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

This is a safeguard against data loss if the user specifies a directory
that is not a cache directory. Teach the existing cache pruning clients
to create files with appropriate names.

Differential Revision: https://reviews.llvm.org/D31109

llvm-svn: 298271

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

Since there is no way to produce the correct answer at runtime, it is
probably better to just err.

llvm-svn: 298094

Do not take in account the `Live` flag while collecting .reginfo, .MIPS.options,
and .MIPS.abiflags input sections to produce corresponding output sections.
These sections have information purpose and should be always produced per
ABI requirements.

llvm-svn: 298093

llvm-svn: 298091

llvm-svn: 298088

llvm-svn: 298087

With fix of next warning:
Writer.cpp:361:3: warning: suggest parentheses around assignment used as truth value [-Wparentheses]

Original commit message:

Patch reuses BssSection section to simplify creation of 
COMMON section.

Differential revision: https://reviews.llvm.org/D30690

llvm-svn: 298086

It segfaults.

llvm-svn: 298084

llvm-svn: 298083

Writer.cpp:361:3: warning: suggest parentheses around assignment used as truth value [-Wparentheses]

llvm-svn: 298082

This fixes pr32031 by representing the expressions results as a
SectionBase and offset. This allows us to use an input section
directly instead of getting lost trying to compute an offset in an
outputsection when not all the information is available yet.

This also creates a struct to represent the *value* of and expression,
allowing the expression itself to be a simple typedef. I think this is
easier to read and will make it easier to extend the expression
computation to handle more complicated cases.

llvm-svn: 298079

Patch reuses BssSection section to simplify creation of 
COMMON section.

Differential revision: https://reviews.llvm.org/D30690

llvm-svn: 298078

llvm-svn: 298076

llvm-svn: 298072

llvm-svn: 298071

Error was:
Relocations.cpp:792:38: error: expected primary-expression before ‘>’ token
         In<ELFT>::Iplt->addEntry<ELFT>(Body);

llvm-svn: 298070

Alternative approach can be remove templated method
either, like D31028 do.

llvm-svn: 298065

It failed for me under windows,
touch reported invalid date format.

Seems related to 12h/24h format, though
I don't understant why 197001010200 does not work, 
but 197001010300 works, I see no logic here.

Changed to 197001011200.

llvm-svn: 298064

Was fixed, details on review page.

Original commit message:

That removes CopyRelSection class completely, making
Bss/BssRelRo to be just regular synthetics.

This is splitted from D30541 and polished.
Difference from D30541 that all logic of SharedSymbol
converting to DefinedRegular was removed for now and
probably will be posted as separate patch.

Differential revision: https://reviews.llvm.org/D30892

llvm-svn: 298062

Patch to fix lld tests after my llvm-objdump patch to fix branch labels for
Thumb targets.

Reviewed by: emaste

Differential Revision: https://reviews.llvm.org/D30986

llvm-svn: 298055

llvm-svn: 298038

This patch causes us to use pruneCache() to prune the ThinLTO cache after
completing LTO. A new flag --thinlto-cache-policy allows users to configure
the policy.

Differential Revision: https://reviews.llvm.org/D31021

llvm-svn: 298036