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1; RUN: opt -irce-print-range-checks -irce-print-changed-loops -verify-loop-info -passes=irce < %s 2>&1 | FileCheck %s2; RUN: opt -irce-print-range-checks -irce-print-changed-loops -verify-loop-info -passes='require<branch-prob>,irce' < %s 2>&1 | FileCheck %s3 4; CHECK: irce: loop has 1 inductive range checks:5; CHECK-NEXT: InductiveRangeCheck:6; CHECK-NEXT: Begin: (-1 + %n) Step: -1 End: 21474836477; CHECK-NEXT: CheckUse: br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1 Operand: 08; CHECK-NEXT: irce: in function only_lower_check: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>9 10define void @only_lower_check(ptr %arr, ptr %a_len_ptr, i32 %n) {11 entry:12 %len = load i32, ptr %a_len_ptr, !range !013 %first.itr.check = icmp sgt i32 %n, 014 %start = sub i32 %n, 115 br i1 %first.itr.check, label %loop, label %exit16 17 loop:18 %idx = phi i32 [ %start, %entry ] , [ %idx.dec, %in.bounds ]19 %idx.dec = sub i32 %idx, 120 %abc = icmp sge i32 %idx, 021 br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !122 23 in.bounds:24 %addr = getelementptr i32, ptr %arr, i32 %idx25 store i32 0, ptr %addr26 %next = icmp sgt i32 %idx.dec, -127 br i1 %next, label %loop, label %exit28 29 out.of.bounds:30 ret void31 32 exit:33 ret void34}35 36!0 = !{i32 0, i32 2147483647}37!1 = !{!"branch_weights", i32 64, i32 4}38