[PATCH] D78659: Add nomerge function attribute to supress tail merge optimization in simplifyCFG

[Zequan Wu via Phabricator via cfe-commits]

zequanwu added a comment.

In D78659#1997528 <https://reviews.llvm.org/D78659#1997528>, @lebedev.ri wrote:

> 1. Tests missing
> 2. Why isn't `noinline` sufficient, why a whole new attribue?




1. Test added.
2. We want to avoid merging multiple call sites of same function, but `noinline` cannot achieve this. For example, we don't want to merge calls in `i == 5` and `i == 7` cases in the test case.


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https://reviews.llvm.org/D78659