diff options
Diffstat (limited to 'src/c-writer.cc')
| -rw-r--r-- | src/c-writer.cc | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/c-writer.cc b/src/c-writer.cc index 7a0c548b..e7bcff4f 100644 --- a/src/c-writer.cc +++ b/src/c-writer.cc @@ -1369,7 +1369,24 @@ static std::string GetMemoryTypeString(const Memory& memory) { } static std::string GetMemoryAPIString(const Memory& memory, std::string api) { - return memory.page_limits.is_shared ? (api + "_shared") : api; + std::string suffix; + if (memory.page_limits.is_shared) { + suffix += "_shared"; + } + + // Memory load and store routines can be optimized for default-page-size, + // 32-bit memories (by using hardware to bounds-check memory access). + // Append "_default32" to these function names to choose the (possibly) fast + // path. + // + // We don't need to do this for runtime routines; those can check the + // wasm_rt_memory_t structure. + if (api.substr(0, 8) != "wasm_rt_" && + memory.page_size == WABT_DEFAULT_PAGE_SIZE && + memory.page_limits.is_64 == false) { + suffix += "_default32"; + } + return api + suffix; } void CWriter::WriteInitExpr(const ExprList& expr_list) { |