From 9bcbfee5f3e7d69b59c985404b3e4e0788f4a607 Mon Sep 17 00:00:00 2001 From: Philip Herron Date: Fri, 14 May 2021 12:23:33 +0100 Subject: Add FNV-128 hash for legacy symbol mangling Rustc uses a SIP128 hash for the legacy symbol mangling but an FNV hash is simpler to implement this is a port of the implementation from golang stdlib hash package. The fingerprint for the hash is simple the function signiture for now. Rustc takes into account options such as -Cmetadata to generate uniqueness. We still need to implement an SIP128 and the V0 symbol mangling but this will do in the interim. Addresses: #305 Fixes: #428 --- gcc/rust/backend/rust-compile-context.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'gcc/rust/backend/rust-compile-context.h') diff --git a/gcc/rust/backend/rust-compile-context.h b/gcc/rust/backend/rust-compile-context.h index 45fb6c2..5df0d89 100644 --- a/gcc/rust/backend/rust-compile-context.h +++ b/gcc/rust/backend/rust-compile-context.h @@ -283,9 +283,12 @@ public: return pop; } - std::string mangle_item (const std::string &name) const; + // this needs to support Legacy and V0 see github #429 or #305 + std::string mangle_item (const TyTy::BaseType *ty, + const std::string &name) const; std::string mangle_impl_item (const TyTy::BaseType *self, + const TyTy::BaseType *ty, const std::string &name) const; private: -- cgit v1.1