[llvm] [WPD]Regard unreachable function as a possible devirtualizable target (PR #115668)

[Teresa Johnson via llvm-commits]

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@@ -1,11 +1,15 @@
+; Test that static devirtualization doesn't happen because there are two
+; devirtualizable targets. Unreachable functions are kept in the devirtualizable
+; target set by default.
+; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s  --implicit-check-not="single-impl"
+
 ; Test that regular LTO will analyze IR, detect unreachable functions and discard unreachable functions
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teresajohnson wrote:

Note that this is only done under the -wholeprogramdevirt-keep-unreachable-function=false option

https://github.com/llvm/llvm-project/pull/115668