Commit Graph

13 Commits

Author SHA1 Message Date
Thomas Lively 393d0f799f [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
2019-10-18 20:27:30 +00:00
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
Thomas Lively 2e1504091e [WebAssembly] Update MC for bulk memory
Summary:
Rename MemoryIndex to InitFlags and implement logic for determining
data segment layout in ObjectYAML and MC. Also adds a "passive" flag
for the .section assembler directive although this cannot be assembled
yet because the assembler does not support data sections.

Reviewers: sbc100, aardappel, aheejin, dschuff

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

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D57938

llvm-svn: 354397
2019-02-19 22:56:19 +00:00
Sam Clegg 262e09018b [WebAssembly] Remove final -wasm component of target triple. NFC.
This has been the default for a while now.

llvm-svn: 332009
2018-05-10 17:59:41 +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
Reid Kleckner 36f678b48a [wasm] Fix wasm lld test on Windows, where the executable name ends in .exe
llvm-svn: 327560
2018-03-14 19:49:57 +00:00
Nicholas Wilson 5639da89a9 [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
2018-03-12 15:44:07 +00:00
Sam Clegg 99eb42c0c5 [WebAssembly] Remove DataSize from linking metadata
This means we don't need to write the linking metadata section
at all for executable (non-relocatable) output.

Differential Revision: https://reviews.llvm.org/D42869

llvm-svn: 326268
2018-02-27 23:58:03 +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
Rui Ueyama f05124e60c Use wasm-ld instead of "lld -flavor wasm".
Invoking lld as ld.lld, ld.ld64, lld-link or wasm-ld is preferred
than invoking lld as lld and pass an -flavor option. We have "lld"
file mostly for historical reasons.

Differential Revision: https://reviews.llvm.org/D43407

llvm-svn: 325405
2018-02-16 22:58:02 +00:00
Reid Kleckner feda4f6a50 Fix LLD wasm error check on Windows, which prints "lld.EXE: error: ..."
llvm-svn: 324297
2018-02-06 00:06:45 +00:00
Sam Clegg 8f6d2def2b [WebAssembly] Write minimal types section
Don't include type signatures that are not referenced by
some relocation.

We don't include this in the -gc-sections settings since
we are always building the type section from scratch,
just like we do the table elements.

In the future we might want to unify the relocation
processing which is currently done once for gc-sections
and then again for building the sympathetic type and
table sections.

Differential Revision: https://reviews.llvm.org/D42747

llvm-svn: 323931
2018-01-31 23:48:14 +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