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120
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1 ; RUN: llc < %s -march=avr | FileCheck %s
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2
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3 define i8 @sub8_reg_reg(i8 %a, i8 %b) {
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4 ; CHECK-LABEL: sub8_reg_reg:
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5 ; CHECK: sub r24, r22
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6 %result = sub i8 %a, %b
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7 ret i8 %result
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8 }
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9
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10 define i8 @sub8_reg_imm(i8 %a) {
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11 ; CHECK-LABEL: sub8_reg_imm:
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12 ; CHECK: subi r24, 5
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13 %result = sub i8 %a, 5
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14 ret i8 %result
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15 }
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16
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17 define i8 @sub8_reg_decrement(i8 %a) {
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18 ; CHECK-LABEL: sub8_reg_decrement:
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19 ; CHECK: dec r24
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20 %result = sub i8 %a, 1
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21 ret i8 %result
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22 }
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23
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24 define i16 @sub16_reg_reg(i16 %a, i16 %b) {
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25 ; CHECK-LABEL: sub16_reg_reg:
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26 ; CHECK: sub r24, r22
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27 ; CHECK: sbc r25, r23
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28 %result = sub i16 %a, %b
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29 ret i16 %result
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30 }
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31
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32 define i16 @sub16_reg_imm(i16 %a) {
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33 ; CHECK-LABEL: sub16_reg_imm:
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34 ; CHECK: sbiw r24, 63
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35 %result = sub i16 %a, 63
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36 ret i16 %result
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37 }
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38
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39 define i16 @sub16_reg_imm_subi(i16 %a) {
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40 ; CHECK-LABEL: sub16_reg_imm_subi:
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41 ; CHECK: subi r24, 210
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42 ; CHECK: sbci r25, 4
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43 %result = sub i16 %a, 1234
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44 ret i16 %result
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45 }
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46
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47 define i32 @sub32_reg_reg(i32 %a, i32 %b) {
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48 ; CHECK-LABEL: sub32_reg_reg:
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49 ; CHECK: sub r22, r18
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50 ; CHECK: sbc r23, r19
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51 ; CHECK: sbc r24, r20
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52 ; CHECK: sbc r25, r21
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53 %result = sub i32 %a, %b
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54 ret i32 %result
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55 }
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56
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57 define i32 @sub32_reg_imm(i32 %a) {
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58 ; CHECK-LABEL: sub32_reg_imm:
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59 ; CHECK: subi r22, 21
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60 ; CHECK: sbci r23, 205
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61 ; CHECK: sbci r24, 91
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62 ; CHECK: sbci r25, 7
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63 %result = sub i32 %a, 123456789
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64 ret i32 %result
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65 }
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66
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67 define i64 @sub64_reg_reg(i64 %a, i64 %b) {
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68 ; CHECK-LABEL: sub64_reg_reg:
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69 ; CHECK: sub r18, r10
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70 ; CHECK: sbc r20, r12
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71 ; CHECK: sbc r21, r13
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72 ; CHECK: sbc r22, r14
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73 ; CHECK: sbc r23, r15
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74 ; CHECK: sbc r24, r16
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75 ; CHECK: sbc r25, r17
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76 %result = sub i64 %a, %b
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77 ret i64 %result
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78 }
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79
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80 define i64 @sub64_reg_imm(i64 %a) {
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81 ; CHECK-LABEL: sub64_reg_imm:
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82 ; CHECK: subi r18, 204
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83 ; CHECK: sbci r19, 204
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84 ; CHECK: sbci r20, 104
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85 ; CHECK: sbci r21, 37
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86 ; CHECK: sbci r22, 25
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87 ; CHECK: sbci r23, 22
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88 ; CHECK: sbci r24, 236
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89 ; CHECK: sbci r25, 190
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90 %result = sub i64 %a, 13757395258967641292
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91 ret i64 %result
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92 }
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