1 ; RUN: opt -irce-print-changed-loops -irce -S < %s 2>&1 | FileCheck %s 2 3 ; Demonstrates that we don't currently handle the general expression 4 ; `A * I + B'. 5 6 define void @general_affine_expressions(i32 *%arr, i32 *%a_len_ptr, i32 %n, 7 i32 %scale, i32 %offset) { 8 ; CHECK-NOT: constrained Loop at depth 9 entry: 10 %len = load i32, i32* %a_len_ptr, !range !0 11 %first.itr.check = icmp sgt i32 %n, 0 12 br i1 %first.itr.check, label %loop, label %exit 13 14 loop: 15 %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ] 16 %idx.next = add i32 %idx, 1 17 %idx.mul = mul i32 %idx, %scale 18 %array.idx = add i32 %idx.mul, %offset 19 %abc.high = icmp slt i32 %array.idx, %len 20 %abc.low = icmp sge i32 %array.idx, 0 21 %abc = and i1 %abc.low, %abc.high 22 br i1 %abc, label %in.bounds, label %out.of.bounds 23 24 in.bounds: 25 %addr = getelementptr i32, i32* %arr, i32 %array.idx 26 store i32 0, i32* %addr 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 !0 = !{i32 0, i32 2147483647} 38
