Preserve the actual library name as provided by the user.  This is
required to properly replicate link's behaviour about the module import
name handling.  This requires an associated change to lld for updating
the tests for the proper behaviour for the import library module name
handling in various cases.

Associated tests will be part of the lld change.

llvm-svn: 308406

Summary: Currently, when GVN creates a load and when InstCombine creates a new store for unreachable Load, the DebugLoc info gets lost.

Reviewers: dberlin, davide, aprantl

Reviewed By: aprantl

Subscribers: davide, llvm-commits

Differential Revision: https://reviews.llvm.org/D34639

llvm-svn: 308404

Summary: Based off of D35399

Reviewers: pollydev, llvm-commits, bollu, grosser

Reviewed By: grosser

Tags: #polly

Contributed-by: Tarun Ranjendran

Differential Revision: https://reviews.llvm.org/D35596

llvm-svn: 308403

I noticed that when I use "-analyze-config" option in scan-build-py, it
behaves differently from original perl based scan-build.

For example, command:

$ scan-build -analyzer-config ipa=basic-inlining make

Will work without any issues on perl version of scan-build. But on
scan-build-py it will throw an error message "error reading
'ipa=basic-inlining'".

After debugging, it turns out that the scan-build-py does not put
"-analyzer-config" flag in front of the analyzer config flags (in this
case is the "ipa=basic-inlining") in the final clang command line. This
patch fixes this issue.

Patch by Haowei Wu

Differential Revision: https://reviews.llvm.org/D34489

llvm-svn: 308401

<rdar://problem/33357889>
https://bugs.llvm.org/show_bug.cgi?id=33822

Differential Revision: https://reviews.llvm.org/D35583

llvm-svn: 308399

DIImportedEntity has a line number, but not a file field. To determine
the decl_line/decl_file we combine the line number from the
DIImportedEntity with the file from the DIImportedEntity's scope. This
does not work correctly when the parent scope is a DINamespace or a
DIModule, both of which do not have a source file.

This patch adds a file field to DIImportedEntity to unambiguously
identify the source location of the using/import declaration.  Most
testcase updates are mechanical, the interesting one is the removal of
the FIXME in test/DebugInfo/Generic/namespace.ll.

This fixes PR33822. See https://bugs.llvm.org/show_bug.cgi?id=33822
for more context.

<rdar://problem/33357889>
https://bugs.llvm.org/show_bug.cgi?id=33822

Differential Revision: https://reviews.llvm.org/D35583

llvm-svn: 308398

Previously it was uninitialized and thus always defaulted to "<stdin>".
This is mostly a cosmetic change that helps making the debug info more readable.

llvm-svn: 308397

Accept and ignore --wide/-W. In GNU readelf this switch is
necessary to get the output format that's consistent between
32-bit and 64-bit targets. llvm-readobj always produces that
output format.

Patch by Roland McGrath

Differential Revision: https://reviews.llvm.org/D33873

llvm-svn: 308396

This reverts commit c8095ce74118dee8544b0f1ffaba8f46aa10215c.

Reverted due to some buildbot timeouts, perhaps due to 10.11 issues.

llvm-svn: 308395

This reverts commit 7e46d78d47832f03ce42adcf56417fbfd47cbaad.

llvm-svn: 308394

CMake target "check-lldb" runs the lldb dotest.py suite, but doesn't
collect the results in a usable format. In adding the arguments
necessary to collect these results, I found some minor bugs in CMake
that prevented dotest overrides from being used. This patch fixes them.

<rdar://problem/33389717> cmake build needs to run tests AND collect results

llvm-svn: 308393

In GNU readelf, the short option for --sections is upper-case -S.

Note that GNU uses lower-case -s to mean --symbols, while LLVM
uses -s to mean --sections and -t to mean --symbols (-t has yet a
different meaning in GNU). So command-line uses with -S can now
be compatible, but uses with -s or -t are still incompatible.

Patch by Roland McGrath

Differential Revision: https://reviews.llvm.org/D33872

llvm-svn: 308392

The real issue was the missing explicit versions.

llvm-svn: 308391

Fuchsia uses read-only .dynamic section.

Differential Revision: https://reviews.llvm.org/D35582

llvm-svn: 308390

This would have found the issue.

llvm-svn: 308389

Add fusion of AES operations.

llvm-svn: 308388

  Summary:
  ASan determines the stack layout from alloca instructions. Since
arguments marked as "byval" do not have an explicit alloca instruction, ASan
does not produce red zones for them. This commit produces an explicit alloca
instruction and copies the byval argument into the allocated memory so that red
zones are produced.

  Submitted on behalf of @morehouse (Matt Morehouse)

  Reviewers: eugenis, vitalybuka

  Reviewed By: eugenis

  Subscribers: hiraditya, llvm-commits

  Differential Revision: https://reviews.llvm.org/D34789

llvm-svn: 308387

Ensure that an extension other than .dll, .exe is preserved as per the
behaviour of link.

llvm-svn: 308386

llvm-svn: 308385

When I originally wrote this code, I neglected the fact that the import
library may be created for executables.  This name is not the name of
the DLL, but rather the name for the imported module.  It will be
embedded into the IAT/ILT reference.  Rename it to make it more obvious.
NFC.

llvm-svn: 308384

When given an extension as part of the `library` directive in a def
file, the extension is preserved/honoured by link/lib.  Behave similarly
when parsing the def file.  This requires checking if a native extension
is provided as a keyword parameter.  If no extension is present, append
a standard `.dll` or `.exe` extension.

This is best tested via lld, and I will add tests there as a follow up.

llvm-svn: 308383

This is PR33821.

What we really want to check in here is if the output section was
created, not if the command was empty.

llvm-svn: 308382

This matches the behavior of libc++abi and libc++ and ensures that
we get a working toolchain when building libunwind as part of LLVM.

Differential Revision: https://reviews.llvm.org/D34375

llvm-svn: 308380

A PE COFF spec compliant import library generator.
Intended to be used with mingw-w64.

Supports:
PE COFF spec (section 8, Import Library Format)
PE COFF spec (Aux Format 3: Weak Externals)

Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D29892

This reapplies rL308329, which was reverted in rL308374

llvm-svn: 308379

These changes enable proper configuration of LLDB targeting iOS.

llvm-svn: 308378

This refactoring changes two significant things about how the debugserver build system works:

(1) debugserver will include all appropriate architecture support, so we can now build arm or ppc debugservers
(2) debugserver can be built by itself, so you don't have to configure all of LLDB in order to generate debugserver.

llvm-svn: 308377

Since we set the minimum required version elsewhere to be higher this actually has meaningful good impact.

llvm-svn: 308376

We only need to add this entry once for it to be fixed up.

llvm-svn: 308375

This reverts commit r308329 because it broke buildbots.

llvm-svn: 308374

llvm-svn: 308360

This is needed for runtimes build to work on Darwin.

Differential Revision: https://reviews.llvm.org/D35343

llvm-svn: 308359

Reviewers: compnerd, rnk, ruiu, mstorsjo

Reviewed By: mstorsjo

Subscribers: aemerson, javed.absar, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D35531

llvm-svn: 308358

Convert attribute 'target' parsing from a 'pair' to a 'struct' to make further 
improvements easier

The attribute 'target' parse function previously returned a pair. Convert 
this to a 'pair' in order to add more functionality, and improve usability.

Differential Revision: https://reviews.llvm.org/D35574

llvm-svn: 308357

Previously, this was awkwardly split up between SemaExpr.cpp.

llvm-svn: 308356

Summary:
The kmp_os.h header is defining the `PAGE_SIZE` macro unconditionally,
even while it is only used directly after its definition, for the
Windows implementation of the `KMP_GET_PAGE_SIZE()` macro.

On at least FreeBSD, but likely all other BSDs too, this macro conflicts
with the one defined in system headers, so remove it, since nothing else
uses it.  Make all Unixes use `getpagesize()` instead, and use
`GetSystemInfo()` for the Windows case.

Reviewers: jlpeyton, jcownie, emaste, AndreyChurbanov

Reviewed By: AndreyChurbanov

Subscribers: AndreyChurbanov, hfinkel, zturner

Differential Revision: https://reviews.llvm.org/D35072

llvm-svn: 308355

Summary: This patch improves error detection in deleteEdge. It asserts that the edge doesn't exist in the CFG and that DomTree knew about this edge before.

Reviewers: dberlin, grosser, brzycki, sanjoy

Reviewed By: dberlin

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D35571

llvm-svn: 308354

Summary:
Calling exit() from an atexit handler is undefined behavior.
On Linux, it's unavoidable, since we cannot intercept exit (_exit isn't called
if a user program uses return instead of exit()), and I haven't
seen it cause issues regardless.

However, on Darwin, I have a fairly complex internal test that hangs roughly
once in every 300 runs after leak reporting finishes, which is resolved with
this patch, and is presumably due to the undefined behavior (since the Die() is
the only thing that happens after the end of leak reporting).

In addition, this is the way TSan works as well, where an atexit handler+Die()
is used on Linux, and an _exit() interceptor is used on Darwin. I'm not sure if it's
intentionally structured that way in TSan, since TSan sets up the atexit handler and the
_exit() interceptor on both platforms, but I have observed that on Darwin, only the
_exit() interceptor is used, and on Linux the atexit handler is used.

There is some additional related discussion here: https://reviews.llvm.org/D35085

Reviewers: alekseyshl, kubamracek

Subscribers: eugenis, vsk, llvm-commits

Differential Revision: https://reviews.llvm.org/D35513

llvm-svn: 308353

Parsing/sema analysis of the 'task_reduction' clause.

llvm-svn: 308352

We do not have GOMP interface support for taskloop yet.

llvm-svn: 308351

Re-recommiting after landing DAG extension-crash fix.

Recommiting after adding check to avoid miscomputing alias information
on addresses of the same base but different subindices.

Memory accesses offset from frame indices may alias, e.g., we
may merge write from function arguments passed on the stack when they
are contiguous. As a result, when checking aliasing, we consider the
underlying frame index's offset from the stack pointer.

Static allocs are realized as stack objects in SelectionDAG, but its
offset is not set until post-DAG causing DAGCombiner's alias check to
consider access to static allocas to frequently alias. Modify isAlias
to consider access between static allocas and access from other frame
objects to be considered aliasing.

Many test changes are included here. Most are fixes for tests which
indirectly relied on our aliasing ability and needed to be modified to
preserve their original intent.

The remaining tests have minor improvements due to relaxed
ordering. The exception is CodeGen/X86/2011-10-19-widen_vselect.ll
which has a minor degradation dispite though the pre-legalized DAG is
improved.

Reviewers: rnk, mkuper, jonpa, hfinkel, uweigand

Reviewed By: rnk

Subscribers: sdardis, nemanjai, javed.absar, llvm-commits

Differential Revision: https://reviews.llvm.org/D33345

llvm-svn: 308350