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
|
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu | 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-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
define void @foo(i32* %P) #0 {
entry:
%tobool = icmp eq i32* %P, null
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
store i32 0, i32* %P, align 4
br label %if.end
if.end: ; preds = %entry, %if.then
ret void
; CHECK: @foo
; CHECK: beqlr
; CHECK: blr
}
define void @bar(i32* %P, i32* %Q) #0 {
entry:
%tobool = icmp eq i32* %P, null
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %entry
store i32 0, i32* %P, align 4
%tobool1 = icmp eq i32* %Q, null
br i1 %tobool1, label %if.end3, label %if.then2
if.then2: ; preds = %if.then
store i32 1, i32* %Q, align 4
br label %if.end3
if.else: ; preds = %entry
store i32 0, i32* %Q, align 4
br label %if.end3
if.end3: ; preds = %if.then, %if.then2, %if.else
ret void
; CHECK: @bar
; CHECK: beqlr
; CHECK: blr
}
@.str0 = private unnamed_addr constant [2 x i8] c"a\00"
@.str1 = private unnamed_addr constant [2 x i8] c"b\00"
@.str2 = private unnamed_addr constant [2 x i8] c"c\00"
@.str3 = private unnamed_addr constant [2 x i8] c"d\00"
@.str4 = private unnamed_addr constant [2 x i8] c"e\00"
define i8* @dont_assert(i32 %x) {
; LLVM would assert due to moving an early return into the jump table block and
; removing one of its predecessors despite that block ending with an indirect
; branch.
entry:
switch i32 %x, label %sw.epilog [
i32 1, label %return
i32 2, label %sw.bb1
i32 3, label %sw.bb2
i32 4, label %sw.bb3
i32 255, label %sw.bb4
]
sw.bb1: br label %return
sw.bb2: br label %return
sw.bb3: br label %return
sw.bb4: br label %return
sw.epilog: br label %return
return:
%retval.0 = phi i8* [ null, %sw.epilog ],
[ getelementptr inbounds ([2 x i8], [2 x i8]* @.str4, i64 0, i64 0), %sw.bb4 ],
[ getelementptr inbounds ([2 x i8], [2 x i8]* @.str3, i64 0, i64 0), %sw.bb3 ],
[ getelementptr inbounds ([2 x i8], [2 x i8]* @.str2, i64 0, i64 0), %sw.bb2 ],
[ getelementptr inbounds ([2 x i8], [2 x i8]* @.str1, i64 0, i64 0), %sw.bb1 ],
[ getelementptr inbounds ([2 x i8], [2 x i8]* @.str0, i64 0, i64 0), %entry ]
ret i8* %retval.0
}
attributes #0 = { nounwind }
|
