xref: /llvm-project/llvm/test/CodeGen/RISCV/branch.ll (revision 93fde2ea1b2cb07ed5741057571ee38e7e224978)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
3; RUN:   | FileCheck -check-prefix=RV32I %s
4
5define void @foo(i32 %a, ptr %b, i1 %c) nounwind {
6; RV32I-LABEL: foo:
7; RV32I:       # %bb.0:
8; RV32I-NEXT:    lw a3, 0(a1)
9; RV32I-NEXT:    beq a3, a0, .LBB0_14
10; RV32I-NEXT:  # %bb.1: # %test2
11; RV32I-NEXT:    lw a3, 0(a1)
12; RV32I-NEXT:    bne a3, a0, .LBB0_14
13; RV32I-NEXT:  # %bb.2: # %test3
14; RV32I-NEXT:    lw a3, 0(a1)
15; RV32I-NEXT:    blt a3, a0, .LBB0_14
16; RV32I-NEXT:  # %bb.3: # %test4
17; RV32I-NEXT:    lw a3, 0(a1)
18; RV32I-NEXT:    bge a3, a0, .LBB0_14
19; RV32I-NEXT:  # %bb.4: # %test5
20; RV32I-NEXT:    lw a3, 0(a1)
21; RV32I-NEXT:    bltu a3, a0, .LBB0_14
22; RV32I-NEXT:  # %bb.5: # %test6
23; RV32I-NEXT:    lw a3, 0(a1)
24; RV32I-NEXT:    bgeu a3, a0, .LBB0_14
25; RV32I-NEXT:  # %bb.6: # %test7
26; RV32I-NEXT:    lw a3, 0(a1)
27; RV32I-NEXT:    blt a0, a3, .LBB0_14
28; RV32I-NEXT:  # %bb.7: # %test8
29; RV32I-NEXT:    lw a3, 0(a1)
30; RV32I-NEXT:    bge a0, a3, .LBB0_14
31; RV32I-NEXT:  # %bb.8: # %test9
32; RV32I-NEXT:    lw a3, 0(a1)
33; RV32I-NEXT:    bltu a0, a3, .LBB0_14
34; RV32I-NEXT:  # %bb.9: # %test10
35; RV32I-NEXT:    lw a3, 0(a1)
36; RV32I-NEXT:    bgeu a0, a3, .LBB0_14
37; RV32I-NEXT:  # %bb.10: # %test11
38; RV32I-NEXT:    lw zero, 0(a1)
39; RV32I-NEXT:    andi a2, a2, 1
40; RV32I-NEXT:    bnez a2, .LBB0_14
41; RV32I-NEXT:  # %bb.11: # %test12
42; RV32I-NEXT:    lw a0, 0(a1)
43; RV32I-NEXT:    bgez a0, .LBB0_14
44; RV32I-NEXT:  # %bb.12: # %test13
45; RV32I-NEXT:    lw a0, 0(a1)
46; RV32I-NEXT:    blez a0, .LBB0_14
47; RV32I-NEXT:  # %bb.13: # %test14
48; RV32I-NEXT:    lw zero, 0(a1)
49; RV32I-NEXT:  .LBB0_14: # %end
50; RV32I-NEXT:    ret
51  %val1 = load volatile i32, ptr %b
52  %tst1 = icmp eq i32 %val1, %a
53  br i1 %tst1, label %end, label %test2
54
55test2:
56  %val2 = load volatile i32, ptr %b
57  %tst2 = icmp ne i32 %val2, %a
58  br i1 %tst2, label %end, label %test3
59
60test3:
61  %val3 = load volatile i32, ptr %b
62  %tst3 = icmp slt i32 %val3, %a
63  br i1 %tst3, label %end, label %test4
64
65test4:
66  %val4 = load volatile i32, ptr %b
67  %tst4 = icmp sge i32 %val4, %a
68  br i1 %tst4, label %end, label %test5
69
70test5:
71  %val5 = load volatile i32, ptr %b
72  %tst5 = icmp ult i32 %val5, %a
73  br i1 %tst5, label %end, label %test6
74
75test6:
76  %val6 = load volatile i32, ptr %b
77  %tst6 = icmp uge i32 %val6, %a
78  br i1 %tst6, label %end, label %test7
79
80; Check for condition codes that don't have a matching instruction
81
82test7:
83  %val7 = load volatile i32, ptr %b
84  %tst7 = icmp sgt i32 %val7, %a
85  br i1 %tst7, label %end, label %test8
86
87test8:
88  %val8 = load volatile i32, ptr %b
89  %tst8 = icmp sle i32 %val8, %a
90  br i1 %tst8, label %end, label %test9
91
92test9:
93  %val9 = load volatile i32, ptr %b
94  %tst9 = icmp ugt i32 %val9, %a
95  br i1 %tst9, label %end, label %test10
96
97test10:
98  %val10 = load volatile i32, ptr %b
99  %tst10 = icmp ule i32 %val10, %a
100  br i1 %tst10, label %end, label %test11
101
102; Check the case of a branch where the condition was generated in another
103; function
104
105test11:
106  %val11 = load volatile i32, ptr %b
107  br i1 %c, label %end, label %test12
108
109; Check that we use bgez for X > -1 which is the canonical form.
110
111test12:
112  %val12 = load volatile i32, ptr %b
113  %tst12 = icmp sgt i32 %val12, -1
114  br i1 %tst12, label %end, label %test13
115
116; Check that we use blez (X <= 0) for (X < 1)
117
118test13:
119  %val13 = load volatile i32, ptr %b
120  %tst13 = icmp slt i32 %val13, 1
121  br i1 %tst13, label %end, label %test14
122
123test14:
124  %val14 = load volatile i32, ptr %b
125  br label %end
126
127end:
128  ret void
129}
130