================
@@ -589,6 +621,113 @@ void LoweringPreparePass::lowerUnaryOp(cir::UnaryOp op) {
op.erase();
}
+cir::FuncOp
+LoweringPreparePass::buildCXXGlobalVarDeclInitFunc(cir::GlobalOp op) {
+ // TODO(cir): Store this in the GlobalOp.
+ // This should come from the MangleContext, but for now I'm hardcoding it.
+ SmallString<256> fnName("__cxx_global_var_init");
+ // Get a unique name
+ uint32_t cnt = dynamicInitializerNames[fnName]++;
+ if (cnt)
+ fnName += "." + llvm::Twine(cnt).str();
+
+ // Create a variable initialization function.
+ CIRBaseBuilderTy builder(getContext());
+ builder.setInsertionPointAfter(op);
+ auto voidTy = cir::VoidType::get(builder.getContext());
+ auto fnType = cir::FuncType::get({}, voidTy);
+ FuncOp f = buildRuntimeFunction(builder, fnName, op.getLoc(), fnType,
+ cir::GlobalLinkageKind::InternalLinkage);
+
+ // Move over the initialzation code of the ctor region.
+ mlir::Block *entryBB = f.addEntryBlock();
+ if (!op.getCtorRegion().empty()) {
+ mlir::Block &block = op.getCtorRegion().front();
+ entryBB->getOperations().splice(entryBB->begin(), block.getOperations(),
+ block.begin(), std::prev(block.end()));
+ }
+
+ // Register the destructor call with __cxa_atexit
+ auto &dtorRegion = op.getDtorRegion();
+ if (!dtorRegion.empty()) {
+ assert(!cir::MissingFeatures::opGlobalDtorLowering());
+ llvm_unreachable("dtor region lowering is NYI");
+ }
+
+ // Replace cir.yield with cir.return
+ builder.setInsertionPointToEnd(entryBB);
+ mlir::Operation *yieldOp = nullptr;
+ if (!op.getCtorRegion().empty()) {
+ mlir::Block &block = op.getCtorRegion().front();
+ yieldOp = &block.getOperations().back();
+ } else {
+ assert(!cir::MissingFeatures::opGlobalDtorLowering());
+ llvm_unreachable("dtor region lowering is NYI");
+ }
+
+ assert(isa<YieldOp>(*yieldOp));
+ builder.create<ReturnOp>(yieldOp->getLoc());
----------------
AmrDeveloper wrote:
```suggestion
cir::ReturnOp::create(builder, yieldOp->getLoc());
```
https://github.com/llvm/llvm-project/pull/161452
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