1 ; RUN: llc -mtriple=x86_64-unknown-linux < %s | FileCheck -check-prefix X8664 %s 2 ; RUN: llc -mtriple=i686-unknown-linux < %s | FileCheck -check-prefix X8632 %s 3 ; Check that all callee-saved registers are saved and restored in functions 4 ; that call __builtin_unwind_init(). This is its undocumented behavior in gcc, 5 ; and it is used in compiling libgcc_eh. 6 ; See also PR8541 7 8 declare void @llvm.eh.unwind.init() 9 10 define void @calls_unwind_init() { 11 call void @llvm.eh.unwind.init() 12 ret void 13 } 14 15 ; X8664-LABEL: calls_unwind_init: 16 ; X8664: pushq %rbp 17 ; X8664: pushq %r15 18 ; X8664: pushq %r14 19 ; X8664: pushq %r13 20 ; X8664: pushq %r12 21 ; X8664: pushq %rbx 22 ; X8664: popq %rbx 23 ; X8664: popq %r12 24 ; X8664: popq %r13 25 ; X8664: popq %r14 26 ; X8664: popq %r15 27 28 ; X8632-LABEL: calls_unwind_init: 29 ; X8632: pushl %ebp 30 ; X8632: pushl %ebx 31 ; X8632: pushl %edi 32 ; X8632: pushl %esi 33 ; X8632: popl %esi 34 ; X8632: popl %edi 35 ; X8632: popl %ebx 36 ; X8632: popl %ebp 37
