Update codegen_very_large_allocation.swift

Author: xwu

test/IRGen/temporary_allocation/codegen_very_large_allocation.swift

@@ -24,5 +24,5 @@ withUnsafeTemporaryAllocation(byteCount: 0x0FFF_FFFF, alignment: 1) { buffer in
 
 // CHECK-LARGE-ALLOC-DAG: [[IS_SAFE:%[0-9]+]] = {{(tail )?}}call {{(zeroext )?}}i1 @swift_stdlib_isStackAllocationSafe([[WORD]] 268435455, [[WORD]] 1)
 // CHECK-LARGE-ALLOC-DAG: br i1 [[IS_SAFE]], label %{{[0-9]+}}, label %{{[0-9]+}}
-// CHECK-LARGE-ALLOC-apple-DAG: [[IS_OS_OK:%[0-9]+]] = call swiftcc i1 @"$ss26_stdlib_isOSVersionAtLeastyBi1_Bw_BwBwtF"
+// CHECK-LARGE-ALLOC-apple-DAG: [[IS_OS_OK:%[0-9]+]] = {{(tail )?}}call swiftcc i1 @"$ss26_stdlib_isOSVersionAtLeastyBi1_Bw_BwBwtF"
 // CHECK-LARGE-ALLOC-apple-DAG: br i1 [[IS_OS_OK]], label %{{[0-9]+}}, label %{{[0-9]+}}