-
saved registers. To prevent this, mark these registers are live on all
paths to the return/tail-call instructions, and add implicit use operands
for them to these instructions.

llvm-svn: 270898

Re-commit r270748 "clang-cl: Treat dllimport explicit template instantiation definitions as declarations (PR27810, PR27811)"

Also make explicit instantiation decls not apply to nested classes when
targeting MSVC. That dll attributes are not inherited by inner classes
might be the explanation for MSVC's behaviour here.

llvm-svn: 270897

Canonicalize (srl (bswap i32 x), 16) to (rotr (bswap i32 x), 16), if the high
16-bits of x are zero. Similarly, canonicalize (srl (bswap i64 x), 32) to
(rotr (bswap i64 x), 32), if the high 32-bits of x are zero.

test_rev_w_srl16:            test_rev_w_srl16:
  and w8, w0, #0xffff          and     w8, w0, #0xffff
  rev w8, w8           --->    rev16   w0, w8
  lsr     w0, w8, #16

test_rev_x_srl32:            test_rev_x_srl32:
  rev x8, x8           --->    rev32   x0, x8
  lsr x0, x8, #32

llvm-svn: 270896

Differential Revision: http://reviews.llvm.org/D20336

llvm-svn: 270895

Summary: Enable load-store-opt by default, and update LIT tests.

Reviewers: arsenm

Differential Revision: http://reviews.llvm.org/D20694

llvm-svn: 270894

r270777 improved the precision of alloca vs. inbounbds GEP alias queries: if
we have (a) an inbounds GEP and (b) a pointer based on an alloca, and the
beginning of the object the GEP points to would have a negative offset with
respect to the alloca, then the GEP can not alias pointer (b).

This makes the same logic fire when (b) is based on a GlobalVariable instead
of an alloca.

Differential Revision: http://reviews.llvm.org/D20652

llvm-svn: 270893

An exception could prevent a store from occurring but MemCpyOpt's
callslot optimization would fire anyway, causing the store to occur.

This fixes PR27849.

llvm-svn: 270892

Make sure that we succeed in starting a definition before we complete it and emit an error if we fail to start the definition.

ClangASTContext::StartTagDeclarationDefinition(...) was starting definitions for any TagType instances that have TagDecl, but ClangASTContext::CompleteTagDeclarationDefinition(...) was getting the type to a CXXRecordDecl with:

    clang::CXXRecordDecl *cxx_record_decl = qual_type->getAsCXXRecordDecl();
    
The problem is that getAsCXXRecordDecl() might dig a bit deeper into a type and dig out a different decl, which means we might call ClangASTContext::StartTagDeclarationDefinition(...), but it might not do anything, and then we might call ClangASTContext::CompleteTagDeclarationDefinition(...) and it might try to complete something that didn't have its definition started and this will crash.

This change fixes that, and also makes sure that starting a definition succeeds before any calls to ClangASTContext::CompleteTagDeclarationDefinition().
                                                    
<rdar://problem/24091798>

llvm-svn: 270891

The OMP_PROC_BIND=spread strategy fails to assign the master thread the
correct place partition after the first parallel region. Other threads in the
hot team will remember their place_partition, but the master's place partition
is restored to what it was before entering the parallel region. So when the hot
team is used for subsequent parallel regions, the master has lost this info.
This fix calls __kmp_partition_places to update only the master thread's place
partition in the spread case when there are no other changes to the hot team.

Patch by Terry Wilmarth

Differential Revision: http://reviews.llvm.org/D20539

llvm-svn: 270890

llvm-svn: 270889

This fixes PR27879.

Differential Revision: http://reviews.llvm.org/D20659

llvm-svn: 270888

Require that Hexagon is a registered target.

llvm-svn: 270887

Summary: This patch implements the code generation for the `target update` directive. The implemntation relies on the logic already in place for target data standalone directives, i.e. target enter/exit data.

Reviewers: hfinkel, carlo.bertolli, arpith-jacob, kkwli0, ABataev

Subscribers: caomhin, cfe-commits

Differential Revision: http://reviews.llvm.org/D20650

llvm-svn: 270886

llvm-svn: 270885

On Blue Gene/Q, having LIBOMP_USE_ITT_NOTIFY support compiled into a
statically-linked binary causes a failure at runtime because dlopen fails.
This patch changes LIBOMP_USE_ITT_NOTIFY to a cacheable configuration setting
that can be disabled.

Patch by John Mellor-Crummey

Differential Revision: http://reviews.llvm.org/D20517

llvm-svn: 270884

It looks like this doesn't get a lot of use.

llvm-svn: 270883

Summary:
The patch contains the parsing and sema support for the `from` clause. 

Patch based on the original post by Kelvin Li.

Reviewers: hfinkel, carlo.bertolli, kkwli0, arpith-jacob, ABataev

Subscribers: caomhin, cfe-commits

Differential Revision: http://reviews.llvm.org/D18488

llvm-svn: 270882

APInt::slt was copying the LHS and RHS in to temporaries then making
them unsigned so that it could use an unsigned comparision.  It did
this even on the paths which were trivial to give results for, such
as the sign bit of the LHS being set while RHS was not set.

This changes the logic to return out immediately in the trivial cases,
and use an unsigned comparison in the remaining cases.  But this time,
just use the unsigned comparison directly without creating any temporaries.

This works because, for example:
  true = (-2 slt -1) = (0xFE ult 0xFF)

Also added some tests explicitly for slt with APInt's larger than 64-bits
so that this new code is tested.

Using the memory for 'opt -O2 verify-uselistorder.lto.opt.bc -o opt.bc'
(see r236629 for details), this reduces the number of allocations from
26.8M to 23.9M.

llvm-svn: 270881

Summary:
The patch contains the parsing and sema support for the `to` clause. 

Patch based on the original post by Kelvin Li.

Reviewers: carlo.bertolli, hfinkel, kkwli0, arpith-jacob, ABataev

Subscribers: caomhin, cfe-commits

Differential Revision: http://reviews.llvm.org/D18597

llvm-svn: 270880

The memory location that corresponds to a volatile operation is very
special.  They are observed by the machine in ways which we cannot
reason about.

Differential Revision: http://reviews.llvm.org/D20555

llvm-svn: 270879

Summary:
This patch is to add parsing and sema support for `target update` directive. Support for the `to` and `from` clauses will be added by a different patch.  This patch also adds support for other clauses that are already implemented upstream and apply to `target update`, e.g. `device` and `if`.

This patch is based on the original post by Kelvin Li.

Reviewers: hfinkel, carlo.bertolli, kkwli0, arpith-jacob, ABataev

Subscribers: caomhin, cfe-commits

Differential Revision: http://reviews.llvm.org/D15944

llvm-svn: 270878

Fixes build error on windows where MSVC does not
support list initialization inside member initializer list.

llvm-svn: 270877

llvm-svn: 270876

llvm-svn: 270875