From e3a4fb6512552a8de67097703b99997ceab2064a Mon Sep 17 00:00:00 2001 From: Oliver Stannard Date: Fri, 20 Jun 2014 12:43:07 +0000 Subject: Add module flags metadata to record the settings for enum and wchar width Add module flags metadata to record the settings for enum and wchar width, to allow correct ARM build attribute generation llvm-svn: 211354 --- clang/lib/CodeGen/CodeGenModule.cpp | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'clang/lib/CodeGen/CodeGenModule.cpp') diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp index 3c709f2..6e02342 100644 --- a/clang/lib/CodeGen/CodeGenModule.cpp +++ b/clang/lib/CodeGen/CodeGenModule.cpp @@ -352,6 +352,23 @@ void CodeGenModule::Release() { getModule().addModuleFlag(llvm::Module::Warning, "Debug Info Version", llvm::DEBUG_METADATA_VERSION); + // We need to record the widths of enums and wchar_t, so that we can generate + // the correct build attributes in the ARM backend. + llvm::Triple::ArchType Arch = Context.getTargetInfo().getTriple().getArch(); + if ( Arch == llvm::Triple::arm + || Arch == llvm::Triple::armeb + || Arch == llvm::Triple::thumb + || Arch == llvm::Triple::thumbeb) { + // Width of wchar_t in bytes + uint64_t WCharWidth = + Context.getTypeSizeInChars(Context.getWideCharType()).getQuantity(); + getModule().addModuleFlag(llvm::Module::Error, "wchar_size", WCharWidth); + + // The minimum width of an enum in bytes + uint64_t EnumWidth = Context.getLangOpts().ShortEnums ? 1 : 4; + getModule().addModuleFlag(llvm::Module::Error, "min_enum_size", EnumWidth); + } + SimplifyPersonality(); if (getCodeGenOpts().EmitDeclMetadata) -- cgit v1.1