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| author | Dan Gohman <sunfish@mozilla.com> | 2019-11-25 09:50:58 -0800 |
|---|---|---|
| committer | Dan Gohman <sunfish@mozilla.com> | 2020-02-27 07:55:36 -0800 |
| commit | 00072c08c75050ae2c835b7bb0e505475dbcd7b9 (patch) | |
| tree | f6ea954da28498b216233acac4507efe27ff1eea /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 197bda587b4bb5e7603ad05fc1106332edc6afbd (diff) | |
| download | llvm-00072c08c75050ae2c835b7bb0e505475dbcd7b9.zip llvm-00072c08c75050ae2c835b7bb0e505475dbcd7b9.tar.gz llvm-00072c08c75050ae2c835b7bb0e505475dbcd7b9.tar.bz2 | |
[WebAssembly] Mangle the argc/argv `main` as `__wasm_argc_argv`.
WebAssembly enforces a rule that caller and callee signatures must
match. This means that the traditional technique of passing `main`
`argc` and `argv` even when it doesn't need them doesn't work.
Currently the backend renames `main` to `__original_main`, however this
doesn't interact well with LTO'ing libc, and the name isn't intuitive.
This patch allows us to transition to `__main_argc_argv` instead.
This implements the proposal in
https://github.com/WebAssembly/tool-conventions/pull/134
with a flag to disable it when targeting Emscripten, though this is
expected to be temporary, as discussed in the proposal comments.
Differential Revision: https://reviews.llvm.org/D70700
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions