Currently LLD reads the R_MIPS_HI16's addends in the `computeMipsAddend`
function, the R_MIPS_LO16's addends in both `computeMipsAddend` and
`getImplicitAddend` functions. This patch moves reading all addends to
the `getImplicitAddend` function. As a side effect it fixes a "paired"
HI16/LO16 addend calculation if "LO16" part of a pair is not found.

llvm-svn: 311711

llvm-svn: 311710

Fixes https://bugs.llvm.org/show_bug.cgi?id=34311

llvm-svn: 311682

Before this patch, lld printed out something like

  error: -O: number expected, but got

After this patch, it prints out the same error message like this:

  error: -O: number expected, but got ''

Fixes https://bugs.llvm.org/show_bug.cgi?id=34311

llvm-svn: 311681

Also remove unused include of raw_ostream.h

Differential Revision: https://reviews.llvm.org/D37048

llvm-svn: 311587

Currently, LLD checks whether there's enough space for headers by
checking if headers fit below the address of the first allocated
section. However, that's always thue if the binary doesn't start
at zero which means that LLD always emits a segment for headers,
even if no other sections belong to that segment.

This is a problem in cases when linker script is being used with a
non-zero start address when we don't want to make the headers visible
by not leaving enough space for them. This pattern is common in
embedded programming but doesn't work in LLD.

This patch changes the behavior of LLD in case when linker script
is being to match the behavior of BFD ld and gold, which is to only
place headers into a segment when they're covered by some output
section.

Differential Revision: https://reviews.llvm.org/D36256

llvm-svn: 311586

Previously up to 3 errors were reported at once,
with patch we always will report only one,
just like in other linker code.

Differential revision: https://reviews.llvm.org/D37015

llvm-svn: 311537

Code suggested by Rui Ueyama in PR34238 comments.

Previously LTO optimized away symbols referenced from linker script
because did not see that them are used from regular objects.

Patch adds such symbols as undefined earlier, before running LTO,
what sets IsUsedInRegularObj for them and fixes the issue.

Differential revision: https://reviews.llvm.org/D37009

llvm-svn: 311534

This reverts commit r311468 because it broke some CFI bots.

llvm-svn: 311497

Patch by Rafael Espíndola.

This is PR34053.

The implementation is a bit of a hack, given the precise location where
IsPreemtible is set, it cannot be used from
SymbolTable::handleAnonymousVersion.

I could add another method to SymbolTable if you think that would be
better.

Differential Revision: https://reviews.llvm.org/D36499

llvm-svn: 311468

This is PR33097.
Previously when doing relocatable link, all IR symbols were absent
in result object file. Patch makes external symbols to be exported.

Differential revision: https://reviews.llvm.org/D36957

llvm-svn: 311431

With fix: explicitly specify ouput format for hexdump tool call.

Original commit message:

[ELF] - Do not forget to fill last bytes of PT_LOADs with trap instructions.

Previously last 4 bytes of executable loads
were not filled with trap instructions,
patch fixes this bug.

Differential revision: https://reviews.llvm.org/D36262

llvm-svn: 311315

[ELF] - Revert r311310 "[ELF] - Do not forget to fill last bytes of PT_LOADs with trap instructions."

It broke BB:
http://lab.llvm.org:8011/builders/lld-x86_64-darwin13/builds/11792/steps/test_lld/logs/stdio

llvm-svn: 311314

[ELF] - Do not segfault when doing logical and/or operations on symbols that have no output sections.

Previously we would crash on samples from testcase,
because were trying to access zero pointer to output section.

Differential revision: https://reviews.llvm.org/D36145

llvm-svn: 311311

Previously last 4 bytes of executable loads
were not filled with trap instructions,
patch fixes this bug.

Differential revision: https://reviews.llvm.org/D36262

llvm-svn: 311310

I renamed corresponding classes in r309199 but forgot to rename enums
at the moment. Rename them now to make them consistent.

llvm-svn: 311214

Removed extraneous comment markers

llvm-svn: 311169

We would previously crash on next script:
MEMORY { name : ORIGIN = .; }

Patch fixes that.

Differential revision: https://reviews.llvm.org/D36138

llvm-svn: 311073

We had a lock to guard BAlloc from being used concurrently, but that
is not very easy to understand. This patch replaces it with a
std::unique_ptr.

llvm-svn: 311056

Also add a test. This fixes r310995 and PR34200.

llvm-svn: 310998

Clang passes this options to linker. We should ignore them,
anyways they are always enabled by default atm.

Fixes https://bugs.llvm.org/show_bug.cgi?id=34200.

llvm-svn: 310995

GdbIndexSection doesn't need lazy finalization because when an instance
of the class is created, we already know all debug info sections.
We can initialize the instnace in the ctor.

llvm-svn: 310931

llvm-svn: 310930

llvm-svn: 310929

This function doesn't seem to add value to the symbol table as
it is easy to write code without it.

llvm-svn: 310925

Also refactored the code a bit.

llvm-svn: 310886

A TODO is not a todo unless we really have to do it, but
they are not required at the moment.

llvm-svn: 310864

Attemp to fix BB.

Previously we ignored all --plugin-opt options, 
but now (after r310826) error out on non implemented ones.
This caused BB to fail:

http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/3405/steps/check-cfi-and-supported%20in%20gcc%20build/logs/stdio

llvm-svn: 310835

This is relative to PR30720.

Previously we ignored all --plugin-opt arguments.
Patch adds support for them.

Patch does not add any new LTO options,
and just implements mapping from --plugin-opt to existent ones.

Differential revision: https://reviews.llvm.org/D36227

llvm-svn: 310826

llvm-svn: 310757

llvm-svn: 310736

http://lab.llvm.org:8011/builders/lld-x86_64-darwin13/builds/11517/steps/build_Lld/logs/stdio

llvm-svn: 310705

This is PR33886,

previously we did not output common symbols to map,
patch fixes that.

Differential revision: https://reviews.llvm.org/D36466

llvm-svn: 310703

The start of a segment should not have a gap that needs trap
instructions.

llvm-svn: 310696

ResolvedReloc struct is always passed to a callback function and not
stored anywhere. That is, in effect, we use the struct to pack multiple
arguments to one argument, which doesn't make much sense. This patch
removes the struct and passes the members to the callback directly.

llvm-svn: 310620

Liveness is usually a notion of input sections, but this patch adds
"liveness" bit to common symbols because they don't belong to any
input section.

This patch is based on https://reviews.llvm.org/D36520

Differential Revision: https://reviews.llvm.org/D36546

llvm-svn: 310617

Summary: This small patch adds the support for ! operator in linker scripts. 

Reviewers: ruiu, rafael

Reviewed By: ruiu

Subscribers: meadori, grimar, emaste, llvm-commits

Differential Revision: https://reviews.llvm.org/D36451

llvm-svn: 310607

This is probably a small optimization, but the main motivation is
having a way of fixing pr34053 that doesn't require a hash lookup in
isPreempitible.

llvm-svn: 310602

This patch restricts following construction:

/DISCARD/ : { *(COMMON) }

Previously LLD would crash.

Differential revision: https://reviews.llvm.org/D36468

llvm-svn: 310554

--icf=none negates --icf=all.

llvm-svn: 310526