1; RUN: llc -o - %s | FileCheck %s 2; RUN: llc -global-isel -verify-machineinstrs -o - %s | FileCheck %s 3target triple="aarch64--" 4 5declare void @somefunc() 6define preserve_allcc void @test_ccmismatch_notail() { 7; Ensure that no tail call is used here, as the called function somefunc does 8; not preserve enough registers for preserve_allcc. 9; CHECK-LABEL: test_ccmismatch_notail: 10; CHECK-NOT: b somefunc 11; CHECK: bl somefunc 12 tail call void @somefunc() 13 ret void 14} 15 16declare preserve_allcc void @some_preserve_all_func() 17define void @test_ccmismatch_tail() { 18; We can perform a tail call here, because some_preserve_all_func preserves 19; all registers necessary for test_ccmismatch_tail. 20; CHECK-LABEL: test_ccmismatch_tail: 21; CHECK-NOT: bl some_preserve_all_func 22; CHECK: b some_preserve_all_func 23 tail call preserve_allcc void @some_preserve_all_func() 24 ret void 25} 26