Split out the logic to parse structure-like types into a separate
function, in an attempt to reduce the complexity of ParseTypeFromDWARF.
Inspired by discussion in https://reviews.llvm.org/D68130.
Differential Revision: https://reviews.llvm.org/D68422
llvm-svn: 373927
Since D68289, a couple of tests on linux started being extremely flaky.
All of them were doing name-based attaching and were failing because
they couldn't find an unambiguous process to attach to.
The patch above changed the process finding logic, so that failure to
find a process name does not constitute an error. This meant that a lot
more transient processes showed up in the process list during the test
suite run. Previously, these processes would not appear as they would be
gone by the time we went to read their executable name, arguments, etc.
Now, this alone should not cause an issue were it not for the fact that
we were considering a process with no name as if it matched by default
(even if we were explicitly searching for a process with a specified
name). This meant that any of the "transient" processes with no name
would make the name match ambiguous. That clearly seems like a bug to me
so I fix that.
llvm-svn: 373925
After changing the remark serialization, we now pass StringRefs to the
serializer. We should use StringRef for StringBlockVal, to avoid
creating temporary objects, which then cause StringBlockVal.Value to
point to invalid memory.
Reviewers: thegameg, anemet
Reviewed By: thegameg
Differential Revision: https://reviews.llvm.org/D68571
llvm-svn: 373923
Summary:
clang-format is incorrectly thinking the parameter parens are part of a cast operation, this is resulting in there sometimes being not space between the paren and the noexcept (and other keywords like volatile etc..)
```
void operator++(int) noexcept;
void operator++(int &) noexcept;
void operator delete(void *, std::size_t, const std::nothrow_t &)noexcept;
```
Reviewers: klimek, owenpan, mitchell-stellar
Reviewed By: mitchell-stellar
Subscribers: cfe-commits
Tags: #clang-format, #clang
Differential Revision: https://reviews.llvm.org/D68481
llvm-svn: 373922
Summary:
Before making a proposed change, ensure ClangFormat.cpp is fully clang-formatted,
no functional change just clang-formatting using the in tree .clang-format.
Reviewers: mitchell-stellar
Reviewed By: mitchell-stellar
Subscribers: Eugene.Zelenko, cfe-commits
Tags: #clang-format, #clang
Differential Revision: https://reviews.llvm.org/D68551
llvm-svn: 373921
The static analyzer is warning about potential null dereferences, but in these cases we should be able to use castAs<> directly and if not assert will fire for us.
llvm-svn: 373918
Summary:
`toString` generates a string representation of the stencil.
Patch by Harshal T. Lehri.
Reviewers: gribozavr
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D68574
llvm-svn: 373916
Previously ExtBinary profile format only supports compression using zlib for
profile symbol list. In this patch, we extend the compression support to any
section. User can select some or all of the sections to compress. In an
experiment, for a 45M profile in ExtBinary format, compressing name table
reduced its size to 24M, and compressing all the sections reduced its size
to 11M.
Differential Revision: https://reviews.llvm.org/D68253
llvm-svn: 373914
Add a --preserve-names option to tell the script not to replace IR names.
Sometimes tests want those names. For example if a test is looking for a
modification to an existing instruction we'll want to make the names.
Differential Revision: https://reviews.llvm.org/D68081
llvm-svn: 373912
The static analyzer is warning about potential null dereferences, but in these cases we should be able to use castAs<> directly and if not assert will fire for us.
llvm-svn: 373911
This ensures that frame-based unwinding will continue to work when
calling a noreturn function; there is not much use having the caller's
frame pointer saved if you don't also have the caller's program counter.
Patch by James Clarke.
Differential Revision: https://reviews.llvm.org/D68542
llvm-svn: 373907
J/JAL/JALX/JALS are absolute branches, but stay within the current
256 MB-aligned region, so we must include the high bits of the
instruction address when calculating the branch target.
Patch by James Clarke.
Differential Revision: https://reviews.llvm.org/D68548
llvm-svn: 373906
The static analyzer is warning about potential null dereferences, but in these cases we should be able to use castAs<> directly and if not assert will fire for us.
llvm-svn: 373905
The static analyzer is warning about potential null dereferences, but in these cases we should be able to use castAs<> directly and if not assert will fire for us.
llvm-svn: 373904
Earlier in the year intrinsics for lrint, llrint, lround and llround were
added to llvm. The constrained versions are now implemented here.
Reviewed by: andrew.w.kaylor, craig.topper, cameron.mcinally
Approved by: craig.topper
Differential Revision: https://reviews.llvm.org/D64746
llvm-svn: 373900
The CMake build uses "x86_64-pc-windows-msvc". The "-msvc" suffix is
important because e.g. clang/test/lit.cfg.py matches against the
suffix "windows-msvc" to compute the presence of the "ms-sdk" and
the absence of the "LP64" feature.
Differential Revision: https://reviews.llvm.org/D68572
llvm-svn: 373899
It broke MC/AsmParser/directive_ascii.s on all bots:
Assertion failed: (Index < Length && "Invalid index!"), function operator[],
file ../../llvm/include/llvm/ADT/StringRef.h, line 243.
llvm-svn: 373898
The GFX10-DENORM-STRICT checks were only passing by accident. Fix them
to make the test more robust in the face of scheduling or register
allocation changes.
llvm-svn: 373893
Summary:
This fixes cases like:
foo.h
class Undocumented{}
bar.h
// break an include cycle. we should refactor this!
class Undocumented;
Where the comment doesn't describe the class.
Note that a forward decl that is *visible to the definition* will still have
its doc comment used, by SymbolCollector: Merge isn't involved here.
Reviewers: ilya-biryukov
Subscribers: MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D68467
llvm-svn: 373892
Summary:
If the .symtab section is stripped from the binary it might be that
there's a .gnu_debugdata section which contains a smaller .symtab in
order to provide enough information to create a backtrace with function
names or to set and hit a breakpoint on a function name.
This change looks for a .gnu_debugdata section in the ELF object file.
The .gnu_debugdata section contains a xz-compressed ELF file with a
.symtab section inside. Symbols from that compressed .symtab section
are merged with the main object file's .dynsym symbols (if any).
In addition we always load the .dynsym even if there's a .symtab
section.
For example, the Fedora and RHEL operating systems strip their binaries
but keep a .gnu_debugdata section. While gdb already can read this
section, LLDB until this patch couldn't. To test this patch on a
Fedora or RHEL operating system, try to set a breakpoint on the "help"
symbol in the "zip" binary. Before this patch, only GDB can set this
breakpoint; now LLDB also can do so without installing extra debug
symbols:
lldb /usr/bin/zip -b -o "b help" -o "r" -o "bt" -- -h
The above line runs LLDB in batch mode and on the "/usr/bin/zip -h"
target:
(lldb) target create "/usr/bin/zip"
Current executable set to '/usr/bin/zip' (x86_64).
(lldb) settings set -- target.run-args "-h"
Before the program starts, we set a breakpoint on the "help" symbol:
(lldb) b help
Breakpoint 1: where = zip`help, address = 0x00000000004093b0
Once the program is run and has hit the breakpoint we ask for a
backtrace:
(lldb) r
Process 10073 stopped
* thread #1, name = 'zip', stop reason = breakpoint 1.1
frame #0: 0x00000000004093b0 zip`help
zip`help:
-> 0x4093b0 <+0>: pushq %r12
0x4093b2 <+2>: movq 0x2af5f(%rip), %rsi ; + 4056
0x4093b9 <+9>: movl $0x1, %edi
0x4093be <+14>: xorl %eax, %eax
Process 10073 launched: '/usr/bin/zip' (x86_64)
(lldb) bt
* thread #1, name = 'zip', stop reason = breakpoint 1.1
* frame #0: 0x00000000004093b0 zip`help
frame #1: 0x0000000000403970 zip`main + 3248
frame #2: 0x00007ffff7d8bf33 libc.so.6`__libc_start_main + 243
frame #3: 0x0000000000408cee zip`_start + 46
In order to support the .gnu_debugdata section, one has to have LZMA
development headers installed. The CMake section, that controls this
part looks for the LZMA headers and enables .gnu_debugdata support by
default if they are found; otherwise or if explicitly requested, the
minidebuginfo support is disabled.
GDB supports the "mini debuginfo" section .gnu_debugdata since v7.6
(2013).
Reviewers: espindola, labath, jankratochvil, alexshap
Reviewed By: labath
Subscribers: rnkovacs, wuzish, shafik, emaste, mgorny, arichardson, hiraditya, MaskRay, lldb-commits
Tags: #lldb, #llvm
Differential Revision: https://reviews.llvm.org/D66791
llvm-svn: 373891
This patch:
* Adds a llvm-readobj/llvm-readelf test file for SHT_LLVM_ADDRSIG sections. (we do not have any)
* Enables dumping of SHT_LLVM_ADDRSIG with --all.
* Changes the logic to report a warning instead of an error when something goes wrong during dumping
(allows to continue dumping SHT_LLVM_ADDRSIG and other sections on error).
* Refactors a piece of logic to a new toULEB128Array helper which might be used for GNU-style
dumping implementation.
Differential revision: https://reviews.llvm.org/D68383
llvm-svn: 373890
Summary:
Implement support for hexadecimal escape sequences to match how GNU 'as'
handles them. I.e., read all hexadecimal characters and truncate to the
lower 16 bits.
Reviewers: nickdesaulniers
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D68483
llvm-svn: 373888
These were added to the MS docs in
85b9b6967e
and are supposedly available in VS 2019 16.4 (though my 2019 Preview,
version 16.4.0-pre.1.0 don't seem to have them.)
llvm-svn: 373887
This makes it clear `ELF/**/*.cpp` files define things in the `lld::elf`
namespace and simplifies `elf::foo` to `foo`.
Reviewed By: atanasyan, grimar, ruiu
Differential Revision: https://reviews.llvm.org/D68323
llvm-svn: 373885
This allows us to delete `using namespace llvm::support::endian` and
simplify D68323. This change adds runtime config->endianness check but
the overhead should be negligible.
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D68561
llvm-svn: 373884
This reverts SVN r373833, as it caused a failed assert "Non-zero loop
cost expected" on building numerous projects, see PR43582 for details
and reproduction samples.
llvm-svn: 373882
Move the erasing and iterator updating inside to match the
other slow LEA function.
I've adapted code from optTwoAddrLEA and basically rebuilt the
implementation here. We do lose the kill flags now just like
optTwoAddrLEA. This runs late enough in the pipeline that
shouldn't really be a problem.
llvm-svn: 373877
Yitzhak Mandelbaum