3 Commits

Author	SHA1	Message	Date
Dan Gohman	d934cb8806	[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. llvm-svn: 296190	2017-02-24 23:18:00 +00:00
Derek Schuff	b7d6d9e3cd	[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 llvm-svn: 278073	2016-08-08 23:56:01 +00:00
Derek Schuff	c64d7655b2	[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 llvm-svn: 277398	2016-08-01 22:25:02 +00:00