Commit Graph

8 Commits

Author SHA1 Message Date
Sam Clegg 8fcf012693 [WebAssembly] Refactor synthetic sections and relocation processing. NFC.
Major refactor to better match the structure of the ELF linker.

- Split out relocation processing into scanRelocations
- Split out synthetic sections into their own classes.

Differential Revision: https://reviews.llvm.org/D61811

llvm-svn: 361233
2019-05-21 09:13:09 +00:00
Aaron Smith 7e2ea97c9b [WebAssembly] Fix broken build due to missing attributes.inc
WebAssembly depends on attributes.h which includes attributes.inc. 
Unless cmake explicitly specifies this dependency, the .inc file 
is sometimes generated after the build tries to use it.

Patch by Stella Stamenova 

llvm-svn: 334581
2018-06-13 08:38:23 +00:00
Sam Clegg c729c1b47d [WebAssembly] Initial support for LTO
Differential Revision: https://reviews.llvm.org/D47162

llvm-svn: 333570
2018-05-30 18:07:52 +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
Sam Clegg 5fa274bea4 [WebAssembly] Add InputChunk as common base class for InputSegment and InputFunction. NFC.
Differential Revision: https://reviews.llvm.org/D41419

llvm-svn: 322148
2018-01-10 01:13:34 +00:00
Sam Clegg 51d7798237 Add missing reference to lldCommon in MinGW/CMakeLists.txt
Without this the LLVM_BUILD_LLVM_DYLIB+DLLVM_LINK_LLVM_DYLIB build
break.

Also remove unneeded lldCore from wasm/CMakeLists.txt

Differential Revision: https://reviews.llvm.org/D41194

llvm-svn: 320610
2017-12-13 20:39:02 +00:00
Sam Clegg a681a1167e [WebAssembly] Remove wasm/Strings.cpp+h
This file contained only a single function that was only
really needed in one place, so just inline it.

Differential Revision: https://reviews.llvm.org/D40870

llvm-svn: 319876
2017-12-06 03:10:39 +00:00
Sam Clegg c94d393ad5 [WebAssembly] Initial wasm linker implementation
This linker backend is still a work in progress but is
enough to link simple programs including linking against
library archives.

Differential Revision: https://reviews.llvm.org/D34851

llvm-svn: 318539
2017-11-17 18:14:09 +00:00