3 Commits

Author	SHA1	Message	Date
Dan Gohman	53ff96ab08	[WebAssembly] Basic support for Wasm object file encoding. ... With the "wasm32-unknown-unknown-wasm" triple, this allows writing out simple wasm object files, and is another step in a larger series toward migrating from ELF to general wasm object support. Note that this code and the binary format itself is still experimental. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296190 91177308-0d34-0410-b5e6-96231b3b80d8	2017-02-24 23:18:00 +00:00
Derek Schuff	d55ce11c46	[WebAssembly] Fix CFI index to account for padding nullptr function ... The WebAssembly linker now creates a dummy function at index 0 to prevent miscomparisons with the NULL pointer, see https://github.com/WebAssembly/binaryen/pull/658. Thanks to pcc for pointing out this problem! Patch by Dominic Chen Differential Revision: https://reviews.llvm.org/D23137 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278073 91177308-0d34-0410-b5e6-96231b3b80d8	2016-08-08 23:56:01 +00:00
Derek Schuff	23429a5af3	[WebAssembly] Support CFI for WebAssembly target ... Summary: This patch implements CFI for WebAssembly. It modifies the LowerTypeTest pass to pre-assign table indexes to functions that are called indirectly, and lowers type checks to test against the appropriate table indexes. It also modifies the WebAssembly backend to support a special ".indidx" assembly directive that propagates the table index assignments out to the linker. Patch by Dominic Chen Differential Revision: https://reviews.llvm.org/D21768 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@277398 91177308-0d34-0410-b5e6-96231b3b80d8	2016-08-01 22:25:02 +00:00