[lld][WebAssembly] Add support for -soname

This change writes the module name to the name section of the wasm
binary. We use the `-soname` argument to determine the name and we
default the output f

[lld][WebAssembly] Add support for -soname

This change writes the module name to the name section of the wasm
binary. We use the `-soname` argument to determine the name and we
default the output file basename if this option is not specified.

In the future we will likely want to embed the soname in the dylink
section too, but this the first step in supporting `-soname`.

Differential Revision: https://reviews.llvm.org/D158001

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[wasm-ld] Update supported features in the generic CPU configuration

Accompanying https://reviews.llvm.org/D125728, this updates LLVM
Codegen's "generic" CPU to enable the same new features.

Differ

[wasm-ld] Update supported features in the generic CPU configuration

Accompanying https://reviews.llvm.org/D125728, this updates LLVM
Codegen's "generic" CPU to enable the same new features.

Differential Revision: https://reviews.llvm.org/D125729

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Revert "[wasm-ld] Add -mcpu=mvp to wasm-ld tests"

This reverts commit b5d0bf9b9853688d34290fafdd31c95aca58f624.

The original commit is causing 10 test failures on multiple bots, reverting to get ba

Revert "[wasm-ld] Add -mcpu=mvp to wasm-ld tests"

This reverts commit b5d0bf9b9853688d34290fafdd31c95aca58f624.

The original commit is causing 10 test failures on multiple bots, reverting to get back to green.

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[wasm-ld] Add -mcpu=mvp to wasm-ld tests

Following up on D125729, add -mcpu-mvp to wasm-ld tests that use llc to
avoid test changes as a result of default target changes.

[WebAssembly] Rename WasmLimits::Initial to ::Minimum. NFC.

This patch renames the "Initial" member of WasmLimits to the name used
in the spec, "Minimum".

In the core WebAssembly specification, th

[WebAssembly] Rename WasmLimits::Initial to ::Minimum. NFC.

This patch renames the "Initial" member of WasmLimits to the name used
in the spec, "Minimum".

In the core WebAssembly specification, the Limits data type has one
required "min" member and one optional "max" member, indicating the
minimum required size of the corresponding table or memory, and the
maximum size, if any.

Although the WebAssembly spec does instantiate locally-defined tables
and memories with the initial size being equal to the minimum size, it
can't impose such a requirement for imports. It doesn't make sense to
require an initial size for a memory import, for example. The compiler
can only sensibly express the minimum and maximum sizes.

See
https://github.com/WebAssembly/js-types/blob/master/proposals/js-types/Overview.md#naming-of-size-limits
for a related discussion that agrees that the right name of "initial" is
"minimum" when querying the type of a table or memory from JavaScript.
(Of course it still makes sense for JS to speak in terms of an initial
size when it explicitly instantiates memories and tables.)

Differential Revision: https://reviews.llvm.org/D99186

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[lld][WebAssembly] Fix resolveIndirectFunctionTable for relocatable output

For relocatable output that needs the indirect function table, identify
the well-known function table. This allows us to p

[lld][WebAssembly] Fix resolveIndirectFunctionTable for relocatable output

For relocatable output that needs the indirect function table, identify
the well-known function table. This allows us to properly fix the
limits on the imported table, and in a followup will allow the element
section to reference the indirect function table even if it's not
assigned to table number 0. Adapt tests for import reordering.

Differential Revision: https://reviews.llvm.org/D96770

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[lld][WebAssembly] Don't defined indirect function table in relocatable output

Object files (and the output --relocatable) should never define
__indirect_function_table. It should always be linker

[lld][WebAssembly] Don't defined indirect function table in relocatable output

Object files (and the output --relocatable) should never define
__indirect_function_table. It should always be linker synthesized
with the final output executable.

Differential Revision: https://reviews.llvm.org/D94993

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[WebAssembly] Add support for table linking to wasm-ld

This patch adds support to wasm-ld for linking multiple table references
together, in a manner similar to wasm globals. The indirect function
t

[WebAssembly] Add support for table linking to wasm-ld

This patch adds support to wasm-ld for linking multiple table references
together, in a manner similar to wasm globals. The indirect function
table is synthesized as needed.

To manage the transitional period in which the compiler doesn't yet
produce TABLE_NUMBER relocations and doesn't residualize table symbols,
the linker will detect object files which have table imports or
definitions, but no table symbols. In that case it will synthesize
symbols for the defined and imported tables.

As a change, relocatable objects are now written with table symbols,
which can cause symbol renumbering in some of the tests. If no object
file requires an indirect function table, none will be written to the
file. Note that for legacy ObjFile inputs, this test is conservative: as
we don't have relocs for each use of the indirecy function table, we
just assume that any incoming indirect function table should be
propagated to the output.

Differential Revision: https://reviews.llvm.org/D91870

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Revert "[WebAssembly] Add support for table linking to wasm-ld"

This reverts commit 38dfce706f796dc109ea495dd69a8cb4c8fa819d.
CI discovered a bug where the table is exported twice: see
D91870

[WebAssembly] Add support for table linking to wasm-ld

This patch adds support to wasm-ld for linking multiple table references
together, in a manner similar to wasm globals. The indirect function
t

[WebAssembly] Add support for table linking to wasm-ld

This patch adds support to wasm-ld for linking multiple table references
together, in a manner similar to wasm globals. The indirect function
table is synthesized as needed.

To manage the transitional period in which the compiler doesn't yet
produce TABLE_NUMBER relocations and doesn't residualize table symbols,
the linker will detect object files which have table imports or
definitions, but no table symbols. In that case it will synthesize
symbols for the defined and imported tables.

As a change, relocatable objects are now written with table symbols,
which can cause symbol renumbering in some of the tests. If no object
file requires an indirect function table, none will be written to the
file. Note that for legacy ObjFile inputs, this test is conservative: as
we don't have relocs for each use of the indirecy function table, we
just assume that any incoming indirect function table should be
propagated to the output.

Differential Revision: https://reviews.llvm.org/D91870

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[WebAssembly] Add support for named globals in the object format.

Differential Revision: https://reviews.llvm.org/D91769

Reland "[lib/Support/YAMLTraits] - Don't print leading zeroes when dumping Hex8/Hex16/Hex32 types." (https://reviews.llvm.org/D90930).

This reverts reverting commit fc40a03323a4b265ccbed34a07e281b13

Reland "[lib/Support/YAMLTraits] - Don't print leading zeroes when dumping Hex8/Hex16/Hex32 types." (https://reviews.llvm.org/D90930).

This reverts reverting commit fc40a03323a4b265ccbed34a07e281b13c5e8367
and fixes LLD (MachO/wasm) tests that failed previously.

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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] 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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[WebAssembly] Don't export __data_end and __heap_base by default.

These can still be exported via --export if needed.

Differential Revision: https://reviews.llvm.org/D62744

llvm-svn: 362276

[WebAssebmly] Allow __wasm_call_ctors to be GC'ed

Differential Revision: https://reviews.llvm.org/D58806

llvm-svn: 355240

[WebAssembly] Update relocation naming to match llvm change. NFC.

Differential Revision: https://reviews.llvm.org/D57698

llvm-svn: 353066

[WebAssembly] Fix crash with LTO + relocatable + undefined symbols

Change the way we create the symbol table to be closer to how its done
on ELF. Now the output symbol table matches the internal sy

[WebAssembly] Fix crash with LTO + relocatable + undefined symbols

Change the way we create the symbol table to be closer to how its done
on ELF. Now the output symbol table matches the internal symtab order
and includes local and undefined symbols.

Fixes PR40204

Differential Revision: https://reviews.llvm.org/D56947

llvm-svn: 352645

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[WebAssembly] Store section alignment as a power of 2

This change bumps for version number of the wasm object file
metadata.

See https://github.com/WebAssembly/tool-conventions/pull/92

Differentia

[WebAssembly] Store section alignment as a power of 2

This change bumps for version number of the wasm object file
metadata.

See https://github.com/WebAssembly/tool-conventions/pull/92

Differential Revision: https://reviews.llvm.org/D56762

llvm-svn: 351287

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[WebAssembly] Instruction renaming

Summary: Associated with D56338.

Reviewers: aheejin, aardappel

Subscribers: dschuff, sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: http

[WebAssembly] Instruction renaming

Summary: Associated with D56338.

Reviewers: aheejin, aardappel

Subscribers: dschuff, sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D56339

llvm-svn: 350610

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[WebAssembly] Add --[no]-export-dynamic to replace --export-default

In a very recent change I introduced a --no-export-default flag
but after conferring with others it seems that this feature alread

[WebAssembly] Add --[no]-export-dynamic to replace --export-default

In a very recent change I introduced a --no-export-default flag
but after conferring with others it seems that this feature already
exists in gnu GNU ld and lld in the form the --export-dynamic flag
which is off by default.

This change replaces export-default with export-dynamic and also
changes the default to match the traditional linker behaviour.

Now, by default, only the entry point is exported. If other symbols
are required by the embedder then --export-dynamic or --export can
be used to export all visibility hidden symbols or individual
symbols respectively.

This change touches a lot of tests that were relying on symbols
being exported by default. I imagine it will also effect many
users but do think the change is worth it match of the traditional
behaviour and flag names.

Differential Revision: https://reviews.llvm.org/D52587

llvm-svn: 343265

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[WebAssembly] Remove final -wasm component of target triple. NFC.

This has been the default for a while now.

llvm-svn: 332009

[WebAssembly] Check function signatures by default

But only produce a warning (for now) unless --fatal-warnings
is passed.

Differential Revision: https://reviews.llvm.org/D46484

llvm-svn: 331574

[WebAssembly] Add version to linking section (to match llvm-side change)

Differential Revision: https://reviews.llvm.org/D46070

llvm-svn: 330971

[WebAssembly] Reorder synthetic functions to come first

This matches the existing ordering that's been there for globals
for a while (__stack_pointer coming first).

Differential Revision: https://r

[WebAssembly] Reorder synthetic functions to come first

This matches the existing ordering that's been there for globals
for a while (__stack_pointer coming first).

Differential Revision: https://reviews.llvm.org/D44333

llvm-svn: 327286

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