1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=thumbv8.1m.main %s -o - | FileCheck %s
4 define void @cbz_exit(i32* %in, i32* %res) {
5 ; CHECK-LABEL: cbz_exit:
6 ; CHECK: @ %bb.0: @ %entry
7 ; CHECK-NEXT: subs r2, r0, #4
8 ; CHECK-NEXT: mov.w r0, #-1
9 ; CHECK-NEXT: .LBB0_1: @ %loop
10 ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
11 ; CHECK-NEXT: ldr r3, [r2, #4]!
12 ; CHECK-NEXT: adds r0, #1
13 ; CHECK-NEXT: cbz r3, .LBB0_2
14 ; CHECK-NEXT: le .LBB0_1
15 ; CHECK-NEXT: .LBB0_2: @ %exit
16 ; CHECK-NEXT: str r0, [r1]
22 %offset = phi i32 [ 0, %entry ], [ %next, %loop ]
23 %ptr = getelementptr i32, i32* %in, i32 %offset
24 %val = load i32, i32* %ptr
25 %next = add i32 %offset, 1
26 %cmp = icmp eq i32 %val, 0
27 br i1 %cmp, label %exit, label %loop
30 store i32 %offset, i32* %res
34 define void @cbnz_exit(i32* %in, i32* %res) {
35 ; CHECK-LABEL: cbnz_exit:
36 ; CHECK: @ %bb.0: @ %entry
37 ; CHECK-NEXT: subs r2, r0, #4
38 ; CHECK-NEXT: mov.w r0, #-1
39 ; CHECK-NEXT: .LBB1_1: @ %loop
40 ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
41 ; CHECK-NEXT: ldr r3, [r2, #4]!
42 ; CHECK-NEXT: adds r0, #1
43 ; CHECK-NEXT: cbnz r3, .LBB1_2
44 ; CHECK-NEXT: le .LBB1_1
45 ; CHECK-NEXT: .LBB1_2: @ %exit
46 ; CHECK-NEXT: str r0, [r1]
52 %offset = phi i32 [ 0, %entry ], [ %next, %loop ]
53 %ptr = getelementptr i32, i32* %in, i32 %offset
54 %val = load i32, i32* %ptr
55 %next = add i32 %offset, 1
56 %cmp = icmp ne i32 %val, 0
57 br i1 %cmp, label %exit, label %loop
60 store i32 %offset, i32* %res
64 define void @cbnz_exit_too_large(i32* %in, i32* %res) {
65 ; CHECK-LABEL: cbnz_exit_too_large:
66 ; CHECK: @ %bb.0: @ %entry
67 ; CHECK-NEXT: subs r2, r0, #4
68 ; CHECK-NEXT: mov.w r0, #-1
69 ; CHECK-NEXT: .LBB2_1: @ %loop
70 ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
71 ; CHECK-NEXT: ldr r12, [r2, #4]!
72 ; CHECK-NEXT: .zero 4090
73 ; CHECK-NEXT: adds r0, #1
74 ; CHECK-NEXT: cmp.w r12, #0
75 ; CHECK-NEXT: beq.w .LBB2_1
76 ; CHECK-NEXT: @ %bb.2: @ %exit
77 ; CHECK-NEXT: str r0, [r1]
83 %offset = phi i32 [ 0, %entry ], [ %next, %loop ]
84 %ptr = getelementptr i32, i32* %in, i32 %offset
85 %val = load i32, i32* %ptr
86 %next = add i32 %offset, 1
87 %cmp = icmp ne i32 %val, 0
88 %size = call i32 @llvm.arm.space(i32 4090, i32 undef)
89 br i1 %cmp, label %exit, label %loop
92 store i32 %offset, i32* %res
96 define void @cbz_exit_minsize(i32* %in, i32* %res) #0 {
97 ; CHECK-LABEL: cbz_exit_minsize:
98 ; CHECK: @ %bb.0: @ %entry
99 ; CHECK-NEXT: movs r2, #0
100 ; CHECK-NEXT: .LBB3_1: @ %loop
101 ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
102 ; CHECK-NEXT: ldr.w r3, [r0, r2, lsl #2]
103 ; CHECK-NEXT: adds r2, #1
104 ; CHECK-NEXT: cmp r3, #0
105 ; CHECK-NEXT: bne .LBB3_1
106 ; CHECK-NEXT: @ %bb.2: @ %exit
107 ; CHECK-NEXT: subs r0, r2, #1
108 ; CHECK-NEXT: str r0, [r1]
114 %offset = phi i32 [ 0, %entry ], [ %next, %loop ]
115 %ptr = getelementptr i32, i32* %in, i32 %offset
116 %val = load i32, i32* %ptr
117 %next = add i32 %offset, 1
118 %cmp = icmp eq i32 %val, 0
119 br i1 %cmp, label %exit, label %loop
122 store i32 %offset, i32* %res
126 define void @cbnz_exit_minsize(i32* %in, i32* %res) #0 {
127 ; CHECK-LABEL: cbnz_exit_minsize:
128 ; CHECK: @ %bb.0: @ %entry
129 ; CHECK-NEXT: movs r2, #0
130 ; CHECK-NEXT: .LBB4_1: @ %loop
131 ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
132 ; CHECK-NEXT: ldr.w r3, [r0, r2, lsl #2]
133 ; CHECK-NEXT: adds r2, #1
134 ; CHECK-NEXT: cmp r3, #0
135 ; CHECK-NEXT: beq .LBB4_1
136 ; CHECK-NEXT: @ %bb.2: @ %exit
137 ; CHECK-NEXT: subs r0, r2, #1
138 ; CHECK-NEXT: str r0, [r1]
144 %offset = phi i32 [ 0, %entry ], [ %next, %loop ]
145 %ptr = getelementptr i32, i32* %in, i32 %offset
146 %val = load i32, i32* %ptr
147 %next = add i32 %offset, 1
148 %cmp = icmp ne i32 %val, 0
149 br i1 %cmp, label %exit, label %loop
152 store i32 %offset, i32* %res
156 attributes #0 = { minsize optsize }
158 declare i32 @llvm.arm.space(i32 immarg, i32);