[cfe-dev] Why optimize AvailableExternallyLinkage functions when codegenning?

Yaron Keren via cfe-dev cfe-dev at lists.llvm.org
Tue Sep 1 02:00:03 PDT 2015

AvailableExternallyLinkage functions are not emitted when codegenning, do
they really need to go through optimization passes?

I tried testing with

bool FPPassManager::runOnFunction(Function &F) {
  if (F.isDeclaration()* || F.hasAvailableExternallyLinkage()*)

which failed only one test, LLVM :: CodeGen/X86/hidden-vis-pic.ll, so there
is some issue which yet may be solved without doing all the passes.
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