1; RUN: llc -mattr=mul,movw < %s -march=avr | FileCheck %s
2
3; Unsigned 8-bit division
4define i8 @udiv8(i8 %a, i8 %b) {
5; CHECK-LABEL: div8:
6; CHECK: call __udivmodqi4
7; CHECK-NEXT: ret
8
9  %quotient = udiv i8 %a, %b
10  ret i8 %quotient
11}
12
13; Signed 8-bit division
14define i8 @sdiv8(i8 %a, i8 %b) {
15; CHECK-LABEL: sdiv8:
16; CHECK: call __divmodqi4
17; CHECK-NEXT: ret
18
19  %quotient = sdiv i8 %a, %b
20  ret i8 %quotient
21}
22
23; Unsigned 16-bit division
24define i16 @udiv16(i16 %a, i16 %b) {
25; CHECK-LABEL: udiv16:
26; CHECK: call __udivmodhi4
27; CHECK-NEXT: movw r24, r22
28; CHECK-NEXT: ret
29  %quot = udiv i16 %a, %b
30  ret i16 %quot
31}
32
33; Signed 16-bit division
34define i16 @sdiv16(i16 %a, i16 %b) {
35; CHECK-LABEL: sdiv16:
36; CHECK: call __divmodhi4
37; CHECK-NEXT: movw r24, r22
38; CHECK-NEXT: ret
39  %quot = sdiv i16 %a, %b
40  ret i16 %quot
41}
42
43; Unsigned 32-bit division
44define i32 @udiv32(i32 %a, i32 %b) {
45; CHECK-LABEL: udiv32:
46; CHECK: call __udivmodsi4
47; CHECK-NEXT: movw r22, r18
48; CHECK-NEXT: movw r24, r20
49; CHECK-NEXT: ret
50  %quot = udiv i32 %a, %b
51  ret i32 %quot
52}
53
54; Signed 32-bit division
55define i32 @sdiv32(i32 %a, i32 %b) {
56; CHECK-LABEL: sdiv32:
57; CHECK: call __divmodsi4
58; CHECK-NEXT: movw r22, r18
59; CHECK-NEXT: movw r24, r20
60; CHECK-NEXT: ret
61  %quot = sdiv i32 %a, %b
62  ret i32 %quot
63}
64
65; Unsigned 64-bit division
66define i64 @udiv64(i64 %a, i64 %b) {
67; CHECK-LABEL: udiv64:
68; CHECK: call __udivmoddi4
69; CHECK-NEXT: ldd r18, Y+1
70; CHECK-NEXT: ldd r19, Y+2
71; CHECK-NEXT: ldd r20, Y+3
72; CHECK-NEXT: ldd r21, Y+4
73; CHECK-NEXT: ldd r22, Y+5
74; CHECK-NEXT: ldd r23, Y+6
75; CHECK-NEXT: ldd r24, Y+7
76; CHECK-NEXT: ldd r25, Y+8
77; CHECK: ret
78  %quot = udiv i64 %a, %b
79  ret i64 %quot
80}
81
82; Signed 64-bit division
83define i64 @sdiv64(i64 %a, i64 %b) {
84; CHECK-LABEL: sdiv64:
85; CHECK: call __divmoddi4
86; CHECK-NEXT: ldd r18, Y+1
87; CHECK-NEXT: ldd r19, Y+2
88; CHECK-NEXT: ldd r20, Y+3
89; CHECK-NEXT: ldd r21, Y+4
90; CHECK-NEXT: ldd r22, Y+5
91; CHECK-NEXT: ldd r23, Y+6
92; CHECK-NEXT: ldd r24, Y+7
93; CHECK-NEXT: ldd r25, Y+8
94; CHECK: ret
95  %quot = sdiv i64 %a, %b
96  ret i64 %quot
97}
98
99; Unsigned 128-bit division
100define i128 @udiv128(i128 %a, i128 %b) {
101; CHECK-LABEL: udiv128:
102; CHECK: call __udivmodti4
103; CHECK: ret
104  %quot = udiv i128 %a, %b
105  ret i128 %quot
106}
107
108; Signed 128-bit division
109define i128 @sdiv128(i128 %a, i128 %b) {
110; CHECK-LABEL: sdiv128:
111; CHECK: call __divmodti4
112; CHECK: ret
113  %quot = sdiv i128 %a, %b
114  ret i128 %quot
115}
116
117