rL245171 exposed a hole in InstSimplify that manifested in a strange way in PR28466:
https://llvm.org/bugs/show_bug.cgi?id=28466

It's possible to use trunc + icmp sgt/slt in place of an and + icmp eq/ne, so we need to
recognize that pattern to eliminate selects that are choosing between some value and some
bitmasked version of that value.

Note that there is significant room for improvement (refactoring) and enhancement (more
patterns, possibly in InstCombine rather than here).

Differential Revision: https://reviews.llvm.org/D22537

llvm-svn: 276341

llvm-svn: 276340

This patch moves the update instruction for vectorized integer induction phi
nodes to the end of the latch block. This ensures consistent placement of all
induction updates across all the kinds of int inductions we create (scalar,
splat vector, or vector phi).

Differential Revision: https://reviews.llvm.org/D22416

llvm-svn: 276339

I wonder what is the most idiomatic way to write this.

llvm-svn: 276338

Summary:
Some instructions can only be copied if the relative offset is adjusted.

This patch adds support for two common instruction.
It's quite common to have a indirect load in the prologue 
(loading the security cookie).

Reviewers: rnk

Subscribers: llvm-commits, wang0109, chrisha

Differential Revision: https://reviews.llvm.org/D22647

llvm-svn: 276336

llvm-svn: 276335

std::numeric_limits<int64_t>::max() is not constexpr in VC 2013 headers,
and Clang complains that it isn't. MSVC 2013 itself is emitting a
dynamic initializer for this thing. Instead, use an enum.

llvm-svn: 276334

Summary:
This patch fixes cross-architecture compilation,
by allowing flags like -target and --sysroot to be set for
architecture testing and compilation.

Reviewers: tberghammer, srhines, danalbert, beanz, compnerd

Subscribers: tberghammer, llvm-commits, danalbert

Differential Revision: https://reviews.llvm.org/D22415

llvm-svn: 276333

The OOM test should really only run on 32-bits, since it's hard to OOM
on x64.

The operator_array_new_with_dtor_left_oob tests need to account for the
larger array cookie on x64 (8 bytes instead of 4).

Use -std=c++14 in use-after-scope-capture.cc to avoid errors in the MSVC
2015 STL on Windows. The default there is C++14 anyway.

llvm-svn: 276332

Having the added `\brief` made doxygen interpret it as the summary for
the `llvm` namespace (visible at:
http://llvm.org/doxygen/namespaces.html).

llvm-svn: 276331

Move needsComdatForCounter() to lib/ProfileData/InstrProf.cpp from
lib/Transforms/Instrumentation/InstrProfiling.cpp to make is available for
other files.

Differential Revision: https://reviews.llvm.org/D22643

llvm-svn: 276330

Not all relocations from a .eh_frame that point to an executable
section should be ignored. In particular, the relocation finding the
personality function should not.

This is a reduction from trying to bootstrap a static lld on linux.

llvm-svn: 276329

llvm-svn: 276328

Also remove the needless static that was using them.

llvm-svn: 276327

llvm-svn: 276326

Given that other proposals are making their way through, it's better if we
specify what GitHub proposal this is, in case there are others that also
involve GitHub, but not sub-modules.

llvm-svn: 276325

Summary:
This patch is fixing running interception unittests for memcpy/memmove on
windows 64.

Reviewers: rnk

Subscribers: llvm-commits, wang0109, kubabrecka, chrisha

Differential Revision: https://reviews.llvm.org/D22641

llvm-svn: 276324

It is called basic because:

CONSTANT expression can refer to COMMONPAGESIZE and MAXPAGESIZE.
This sizes are usually different and used for possible optimization of
memory consumption. 
More details are here: https://sourceware.org/ml/binutils/2002-02/msg00265.html
We currently do not support this optimization, so both CONSTANT(MAXPAGESIZE)
and CONSTANT(COMMONPAGESIZE) just return Target->PageSize value.

DATA_SEGMENT_ALIGN and DATA_SEGMENT_END are used as a part of opt.
The latter one is just ignored now.
According to documentation DATA_SEGMENT_ALIGN has 2 possible
calculation, but since we do not support mentioned opt - it 
is always calculated now as (ALIGN(MAXPAGESIZE) + (. & (MAXPAGESIZE - 1))).

In general this should work for now until we deside to support this opt.

Differential revision: https://reviews.llvm.org/D19663

llvm-svn: 276323

llvm-svn: 276322

llvm-svn: 276321

This reverts commit r276316.

llvm-svn: 276320

llvm-svn: 276319

[sanitizer] allocator: remove kPopulateSize and only use SizeClassMap::MaxCached; ensure that TransferBatch size is a power of two, refactor TransferBatch creation/destruction into separate functions.

llvm-svn: 276318

Another attempt at r276271, hopefully without breaking ModuleDebugInfo test.

llvm-svn: 276317

Summary:
The llvm.invariant.start and llvm.invariant.end intrinsics currently
support specifying invariant memory objects only in the default address space.

With this change, these intrinsics are overloaded for any adddress space for memory objects
and we can use these llvm invariant intrinsics in non-default address spaces.

Example: llvm.invariant.start.p1i8(i64 4, i8 addrspace(1)* %ptr)

This overloaded intrinsic is needed for representing final or invariant memory in managed languages.

Reviewers: tstellarAMD, reames, apilipenko

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D22519

llvm-svn: 276316

It doesn't appear to like this pattern:
  for (auto X : Xs)
    if (...) { ... }
    else ...;

We have heard anecdotes that range based for loops are implemented as a
token rewrite in MSVC's lexer, and that the most challenging part of the
rewrite is finding the end of the for loop. That makes sense, given that
it's a lexer.

llvm-svn: 276315

Make kStderrFd a macro to avoid dynamic initialization of the
report_file global. This actually causes a crash at runtime, because
ASan initializes before static initializers run.

Remove an unused variable in asan_win.cc.

llvm-svn: 276314

llvm-svn: 276313

Also, rename some of them for consistency and to follow current conventions.

llvm-svn: 276312

AppleClang can't compile the assignment expression.

llvm-svn: 276311

llvm-svn: 276310

The value I'd picked was correct, as per the recently published SG10 paper http://wg21.link/p0096r3

llvm-svn: 276309

This commit adds a generic SUB opcode to global-isel.

llvm-svn: 276308

Previously LLVM_HAS_GLOBAL_ISEL would directly get the value of
LLVM_BUILD_GLOBAL_ISEL. This could be any integer value and not just ON
and OFF. The problem is that lit.cfg was checking for ON to define that
global-isel was supported, thus if we were setting
LLVM_BUILD_GLOBAL_ISEL with an integer value, say 1, this test would
fail whereas we do build global-isel and want to test it.

llvm-svn: 276307

Previously LLVM_BUILD_GLOBAL_ISEL was a boolean variable and although,
this is strictly identical to an option, it did not convey the
information that the user may set it. Options are here for that.

llvm-svn: 276306

Group arithmetic operations, bitwise operations, and branch operations.

llvm-svn: 276305

Making smaller pieces out of some of these ~1000 line functions should make
it easier to incrementally upgrade them to handle vector types.

llvm-svn: 276304

llvm-svn: 276303

llvm-svn: 276302

llvm-svn: 276301