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The 'optnone' attribute means don't inline anything into this function

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(except functions marked always_inline).
Functions with 'optnone' must also have 'noinline' so they don't get
inlined into any other function.

Based on work by Andrea Di Biagio.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195046 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Paul Robinson
2013-11-18 21:44:03 +00:00
parent 3560dd2dcd
commit fe45fd084d
6 changed files with 67 additions and 10 deletions
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4
lib/Analysis/IPA/InlineCost.cpp
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@ -1206,6 +1206,10 @@ InlineCost InlineCostAnalysis::getInlineCost(CallSite CS, Function *Callee,
if (!functionsHaveCompatibleAttributes(CS.getCaller(), Callee))
return llvm::InlineCost::getNever();
// Don't inline this call if the caller has the optnone attribute.
if (CS.getCaller()->hasFnAttribute(Attribute::OptimizeNone))
return llvm::InlineCost::getNever();
// Don't inline functions which can be redefined at link-time to mean
// something else. Don't inline functions marked noinline or call sites
// marked noinline.