| blob | e8cd1e35936a33f035986e75455b16283e8eca00 |
1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
3 ; RUN: | FileCheck %s -check-prefixes=RV32
4 ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
5 ; RUN: | FileCheck %s -check-prefixes=RV64
7 define i32 @optbranch_32(i32 %Arg) {
8 ; RV32-LABEL: optbranch_32:
9 ; RV32: # %bb.0: # %bb
10 ; RV32-NEXT: addi a0, a0, 1
11 ; RV32-NEXT: bnez a0, .LBB0_2
12 ; RV32-NEXT: # %bb.1: # %bb2
13 ; RV32-NEXT: li a0, -1
14 ; RV32-NEXT: .LBB0_2: # %bb3
15 ; RV32-NEXT: ret
16 ;
17 ; RV64-LABEL: optbranch_32:
18 ; RV64: # %bb.0: # %bb
19 ; RV64-NEXT: addiw a0, a0, 1
20 ; RV64-NEXT: bnez a0, .LBB0_2
21 ; RV64-NEXT: # %bb.1: # %bb2
22 ; RV64-NEXT: li a0, -1
23 ; RV64-NEXT: .LBB0_2: # %bb3
24 ; RV64-NEXT: ret
25 bb:
26 %i1 = icmp eq i32 %Arg, -1
27 br i1 %i1, label %bb2, label %bb3
29 bb2:
30 ret i32 -1
32 bb3:
33 %i4 = add nuw i32 %Arg, 1
34 ret i32 %i4
35 }
37 define i64 @optbranch_64(i64 %Arg) {
38 ; RV32-LABEL: optbranch_64:
39 ; RV32: # %bb.0: # %bb
40 ; RV32-NEXT: addi a0, a0, 1
41 ; RV32-NEXT: seqz a2, a0
42 ; RV32-NEXT: add a1, a1, a2
43 ; RV32-NEXT: or a2, a0, a1
44 ; RV32-NEXT: bnez a2, .LBB1_2
45 ; RV32-NEXT: # %bb.1: # %bb2
46 ; RV32-NEXT: li a0, -1
47 ; RV32-NEXT: li a1, -1
48 ; RV32-NEXT: .LBB1_2: # %bb3
49 ; RV32-NEXT: ret
50 ;
51 ; RV64-LABEL: optbranch_64:
52 ; RV64: # %bb.0: # %bb
53 ; RV64-NEXT: addi a0, a0, 1
54 ; RV64-NEXT: bnez a0, .LBB1_2
55 ; RV64-NEXT: # %bb.1: # %bb2
56 ; RV64-NEXT: li a0, -1
57 ; RV64-NEXT: .LBB1_2: # %bb3
58 ; RV64-NEXT: ret
59 bb:
60 %i1 = icmp eq i64 %Arg, -1
61 br i1 %i1, label %bb2, label %bb3
63 bb2:
64 ret i64 -1
66 bb3:
67 %i4 = add nuw i64 %Arg, 1
68 ret i64 %i4
69 }
71 define i32 @test_lshr(i32 %v) {
72 ; RV32-LABEL: test_lshr:
73 ; RV32: # %bb.0: # %entry
74 ; RV32-NEXT: li a1, 0
75 ; RV32-NEXT: beqz a0, .LBB2_2
76 ; RV32-NEXT: .LBB2_1: # %for.body
77 ; RV32-NEXT: # =>This Inner Loop Header: Depth=1
78 ; RV32-NEXT: andi a2, a0, 1
79 ; RV32-NEXT: srli a0, a0, 1
80 ; RV32-NEXT: add a1, a1, a2
81 ; RV32-NEXT: bnez a0, .LBB2_1
82 ; RV32-NEXT: .LBB2_2: # %for.end
83 ; RV32-NEXT: mv a0, a1
84 ; RV32-NEXT: ret
85 ;
86 ; RV64-LABEL: test_lshr:
87 ; RV64: # %bb.0: # %entry
88 ; RV64-NEXT: sext.w a1, a0
89 ; RV64-NEXT: beqz a1, .LBB2_3
90 ; RV64-NEXT: # %bb.1: # %for.body.preheader
91 ; RV64-NEXT: li a1, 0
92 ; RV64-NEXT: .LBB2_2: # %for.body
93 ; RV64-NEXT: # =>This Inner Loop Header: Depth=1
94 ; RV64-NEXT: andi a2, a0, 1
95 ; RV64-NEXT: srliw a0, a0, 1
96 ; RV64-NEXT: addw a1, a1, a2
97 ; RV64-NEXT: bnez a0, .LBB2_2
98 ; RV64-NEXT: .LBB2_3: # %for.end
99 ; RV64-NEXT: mv a0, a1
100 ; RV64-NEXT: ret
101 entry:
102 %tobool.not4 = icmp eq i32 %v, 0
103 br i1 %tobool.not4, label %for.end, label %for.body
105 for.body: ; preds = %entry, %for.body
106 %c.06 = phi i32 [ %add, %for.body ], [ 0, %entry ]
107 %v.addr.05 = phi i32 [ %shr, %for.body ], [ %v, %entry ]
108 %and = and i32 %v.addr.05, 1
109 %add = add i32 %c.06, %and
110 %shr = lshr i32 %v.addr.05, 1
111 %tobool.not = icmp ult i32 %v.addr.05, 2
112 br i1 %tobool.not, label %for.end, label %for.body
114 for.end: ; preds = %for.body, %entry
115 %c.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
116 ret i32 %c.0.lcssa
117 }
119 define i32 @test_lshr2(ptr nocapture %x, ptr nocapture readonly %y, i32 %n) {
120 ; RV32-LABEL: test_lshr2:
121 ; RV32: # %bb.0: # %entry
122 ; RV32-NEXT: srli a2, a2, 2
123 ; RV32-NEXT: beqz a2, .LBB3_2
124 ; RV32-NEXT: .LBB3_1: # %while.body
125 ; RV32-NEXT: # =>This Inner Loop Header: Depth=1
126 ; RV32-NEXT: lw a3, 0(a1)
127 ; RV32-NEXT: addi a1, a1, 4
128 ; RV32-NEXT: slli a3, a3, 1
129 ; RV32-NEXT: addi a4, a0, 4
130 ; RV32-NEXT: addi a2, a2, -1
131 ; RV32-NEXT: sw a3, 0(a0)
132 ; RV32-NEXT: mv a0, a4
133 ; RV32-NEXT: bnez a2, .LBB3_1
134 ; RV32-NEXT: .LBB3_2: # %while.end
135 ; RV32-NEXT: li a0, 0
136 ; RV32-NEXT: ret
137 ;
138 ; RV64-LABEL: test_lshr2:
139 ; RV64: # %bb.0: # %entry
140 ; RV64-NEXT: srliw a2, a2, 2
141 ; RV64-NEXT: beqz a2, .LBB3_2
142 ; RV64-NEXT: .LBB3_1: # %while.body
143 ; RV64-NEXT: # =>This Inner Loop Header: Depth=1
144 ; RV64-NEXT: lw a3, 0(a1)
145 ; RV64-NEXT: addi a1, a1, 4
146 ; RV64-NEXT: slli a3, a3, 1
147 ; RV64-NEXT: addi a4, a0, 4
148 ; RV64-NEXT: addiw a2, a2, -1
149 ; RV64-NEXT: sw a3, 0(a0)
150 ; RV64-NEXT: mv a0, a4
151 ; RV64-NEXT: bnez a2, .LBB3_1
152 ; RV64-NEXT: .LBB3_2: # %while.end
153 ; RV64-NEXT: li a0, 0
154 ; RV64-NEXT: ret
155 entry:
156 %tobool.not4 = icmp ult i32 %n, 4
157 br i1 %tobool.not4, label %while.end, label %while.body.preheader
159 while.body.preheader: ; preds = %entry
160 %shr = lshr i32 %n, 2
161 br label %while.body
163 while.body: ; preds = %while.body.preheader, %while.body
164 %c.07 = phi i32 [ %dec, %while.body ], [ %shr, %while.body.preheader ]
165 %x.addr.06 = phi ptr [ %incdec.ptr1, %while.body ], [ %x, %while.body.preheader ]
166 %y.addr.05 = phi ptr [ %incdec.ptr, %while.body ], [ %y, %while.body.preheader ]
167 %incdec.ptr = getelementptr inbounds i32, ptr %y.addr.05, i32 1
168 %0 = load i32, ptr %y.addr.05, align 4
169 %mul = shl nsw i32 %0, 1
170 %incdec.ptr1 = getelementptr inbounds i32, ptr %x.addr.06, i32 1
171 store i32 %mul, ptr %x.addr.06, align 4
172 %dec = add nsw i32 %c.07, -1
173 %tobool.not = icmp eq i32 %dec, 0
174 br i1 %tobool.not, label %while.end, label %while.body
176 while.end: ; preds = %while.body, %entry
177 ret i32 0
178 }