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If the function being inlined has a higher stack protection level than the

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inlining function, then increase the stack protection level on the inlining
function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59757 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2008-11-21 00:06:32 +00:00
parent e6ed6ecfb0
commit 8c1604e7d6
1 changed files with 9 additions and 0 deletions
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9
lib/Transforms/IPO/Inliner.cpp
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@ -56,6 +56,15 @@ static bool InlineCallIfPossible(CallSite CS, CallGraph &CG,
Function *Callee = CS.getCalledFunction(); Function *Callee = CS.getCalledFunction();
if (!InlineFunction(CS, &CG, &TD)) return false; if (!InlineFunction(CS, &CG, &TD)) return false;
// If the inlined function had a higher stack protection level than the
// calling function, then bump up the caller's stack protection level.
Function *Caller = CS.getCaller();
if (Callee->hasFnAttr(Attribute::StackProtectReq))
Caller->addFnAttr(Attribute::StackProtectReq);
else if (Callee->hasFnAttr(Attribute::StackProtect) &&
!Caller->hasFnAttr(Attribute::StackProtectReq))
Caller->addFnAttr(Attribute::StackProtect);
// If we inlined the last possible call site to the function, delete the // If we inlined the last possible call site to the function, delete the
// function body now. // function body now.
if (Callee->use_empty() && Callee->hasInternalLinkage() && if (Callee->use_empty() && Callee->hasInternalLinkage() &&