F.getAttributes().hasAttribute(AttributeSet::FunctionIndex,
Attribute::ReturnsTwice);
for (Function::iterator BI = F.begin(), BE = F.end(); BI != BE; ++BI) {
- // Disallow inlining of functions which contain an indirect branch.
- if (isa<IndirectBrInst>(BI->getTerminator()))
+ // Disallow inlining of functions which contain an indirect branch,
+ // unless the always_inline attribute is set.
+ // The attribute serves as a assertion that no local address
+ // like a block label can escpape the function.
+ // Revisit enabling inlining for functions with indirect branches
+ // when a more sophisticated espape/points-to analysis becomes available.
+ if (isa<IndirectBrInst>(BI->getTerminator()) &&
+ !F.hasFnAttribute(Attribute::AlwaysInline))
return false;
for (BasicBlock::iterator II = BI->begin(), IE = BI->end(); II != IE;