llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-clang Author: Heejin Ahn (aheejin) <details> <summary>Changes</summary> When using other specific exception options in Clang, such as `-fseh-exceptions` or `-fsjlj-exceptions`, Clang defines a corresponding preprocessor such as `-D__USING_SJLJ_EXCEPTIONS__`. Emscripten does that in our own build system: https://github.com/emscripten-core/emscripten/blob/7dcd7f40749918e141dc33397d2f4311dd80637a/tools/system_libs.py#L1577-L1578 But to make Wasm EH usable in non-Emscripten toolchain, this has to be defined somewhere else. This PR makes Wasm EH consistent with other exception scheme by letting it defined by Clang depending on the exception option. --- Full diff: https://github.com/llvm/llvm-project/pull/92604.diff 2 Files Affected: - (modified) clang/lib/Frontend/InitPreprocessor.cpp (+2) - (modified) clang/test/CodeGenCXX/wasm-eh.cpp (+4) ``````````diff diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index c1d209466ffe5..3cc85ff502776 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -1006,6 +1006,8 @@ static void InitializePredefinedMacros(const TargetInfo &TI, else if (LangOpts.hasDWARFExceptions() && (TI.getTriple().isThumb() || TI.getTriple().isARM())) Builder.defineMacro("__ARM_DWARF_EH__"); + else if (LangOpts.hasWasmExceptions()) + Builder.defineMacro("__USING_WASM_EXCEPTIONS__"); if (LangOpts.Deprecated) Builder.defineMacro("__DEPRECATED"); diff --git a/clang/test/CodeGenCXX/wasm-eh.cpp b/clang/test/CodeGenCXX/wasm-eh.cpp index af023f52191b9..09588985d4e74 100644 --- a/clang/test/CodeGenCXX/wasm-eh.cpp +++ b/clang/test/CodeGenCXX/wasm-eh.cpp @@ -1,4 +1,8 @@ // REQUIRES: webassembly-registered-target + +// RUN: %clang -E -dM %s -target wasm32-unknown-unknown -fwasm-exceptions | FileCheck %s -check-prefix PREPROCESSOR +// PREPROCESSOR: #define __USING_WASM_EXCEPTIONS__ 1 + // RUN: %clang_cc1 %s -triple wasm32-unknown-unknown -fms-extensions -fexceptions -fcxx-exceptions -mllvm -wasm-enable-eh -exception-model=wasm -target-feature +exception-handling -emit-llvm -o - -std=c++11 | FileCheck %s // RUN: %clang_cc1 %s -triple wasm64-unknown-unknown -fms-extensions -fexceptions -fcxx-exceptions -mllvm -wasm-enable-eh -exception-model=wasm -target-feature +exception-handling -emit-llvm -o - -std=c++11 | FileCheck %s `````````` </details> https://github.com/llvm/llvm-project/pull/92604 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
