================
@@ -155,6 +155,29 @@ RValue
CodeGenFunction::EmitNVPTXDevicePrintfCallExpr(const CallExpr *E) {
E, this, GetVprintfDeclaration(CGM.getModule()), false);
}
+// Collects the constant global variables that \p S refers to.
+static void
+collectReferencedGlobalVars(const ASTContext &Ctx, const Stmt *S,
+ SmallVectorImpl<const VarDecl *> &Vars) {
+ if (!S)
+ return;
+ const ValueDecl *D = nullptr;
+ if (const auto *DRE = dyn_cast<DeclRefExpr>(S)) {
+ if (DRE->isNonOdrUse() == NOUR_None)
+ D = DRE->getDecl();
+ } else if (const auto *ME = dyn_cast<MemberExpr>(S)) {
+ if (ME->isNonOdrUse() == NOUR_None)
+ D = ME->getMemberDecl();
+ }
+ if (const auto *VD = dyn_cast_if_present<VarDecl>(D))
+ if (VD->hasGlobalStorage() && !VD->isStaticLocal() &&
+ VD->getType().isConstantStorage(Ctx, /*ExcludeCtor=*/true,
+ /*ExcludeDtor=*/true))
+ Vars.push_back(VD);
+ for (const Stmt *Child : S->children())
+ collectReferencedGlobalVars(Ctx, Child, Vars);
----------------
ssahasra wrote:
Can we replace this recursion with a worklist?
https://github.com/llvm/llvm-project/pull/231967
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