From c10f9e73033f5ee95b1dc6b0c6de52a74b718ab6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20G=C3=B6rdes?= <michael.goerdes@fau.de>
Date: Sun, 20 Feb 2022 09:26:11 +0100
Subject: [PATCH] Prevent basic blocks without name
---
lib/IR/Value.cpp | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/lib/IR/Value.cpp b/lib/IR/Value.cpp
index 295d6ecf0db..5723cd63271 100644
--- a/lib/IR/Value.cpp
+++ b/lib/IR/Value.cpp
@@ -293,6 +293,15 @@ void Value::setNameImpl(const Twine &NewName) {
}
void Value::setName(const Twine &NewName) {
+ // Prevent basic blocks without name
+ if (BasicBlock *BB = dyn_cast<BasicBlock>(this))
+ if (NewName.isTriviallyEmpty()) {
+ static int unnamedCounter = 0;
+ std::string bbName = "unnamed_BB_" + std::to_string(unnamedCounter++);
+ setNameImpl(bbName);
+ return; // Asumption: we are not a function if we are a basic block
+ }
+
setNameImpl(NewName);
if (Function *F = dyn_cast<Function>(this))
F->recalculateIntrinsicID();
--
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