[PATCH] D45186: [InstCombine] Don't optimize call target casts inside thunks

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp:4011
+  if (CI && CI->isMustTailCall() &&
+      CI->getParent()->getParent()->hasFnAttribute("thunk"))
+    return false;
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Why does it matter whether the function is a thunk?  It seems like this would be a problem for any musttail call.


https://reviews.llvm.org/D45186