1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -verify-machineinstrs -mtriple=powerpc-unknown-linux-gnu -mcpu=ppc64 < %s | FileCheck --check-prefix=CHECK %s
3; RUN: llc -verify-machineinstrs -mtriple=powerpc-unknown-linux-gnu -mcpu=ppc < %s | FileCheck --check-prefix=CHECK %s
4
5define i32 @fold_urem_positive_odd(i32 %x) {
6; CHECK-LABEL: fold_urem_positive_odd:
7; CHECK:       # %bb.0:
8; CHECK-NEXT:    lis 4, 22765
9; CHECK-NEXT:    ori 4, 4, 8969
10; CHECK-NEXT:    mulhwu 4, 3, 4
11; CHECK-NEXT:    sub 5, 3, 4
12; CHECK-NEXT:    srwi 5, 5, 1
13; CHECK-NEXT:    add 4, 5, 4
14; CHECK-NEXT:    srwi 4, 4, 6
15; CHECK-NEXT:    mulli 4, 4, 95
16; CHECK-NEXT:    sub 3, 3, 4
17; CHECK-NEXT:    blr
18  %1 = urem i32 %x, 95
19  ret i32 %1
20}
21
22
23define i32 @fold_urem_positive_even(i32 %x) {
24; CHECK-LABEL: fold_urem_positive_even:
25; CHECK:       # %bb.0:
26; CHECK-NEXT:    lis 4, -2226
27; CHECK-NEXT:    ori 4, 4, 16323
28; CHECK-NEXT:    mulhwu 4, 3, 4
29; CHECK-NEXT:    srwi 4, 4, 10
30; CHECK-NEXT:    mulli 4, 4, 1060
31; CHECK-NEXT:    sub 3, 3, 4
32; CHECK-NEXT:    blr
33  %1 = urem i32 %x, 1060
34  ret i32 %1
35}
36
37
38; Don't fold if we can combine urem with udiv.
39define i32 @combine_urem_udiv(i32 %x) {
40; CHECK-LABEL: combine_urem_udiv:
41; CHECK:       # %bb.0:
42; CHECK-NEXT:    lis 4, 22765
43; CHECK-NEXT:    ori 4, 4, 8969
44; CHECK-NEXT:    mulhwu 4, 3, 4
45; CHECK-NEXT:    sub 5, 3, 4
46; CHECK-NEXT:    srwi 5, 5, 1
47; CHECK-NEXT:    add 4, 5, 4
48; CHECK-NEXT:    srwi 4, 4, 6
49; CHECK-NEXT:    mulli 5, 4, 95
50; CHECK-NEXT:    sub 3, 3, 5
51; CHECK-NEXT:    add 3, 3, 4
52; CHECK-NEXT:    blr
53  %1 = urem i32 %x, 95
54  %2 = udiv i32 %x, 95
55  %3 = add i32 %1, %2
56  ret i32 %3
57}
58
59; Don't fold for divisors that are a power of two.
60define i32 @dont_fold_urem_power_of_two(i32 %x) {
61; CHECK-LABEL: dont_fold_urem_power_of_two:
62; CHECK:       # %bb.0:
63; CHECK-NEXT:    clrlwi 3, 3, 26
64; CHECK-NEXT:    blr
65  %1 = urem i32 %x, 64
66  ret i32 %1
67}
68
69; Don't fold if the divisor is one.
70define i32 @dont_fold_urem_one(i32 %x) {
71; CHECK-LABEL: dont_fold_urem_one:
72; CHECK:       # %bb.0:
73; CHECK-NEXT:    li 3, 0
74; CHECK-NEXT:    blr
75  %1 = urem i32 %x, 1
76  ret i32 %1
77}
78
79; Don't fold if the divisor is 2^32.
80define i32 @dont_fold_urem_i32_umax(i32 %x) {
81; CHECK-LABEL: dont_fold_urem_i32_umax:
82; CHECK:       # %bb.0:
83; CHECK-NEXT:    blr
84  %1 = urem i32 %x, 4294967296
85  ret i32 %1
86}
87
88; Don't fold i64 urem
89define i64 @dont_fold_urem_i64(i64 %x) {
90; CHECK-LABEL: dont_fold_urem_i64:
91; CHECK:       # %bb.0:
92; CHECK-NEXT:    mflr 0
93; CHECK-NEXT:    stw 0, 4(1)
94; CHECK-NEXT:    stwu 1, -16(1)
95; CHECK-NEXT:    .cfi_def_cfa_offset 16
96; CHECK-NEXT:    .cfi_offset lr, 4
97; CHECK-NEXT:    li 5, 0
98; CHECK-NEXT:    li 6, 98
99; CHECK-NEXT:    bl __umoddi3
100; CHECK-NEXT:    lwz 0, 20(1)
101; CHECK-NEXT:    addi 1, 1, 16
102; CHECK-NEXT:    mtlr 0
103; CHECK-NEXT:    blr
104  %1 = urem i64 %x, 98
105  ret i64 %1
106}
107