1 ; RUN: llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s 2 @var = global void()* zeroinitializer 3 4 declare void @bar() 5 6 define void @foo() { 7 ; CHECK-LABEL: foo: 8 %func = load void()** @var 9 10 ; Calling a function encourages @foo to use a callee-saved register, 11 ; which makes it a natural choice for the tail call itself. But we don't 12 ; want that: the final "br xN" has to use a temporary or argument 13 ; register. 14 call void @bar() 15 16 tail call void %func() 17 ; CHECK: br {{x([0-79]|1[0-8])}} 18 ret void 19 } 20
