The main observation is that we never need both the filesize and the map size.
When mapping a slice of a file, it doesn't make sense to request a null
terminator and that would be the only case where the filesize would be used.

There are other cleanups that should be done in this area:

* A client should not have to pass the size (even an explicit -1) to say if
  it wants a null terminator or not, so we should probably swap the argument
  order.
* The default should be to not require a null terminator. Very few clients
  require this, but many end up asking for it just because it is the default.

llvm-svn: 186984

llvm-svn: 186887

Option aliases in option groups were previously disallowed by an assert.
As far as I can tell, there was no technical reason for this, and I would
like to be able to put cl.exe compatible options in their own group for Clang,
so let's change the assert.

llvm-svn: 186838

Previously, they were only built and run in the CMake build.

llvm-svn: 186756

llvm-svn: 186704

llvm-svn: 186676

The plan is to use it for clang and lld.

Major behavior changes:
- We can now parse UTF-16 files that have a byte order mark.
- PR16209: Don't drop backslashes on the floor if they don't escape
  anything.

The actual parsing loop was based on code from Clang's driver.cpp,
although it's been rewritten to track its state with control flow rather
than state variables.

Reviewers: hans

Differential Revision: http://llvm-reviews.chandlerc.com/D1170

llvm-svn: 186587

llvm-svn: 186561

We don't want cast and dyn_cast to work on temporaries. They don't extend
lifetime like a direct bind to a reference would, so they can introduce
hard to find bugs.

I added tests to make sure we don't regress this. Thanks to Eli Friedman for
noticing this and for his suggestions on how to test it.

llvm-svn: 186559

There were a couple of different loops that were not handling
'.' correctly in APFloat::convertFromHexadecimalString; these mistakes
could lead to assertion failures and incorrect rounding for overlong
hex float literals.

Fixes PR16643.

llvm-svn: 186539

This centralizes the handling of O_BINARY and opens the way for hiding more
differences (like how open behaves with directories).

llvm-svn: 186447

Differential Revision: http://llvm-reviews.chandlerc.com/D1149

llvm-svn: 186431

This is to support parsing UTF16 response files in LLVM/lib/Option for
lld and clang.

Reviewers: hans

Differential Revision: http://llvm-reviews.chandlerc.com/D1138

llvm-svn: 186426

llvm-svn: 186375

llvm-svn: 186372

llvm-svn: 186264

It is failing with

YAMLTest.cpp:38:   instantiated from here
YAMLTraits.h:226: error: 'llvm::yaml::MappingTraits<<unnamed>::BinaryHolder>::mapping' is not a valid template argument for type 'void (*)(llvm::yaml::IO&, <unnamed>::BinaryHolder&)' because function 'static void llvm::yaml::MappingTraits<<unnamed>::BinaryHolder>::mapping(llvm::yaml::IO&, <unnamed>::BinaryHolder&)' has not external linkage

llvm-svn: 186245

llvm-svn: 186123

A special case list can now specify categories for specific globals,
which can be used to instruct an instrumentation pass to treat certain
functions or global variables in a specific way, such as by omitting
certain aspects of instrumentation while keeping others, or informing
the instrumentation pass that a specific uninstrumentable function
has certain semantics, thus allowing the pass to instrument callers
according to those semantics.

For example, AddressSanitizer now uses the "init" category instead of
global-init prefixes for globals whose initializers should not be
instrumented, but which in all other respects should be instrumented.

The motivating use case is DataFlowSanitizer, which will have a
number of different categories for uninstrumentable functions, such
as "functional" which specifies that a function has pure functional
semantics, or "discard" which indicates that a function's return
value should not be labelled.

Differential Revision: http://llvm-reviews.chandlerc.com/D1092

llvm-svn: 185978

Differential Revision: http://llvm-reviews.chandlerc.com/D1091

llvm-svn: 185977

Previously, it would simply output nothing, but it should output an
empty string `""`.

llvm-svn: 185894

llvm-svn: 185834

llvm-svn: 185730

llvm-svn: 185719

Use SmallVectorImpl::iterator/const_iterator instead of SmallVector to avoid specifying the vector size.

llvm-svn: 185606

llvm-svn: 185443

llvm-svn: 185421

rdar://14323230

llvm-svn: 185397

Thename says it's an i32*, but it was actually creating another i8*

llvm-svn: 185239

- should resolve windows buildbot failure

llvm-svn: 185232

llvm-svn: 185226

- mistakenly used get_current_dir() linux function
- replaced with getcwd/_getcwd as appropriate for current platform

llvm-svn: 185225

Revising the MCJIT ObjectCache interface to allow subclasses to avoid retaining references to returned objects

llvm-svn: 185221

- lit tests verify that each line of input LLVM IR gets a !dbg node and a
  corresponding entry of metadata that contains the line number 
- unit tests verify that DebugIR works as advertised in the interface
- refactored some useful IR generation functionality from the MCJIT unit tests
  so it can be reused

llvm-svn: 185212

Allow a BlockFrequency to be divided by a non-zero BranchProbability
with saturating arithmetic. This will be used to compute the frequency
of a loop header given the probability of leaving the loop.

Our long division algorithm already saturates on overflow, so that was a
freebie.

llvm-svn: 185184

There are a few valid situation where we care about the structure inside a
directory, but not about the directory itself. A simple example is for unit
testing directory traversal.

PathV1 had a function like this, add one to V2 and port existing users of the
created temp file and delete it hack to using it.

llvm-svn: 185059

[APFloat] Added unittest for APFloat.divide that checks special cases, result categories, and result statuses.

llvm-svn: 185050

llvm-svn: 185045

[APFloat] Added unittest for APFloat.multiply that checks special cases, result categories, and result status.

llvm-svn: 185044

[APFloat] Added unittest for APFloat.subtract that checks special cases, result categories, and result status.

llvm-svn: 185043