1 ; RUN: opt -irce -S < %s | FileCheck %s
3 define void @multiple_access_no_preloop(
4 i32* %arr_a, i32* %a_len_ptr, i32* %arr_b, i32* %b_len_ptr, i32 %n) {
7 %len.a = load i32* %a_len_ptr, !range !0
8 %len.b = load i32* %b_len_ptr, !range !0
9 %first.itr.check = icmp sgt i32 %n, 0
10 br i1 %first.itr.check, label %loop, label %exit
13 %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds.b ]
14 %idx.next = add i32 %idx, 1
15 %abc.a = icmp slt i32 %idx, %len.a
16 br i1 %abc.a, label %in.bounds.a, label %out.of.bounds, !prof !1
19 %addr.a = getelementptr i32* %arr_a, i32 %idx
20 store i32 0, i32* %addr.a
21 %abc.b = icmp slt i32 %idx, %len.b
22 br i1 %abc.b, label %in.bounds.b, label %out.of.bounds, !prof !1
25 %addr.b = getelementptr i32* %arr_b, i32 %idx
26 store i32 -1, i32* %addr.b
27 %next = icmp slt i32 %idx.next, %n
28 br i1 %next, label %loop, label %exit
37 ; CHECK-LABEL: multiple_access_no_preloop
39 ; CHECK-LABEL: loop.preheader:
40 ; CHECK: [[not_len_b:[^ ]+]] = sub i32 -1, %len.b
41 ; CHECK: [[not_len_a:[^ ]+]] = sub i32 -1, %len.a
42 ; CHECK: [[smax_not_len_cond:[^ ]+]] = icmp sgt i32 [[not_len_b]], [[not_len_a]]
43 ; CHECK: [[smax_not_len:[^ ]+]] = select i1 [[smax_not_len_cond]], i32 [[not_len_b]], i32 [[not_len_a]]
44 ; CHECK: [[not_n:[^ ]+]] = sub i32 -1, %n
45 ; CHECK: [[not_upper_limit_cond_loclamp:[^ ]+]] = icmp sgt i32 [[smax_not_len]], [[not_n]]
46 ; CHECK: [[not_upper_limit_loclamp:[^ ]+]] = select i1 [[not_upper_limit_cond_loclamp]], i32 [[smax_not_len]], i32 [[not_n]]
47 ; CHECK: [[upper_limit_loclamp:[^ ]+]] = sub i32 -1, [[not_upper_limit_loclamp]]
48 ; CHECK: [[upper_limit_cmp:[^ ]+]] = icmp sgt i32 [[upper_limit_loclamp]], 0
49 ; CHECK: [[upper_limit:[^ ]+]] = select i1 [[upper_limit_cmp]], i32 [[upper_limit_loclamp]], i32 0
52 ; CHECK: br i1 true, label %in.bounds.a, label %out.of.bounds
54 ; CHECK-LABEL: in.bounds.a:
55 ; CHECK: br i1 true, label %in.bounds.b, label %out.of.bounds
57 ; CHECK-LABEL: in.bounds.b:
58 ; CHECK: [[main_loop_cond:[^ ]+]] = icmp slt i32 %idx.next, [[upper_limit]]
59 ; CHECK: br i1 [[main_loop_cond]], label %loop, label %main.exit.selector
61 ; CHECK-LABEL: in.bounds.b.postloop:
62 ; CHECK: %next.postloop = icmp slt i32 %idx.next.postloop, %n
63 ; CHECK: br i1 %next.postloop, label %loop.postloop, label %exit.loopexit
65 !0 = !{i32 0, i32 2147483647}
66 !1 = !{!"branch_weights", i32 64, i32 4}