yonghong-song added a comment.
We have
llvm::DINode::DIFlags CGDebugInfo::getCallSiteRelatedAttrs() const {
// Call site-related attributes are only useful in optimized programs, and
// when there's a possibility of debugging backtraces.
if (!CGM.getLangOpts().Optimize || DebugKind == codegenoptions::NoDebugInfo
||
DebugKind == codegenoptions::LocTrackingOnly)
return llvm::DINode::FlagZero;
and `getCallSiteRelatedAttrs()` is used to check whether debuginfo
should be emitted or not by comparing to llvm::DINode::FlagZero,
// Do not emit a declaration subprogram for a builtin, a function with nodebug
// attribute, or if call site info isn't required. Also, elide declarations
// for functions with reserved names, as call site-related features aren't
// interesting in this case (& also, the compiler may emit calls to these
// functions without debug locations, which makes the verifier complain).
if (CalleeDecl->getBuiltinID() != 0 || CalleeDecl->hasAttr<NoDebugAttr>() ||
getCallSiteRelatedAttrs() == llvm::DINode::FlagZero)
return;
So looks like as long as the optimization is not on, the condition
`!CGM.getLangOpts().Optimize` will be true and the callsite debuginfo
will not be emitted.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D106618/new/
https://reviews.llvm.org/D106618
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