Nathan =?utf-8?q?Gauër?= <brio...@google.com>,
Nathan =?utf-8?q?Gauër?= <brio...@google.com>,
Nathan =?utf-8?q?Gauër?= <brio...@google.com>,
Nathan =?utf-8?q?Gauër?= <brio...@google.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/80...@github.com>
================
@@ -1130,8 +1130,96 @@ struct BitTest {
static BitTest decodeBitTestBuiltin(unsigned BuiltinID);
};
+
+// Returns the first convergence entry/loop/anchor instruction found in |BB|.
+// std::nullopt otherwise.
+std::optional<llvm::IntrinsicInst *> getConvergenceToken(llvm::BasicBlock *BB)
{
+ for (auto &I : *BB) {
----------------
ssahasra wrote:
This kind of map will be needed in more places as we continue to introduces
uses of these convergence tokens. I have a simple Analysis in my upstreaming
pipeline that produces such a map, but it's really very simple. You can wait
for that, or just feel free to start your own.
https://github.com/llvm/llvm-project/pull/80680
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