1 ; RUN: opt -irce -S < %s | FileCheck %s 2 3 define void @multiple_access_no_preloop( 4 i32* %arr_a, i32* %a_len_ptr, i32* %arr_b, i32* %b_len_ptr, i32 %n) { 5 6 entry: 7 %len.a = load i32, i32* %a_len_ptr, !range !0 8 %len.b = load i32, 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 11 12 loop: 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 17 18 in.bounds.a: 19 %addr.a = getelementptr i32, 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 23 24 in.bounds.b: 25 %addr.b = getelementptr i32, 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 29 30 out.of.bounds: 31 ret void 32 33 exit: 34 ret void 35 } 36 37 ; CHECK-LABEL: multiple_access_no_preloop 38 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 50 51 ; CHECK-LABEL: loop: 52 ; CHECK: br i1 true, label %in.bounds.a, label %out.of.bounds 53 54 ; CHECK-LABEL: in.bounds.a: 55 ; CHECK: br i1 true, label %in.bounds.b, label %out.of.bounds 56 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 60 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 64 65 !0 = !{i32 0, i32 2147483647} 66 !1 = !{!"branch_weights", i32 64, i32 4} 67
