1 ; RUN: opt -irce -S < %s | FileCheck %s
3 define void @single_access_no_preloop_no_offset(i32 *%arr, i32 *%a_len_ptr, i32 %n) {
5 %len = load i32, i32* %a_len_ptr, !range !0
6 %first.itr.check = icmp sgt i32 %n, 0
7 br i1 %first.itr.check, label %loop, label %exit
10 %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
11 %idx.next = add i32 %idx, 1
12 %abc = icmp slt i32 %idx, %len
13 br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
16 %addr = getelementptr i32, i32* %arr, i32 %idx
17 store i32 0, i32* %addr
18 %next = icmp slt i32 %idx.next, %n
19 br i1 %next, label %loop, label %exit
28 ; CHECK-LABEL: single_access_no_preloop
31 ; CHECK: br i1 true, label %in.bounds, label %out.of.bounds
33 ; CHECK-LABEL: main.exit.selector:
34 ; CHECK-NEXT: [[continue:%[^ ]+]] = icmp slt i32 %idx.next, %n
35 ; CHECK-NEXT: br i1 [[continue]], label %main.pseudo.exit, label %exit.loopexit
37 ; CHECK-LABEL: main.pseudo.exit:
38 ; CHECK-NEXT: %idx.copy = phi i32 [ 0, %loop.preheader ], [ %idx.next, %main.exit.selector ]
39 ; CHECK-NEXT: %indvar.end = phi i32 [ 0, %loop.preheader ], [ %idx.next, %main.exit.selector ]
40 ; CHECK-NEXT: br label %postloop
42 ; CHECK-LABEL: postloop:
43 ; CHECK-NEXT: br label %loop.postloop
45 ; CHECK-LABEL: loop.postloop:
46 ; CHECK-NEXT: %idx.postloop = phi i32 [ %idx.next.postloop, %in.bounds.postloop ], [ %idx.copy, %postloop ]
47 ; CHECK-NEXT: %idx.next.postloop = add i32 %idx.postloop, 1
48 ; CHECK-NEXT: %abc.postloop = icmp slt i32 %idx.postloop, %len
49 ; CHECK-NEXT: br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds
51 ; CHECK-LABEL: in.bounds.postloop:
52 ; CHECK-NEXT: %addr.postloop = getelementptr i32, i32* %arr, i32 %idx.postloop
53 ; CHECK-NEXT: store i32 0, i32* %addr.postloop
54 ; CHECK-NEXT: %next.postloop = icmp slt i32 %idx.next.postloop, %n
55 ; CHECK-NEXT: br i1 %next.postloop, label %loop.postloop, label %exit.loopexit
58 define void @single_access_no_preloop_with_offset(i32 *%arr, i32 *%a_len_ptr, i32 %n) {
60 %len = load i32, i32* %a_len_ptr, !range !0
61 %first.itr.check = icmp sgt i32 %n, 0
62 br i1 %first.itr.check, label %loop, label %exit
65 %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
66 %idx.next = add i32 %idx, 1
67 %idx.for.abc = add i32 %idx, 4
68 %abc = icmp slt i32 %idx.for.abc, %len
69 br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
72 %addr = getelementptr i32, i32* %arr, i32 %idx.for.abc
73 store i32 0, i32* %addr
74 %next = icmp slt i32 %idx.next, %n
75 br i1 %next, label %loop, label %exit
84 ; CHECK-LABEL: single_access_no_preloop_with_offset
86 ; CHECK-LABEL: loop.preheader:
87 ; CHECK: [[not_n:[^ ]+]] = sub i32 -1, %n
88 ; CHECK: [[not_safe_range_end:[^ ]+]] = sub i32 3, %len
89 ; CHECK: [[not_exit_main_loop_at_hiclamp_cmp:[^ ]+]] = icmp sgt i32 [[not_n]], [[not_safe_range_end]]
90 ; CHECK: [[not_exit_main_loop_at_hiclamp:[^ ]+]] = select i1 [[not_exit_main_loop_at_hiclamp_cmp]], i32 [[not_n]], i32 [[not_safe_range_end]]
91 ; CHECK: [[exit_main_loop_at_hiclamp:[^ ]+]] = sub i32 -1, [[not_exit_main_loop_at_hiclamp]]
92 ; CHECK: [[exit_main_loop_at_loclamp_cmp:[^ ]+]] = icmp sgt i32 [[exit_main_loop_at_hiclamp]], 0
93 ; CHECK: [[exit_main_loop_at_loclamp:[^ ]+]] = select i1 [[exit_main_loop_at_loclamp_cmp]], i32 [[exit_main_loop_at_hiclamp]], i32 0
94 ; CHECK: [[enter_main_loop:[^ ]+]] = icmp slt i32 0, [[exit_main_loop_at_loclamp]]
95 ; CHECK: br i1 [[enter_main_loop]], label %loop, label %main.pseudo.exit
98 ; CHECK: br i1 true, label %in.bounds, label %out.of.bounds
100 ; CHECK-LABEL: in.bounds:
101 ; CHECK: [[continue_main_loop:[^ ]+]] = icmp slt i32 %idx.next, [[exit_main_loop_at_loclamp]]
102 ; CHECK: br i1 [[continue_main_loop]], label %loop, label %main.exit.selector
104 ; CHECK-LABEL: main.pseudo.exit:
105 ; CHECK: %idx.copy = phi i32 [ 0, %loop.preheader ], [ %idx.next, %main.exit.selector ]
106 ; CHECK: br label %postloop
108 ; CHECK-LABEL: loop.postloop:
109 ; CHECK: %idx.postloop = phi i32 [ %idx.next.postloop, %in.bounds.postloop ], [ %idx.copy, %postloop ]
111 ; CHECK-LABEL: in.bounds.postloop:
112 ; CHECK: %next.postloop = icmp slt i32 %idx.next.postloop, %n
113 ; CHECK: br i1 %next.postloop, label %loop.postloop, label %exit.loopexit
115 !0 = !{i32 0, i32 2147483647}
116 !1 = !{!"branch_weights", i32 64, i32 4}