1; RUN: llc < %s -march=avr | FileCheck %s
2
3define i8 @sub8_reg_reg(i8 %a, i8 %b) {
4; CHECK-LABEL: sub8_reg_reg:
5; CHECK: sub r24, r22
6    %result = sub i8 %a, %b
7    ret i8 %result
8}
9
10define i8 @sub8_reg_imm(i8 %a) {
11; CHECK-LABEL: sub8_reg_imm:
12; CHECK: subi r24, 5
13    %result = sub i8 %a, 5
14    ret i8 %result
15}
16
17define i8 @sub8_reg_decrement(i8 %a) {
18; CHECK-LABEL: sub8_reg_decrement:
19; CHECK: dec r24
20    %result = sub i8 %a, 1
21    ret i8 %result
22}
23
24define i16 @sub16_reg_reg(i16 %a, i16 %b) {
25; CHECK-LABEL: sub16_reg_reg:
26; CHECK: sub r24, r22
27; CHECK: sbc r25, r23
28    %result = sub i16 %a, %b
29    ret i16 %result
30}
31
32define i16 @sub16_reg_imm(i16 %a) {
33; CHECK-LABEL: sub16_reg_imm:
34; CHECK: sbiw r24, 63
35    %result = sub i16 %a, 63
36    ret i16 %result
37}
38
39define i16 @sub16_reg_imm_subi(i16 %a) {
40; CHECK-LABEL: sub16_reg_imm_subi:
41; CHECK: subi r24, 210
42; CHECK: sbci r25, 4
43    %result = sub i16 %a, 1234
44    ret i16 %result
45}
46
47define i32 @sub32_reg_reg(i32 %a, i32 %b) {
48; CHECK-LABEL: sub32_reg_reg:
49; CHECK: sub r22, r18
50; CHECK: sbc r23, r19
51; CHECK: sbc r24, r20
52; CHECK: sbc r25, r21
53    %result = sub i32 %a, %b
54    ret i32 %result
55}
56
57define i32 @sub32_reg_imm(i32 %a) {
58; CHECK-LABEL: sub32_reg_imm:
59; CHECK: subi r22, 21
60; CHECK: sbci r23, 205
61; CHECK: sbci r24, 91
62; CHECK: sbci r25, 7
63    %result = sub i32 %a, 123456789
64    ret i32 %result
65}
66
67define i64 @sub64_reg_reg(i64 %a, i64 %b) {
68; CHECK-LABEL: sub64_reg_reg:
69; CHECK: sub r18, r10
70; CHECK: sbc r20, r12
71; CHECK: sbc r21, r13
72; CHECK: sbc r22, r14
73; CHECK: sbc r23, r15
74; CHECK: sbc r24, r16
75; CHECK: sbc r25, r17
76    %result = sub i64 %a, %b
77    ret i64 %result
78}
79
80define i64 @sub64_reg_imm(i64 %a) {
81; CHECK-LABEL: sub64_reg_imm:
82; CHECK: subi r18, 204
83; CHECK: sbci r19, 204
84; CHECK: sbci r20, 104
85; CHECK: sbci r21, 37
86; CHECK: sbci r22, 25
87; CHECK: sbci r23, 22
88; CHECK: sbci r24, 236
89; CHECK: sbci r25, 190
90    %result = sub i64 %a, 13757395258967641292
91    ret i64 %result
92}
93