[llvm] [FuncAttrs][LTO] Relax norecurse attribute inference during postlink LTO (PR #158608)

[David Sherwood via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes --version 5
+; RUN: opt < %s -passes=norecurse-lto-inference -S | FileCheck %s
+
+; This test includes a call graph with a self recursive function.
+; The purpose of this is to check that norecurse is added to functions
+; which have a self-recursive function in the call-chain.
+; The call-chain in this test is as follows
+; main -> bob -> callee1 -> callee2 -> callee3 -> callee4 -> callee5
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david-arm wrote:

I think you can probably move some of the intermediate callees (i.e. callee1 - callee3) between main and callee5 as they don't really add much value.

https://github.com/llvm/llvm-project/pull/158608