[WebAssembly] Add new relocation type for TLS data symbols

These relocations represent offsets from the __tls_base symbol.

Previously we were just using normal MEMORY_ADDR relocations and relying
o

[WebAssembly] Add new relocation type for TLS data symbols

These relocations represent offsets from the __tls_base symbol.

Previously we were just using normal MEMORY_ADDR relocations and relying
on the linker to select a segment-offset rather and absolute value in
Symbol::getVirtualAddress(). Using an explicit relocation type allows
allow us to clearly distinguish absolute from relative relocations based
on the relocation information alone.

One place this is useful is being able to reject absolute relocation in
the PIC case, but still accept TLS relocations.

Differential Revision: https://reviews.llvm.org/D91276

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[WebAssembly] Implementation of (most) table instructions

Implementation of instructions table.get, table.set, table.grow,
table.size, table.fill, table.copy.

Missing instructions are table.init an

[WebAssembly] Implementation of (most) table instructions

Implementation of instructions table.get, table.set, table.grow,
table.size, table.fill, table.copy.

Missing instructions are table.init and elem.drop as they deal with
element sections which are not yet implemented.

Added more tests to tables.s

Differential Revision: https://reviews.llvm.org/D89797

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[WebAssembly] Added .tabletype to asm and multiple table support in obj files

Adds more testing in basic-assembly.s and a new test tables.s.
Adds support to yaml reading and writing of tables as wel

[WebAssembly] Added .tabletype to asm and multiple table support in obj files

Adds more testing in basic-assembly.s and a new test tables.s.
Adds support to yaml reading and writing of tables as well.

Differential Revision: https://reviews.llvm.org/D88815

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[WebAssembly] 64-bit (function) pointer fixes.

Accounting for the fact that Wasm function indices are 32-bit, but in wasm64 we want uniform 64-bit pointers.
Includes reloc types for 64-bit table ind

[WebAssembly] 64-bit (function) pointer fixes.

Accounting for the fact that Wasm function indices are 32-bit, but in wasm64 we want uniform 64-bit pointers.
Includes reloc types for 64-bit table indices.

Differential Revision: https://reviews.llvm.org/D83729

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[WebAssembly] Triple::wasm64 related cleanup

Differential Revision: https://reviews.llvm.org/D83713

[WebAssembly] 64-bit memory limits

[WebAssembly] Add support for externalref to MC and wasm-ld

This allows code for handling externref values to be processed by the
assembler and linker.

Differential Revision: https://reviews.llvm.o

[WebAssembly] Add support for externalref to MC and wasm-ld

This allows code for handling externref values to be processed by the
assembler and linker.

Differential Revision: https://reviews.llvm.org/D81977

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[WebAssembly] Adding 64-bit version of R_WASM_MEMORY_ADDR_* relocs

This adds 4 new reloc types.

A lot of code that previously assumed any memory or offset values could be contained in a uint32_t (a

[WebAssembly] Adding 64-bit version of R_WASM_MEMORY_ADDR_* relocs

This adds 4 new reloc types.

A lot of code that previously assumed any memory or offset values could be contained in a uint32_t (and often truncated results from functions returning 64-bit values) have been upgraded to uint64_t. This is not comprehensive: it is only the values that come in contact with the new relocation values and their dependents.

A new tablegen mapping was added to automatically upgrade loads/stores in the assembler, which otherwise has no way to select for these instructions (since they are indentical other than for the offset immediate). It follows a similar technique to https://reviews.llvm.org/D53307

Differential Revision: https://reviews.llvm.org/D81704

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SymbolicFile.h - removed unused FileSystem.h include. NFC.

Exposes a number of implicit dependencies that needs fixing in source files and XCOFFObjectFile.h.

[Object] Change uint32_t getSymbolFlags() to Expected<uint32_t> getSymbolFlags().

This change enables getSymbolFlags() to return errors which benefit error reporting in clients.

Differential Revisi

[Object] Change uint32_t getSymbolFlags() to Expected<uint32_t> getSymbolFlags().

This change enables getSymbolFlags() to return errors which benefit error reporting in clients.

Differential Revision: https://reviews.llvm.org/D77860

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[WebAssembly] Add int32 DW_OP_WASM_location variant

This to allow us to add reloctable global indices as a symbol.
Also adds R_WASM_GLOBAL_INDEX_I32 relocation type to support it.

See discussion in

[WebAssembly] Add int32 DW_OP_WASM_location variant

This to allow us to add reloctable global indices as a symbol.
Also adds R_WASM_GLOBAL_INDEX_I32 relocation type to support it.

See discussion in https://github.com/WebAssembly/debugging/issues/12

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Enable finding bitcode in wasm objects

This commit fixes using functions in `IRObjectFile` to load bitcode from
wasm objects by recognizing the file magic for wasm and also inheriting
the default im

Enable finding bitcode in wasm objects

This commit fixes using functions in `IRObjectFile` to load bitcode from
wasm objects by recognizing the file magic for wasm and also inheriting
the default implementation of classifying sections as bitcode.

Patch By: alexcrichton

Differential Revision: https://reviews.llvm.org/D78199

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[WebAssembly] Move event section before global section

Summary:
https://github.com/WebAssembly/exception-handling/issues/98

Also this moves many parts of code to make code align with the section
or

[WebAssembly] Move event section before global section

Summary:
https://github.com/WebAssembly/exception-handling/issues/98

Also this moves many parts of code to make code align with the section
order, even if they don't affect the output.

Reviewers: tlively

Subscribers: dschuff, sbc100, hiraditya, sunfish, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D76752

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[WebAssembly] Use llvm::Optional to store optional symbol attributes. NFC.

The changes the in-memory representation of wasm symbols such that their
optional ImportName and ImportModule use llvm::Op

[WebAssembly] Use llvm::Optional to store optional symbol attributes. NFC.

The changes the in-memory representation of wasm symbols such that their
optional ImportName and ImportModule use llvm::Optional.

ImportName is set whenever WASM_SYMBOL_EXPLICIT_NAME flag is set.
ImportModule (for imports) is currently always set since it defaults to
"env".

In the future we can possibly extent to binary format distingish
import which have explit module names.

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D74109

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Revert "Remove redundant "std::move"s in return statements"

The build failed with

error: call to deleted constructor of 'llvm::Error'

errors.

This reverts commit 1c2241a7936bf85aa68aef94bd40c3b

Revert "Remove redundant "std::move"s in return statements"

The build failed with

error: call to deleted constructor of 'llvm::Error'

errors.

This reverts commit 1c2241a7936bf85aa68aef94bd40c3ba77d8ddf2.

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Remove redundant "std::move"s in return statements

Another round of GCC5 fixes.

Make llvm::StringRef to std::string conversions explicit.

This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly m

Make llvm::StringRef to std::string conversions explicit.

This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.

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[WebAssembly] Add WebAssembly support to llvm-symbolizer

The only thing missing for basic llvm-symbolizer support is the ability on
lib/Object to get a wasm symbol's section ID, which allows sorting

[WebAssembly] Add WebAssembly support to llvm-symbolizer

The only thing missing for basic llvm-symbolizer support is the ability on
lib/Object to get a wasm symbol's section ID, which allows sorting and
computation of the symbols' sizes.

Also, when the WasmAsmParser switches sections on new functions, also add the
section to the list of Dwarf sections if Dwarf is being generated for assembly;
this allows writing of simple tests.

Reviewers: sbc100, jhenderson, aardappel

Differential Revision: https://reviews.llvm.org/D73246

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[WebAssembly] Add new `export_name` clang attribute for controlling wasm export names

This is equivalent to the existing `import_name` and `import_module`
attributes which control the import names i

[WebAssembly] Add new `export_name` clang attribute for controlling wasm export names

This is equivalent to the existing `import_name` and `import_module`
attributes which control the import names in the final wasm binary
produced by lld.

This maps the existing

This attribute currently requires a string rather than using the
symbol name for a couple of reasons:

1. Avoid confusion with static and dynamic linking which is
based on symbol name. Exporting a function from a wasm module using
this directive is orthogonal to both static and dynamic linking.
2. Avoids name mangling.

Differential Revision: https://reviews.llvm.org/D70520

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[WebAssembly] Allow multivalue signatures in object files

Summary:
Also changes the wasm YAML format to reflect the possibility of having
multiple return types and to put the returns after the param

[WebAssembly] Allow multivalue signatures in object files

Summary:
Also changes the wasm YAML format to reflect the possibility of having
multiple return types and to put the returns after the params for
consistency with the binary encoding.

Reviewers: aheejin, sbc100

Subscribers: dschuff, jgravelle-google, hiraditya, sunfish, arphaman, rupprecht, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69156

llvm-svn: 375283

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[llvm] Migrate llvm::make_unique to std::make_unique

Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of

[llvm] Migrate llvm::make_unique to std::make_unique

Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of (hopefully) all the llvm::make_unique instances across the monorepo.

llvm-svn: 369013

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[NFC] Test commit, corrected some spelling in comment

Test commit, corrected some spelling in comment.

Differential Revision: https://reviews.llvm.org/D65516

llvm-svn: 367685

[Object] Change ObjectFile::getSectionContents to return Expected<ArrayRef<uint8_t>>

Change
std::error_code getSectionContents(DataRefImpl, StringRef &) const;
to
Expected<ArrayRef<uint8_t>> getSect

[Object] Change ObjectFile::getSectionContents to return Expected<ArrayRef<uint8_t>>

Change
std::error_code getSectionContents(DataRefImpl, StringRef &) const;
to
Expected<ArrayRef<uint8_t>> getSectionContents(DataRefImpl) const;

Many object formats use ArrayRef<uint8_t> as the underlying type, which
is generally better than StringRef to represent binary data, so change
the type to decrease the number of type conversions.

Reviewed By: ruiu, sbc100

Differential Revision: https://reviews.llvm.org/D61781

llvm-svn: 360648

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[Object] Change getSectionName() to return Expected<StringRef>

Summary:
It currently receives an output parameter and returns
std::error_code. Expected<StringRef> fits for this purpose perfectly.

D

[Object] Change getSectionName() to return Expected<StringRef>

Summary:
It currently receives an output parameter and returns
std::error_code. Expected<StringRef> fits for this purpose perfectly.

Differential Revision: https://reviews.llvm.org/D61421

llvm-svn: 359774

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