From 5f73ce2b7ebfc0234a4bc736217110a2af1e2380 Mon Sep 17 00:00:00 2001 From: Folkert de Vries Date: Wed, 7 May 2025 20:02:29 +0200 Subject: add `extern "custom"` functions --- compiler/rustc_codegen_gcc/src/abi.rs | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'compiler/rustc_codegen_gcc') diff --git a/compiler/rustc_codegen_gcc/src/abi.rs b/compiler/rustc_codegen_gcc/src/abi.rs index 3d0c258f576..08f3d281904 100644 --- a/compiler/rustc_codegen_gcc/src/abi.rs +++ b/compiler/rustc_codegen_gcc/src/abi.rs @@ -239,12 +239,16 @@ impl<'gcc, 'tcx> FnAbiGccExt<'gcc, 'tcx> for FnAbi<'tcx, Ty<'tcx>> { pub fn conv_to_fn_attribute<'gcc>(conv: CanonAbi, arch: &str) -> Option> { let attribute = match conv { CanonAbi::C | CanonAbi::Rust => return None, + CanonAbi::RustCold => FnAttribute::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 => return None, CanonAbi::Arm(arm_call) => match arm_call { ArmCall::CCmseNonSecureCall => FnAttribute::ArmCmseNonsecureCall, ArmCall::CCmseNonSecureEntry => FnAttribute::ArmCmseNonsecureEntry, ArmCall::Aapcs => FnAttribute::ArmPcs("aapcs"), }, - CanonAbi::RustCold => FnAttribute::Cold, CanonAbi::GpuKernel => { if arch == "amdgpu" { FnAttribute::GcnAmdGpuHsaKernel -- cgit 1.4.1-3-g733a5