1*9880d681SAndroid Build Coastguard Worker; RUN: llc -mtriple=x86_64-unknown-linux < %s | FileCheck -check-prefix X8664 %s 2*9880d681SAndroid Build Coastguard Worker; RUN: llc -mtriple=i686-unknown-linux < %s | FileCheck -check-prefix X8632 %s 3*9880d681SAndroid Build Coastguard Worker; Check that all callee-saved registers are saved and restored in functions 4*9880d681SAndroid Build Coastguard Worker; that call __builtin_unwind_init(). This is its undocumented behavior in gcc, 5*9880d681SAndroid Build Coastguard Worker; and it is used in compiling libgcc_eh. 6*9880d681SAndroid Build Coastguard Worker; See also PR8541 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.eh.unwind.init() 9*9880d681SAndroid Build Coastguard Worker 10*9880d681SAndroid Build Coastguard Workerdefine void @calls_unwind_init() { 11*9880d681SAndroid Build Coastguard Worker call void @llvm.eh.unwind.init() 12*9880d681SAndroid Build Coastguard Worker ret void 13*9880d681SAndroid Build Coastguard Worker} 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Worker; X8664-LABEL: calls_unwind_init: 16*9880d681SAndroid Build Coastguard Worker; X8664: pushq %rbp 17*9880d681SAndroid Build Coastguard Worker; X8664: pushq %r15 18*9880d681SAndroid Build Coastguard Worker; X8664: pushq %r14 19*9880d681SAndroid Build Coastguard Worker; X8664: pushq %r13 20*9880d681SAndroid Build Coastguard Worker; X8664: pushq %r12 21*9880d681SAndroid Build Coastguard Worker; X8664: pushq %rbx 22*9880d681SAndroid Build Coastguard Worker; X8664: popq %rbx 23*9880d681SAndroid Build Coastguard Worker; X8664: popq %r12 24*9880d681SAndroid Build Coastguard Worker; X8664: popq %r13 25*9880d681SAndroid Build Coastguard Worker; X8664: popq %r14 26*9880d681SAndroid Build Coastguard Worker; X8664: popq %r15 27*9880d681SAndroid Build Coastguard Worker 28*9880d681SAndroid Build Coastguard Worker; X8632-LABEL: calls_unwind_init: 29*9880d681SAndroid Build Coastguard Worker; X8632: pushl %ebp 30*9880d681SAndroid Build Coastguard Worker; X8632: pushl %ebx 31*9880d681SAndroid Build Coastguard Worker; X8632: pushl %edi 32*9880d681SAndroid Build Coastguard Worker; X8632: pushl %esi 33*9880d681SAndroid Build Coastguard Worker; X8632: popl %esi 34*9880d681SAndroid Build Coastguard Worker; X8632: popl %edi 35*9880d681SAndroid Build Coastguard Worker; X8632: popl %ebx 36*9880d681SAndroid Build Coastguard Worker; X8632: popl %ebp 37