Missing Function and Call attributes

[ghehg]

CIR Codegen are missing function and call site attributes such as noalias, noundef, nonnull
example code

void test_basic() {
  __builtin_operator_delete(__builtin_operator_new(4));
}

Traditional clang (OG) generated code: like

 %call = call noalias noundef nonnull ptr @_Znwm(i64 noundef 4)
...
declare noundef nonnull ptr @_Znwm(i64 noundef)

Currently, CIR generates code like:

%1 = call ptr @_Znwm(i64 4)

declare !dbg !3 ptr @_Znwm(i64)

The difference may come from the fact [CIRGenModule::constructAttributeList] not finished (

clangir/clang/lib/CIR/CodeGen/CIRGenCall.cpp

Line 347 in 3d16a0f

void CIRGenModule::constructAttributeList(StringRef Name,

)
comparing to OG CodeGenModule::ConstructAttributeList