[clang] [llvm] [WPD]: Apply speculative WPD in non-lto mode. (PR #145031)

[Hassnaa Hamdi via llvm-commits]

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+// Check that speculative devirtualization works without the need for LTO or visibility.
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hassnaaHamdi wrote:

I have separated the tests.
For testing using non-LTO pass pipeline, that will be postponed until I enable the WPD by default.

https://github.com/llvm/llvm-project/pull/145031