llvm-svn: 298575

llvm-svn: 298571

Fixes https://bugs.llvm.org/show_bug.cgi?id=32307.

Differential Revision: https://reviews.llvm.org/D31255

llvm-svn: 298569

This is to improve compatibility with GNU Libtool that expect
/supported targets:.* elf/ in a message for the -help option.

Differential Revision: https://reviews.llvm.org/D31208

llvm-svn: 298568

Patch by Mark Kettenis.

llvm-svn: 298567

"Parallel" is the most important aspect of the functions,
so we shouldn't omit that.

llvm-svn: 298557

Previous output:

  $ ld.lld -version
  LLD 5.0.0

New output:

  $ ld.lld -version
  LLD 5.0.0 (compatible with GNU linkers)

Differential Revision: https://reviews.llvm.org/D31199

llvm-svn: 298532

This is a shorthand for Config->Wordsize == 8. So this is not strictly
necessary but seems handy. "Is 64 bit?" is easier to read than "Is
wordsize 8 byte?"

llvm-svn: 298463

LinkerScript used to be a template class, so we couldn't instantiate
that class in elf::link. We instantiated ScriptConfig class earlier
instead so that the linker script parser can store configurations to
the object.

Now that LinkerScript is not a template, it doesn't make sense to
separate ScriptConfig from LinkerScript. This patch merges them.

llvm-svn: 298457

llvm-svn: 298456

llvm-svn: 298447

This is a shorthand for `Config->IsLE ? support::little : support::big`.

llvm-svn: 298445

llvm-svn: 298403

llvm-svn: 298353

llvm-svn: 298351

llvm-svn: 298350

That finally should linux BB after r298345.

llvm-svn: 298349

Fix for linux build bot:
http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-ubuntu-fast/builds/8144/steps/build/logs/stdio

llvm-svn: 298348

llvm-svn: 298346

Patch moves Sections array to
InputFile (root class for input files).

That allows to detemplate GdbIndexSection.

Differential revision: https://reviews.llvm.org/D30976

llvm-svn: 298345

It is the only file type that needs it.

llvm-svn: 298323

The patch introduces two new relocations expressions R_MIPS_GOT_GP and
R_MIPS_GOT_GP_PC. The first one represents a current value of `_gp`
pointer and used to calculate relocations against the `__gnu_local_gp`
symbol. The second one represents the offset between the beginning of
the function and the `_gp` pointer's value.

There are two motivations for introducing new expressions:
- It's better to keep all non-trivial relocation calculations in the
  single place - `getRelocTargetVA` function.
- Relocations against both `_gp_disp` and `__gnu_local_gp` symbols
  depend on the `_gp` value. It's a magical value points to the "middle"
  of GOT. Now all relocations use a common `_gp` value. But in fact,
  under some conditions each input file might require its own `_gp`
  value. I'm going to implement it in the future patches. So it's
  better to make `MipsGotSection` responsible for calculation of
  the `_gp` value.

llvm-svn: 298306

llvm-svn: 298304

This continues detemplation process.

Detemplating MipsGotSection<ELFT> is helpfull because can
help to detemplate getRelocTargetVA. (one more change is required)
It opens road to detemplation of GotSection<ELFT> and probably
something else after that.

Differential revision: https://reviews.llvm.org/D31090

llvm-svn: 298272

Does not introduce anything new,
just performs detemplate, using methods we
already have.

Differential revision: https://reviews.llvm.org/D30935

llvm-svn: 298269

I don't foresee having to makes these functions any stricter or
fancier, so it probably makes sense to inline them.

llvm-svn: 298252

This would fix an initialized error found by msan. The error is not
showing after r298241, but it is not clear why.

llvm-svn: 298251

llvm-svn: 298244

llvm-svn: 298243

llvm-svn: 298242

Patch removes templated linkerscript class.

Unfortunately that required 2 additional static methods
findSymbol() and addRegularSymbol() because code
depends on Symtab<ELFT>::X

Differential revision: https://reviews.llvm.org/D30982

llvm-svn: 298241

llvm-svn: 298240

llvm-svn: 298230

We had a few Config member functions that returns configuration values.
For example, we had is64() which returns true if the target is 64-bit.
The return values of these functions are constant and never change.

This patch is to compute them only once to make it clear that they'll
never change.

llvm-svn: 298168

isLE() return true if the target is little-endian.
wordsize() returns 8 for 64-bit and 4 for 32-bit.

llvm-svn: 298167

ELF: Change check(Expected<T>, const Twine &) to call toString instead of converting to an error code.

llvm-svn: 298155

__start_xxx symbol keeps section xxx alive only if it is not
SHF_LINK_ORDER. Such sections can be used for user metadata, when
__start_xxx is used to iterate over section contents at runtime, and
the liveness is determined solely by the linked (associated) section.

This was earlier implemented in r294592, and broken in r296723.

Differential Revision: https://reviews.llvm.org/D30964

llvm-svn: 298154

recommend using llvm-ar when finding undefined references and empty archives

Summary:
When we perform LTO builds with a version of ar that does not
understand LLVM bitcode objects, we end up with undefined references,
because our archive files do not list the bitcode symbols in their
indices. The error messages do not make it clear what the real problem
is. This change adds a note that points out the likely problem and
solution. It is similar in spirit to r282633, but aims to avoid false
positives by only triggering when we see both undefined references and
archives without symbols in their indices.

Fixes PR32281.

Reviewers: davide, ruiu, tejohnson

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D31011

llvm-svn: 298124

To be consistent with other code, addresses post 
commit review comments.

llvm-svn: 298102

Handling & in particular is probably important because of its use in
aligning addresses.

llvm-svn: 298096