llvm-svn: 284806

llvm-svn: 284805

llvm-svn: 284804

In-memory ELF object files created here are consumed immediately,
so as long as the generated files are syntactically correct, we don't
care about the details.

llvm-svn: 284803

llvm-svn: 284790

Now that only one non-member function is exported from ELFCreator.h.
All the details are handled internally in ELFCreator.cpp file.

llvm-svn: 284786

This is needed for the following case (OpenCL example):
  __global int Var = 0; 
  __global int* Ptr[] = {&Var}; 
  ...

Differential Revision: https://reviews.llvm.org/D25815

llvm-svn: 284764

llvm-svn: 284758

llvm-svn: 284751

[ELF][MIPS] Separate calculation of MIPS GOT index and offset of the corresponding part of the GOT. NFC

MIPS GOT consists of some parts: local, global, TLS entries. This change
separates calculation of MIPS GOT index and offset of the corresponding
part of the GOT. That makes code a bit clear and allow to extend number
of parts in the future.

llvm-svn: 284750

Builds were failing with:

  InputSection.h(139): error C2338: SectionPiece is too big

because MSVC does record layout differently, probably not packing the
'OutputOff' and 'Live' bitfields because their types are of different
size. Using size_t for 'Live' seems to fix it.

llvm-svn: 284740

llvm-svn: 284739

We allocate a lot of these when linking debug info. This speeds up the
link of debug programs by 1% to 2%.

llvm-svn: 284716

    
The R_ARM_PREL31 and R_ARM_NONE relocations should not be faulted in
shared libraries. In the case of R_ARM_NONE, we have moved the TLS
relaxation hint instruction to R_TLSDESC_CALL so that R_HINT can be used
without side-effects. In the case of R_ARM_PREL31 we permit it to be used
against PLT entries as the personality routines are imported when used in
shared libraries.

Differential Revision: https://reviews.llvm.org/D25721

llvm-svn: 284710

This script below shouldn't include file and program headers
to PT_LOAD segment, because it doesn't have PHDRS and FILEHDR
attributes:

PHDRS { all PT_LOAD; }
SECTIONS { /* list of sections here */ }

Differential revision: https://reviews.llvm.org/D25774

llvm-svn: 284709

In this patch partial gdb_index section is created. 
For costructing the .gdb_index section 6 steps should be performed (details are in
SplitDebugInfo.cpp file header), this patch do first 3:

Creates proper section header.
Fills list of compilation units.
Types CU list area is not supposed to be supported, so it is ignored and therefore
can be treated as implemented either.

Differential revision: https://reviews.llvm.org/D24706

llvm-svn: 284708

llvm-svn: 284705

Also replace std::copy with memcpy because in other places we are
using memcpy.

llvm-svn: 284700

llvm-svn: 284699

llvm-svn: 284697

This member is used only by LinkerDriver, so move it to LinkerDriver.

llvm-svn: 284696

llvm-svn: 284695

llvm-svn: 284694

-format=<foo>, -format <foo> and -b <foo> are all the same.
Previous code was intended to produce an error message with the
same spelling as given from the command line, but it actually
always printed out this string: "unknown -format= value:".
This is probably more confusing than "unknown -format value:".
So I changed the message.

llvm-svn: 284693

llvm-svn: 284692

llvm-svn: 284687

Use size_t instead of ELFT::uint for the string table offset. If the
linker is built 32-bit, it can't write an output file larger than 2GB.
Other code in this area uses size_t as well.

llvm-svn: 284680

Previously, we were checking the existence of an entry symbol
too early. It was done before the linker script processor creates
symbols defined in scripts. Fixes bug 30743.

llvm-svn: 284676

llvm-svn: 284675

llvm-svn: 284670

We don't gc them anyway, so just use an early return in Enqueue.

llvm-svn: 284663

Fixes bug 30741.

llvm-svn: 284662

llvm-svn: 284641

This is what other linkers and clang driver do.

Differential Revision: https://reviews.llvm.org/D25780

llvm-svn: 284634

Other error messages don't end with ".".

llvm-svn: 284625

llvm-svn: 284614

Linker scripts may specify PHDRS, but not specify section to
segment assignments, i.e:

PHDRS { seg PT_LOAD; }
SECTIONS { 
  .sec1 {} : seg
  .sec2 {} 
}

In such case linker should still choose some segment for .sec2 section.
This patch will add .sec2 to previously opened segments (seg) or to the 
very first PT_LOAD segment, if no section-to-segment assignments has been
made

Differential revision: https://reviews.llvm.org/D24795

llvm-svn: 284600

We were already doing it for strings. This matches the behavior of
bfd and gold.

llvm-svn: 284598

Even with the hash table cache, binary search was still pretty
hot. This can be made even faster with prefetching.

Idea from http://cglab.ca/~morin/misc/arraylayout-v2/

I will suggest moving this to llvm.

llvm-svn: 284594

Differential revision: https://reviews.llvm.org/D25729

llvm-svn: 284575