diff options
Diffstat (limited to 'lib/VMCore/Function.cpp')
-rw-r--r-- | lib/VMCore/Function.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/VMCore/Function.cpp b/lib/VMCore/Function.cpp index 975ec83b4d..a6128b0cad 100644 --- a/lib/VMCore/Function.cpp +++ b/lib/VMCore/Function.cpp @@ -411,4 +411,19 @@ bool Function::hasAddressTaken(const User* *PutOffender) const { return false; } +/// callsFunctionThatReturnsTwice - Return true if the function has a call to +/// setjmp or other function that gcc recognizes as "returning twice". +bool Function::callsFunctionThatReturnsTwice() const { + for (const_inst_iterator + I = inst_begin(this), E = inst_end(this); I != E; ++I) { + const CallInst* callInst = dyn_cast<CallInst>(&*I); + if (!callInst) + continue; + if (callInst->canReturnTwice()) + return true; + } + + return false; +} + // vim: sw=2 ai |