We no longer call reserveSpace more than once, so it can be merged with
its constructor.

llvm-svn: 314867

When reporting a symbol conflict, LLD parses the debug info to report
source location information. Sections have not been decompressed at this
point, so if an object file contains zlib compressed debug info, LLD
ends up passing this compressed debug info to the DWARF parser, which
causes debug info parsing failures and can trigger assertions in the
parser (as the test case demonstrates).

Decompress debug sections when constructing the LLDDwarfObj to avoid
this issue. This doesn't handle GNU-style compressed debug info sections
(.zdebug_*), which at present are simply ignored by LLDDwarfObj; those
can be done in a follow-up.

Differential Revision: https://reviews.llvm.org/D38491

llvm-svn: 314866

Fixes PR19741.

Differential revision: https://reviews.llvm.org/D38483

llvm-svn: 314865

This patch adds the newly standardized deduction guides
for std::pair, allowing it to work class template deduction.

llvm-svn: 314864

llvm-svn: 314863

llvm-svn: 314862

Fixes the test failure: temporary is now bound to std::string, tests
fully pass on Linux.

This reverts commit b36ee0924038e1d95ea74230c62d46e05f80587e.

llvm-svn: 314859

This function implements the three-way radix quicksort algorithm.
This patch simplifies the implementation by using MutableArrayRef.

llvm-svn: 314858

Summary:
After r308422 we defer optimizations that can destroy loop canonical forms to
LateSimplifyCFG. Running LateSimplifyCFG after expanding atomic operations
can exploit more control-flow opportunities.

Reviewers: mcrosier, t.p.northover, efriedma

Reviewed By: efriedma

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

Differential Revision: https://reviews.llvm.org/D38262

llvm-svn: 314857

llvm-svn: 314856

llvm-svn: 314855

* Turn off embedded compiler-rt builds in stage1
* Support generating Xcode toolchains from Stage2 build configurations

llvm-svn: 314854

llvm-svn: 314853

llvm-svn: 314852

r303188 removed all the uses of aliases for EABI functions from
compiler-rt, because some of them had mismatched calling conventions.
Obviously, we can't use aliases for functions which don't have the same
calling convention, but that's only an issue for floating-point
functions with the hardfloat ABI.  In other cases, the stubs increase
size and reduce performance for no benefit.

This patch adds back the aliases, with appropriate checks to make sure
they're only used in cases where the calling convention matches.

llvm-svn: 314851

They started passing again by the DT::eraseNode fix in r314847.

llvm-svn: 314850

Summary:
At present, several gtests in the lldb open source codebase are using
#include statements rooted at $(SOURCE_ROOT)/${LLDB_PROJECT_ROOT}.

This patch cleans up this directory/include structure for both CMake and
Xcode build systems.

rdar://problem/33835795

Reviewers: zturner, jingham, beanz

Reviewed By: beanz

Subscribers: emaste, lldb-commits, mgorny

Differential Revision: https://reviews.llvm.org/D36598

llvm-svn: 314849

llvm-svn: 314848

This patch makes DT::eraseNode mark DFSInfo as invalid.
Not marking it as invalid leads to DFS numbers getting corrupted
and failing VerifyDFSNumbers check.

This patch also makes children iterator const (NFC).

llvm-svn: 314847

Differential Revision: https://reviews.llvm.org/D38387

llvm-svn: 314846

This was dead when it landed in r252578. We have this functionality, if
not for stack probe calls, but for regular calls in
X86CallFrameOptimization.cpp.

llvm-svn: 314845

An archive looks like

<header>
<symbol table>
<tail>

The symbol table refers to offsets in the tail. A complication is that
we would like to support symbol tables that use 64 bit offsets if it
turns out that any of the offsets is too big.

This patch changes the archive writer to first compute the tail. We
cannot just compute one big StringRef since that would require reading
every member upfront, but we can represent it as a series of
StringRefs.

Having done that it is much easier to compute the symbol table and all
offsets are computed before it is written. With this if there is an
accounting problem it will show up with a regular symbol table, not
just when a 64 bit one is needed.

llvm-svn: 314844

llvm-svn: 314843

We have this comment in LinkerDriver::link

  After this, no new names except a few linker-synthesized ones
  will be added to the symbol table.

but that was not true because new symbols could be added by processing
the -u option.

llvm-svn: 314842

llvm-svn: 314841

llvm-svn: 314840

Both dbg.declare and dbg.value insertion had duplicate code for the two
overloads with different insertion point conventions.

llvm-svn: 314839

Suppress -Wmissing-braces warning when aggregate-initializing a struct with a single field that is itself an aggregate.

In C++, such initialization of std::array<T, N> types is guaranteed to work by
the standard, is completely idiomatic, and the "suggested" alternative from
Clang was technically invalid.

llvm-svn: 314838

Surprisingly, we have zero coverage for these patterns.

Many of these are handled in InstSimplify, but it's not obvious
what the rule for folding each case should be, so I've just
stamped out everything.

It should be possible to fold every case, but currently, we
miss these:

int ashr_slt(int x) {
  return (x >> 1) < 1; 
}

int ashr_sgt(int x) {
  return (x >> 1) > 0; 
}

https://godbolt.org/g/aB2hLE

llvm-svn: 314837

This commit does two things. Firstly, it cleans up some of the benefit
calculation wrt outlined functions and candidates. Secondly, it fixes an
off-by-one bug in the cost model which was caused by the benefit value of
an OutlinedFunction and Candidate differing by 1. It updates the remarks test
to reflect this change.

llvm-svn: 314836

Partially revert a previous change from commit: https://llvm.org/svn/llvm-project/llvm/trunk@314026
The previous change caused regressions on Power 9.

llvm-svn: 314835

Rather than hardcode the flag and check if the compiler supports it, use
the CMake property to get the right flag spelling for the compiler.
This makes it generally more portable.

llvm-svn: 314834

declaration.

Patch allows using of the `#pragma omp declare target`| `#pragma omp end
declare target` directives inside the structures if we need to mark as
declare target only some static members.

llvm-svn: 314833

SymbolFileDWARFDwp contains m_debug_cu_index_map which was previously 
initialized incorrectly: before m_debug_cu_index.parse 
is called m_debug_cu_index is empty, thus 
the map was not actually getting populated properly. 
This diff moves this step into a private helper method
and calls it after m_debug_cu_index.parse inside SymbolFileDWARFDwp::Create.

Test plan:

Build a toy test example 
main.cpp
clang -gsplit-dwarf -g -O0 main.cpp -o main.exe
llvm-dwp -e main.exe -o main.exe.dwp
Build LLDB with ENABLE_DEBUG_PRINTF set.
Run: lldb -- ./main.exe
Check that the indexes are now correct 
(before this change they were empty)
Check that debugging works 
(setting breakpoints, printing local variables (this was not working before))

Differential revision: http://reviews.llvm.org/D38492

llvm-svn: 314832

The test retain-release.m fails with this patch.

Differential Revision: https://reviews.llvm.org/D38487

llvm-svn: 314831

[InstCombine] Use isSignBitCheck to simplify an if statement. Directly create new sign bit compares instead of manipulating the constant. NFCI

Since we no longer had the direct constant compares, manipulating the constant seemeded less clear.

llvm-svn: 314830

Summary:
For the amdpal OS type:

We write an AMDGPU_PAL_METADATA record in the .note section in the ELF
(or as an assembler directive). It contains key=value pairs of 32 bit
ints. It is a merge of metadata from codegen of the shaders, and
metadata provided by the frontend as _amdgpu_pal_metadata IR metadata.
Where both sources have a key=value with the same key, the two values
are ORed together.

This .note record is part of the amdpal ABI and will be documented in
docs/AMDGPUUsage.rst in a future commit.

Eventually the amdpal OS type will stop generating the .AMDGPU.config
section once the frontend has safely moved over to using the .note
records above instead of .AMDGPU.config.

Reviewers: arsenm, nhaehnle, dstuttard

Subscribers: kzhuravl, wdng, yaxunl, llvm-commits, t-tye

Differential Revision: https://reviews.llvm.org/D37753

llvm-svn: 314829

instructions.

Differential revision: https://reviews.llvm.org/D38293

llvm-svn: 314828

llvm-svn: 314827

llvm-svn: 314826