| # RUN: llvm-mc -triple x86_64-unknown-unknown %s --validate-cfi --filetype=null 2>&1 | FileCheck %s  | 
 | # RUN: llvm-mc -triple x86_64-unknown-unknown %s --filetype=asm 2>&1 | FileCheck %s -check-prefix=ASSEMBLER --implicit-check-not warning: --implicit-check-not error: | 
 | # ASSEMBLER: .text | 
 |         .text | 
 |         .globl  f | 
 |         .type   f,@function | 
 | f: | 
 |         .cfi_startproc | 
 |  | 
 |         ## TODO: Remove these lines when the initial frame directives set the callee saved registers | 
 |         .cfi_undefined %rax | 
 |         .cfi_undefined %flags | 
 |  | 
 |         pushq   %rbp | 
 |         # CHECK: warning: CFA offset is changed from 8 to 17, and CFA register RSP is modified, but validating the modification amount is not implemented yet | 
 |         # CHECK: warning: validating changes happening to register RBP unwinding rule structure is not implemented yet | 
 |         .cfi_def_cfa_offset 17 | 
 |         .cfi_offset %rbp, -16 | 
 |  | 
 |         movq    %rsp, %rbp | 
 |         # CHECK:  warning: CFA register changed from register RSP to register RBP, validating this change is not implemented yet | 
 |         .cfi_def_cfa_register %rbp | 
 |  | 
 |         movl    %edi, -4(%rbp) | 
 |  | 
 |         movl    -4(%rbp), %eax | 
 |  | 
 |         addl    $10, %eax | 
 |  | 
 |         popq    %rbp | 
 |         # CHECK: warning: CFA register changed from register RBP to register RSP, validating this change is not implemented yet | 
 |         .cfi_def_cfa %rsp, 8 | 
 |  | 
 |         retq | 
 |  | 
 | .Lfunc_end0: | 
 |         .size   f, .Lfunc_end0-f | 
 |  | 
 |         .cfi_endproc |