1; Check that eh_return & unwind_init were properly lowered
2; RUN: llc < %s -verify-machineinstrs | FileCheck %s
3
4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
5target triple = "x86_64-unknown-linux-gnu"
6
7; CHECK: test
8; CHECK: pushq %rbp
9; CHECK: movq %rsp, %rbp
10; CHECK: popq %rbp
11; CHECK: movq %rcx, %rsp
12; CHECK: ret # eh_return, addr: %rcx
13define i8* @test(i64 %a, i8* %b)  {
14entry:
15  call void @llvm.eh.unwind.init()
16  %foo   = alloca i32
17  call void @llvm.eh.return.i64(i64 %a, i8* %b)
18  unreachable
19}
20
21declare void @llvm.eh.return.i64(i64, i8*)
22declare void @llvm.eh.unwind.init()
23
24@b = common global i32 0, align 4
25@a = common global i32 0, align 4
26
27; PR14750
28; This function contains a normal return as well as eh_return.
29; CHECK: _Unwind_Resume_or_Rethrow
30define i32 @_Unwind_Resume_or_Rethrow() nounwind uwtable ssp {
31entry:
32  %0 = load i32* @b, align 4
33  %tobool = icmp eq i32 %0, 0
34  br i1 %tobool, label %if.end, label %if.then
35
36if.then:                                          ; preds = %entry
37  ret i32 0
38
39if.end:                                           ; preds = %entry
40  %call = tail call i32 (...)* @_Unwind_ForcedUnwind_Phase2() nounwind
41  store i32 %call, i32* @a, align 4
42  %tobool1 = icmp eq i32 %call, 0
43  br i1 %tobool1, label %cond.end, label %cond.true
44
45cond.true:                                        ; preds = %if.end
46  tail call void @abort() noreturn nounwind
47  unreachable
48
49cond.end:                                         ; preds = %if.end
50  tail call void @llvm.eh.return.i64(i64 0, i8* null)
51  unreachable
52}
53
54declare i32 @_Unwind_ForcedUnwind_Phase2(...)
55declare void @abort() noreturn
56