Commit Graph

9 Commits

Author SHA1 Message Date
Sam Clegg 7d4ec5af6c [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
2019-05-31 22:51:59 +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
Sam Clegg 230dc11d24 [WebAssembly] Refactor handling of weak undefined functions. NFC.
Also add to the docs.

This is refactor in preparation for https://reviews.llvm.org/D57909

Differential Revision: https://reviews.llvm.org/D57920

llvm-svn: 353478
2019-02-07 22:42:16 +00:00
Sam Clegg 37125f080f [WebAssembly] Respect `--no-mangle` in more locations
`--no-demangle` now also applies to the name section.  This change
was motivated by the rust team that have a slightly different name
mangling scheme to the standard C++ itanium one and prefer to do their
de-mangling as a post-link setp.

Patch by Alex Crichton!

Differential Revision: https://reviews.llvm.org/D54279

llvm-svn: 346516
2018-11-09 16:57:41 +00:00
Sam Clegg 305b0343ce [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
2018-09-27 21:06:25 +00:00
Sam Clegg 47e2b6b29e [WebAssembly] Don't error when --undefined symbols are not found
This matches the behavior of the ELF linker where -u/--undefined
means symbols will get pulled in from archives but won't result
in link error if they are missing.

Also, don't actually great symbol table entries for the undefined
symbols, again matching more closely the ELF linker.

This also results in simplification of the code.

Differential Revision: https://reviews.llvm.org/D50279

llvm-svn: 338938
2018-08-04 00:04:06 +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
Sam Clegg 752494bfe3 [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
2018-05-05 01:23:07 +00:00
Nicholas Wilson 531769b9f9 [WebAssembly] Demangle symbol names for use by the browser debugger
Differential Revision: https://reviews.llvm.org/D44316

llvm-svn: 327392
2018-03-13 13:30:04 +00:00