xref: /llvm-project/llvm/test/CodeGen/AVR/rot.ll (revision f3837e726ff9c5e91163213d34e4547bc7f72f40)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
2; RUN: llc < %s -mtriple=avr | FileCheck %s
3; RUN: llc < %s -mtriple=avr -mattr=+avrtiny | FileCheck --check-prefix=TINY %s
4
5define i8 @rol8(i8 %val, i8 %amt) {
6; CHECK-LABEL: rol8:
7; CHECK:       ; %bb.0:
8; CHECK-NEXT:    andi r22, 7
9; CHECK-NEXT:    dec r22
10; CHECK-NEXT:    brmi .LBB0_2
11; CHECK-NEXT:  .LBB0_1: ; =>This Inner Loop Header: Depth=1
12; CHECK-NEXT:    lsl r24
13; CHECK-NEXT:    adc r24, r1
14; CHECK-NEXT:    dec r22
15; CHECK-NEXT:    brpl .LBB0_1
16; CHECK-NEXT:  .LBB0_2:
17; CHECK-NEXT:    ret
18;
19; TINY-LABEL: rol8:
20; TINY:       ; %bb.0:
21; TINY-NEXT:    andi r22, 7
22; TINY-NEXT:    dec r22
23; TINY-NEXT:    brmi .LBB0_2
24; TINY-NEXT:  .LBB0_1: ; =>This Inner Loop Header: Depth=1
25; TINY-NEXT:    lsl r24
26; TINY-NEXT:    adc r24, r17
27; TINY-NEXT:    dec r22
28; TINY-NEXT:    brpl .LBB0_1
29; TINY-NEXT:  .LBB0_2:
30; TINY-NEXT:    ret
31  %mod = urem i8 %amt, 8
32  %inv = sub i8 8, %mod
33  %parta = shl i8 %val, %mod
34  %partb = lshr i8 %val, %inv
35  %rotl = or i8 %parta, %partb
36  ret i8 %rotl
37}
38
39
40define i8 @ror8(i8 %val, i8 %amt) {
41; CHECK-LABEL: ror8:
42; CHECK:       ; %bb.0:
43; CHECK-NEXT:    andi r22, 7
44; CHECK-NEXT:    dec r22
45; CHECK-NEXT:    brmi .LBB1_2
46; CHECK-NEXT:  .LBB1_1: ; =>This Inner Loop Header: Depth=1
47; CHECK-NEXT:    bst r24, 0
48; CHECK-NEXT:    ror r24
49; CHECK-NEXT:    bld r24, 7
50; CHECK-NEXT:    dec r22
51; CHECK-NEXT:    brpl .LBB1_1
52; CHECK-NEXT:  .LBB1_2:
53; CHECK-NEXT:    ret
54;
55; TINY-LABEL: ror8:
56; TINY:       ; %bb.0:
57; TINY-NEXT:    andi r22, 7
58; TINY-NEXT:    dec r22
59; TINY-NEXT:    brmi .LBB1_2
60; TINY-NEXT:  .LBB1_1: ; =>This Inner Loop Header: Depth=1
61; TINY-NEXT:    bst r24, 0
62; TINY-NEXT:    ror r24
63; TINY-NEXT:    bld r24, 7
64; TINY-NEXT:    dec r22
65; TINY-NEXT:    brpl .LBB1_1
66; TINY-NEXT:  .LBB1_2:
67; TINY-NEXT:    ret
68  %mod = urem i8 %amt, 8
69  %inv = sub i8 8, %mod
70  %parta = lshr i8 %val, %mod
71  %partb = shl i8 %val, %inv
72  %rotr = or i8 %parta, %partb
73  ret i8 %rotr
74}
75
76