diff options
Diffstat (limited to 'lib/CodeGen/CGCXXABI.cpp')
-rw-r--r-- | lib/CodeGen/CGCXXABI.cpp | 31 |
1 files changed, 1 insertions, 30 deletions
diff --git a/lib/CodeGen/CGCXXABI.cpp b/lib/CodeGen/CGCXXABI.cpp index e29e525edd..033258643d 100644 --- a/lib/CodeGen/CGCXXABI.cpp +++ b/lib/CodeGen/CGCXXABI.cpp @@ -30,38 +30,9 @@ void CGCXXABI::ErrorUnsupportedABI(CodeGenFunction &CGF, StringRef S) { } bool CGCXXABI::canCopyArgument(const CXXRecordDecl *RD) const { - // If RD has a non-trivial move or copy constructor, we cannot copy the - // argument. - if (RD->hasNonTrivialCopyConstructor() || RD->hasNonTrivialMoveConstructor()) - return false; - - // If RD has a non-trivial destructor, we cannot copy the argument. - if (RD->hasNonTrivialDestructor()) - return false; - // We can only copy the argument if there exists at least one trivial, // non-deleted copy or move constructor. - // FIXME: This assumes that all lazily declared copy and move constructors are - // not deleted. This assumption might not be true in some corner cases. - bool CopyDeleted = false; - bool MoveDeleted = false; - for (const CXXConstructorDecl *CD : RD->ctors()) { - if (CD->isCopyConstructor() || CD->isMoveConstructor()) { - assert(CD->isTrivial()); - // We had at least one undeleted trivial copy or move ctor. Return - // directly. - if (!CD->isDeleted()) - return true; - if (CD->isCopyConstructor()) - CopyDeleted = true; - else - MoveDeleted = true; - } - } - - // If all trivial copy and move constructors are deleted, we cannot copy the - // argument. - return !(CopyDeleted && MoveDeleted); + return RD->canPassInRegisters(); } llvm::Constant *CGCXXABI::GetBogusMemberPointer(QualType T) { |