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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
; RUN: opt < %s -instcombine -S | FileCheck %s
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc18.0.0"
declare i32 @__CxxFrameHandler3(...)
define void @test1() personality i32 (...)* @__CxxFrameHandler3 {
bb:
unreachable
unreachable:
%cl = cleanuppad []
cleanupret %cl unwind to caller
}
; CHECK-LABEL: define void @test1(
; CHECK: unreachable:
; CHECK: %cl = cleanuppad []
; CHECK: cleanupret %cl unwind to caller
define void @test2(i8 %A, i8 %B) personality i32 (...)* @__CxxFrameHandler3 {
bb:
%X = zext i8 %A to i32
invoke void @g(i32 0)
to label %cont
unwind label %catch
cont:
%Y = zext i8 %B to i32
invoke void @g(i32 0)
to label %unreachable
unwind label %catch
catch:
%phi = phi i32 [ %X, %bb ], [ %Y, %cont ]
%cl = catchpad []
to label %doit
unwind label %endpad
doit:
call void @g(i32 %phi)
unreachable
unreachable:
unreachable
endpad:
catchendpad unwind to caller
}
; CHECK-LABEL: define void @test2(
; CHECK: %X = zext i8 %A to i32
; CHECK: %Y = zext i8 %B to i32
; CHECK: %phi = phi i32 [ %X, %bb ], [ %Y, %cont ]
define void @test3(i8 %A, i8 %B) personality i32 (...)* @__CxxFrameHandler3 {
bb:
%X = zext i8 %A to i32
invoke void @g(i32 0)
to label %cont
unwind label %catch
cont:
%Y = zext i8 %B to i32
invoke void @g(i32 0)
to label %cont2
unwind label %catch
cont2:
invoke void @g(i32 0)
to label %unreachable
unwind label %catch
catch:
%phi = phi i32 [ %X, %bb ], [ %Y, %cont ], [ %Y, %cont2 ]
%cl = catchpad []
to label %doit
unwind label %endpad
doit:
call void @g(i32 %phi)
unreachable
unreachable:
unreachable
endpad:
catchendpad unwind to caller
}
; CHECK-LABEL: define void @test3(
; CHECK: %X = zext i8 %A to i32
; CHECK: %Y = zext i8 %B to i32
; CHECK: %phi = phi i32 [ %X, %bb ], [ %Y, %cont ], [ %Y, %cont2 ]
declare void @g(i32)
|
