Implement checking of the tail keyword.
llvm-svn: 104744
diff --git a/llvm/lib/Analysis/Lint.cpp b/llvm/lib/Analysis/Lint.cpp
index 25d4f95..8b38733 100644
--- a/llvm/lib/Analysis/Lint.cpp
+++ b/llvm/lib/Analysis/Lint.cpp
@@ -219,7 +219,15 @@
// TODO: Check sret attribute.
}
- // TODO: Check the "tail" keyword constraints.
+ if (CS.isCall() && cast<CallInst>(CS.getInstruction())->isTailCall())
+ for (CallSite::arg_iterator AI = CS.arg_begin(), AE = CS.arg_end();
+ AI != AE; ++AI) {
+ Value *Obj = (*AI)->getUnderlyingObject();
+ Assert1(!isa<AllocaInst>(Obj) && !isa<VAArgInst>(Obj),
+ "Undefined behavior: Call with \"tail\" keyword references "
+ "alloca or va_arg", &I);
+ }
+
if (IntrinsicInst *II = dyn_cast<IntrinsicInst>(&I))
switch (II->getIntrinsicID()) {