[llvm] [IR2Vec] Restrict caching only to Flow-Aware computation (PR #162559)

[Mircea Trofin via llvm-commits]

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@@ -30,13 +30,17 @@ return:                                           ; preds = %if.else, %if.then
   %4 = load i32, ptr %retval, align 4
   ret i32 %4
 }
-
-; CHECK: Basic block vectors:
+; We'll get individual basic block embeddings for all blocks in the function.
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mtrofin wrote:

why would removing caching change this?

https://github.com/llvm/llvm-project/pull/162559