diff options
| -rw-r--r-- | src/abi/mod.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/abi/mod.rs b/src/abi/mod.rs index fe5b220117f..4c6fd907815 100644 --- a/src/abi/mod.rs +++ b/src/abi/mod.rs @@ -51,6 +51,11 @@ pub(crate) fn conv_to_call_conv( CanonAbi::Rust | CanonAbi::C => default_call_conv, CanonAbi::RustCold => CallConv::Cold, + // Functions with this calling convention can only be called from assembly, but it is + // possible to declare an `extern "custom"` block, so the backend still needs a calling + // convention for declaring foreign functions. + CanonAbi::Custom => default_call_conv, + CanonAbi::X86(x86_call) => match x86_call { X86Call::SysV64 => CallConv::SystemV, X86Call::Win64 => CallConv::WindowsFastcall, |