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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
; RUN: llc < %s -march=bpf | FileCheck %s
@foo_printf.fmt = private unnamed_addr constant [9 x i8] c"hello \0A\00", align 1
; Function Attrs: nounwind readnone uwtable
define i32 @foo_int(i32 %a, i32 %b) #0 {
%1 = add nsw i32 %b, %a
ret i32 %1
; CHECK-LABEL: foo_int:
; CHECK: add r2, r1
}
; Function Attrs: nounwind readnone uwtable
define signext i8 @foo_char(i8 signext %a, i8 signext %b) #0 {
%1 = add i8 %b, %a
ret i8 %1
; CHECK-LABEL: foo_char:
; CHECK: add r2, r1
; CHECK: slli r2, 56
; CHECK: srai r2, 56
}
; Function Attrs: nounwind readnone uwtable
define i64 @foo_ll(i64 %a, i64 %b, i64 %c) #0 {
%1 = add nsw i64 %b, %a
%2 = sub i64 %1, %c
ret i64 %2
; CHECK-LABEL: foo_ll:
; CHECK: add r2, r1
; CHECK: sub r2, r3
; CHECK: mov r0, r2
}
; Function Attrs: nounwind uwtable
define void @foo_call2(i32 %a, i32 %b) #1 {
%1 = trunc i32 %b to i8
tail call void @foo_2arg(i8 signext %1, i32 %a) #3
ret void
; CHECK-LABEL: foo_call2:
; CHECK: slli r2, 56
; CHECK: srai r2, 56
; CHECK: mov r1, r2
}
declare void @foo_2arg(i8 signext, i32) #2
; Function Attrs: nounwind uwtable
define i32 @foo_call5(i8 signext %a, i16 signext %b, i32 %c, i64 %d) #1 {
%1 = tail call i32 @bar(i8 signext %a, i16 signext %b, i32 %c, i64 %d) #3
ret i32 0
; CHECK-LABEL: foo_call5:
; CHECK: call bar
}
declare i32 @bar(i8 signext, i16 signext, i32, i64) #2
; Function Attrs: nounwind readnone uwtable
define signext i8 @foo_cmp(i8 signext %a, i8 signext %b) #0 {
%1 = icmp slt i8 %a, %b
%a.b = select i1 %1, i8 %a, i8 %b
ret i8 %a.b
; CHECK-LABEL: foo_cmp:
; CHECK: jsgt r2, r1
}
; Function Attrs: nounwind readnone uwtable
define i32 @foo_muldiv(i8 signext %a, i16 signext %b, i32 %c, i64 %d) #0 {
%1 = icmp eq i8 %a, 0
br i1 %1, label %5, label %2
; <label>:2 ; preds = %0
%3 = sext i16 %b to i32
%4 = mul nsw i32 %3, %c
br label %8
; <label>:5 ; preds = %0
%6 = trunc i64 %d to i32
%7 = udiv i32 %6, %c
br label %8
; <label>:8 ; preds = %5, %2
%.0 = phi i32 [ %4, %2 ], [ %7, %5 ]
ret i32 %.0
; CHECK-LABEL: foo_muldiv:
; CHECK: mul r2, r3
}
; Function Attrs: nounwind uwtable
define i32 @foo_optimized() #1 {
%1 = tail call i32 @manyarg(i32 1, i32 2, i32 3, i32 4, i32 5) #3
ret i32 %1
; CHECK-LABEL: foo_optimized:
; CHECK: mov r1, 1
; CHECK: mov r2, 2
; CHECK: mov r3, 3
; CHECK: mov r4, 4
; CHECK: mov r5, 5
}
declare i32 @manyarg(i32, i32, i32, i32, i32) #2
; Function Attrs: nounwind uwtable
define void @foo_printf() #1 {
%fmt = alloca [9 x i8], align 1
%1 = getelementptr inbounds [9 x i8], [9 x i8]* %fmt, i64 0, i64 0
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @foo_printf.fmt, i64 0, i64 0), i64 9, i32 1, i1 false)
; CHECK-LABEL: foo_printf:
; CHECK: ld_64 r1, 729618802566522216
%2 = call i32 (i8*, ...)* @printf(i8* %1) #3
ret void
}
; Function Attrs: nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) #3
; Function Attrs: nounwind
declare i32 @printf(i8* nocapture, ...) #4
|
