NFC, just makes it easier to access from non templated code.

llvm-svn: 309152

Was discussed in D35797 thread.

llvm-svn: 309096

Previously we handled this option implicitly, only
for infering unresolved symbols handling policy.

ld man says: "--noinhibit-exec Retain the executable
output file whenever it is still usable",
and we may want to handle other cases too.

Differential revision: https://reviews.llvm.org/D35793

llvm-svn: 309091

This is PR30422,
previously LLD did not render all option aliases in --help.
With this patch it will.

Differential revision: https://reviews.llvm.org/D35477

llvm-svn: 309089

Since the flag is ignored anyway, it doesn't matter whether
it is an alias or not.

llvm-svn: 309055

llvm-svn: 309053

llvm-svn: 309051

These can be referenced with __start_/__stop_ symbols. I will try to make
this more precise in a followup patch.

llvm-svn: 309048

This is PR33714.

Previously for each input section offset of memory region
was incremented on a size of output section.

That resulted in a wrong error message saying about
overflow. Patch fixes that.

Differential revision: https://reviews.llvm.org/D35803

llvm-svn: 308955

llvm-svn: 308939

If user requested section alignment is greater than MaxPageSize, propagate it to segment headers correctly.

Differential Revision: https://reviews.llvm.org/D35813

llvm-svn: 308930

Follow-up to r308915 suggested by Rafael and Peter.

llvm-svn: 308920

We do this emitting a section for every function when LTO is used.
Fixes PR33888.

Differential Revision:  https://reviews.llvm.org/D35809

llvm-svn: 308915

llvm-svn: 308812

llvm-svn: 308809

Eq helper allows to define `XXX` and `XXX=` options forms easily.
Patch adds testcases for few aliases.

Differential revision: https://reviews.llvm.org/D35619

llvm-svn: 308752

Differential Revision: https://reviews.llvm.org/D35537

llvm-svn: 308728

This method is no longer being used anywhere.

Differential Revision: https://reviews.llvm.org/D35706

llvm-svn: 308706

Also add the test cases for the addition and subtraction both for
the relative and absolute case.

Differential Revision: https://reviews.llvm.org/D35346

llvm-svn: 308692

We were not looking at Repl and so thinking there was no output
section associated with the merged symbol. Because of that it was
produced as absolute.

This was found by an internal round of testing.

llvm-svn: 308681

SHF_GROUP flag should have been removed when the control reaches here
because InputSectionBase turns the flag off. So this code should be
redundant.

llvm-svn: 308680

Summary:
If the linker is invoked with `--chroot /foo` and `/bar/baz.o`, it
tries to read the file from `/foo/bar/baz.o`. This feature is useful
when you are dealing with files created by the --reproduce option.

Reviewers: grimar

Subscribers: llvm-commits, emaste

Differential Revision: https://reviews.llvm.org/D35517

llvm-svn: 308646

With that in place we can use lld's own infrastructure for the low
level detail of dwarf parsing.

With this we don't decompress sections twice, we don't scan all
realocations and even with this simplistic implementation linking
clang with gdb index goes from 34.09 seconds to 20.80 seconds.

llvm-svn: 308544

llvm-svn: 308529

llvm-svn: 308526

llvm-svn: 308523

In this way, we don't need to know which options have aliases.

llvm-svn: 308519

In addition this includes a change to prefer symbols with a default
version @@ over unversioned symbols.

Original commit message:

[ELF] - Handle symbols with default version early.

This fixes last testcase provided in PR28414.
In short issue is next: when we had X@@Version symbol in object A,
we did not resolve it to X early. Then when in another object B
we had reference to undefined X, symbol X from archive was fetched.
Since both archive and object A contains another symbol Z, duplicate
symbol definition was triggered as a result.

Correct behavior is to use X@@Version from object A instead and do not fetch
any symbols from archive.

Differential revision: https://reviews.llvm.org/D35059

llvm-svn: 308492

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

llvm-svn: 308300

llvm-svn: 308297

This reverts commit r307364 because that change is likely to have
caused https://bugs.llvm.org/show_bug.cgi?id=33820.

llvm-svn: 308239

The comment at the top of compareByFilePosition indicates that it relies
on stable_sort to preserve the order of synthetic sections. We were
using sort instead of stable_sort, however, leading to incorrect
synthetic section ordering.

Differential Revision: https://reviews.llvm.org/D35473

llvm-svn: 308207

In preparation for range extension thunks introduce a function that will
check whether a branch identified by a relocation type at a source address
can reach a destination.

For targets where range extension thunks are not supported the function will
return true as it is not expected that branches are out of range. An
implementation has been provided for ARM.

Differential Revision: https://reviews.llvm.org/D34690

llvm-svn: 308188

Funny but we list it as ignored for about 1.5 years atm,
though LLD started to support version script really long time ago.

llvm-svn: 308170

This is PR33766.

-F name
--filter=name
When creating an ELF shared object, set the internal DT_FILTER field to the specified name. This tells the dynamic linker that the symbol table of the shared object which is being created should be used as a filter on the symbol table of the shared object name.

If you later link a program against this filter object, then, when you run the program, the dynamic linker will see the DT_FILTER field. The dynamic linker will resolve symbols according to the symbol table of the filter object as usual, but it will actually link to the definitions found in the shared object name. Thus the filter object can be used to select a subset of the symbols provided by the object name.
(https://linux.die.net/man/1/ld).

Shared Objects as Filters:
https://docs.oracle.com/cd/E19683-01/817-3677/chapter4-31738/index.html

Differential revision: https://reviews.llvm.org/D35352

llvm-svn: 308167

This code runs after clearOutputSections.

llvm-svn: 308066

llvm-svn: 308057

NFC, just makes the OutputSectionCommand available.

llvm-svn: 308056

In filling the .got sections, InputSection::OutSecOff was added twice
when finding the position to apply a relocation: first time in
InputSection::writeTo() and then in SectionBase::getOffset().

Differential revision: https://reviews.llvm.org/D34232

llvm-svn: 308003