diff options
Diffstat (limited to 'clang/lib/CodeGen')
| -rw-r--r-- | clang/lib/CodeGen/CGCall.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp index 3db23f2bcb7..b40fa9d93d4 100644 --- a/clang/lib/CodeGen/CGCall.cpp +++ b/clang/lib/CodeGen/CGCall.cpp @@ -1743,6 +1743,25 @@ void CodeGenFunction::EmitFunctionProlog(const CGFunctionInfo &FI, AI->getArgNo() + 1, llvm::Attribute::NonNull)); } + + const auto *AVAttr = PVD->getAttr<AlignValueAttr>(); + if (!AVAttr) + if (const auto *TOTy = dyn_cast<TypedefType>(OTy)) + AVAttr = TOTy->getDecl()->getAttr<AlignValueAttr>(); + if (AVAttr) { + llvm::Value *AlignmentValue = + EmitScalarExpr(AVAttr->getAlignment()); + llvm::ConstantInt *AlignmentCI = + cast<llvm::ConstantInt>(AlignmentValue); + unsigned Alignment = + std::min((unsigned) AlignmentCI->getZExtValue(), + +llvm::Value::MaximumAlignment); + + llvm::AttrBuilder Attrs; + Attrs.addAlignmentAttr(Alignment); + AI->addAttr(llvm::AttributeSet::get(getLLVMContext(), + AI->getArgNo() + 1, Attrs)); + } } if (Arg->getType().isRestrictQualified()) |
