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