1 ; RUN: opt -verify-loop-info -irce -irce-print-range-checks -irce-print-changed-loops %s -S 2>&1 | FileCheck %s
2 ; RUN: opt -verify-loop-info -passes='require<branch-prob>,irce' -irce-print-range-checks -irce-print-changed-loops %s -S 2>&1 | FileCheck %s
4 ; CHECK: irce: loop has 1 inductive range checks:
5 ; CHECK-NEXT:InductiveRangeCheck:
6 ; CHECK-NEXT: Begin: %offset Step: 1 End: %len
7 ; CHECK-NEXT: CheckUse: br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1 Operand: 0
8 ; CHECK-NEXT: irce: in function incrementing: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
10 define void @incrementing(i32 *%arr, i32 *%a_len_ptr, i32 %n, i32 %offset) {
12 %len = load i32, i32* %a_len_ptr, !range !0
13 %first.itr.check = icmp sgt i32 %n, 0
14 br i1 %first.itr.check, label %loop, label %exit
17 %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
18 %idx.next = add i32 %idx, 1
19 %array.idx = add i32 %idx, %offset
20 %abc = icmp slt i32 %array.idx, %len
21 br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
24 %addr = getelementptr i32, i32* %arr, i32 %array.idx
25 store i32 0, i32* %addr
26 %next = icmp slt i32 %idx.next, %n
27 br i1 %next, label %loop, label %exit
36 !0 = !{i32 0, i32 2147483647}
37 !1 = !{!"branch_weights", i32 64, i32 4}