diff options
Diffstat (limited to 'clang/lib/Driver/Tools.cpp')
| -rw-r--r-- | clang/lib/Driver/Tools.cpp | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp index 0236e613a37..15849912409 100644 --- a/clang/lib/Driver/Tools.cpp +++ b/clang/lib/Driver/Tools.cpp @@ -4176,8 +4176,11 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA, CmdArgs.push_back("-generate-type-units"); } - // CloudABI uses -ffunction-sections and -fdata-sections by default. - bool UseSeparateSections = Triple.getOS() == llvm::Triple::CloudABI; + // CloudABI and WebAssembly use -ffunction-sections and -fdata-sections by + // default. + bool UseSeparateSections = Triple.getOS() == llvm::Triple::CloudABI || + Triple.getArch() == llvm::Triple::wasm32 || + Triple.getArch() == llvm::Triple::wasm64; if (Args.hasFlag(options::OPT_ffunction_sections, options::OPT_fno_function_sections, UseSeparateSections)) { @@ -6536,7 +6539,9 @@ void wasm::Linker::ConstructJob(Compilation &C, const JobAction &JA, CmdArgs.push_back("ld"); // Enable garbage collection of unused input sections by default, since code - // size is of particular importance. + // size is of particular importance. This is significantly facilitated by + // the enabling of -ffunction-sections and -fdata-sections in + // Clang::ConstructJob. if (areOptimizationsEnabled(Args)) CmdArgs.push_back("--gc-sections"); |
