metadata is the loop vectorizer.

See the documentation update for more info.

llvm-svn: 175060

[ASan] When re-executing the process on OS X, make sure we update the existing DYLD_INSERT_LIBRARIES correctly.
Previously ASan used to hang in an exec loop, because it failed to overwrite the env var value
(see https://code.google.com/p/address-sanitizer/issues/detail?id=159).

llvm-svn: 175059

via -print-after-all.

llvm-svn: 175058

This happens when there is both stack realignment and a dynamic alloca in the
function. If we overwrite %esi (rep;movsl uses fixed registers) we'll lose the
base pointer and the next register spill will write into oblivion.

Fixes PR15249 and unbreaks firefox on i386/freebsd. Mozilla uses dynamic allocas
and freebsd a 4 byte stack alignment.

llvm-svn: 175057

better memory range access functions (put only 1 event to trace) (Go)

llvm-svn: 175056

llvm-svn: 175055

llvm-svn: 175054

llvm-svn: 175053

Fix some comments.

llvm-svn: 175052

- clear ownership: the SpecificBumpPtrAllocator owns all StateNodes
- this allows us to simplify the memoization data structure into a
  std::set (FIXME: figure out whether we want to use a hash based
  data structure).
- introduces StateNode as recursive data structure, instead of using
  Edge and the Seen-map combined to drill through the graph
- using a count to stabilize the penalty instead of relying on the
  container
- pulled out a method to forward-apply states in the end

This leads to a ~40% runtime decrease on Nico's benchmark.

Main FiXME is that the parameter lists of some function get too long.
I'd vote for either pulling the Queue etc into the Formatter proper,
or creating an inner class just for the search algorithm.

llvm-svn: 175051

#cmakedefine does not behave the way I though it was.

llvm-svn: 175050

llvm-svn: 175049

llvm-svn: 175048

llvm-svn: 175047

llvm-svn: 175046

llvm-svn: 175045

llvm-svn: 175044

Prevent insertion of "vzeroupper" before call that preserves YMM registers, since a caller uses preserved registers across the call.

llvm-svn: 175043

Remove unnecessary condtional assignment. The next line ignores the result of the assignment with the same condition.

llvm-svn: 175042

llvm-svn: 175041

[msan] don't check shadow inside interceptors if we are inside symbolizer; add weak function __msan_default_options that overrides default options

llvm-svn: 175040

fix the mergeable string atom, when the target points to a symbol which is at a relative offset from the start of the .rodata section

llvm-svn: 175039

add merge strings option, this temporarily fixes the problem bringing up helloworld with glibc on x86_64

llvm-svn: 175038

llvm-svn: 175037

assembly.

llvm-svn: 175036

llvm-svn: 175035

llvm-svn: 175034

llvm-svn: 175033

thanks to David Blaike for pointing this out.

llvm-svn: 175032

llvm-svn: 175031

llvm-svn: 175030

No functionality change. Also add another cast test.

llvm-svn: 175029

Not all casts are correctly detected yet, but it helps in some cases.

llvm-svn: 175028

llvm-svn: 175027

Previously, we were handling only simple integer constants for globals and
the smattering of implicitly-valued expressions handled by Environment for
default arguments. Now, we can use any integer constant expression that
Clang can evaluate, in addition to everything we handled before.

PR15094 / <rdar://problem/12830437>

llvm-svn: 175026

No functionality change.

llvm-svn: 175025

llvm-svn: 175024

RegisterCoalescer used to depend on LiveDebugVariable. LDV removes DBG_VALUEs
without emitting them at the end.

We fix this by removing LDV from RegisterCoalescer. Also add an assertion to
make sure we call emitDebugValues if DBG_VALUEs are removed at
runOnMachineFunction.

rdar://problem/13183203
Reviewed by Andy & Jakob

llvm-svn: 175023

Part of rdar://13202662

llvm-svn: 175022

rdar://13202662

llvm-svn: 175021