++AI; // Skip the sret parameter.
}
+ // Get the function-level nonnull attribute if it exists.
+ const NonNullAttr *NNAtt =
+ CurCodeDecl ? CurCodeDecl->getAttr<NonNullAttr>() : nullptr;
+
// Track if we received the parameter as a pointer (indirect, byval, or
// inalloca). If already have a pointer, EmitParmDecl doesn't need to copy it
// into a local alloca for us.
assert(AI != Fn->arg_end() && "Argument mismatch!");
llvm::Value *V = AI;
+ if (const ParmVarDecl *PVD = dyn_cast<ParmVarDecl>(Arg))
+ if ((NNAtt && NNAtt->isNonNull(PVD->getFunctionScopeIndex())) ||
+ PVD->hasAttr<NonNullAttr>())
+ AI->addAttr(llvm::AttributeSet::get(getLLVMContext(),
+ AI->getArgNo() + 1,
+ llvm::Attribute::NonNull));
+
if (Arg->getType().isRestrictQualified())
AI->addAttr(llvm::AttributeSet::get(getLLVMContext(),
AI->getArgNo() + 1,
--- /dev/null
+// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm < %s | FileCheck %s
+
+// CHECK: define void @foo(i32* nonnull %x)
+void foo(int * __attribute__((nonnull)) x) {
+ *x = 0;
+}
+
+// CHECK: define void @bar(i32* nonnull %x)
+void bar(int * x) __attribute__((nonnull(1))) {
+ *x = 0;
+}
+
+// CHECK: define void @bar2(i32* %x, i32* nonnull %y)
+void bar2(int * x, int * y) __attribute__((nonnull(2))) {
+ *x = 0;
+}
+