1*9ff2eb1eSTim Northover; RUN: not --crash llc -mtriple=thumbv7k-apple-ios %s -o - 2>&1 | FileCheck %s 2*9ff2eb1eSTim Northover 3*9ff2eb1eSTim Northover; CHECK: LLVM ERROR: failed to perform tail call elimination on a call site marked musttail 4*9ff2eb1eSTim Northoverdeclare tailcc [16 x i64] @callee() 5*9ff2eb1eSTim Northoverdefine tailcc [16 x i64] @caller() { 6*9ff2eb1eSTim Northover %res = musttail call tailcc [16 x i64] @callee() 7*9ff2eb1eSTim Northover ret [16 x i64] %res 8*9ff2eb1eSTim Northover} 9