| ; RUN: llc -mtriple=x86_64-unknown-linux < %s | FileCheck -check-prefix X8664 %s | |
| ; RUN: llc -mtriple=i686-unknown-linux < %s | FileCheck -check-prefix X8632 %s | |
| ; Check that all callee-saved registers are saved and restored in functions | |
| ; that call __builtin_unwind_init(). This is its undocumented behavior in gcc, | |
| ; and it is used in compiling libgcc_eh. | |
| ; See also PR8541 | |
| declare void @llvm.eh.unwind.init() | |
| define void @calls_unwind_init() { | |
| call void @llvm.eh.unwind.init() | |
| ret void | |
| } | |
| ; X8664-LABEL: calls_unwind_init: | |
| ; X8664: pushq %rbp | |
| ; X8664: pushq %r15 | |
| ; X8664: pushq %r14 | |
| ; X8664: pushq %r13 | |
| ; X8664: pushq %r12 | |
| ; X8664: pushq %rbx | |
| ; X8664: popq %rbx | |
| ; X8664: popq %r12 | |
| ; X8664: popq %r13 | |
| ; X8664: popq %r14 | |
| ; X8664: popq %r15 | |
| ; X8632-LABEL: calls_unwind_init: | |
| ; X8632: pushl %ebp | |
| ; X8632: pushl %ebx | |
| ; X8632: pushl %edi | |
| ; X8632: pushl %esi | |
| ; X8632: popl %esi | |
| ; X8632: popl %edi | |
| ; X8632: popl %ebx | |
| ; X8632: popl %ebp |