Commit Graph

23 Commits

Author SHA1 Message Date
Sam Clegg 0e6b42f5eb [WebAssebmly] Allow __wasm_call_ctors to be GC'ed
Differential Revision: https://reviews.llvm.org/D58806

llvm-svn: 355240
2019-03-01 22:35:47 +00:00
Heejin Ahn a1cc4ea7bb [WebAssembly] clang-tidy (NFC)
Summary:
This patch fixes clang-tidy warnings on wasm-only files.
The list of checks used is:
`-*,clang-diagnostic-*,llvm-*,misc-*,-misc-unused-parameters,readability-identifier-naming,modernize-*`
(LLVM's default .clang-tidy list is the same except it does not have
`modernize-*`.)

The list of fixes are:
- Variable names start with an uppercase letter
- Function names start with a lowercase letter
- Use `auto` when you use casts so the type is evident

Reviewers: sbc100

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

Differential Revision: https://reviews.llvm.org/D57499

llvm-svn: 353076
2019-02-04 19:13:46 +00:00
Sam Clegg 79e33171d6 [WebAssembly] Update relocation naming to match llvm change. NFC.
Differential Revision: https://reviews.llvm.org/D57698

llvm-svn: 353066
2019-02-04 17:49:33 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Heejin Ahn e915a71f18 [WebAssembly] Add support for the event section
Summary:
This adds support for the 'event section' specified in the exception
handling proposal.

Wasm exception handling binary model spec:
https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md#changes-to-the-binary-model

Reviewers: sbc100, ruiu

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

Differential Revision: https://reviews.llvm.org/D54875

llvm-svn: 348703
2018-12-08 06:17:43 +00:00
Heejin Ahn b6254c515f [WebAssembly] Delete unused using statements (NFC)
Reviewers: sbc100, dschuff

Subscribers: mehdi_amini, jgravelle-google, sunfish, steven_wu, dexonsmith, llvm-commits

Differential Revision: https://reviews.llvm.org/D54683

llvm-svn: 347370
2018-11-21 00:51:37 +00:00
Sam Clegg ce004bfe35 [WebAssembly] Add support for bitcode archive members
This change effects the behavior of --export-all. Previously
--export-all would only effect symbols that survived GC. Now
--export-all will prevent any non-local symbols from being GCed.

Differential Revision: https://reviews.llvm.org/D48673

llvm-svn: 335878
2018-06-28 17:04:58 +00:00
Sam Clegg ffd0aaf810 Revert "[WebAssembly] Error on mismatched function signature in final output"
This caused a lot of issues on the WebAssembly waterfall.
In particular, until with the signature of `main`.  We
probably want a better solution for main before we re-land.

Reverts rL335192

llvm-svn: 335355
2018-06-22 15:13:10 +00:00
Sam Clegg 084d360f69 [WebAssembly] Only mark non-hidden symbols as live if they are also defined
Previously we were also marking undefined symbols (i.e. imports)
as live.

Differential Revision: https://reviews.llvm.org/D48299

llvm-svn: 335243
2018-06-21 15:00:00 +00:00
Sam Clegg 1369dfa30b [WebAssembly] Error on mismatched function signature in final output
During symbol resolution, emit warnings for function signature
mismatches.  During GC, if any mismatched symbol is marked as live
then generate an error.

This means that we only error out if the mismatch is written to the
final output.  i.e. if we would generate an invalid wasm file.

Differential Revision: https://reviews.llvm.org/D48394

llvm-svn: 335192
2018-06-21 00:12:25 +00:00
Nicola Zaghen e7245b429b [lld] Update uses of DEBUG macro to LLVM_DEBUG.
The DEBUG() macro is very generic so it might clash with other projects.
The renaming was done as follows:
- git grep -l 'DEBUG' | xargs sed -i 's/\bDEBUG\s\?(/LLVM_DEBUG(/g'
- git diff -U0 master | ../clang/tools/clang-format/clang-format-diff.py -i -p1 -style LLVM

Differential Revision: https://reviews.llvm.org/D44977

llvm-svn: 332351
2018-05-15 13:36:20 +00:00
Nicholas Wilson 358af38d37 [WebAssembly] Implement -print-gc-sections, to better test GC of globals
Differential Revision: https://reviews.llvm.org/D44311

llvm-svn: 330456
2018-04-20 17:28:12 +00:00
Nicholas Wilson a1e299f58b [WebAssembly] Implement GC for imports
Differential Revision: https://reviews.llvm.org/D44313

llvm-svn: 330454
2018-04-20 17:18:06 +00:00
Nicholas Wilson 6c7fe30a1c [WebAssembly] Implement --print-gc-sections for synthetic functions
Enables cleaning up confusion between which name variables are mangled
and which are unmangled, and --print-gc-sections then excersises and
tests that.

Differential Revision: https://reviews.llvm.org/D44440

llvm-svn: 330449
2018-04-20 17:09:18 +00:00
Nicholas Wilson 2e55ee77e2 [WebAssembly] Handle weak undefined functions with a synthetic stub
This error case is described in Linking.md. The operand for call requires
generation of a synthetic stub.

Differential Revision: https://reviews.llvm.org/D44028

llvm-svn: 327151
2018-03-09 17:06:38 +00:00
Sam Clegg 9310297438 [WebAssembly] Add explicit symbol table
This change modified lld to in response the llvm change which
moved to a more explicit symbol table in the object format.

Based on patches by Nicholas Wilson:
 1. https://reviews.llvm.org/D41955
 2. https://reviews.llvm.org/D42585

The primary difference that we see in the test output is that
for relocatable (-r) output we now have symbol table which
replaces exports/imports and globals.

See: https://github.com/WebAssembly/tool-conventions/issues/38
Differential Revision: https://reviews.llvm.org/D43264

llvm-svn: 325861
2018-02-23 05:08:53 +00:00
Sam Clegg 00245539b6 [WebAssembly] Rename GlobalSymbol types. NFC.
Purely a rename in preparation for adding new global symbol type.

We want to use GlobalSymbol to represent real wasm globals and
DataSymbol for pointers to things in linear memory (what ELF would
call STT_OBJECT).

This reduces the size the patch to add the explicit symbol table
which is coming soon!

Differential Revision: https://reviews.llvm.org/D43476

llvm-svn: 325645
2018-02-20 23:38:27 +00:00
Rui Ueyama 34133b23e4 [WebAssembly] Expand a lambda that is used only once.
Differential Revision: https://reviews.llvm.org/D43435

llvm-svn: 325536
2018-02-19 22:34:47 +00:00
Rui Ueyama 81bee04bf9 [WebAssembly] Define toString(wasm::InputChunk *) and use that in MarkLive.cpp.
Define toString(wasm::InputChunk *) and use that in MarkLive.cpp.

Differential Revision: https://reviews.llvm.org/D43434

llvm-svn: 325535
2018-02-19 22:29:48 +00:00
Sam Clegg 6d83fb4c07 [WebAssembly] Remove unneeded Chunk::getFileName() method. NFC.
Differential Revision: https://reviews.llvm.org/D43405

llvm-svn: 325414
2018-02-16 23:46:51 +00:00
Sam Clegg 3d1f4b954d [WebAssembly] Fix typos in comment. NFC.
Patch by Nicholas Wilson!

llvm-svn: 325370
2018-02-16 18:37:32 +00:00
Sam Clegg f0d433d0c6 [WebAssembly] Refactor linker-generated symbols. NFC.
Group all synthetic symbols in the in single struct to match
the ELF linker.

This change is part of a larger change to add more linker
symbols such as `_end` and `_edata`.

Differential Revision: https://reviews.llvm.org/D42866

llvm-svn: 324157
2018-02-02 22:59:56 +00:00
Sam Clegg 0362633fd2 [WebAssembly] Add support for --gc-sections
In this initial version we only GC symbols with `hidden` visibility since
other symbols we export to the embedder.

We could potentially modify this the future and only use symbols
explicitly passed via `--export` as GC roots.

This version of the code only does GC of data and code. GC for the
types section is coming soon.

Differential Revision: https://reviews.llvm.org/D42511

llvm-svn: 323842
2018-01-31 01:45:47 +00:00