!isInTailCallPosition(CS, CS.getAttributes().getRetAttributes(), TLI))
isTailCall = false;
+ // If there's a possibility that fast-isel has already selected some amount
+ // of the current basic block, don't emit a tail call.
+ if (isTailCall && EnableFastISel)
+ isTailCall = false;
+
std::pair<SDValue,SDValue> Result =
TLI.LowerCallTo(getRoot(), RetTy,
CS.paramHasAttr(0, Attribute::SExt),
-; RUN: llc < %s -march=x86-64 -tailcallopt -fast-isel | grep TAILCALL
+; RUN: llc < %s -march=x86-64 -tailcallopt -fast-isel | not grep TAILCALL
-; Fast-isel shouldn't attempt to handle this tail call, and it should
-; cleanly terminate instruction selection in the block after it's
-; done to avoid emitting invalid MachineInstrs.
+; Fast-isel shouldn't attempt to cope with tail calls.
%0 = type { i64, i32, i8* }
%tmp20 = tail call fastcc i8* @"visit_array_aux<`Reference>"(%0 %arg, i32 undef) ; <i8*> [#uses=1]
ret i8* %tmp20
}
+
+define i32 @foo() nounwind {
+entry:
+ %0 = tail call i32 (...)* @bar() nounwind ; <i32> [#uses=1]
+ ret i32 %0
+}
+
+declare i32 @bar(...) nounwind