llvm-svn: 269987

isReturn() was returning different values with and without -g which led to
different code being generated. Change isFlagSettingInstruction to query
an instruction's effect on SR instead.

llvm-svn: 269986

[LoopUnrollAnalyzer] Take into account cost of instructions controlling branches, along with their operands.

Previously, we didn't add their and their operands cost, which could've
resulted in unrolling loops for no actual benefit.

llvm-svn: 269985

llvm-svn: 269983

Lazy binding is quite important for use case like a shared build of
llvm. Also, if someone wants to disable it, it is better done in the
compiler (disable plt generation).

The only reason to keep it is to make it easier to add a new
architecture. But it doesn't really help much as it is possible to start
with non lazy relocation and plt code but still let the generic part
create a dedicated .got.plt and .rela.plt.

llvm-svn: 269982

Summary:
Adds *fstat to the common interceptors.

Removes the now-duplicate fstat interceptor from msan/tsan
This adds fstat to asan/esan, which previously did not intercept it.

Resubmit of http://reviews.llvm.org/D20318 with ios build fixes.

Reviewers: eugenis, vitalybuka, aizatsky

Subscribers: zaks.anna, kcc, bruening, kubabrecka, srhines, danalbert, tberghammer

Differential Revision: http://reviews.llvm.org/D20350

llvm-svn: 269981

TestTopLevelExprs fails on arm and aarch64 linux similar to behaviour on android.
A bug exists here: llvm.org/pr27787. 

This patch marks xfail on arm and aarch64.

llvm-svn: 269980

llvm-svn: 269979

llvm-svn: 269977

llvm-svn: 269976

http://bb.pgr.jp/builders/msbuild-llvmclang-x64-msc19-DA/builds/553/steps/test-llvm/logs/LLVM%20%3A%3A%20ObjectYAML__MachO__load_commands.yaml

llvm-svn: 269975

llvm-svn: 269974

llvm-svn: 269973

Use signed division otherwise all back jumps fail the check
Fixes regression introduced in r269951

Differential Revision: http://reviews.llvm.org/D20380

llvm-svn: 269972

llvm-svn: 269971

llvm-svn: 269970

When looking for an available spill slot, the register scavenger would stop
after finding the first one with no register assigned to it. That slot may
have size and alignment that do not meet the requirements of the register
that is to be spilled. Instead, find an available slot that is the closest
in size and alignment to one that is needed to spill a register from RC.

Differential Revision: http://reviews.llvm.org/D20295

llvm-svn: 269969

instance method.

When diagnosing unimplemented class property, make sure we emit
a warning when we only see an instance method with the right selector.

Also warn when we only see a class method for an instance property.

rdar://26141719

llvm-svn: 269968

llvm-svn: 269967

llvm-svn: 269966

When you assign a shared_ptr, the deleter gets called and assigned. In this routine, the assignment happens inside a critical section, which could (potentially) lead to a deadlock, if the deleter did something wonky. Now we swap the old value with an (empty) temporary shared_ptr, and then let the temporary delete the old value when it goes out of scope (after the lock has been released).  This should fix PR#27724. Thanks to Hans Boehm for the bug report and the suggested fix.

llvm-svn: 269965

llvm-svn: 269964

llvm-svn: 269963

llvm-svn: 269962

Summary:
-fembed-bitcode was only checking for old style LTO flag (-flto) but not
considering the new -flto= style option. That makes clang output bitcode
embedded in bitcode object when using -flto= and -fembed-bitcode= together.
Now clang should output normal bitcode file when using LTO and ignores
-fembed-bitcode option.

Reviewers: joker.eph

Subscribers: joker.eph, cfe-commits

Differential Revision: http://reviews.llvm.org/D20374

llvm-svn: 269961

llvm-svn: 269957

This is used to find nested classes. For a nested name foo::bar::qux we
will first look up foo::bar::qux, then foo::bar, then foo unless we find
a result. This is used to support nested classes which are not part of
the index but can only be used if the header for the parent context is
included.

Differential Revision: http://reviews.llvm.org/D20372

llvm-svn: 269956

llvm-svn: 269955

llvm-svn: 269954

This re-applies r269845, r269846, and r269850 with an included fix for a crash reported by zturner.

llvm-svn: 269953

The result of the test was C::D(), not D::D().

Reviewers: cfe-commits, klimek

Differential Revision: http://reviews.llvm.org/D20356

llvm-svn: 269952

llvm-svn: 269951

We can chain bcnt instructions together, so
any width popcnt is pretty fast.

llvm-svn: 269950

with an additional fix to make RegAllocFast ignore undef physreg uses. It would
previously get confused about the "push %eax" instruction's use of eax. That
method for adjusting the stack pointer is used in X86FrameLowering::emitSPUpdate
as well, but since that runs after register-allocation, we didn't run into the
RegAllocFast issue before.

llvm-svn: 269949

For some reason an assert is now hit when a valid chain
is not returned, so return the entry chain.

llvm-svn: 269948

Summary:
dlopen and dlclose interception are broken when RUNPATH is used:
https://llvm.org/bugs/show_bug.cgi?id=27790

Reviewers: kutuzov.viktor.84, samsonov, dvyukov, eugenis, kcc

Subscribers: kcc, filcab, kubabrecka, compnerd, llvm-commits

Differential Revision: http://reviews.llvm.org/D20333

llvm-svn: 269947

This just clang formats and cleans comments in an area I am about to
post a patch for review.

llvm-svn: 269946

If the second pointer in a multi-pointer instruction is
a constant, we can replace the type.

llvm-svn: 269945

Fix minor bugs and uses of undef which break when
pointer related optimization passes are run.

llvm-svn: 269944

llvm-svn: 269943