diff options
Diffstat (limited to 'clang/lib/CodeGen/ItaniumCXXABI.cpp')
| -rw-r--r-- | clang/lib/CodeGen/ItaniumCXXABI.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp index 9a2076d95ae..1648c3bf852 100644 --- a/clang/lib/CodeGen/ItaniumCXXABI.cpp +++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp @@ -244,6 +244,11 @@ public: llvm::Value *readArrayCookieImpl(CodeGenFunction &CGF, llvm::Value *allocPtr, CharUnits cookieSize) override; }; + +class iOS64CXXABI : public ARMCXXABI { +public: + iOS64CXXABI(CodeGen::CodeGenModule &CGM) : ARMCXXABI(CGM) {} +}; } CodeGen::CGCXXABI *CodeGen::CreateItaniumCXXABI(CodeGenModule &CGM) { @@ -254,6 +259,9 @@ CodeGen::CGCXXABI *CodeGen::CreateItaniumCXXABI(CodeGenModule &CGM) { case TargetCXXABI::iOS: return new ARMCXXABI(CGM); + case TargetCXXABI::iOS64: + return new iOS64CXXABI(CGM); + // Note that AArch64 uses the generic ItaniumCXXABI class since it doesn't // include the other 32-bit ARM oddities: constructor/destructor return values // and array cookies. @@ -1415,6 +1423,13 @@ void ItaniumCXXABI::EmitGuardedInit(CodeGenFunction &CGF, // __cxa_guard_release (&obj_guard); // } // } + + // ARM64 C++ ABI 3.2.2: + // This ABI instead only specifies the value bit 0 of the static guard + // variable; all other bits are platform defined. Bit 0 shall be 0 when the + // variable is not initialized and 1 when it is. + // FIXME: Reading one bit is no more efficient than reading one byte so + // the codegen is same as generic Itanium ABI. } else { // Load the first byte of the guard variable. llvm::LoadInst *LI = |
