Specifically add support for custom sections that contain
relocations, and for the two new relocation types needed
by DWARF sections.
See: https://reviews.llvm.org/D44184
Patch by Yury Delendik!
Differential Revision: https://reviews.llvm.org/D44184
llvm-svn: 331566
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
Copy user-defined custom sections into the output, concatenating
sections with the same name.
Differential Revision: https://reviews.llvm.org/D45340
llvm-svn: 329717
This enables callback-style programming where the JavaScript environment
can call back into the Wasm environment using a function pointer
received from the module.
Differential Revision: https://reviews.llvm.org/D44427
llvm-svn: 328643
This reduces the number of lookups to one per COMDAT group, rather than
one per symbol in a COMDAT group.
Differential Revision: https://reviews.llvm.org/D44344
llvm-svn: 327523
Previously, Config->InitialMemory/MaxMemory were hooked up to some
commandline args but had no effect at all.
Differential Revision: https://reviews.llvm.org/D44393
llvm-svn: 327508
This bug was found by accident while trying to expand out testcases
for imported symbols, and is covered by the additional test case.
Differential Revision: https://reviews.llvm.org/D44331
llvm-svn: 327290
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
Previously we created __wasm_call_ctors with null InputFunction, and
added the InputFunction later. Now we create the SyntheticFunction with
null body, and set the body later.
Differential Revision: https://reviews.llvm.org/D44206
llvm-svn: 327149
This avoids the Writer unnecessarily having a member to retain ownership
of the function body.
Differential Revision: https://reviews.llvm.org/D43933
llvm-svn: 326580
Let X and Y be types. Previously, functions F(X, Y) and G(Y, X) had
the same hash value because their hash values are computed as follows:
hash(F) = hash(X) + hash(Y)
hash(G) = hash(Y) + hash(X)
This patch fixes the issue by using hash_combine.
Differential Revision: https://reviews.llvm.org/D43856
llvm-svn: 326336
These output section names are ELF-specific. We shouldn't have this rule
for WebAssembly.
Differential Revision: https://reviews.llvm.org/D43712
llvm-svn: 326289
SubSection inherited from SyntheticSection, and SyntheticSection inherits
from OutputSection, so SubSection was an OutputSection. But that's wrong
because SubSection is not actually a WebAssembly output section.
It shares some functionalities with OutputSection, but overall it's very
different.
This patch removes that inheritance.
Differential Revision: https://reviews.llvm.org/D43719
llvm-svn: 326286
FileOutputBuffer automatically removes an existing file, so we don't
need to do that. Actually doing that is discouraged because when the
linker fails to create an output for some reason after instantiating
FileOutputBufffer, FileOutputBuffer removes a temporary file and don't
touch an existing file. That's an desired behavior from the user's
point of view.
(Internally, FileOutputBuffer writes its contents to a temporary file
and then rename it over to an existing file on commit()).
Differential Revision: https://reviews.llvm.org/D43728
llvm-svn: 326281
Instead of {Function,Global,Data}Symbol, use Defined{Function,Global,Data}
because undefined symbol should never reach this function.
Differential Revision: https://reviews.llvm.org/D43710
llvm-svn: 326275
I think calling reserve() for each object file is too many and isn't useful.
We can add reserve() later. By default, we shouldn't add reserve() to a lot
of places.
Differential Revision: https://reviews.llvm.org/D43722
llvm-svn: 326273
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
lld uses an arena allocator to one of allocations
like these can just use make<>.
Differential Revision: https://reviews.llvm.org/D43587
llvm-svn: 325706
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
The profailing style in lld seem to be to not include such empty lines.
Clang-tidy/clang-format seem to handle this just fine.
Differential Revision: https://reviews.llvm.org/D43528
llvm-svn: 325629
Andrea Di Biagio