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; RUN: opt -irce-print-changed-loops -irce -S < %s 2>&1 | FileCheck %s
; Demonstrates that we don't currently handle the general expression
; `A * I + B'.
define void @general_affine_expressions(i32 *%arr, i32 *%a_len_ptr, i32 %n,
i32 %scale, i32 %offset) {
; CHECK-NOT: constrained Loop at depth
entry:
%len = load i32, i32* %a_len_ptr, !range !0
%first.itr.check = icmp sgt i32 %n, 0
br i1 %first.itr.check, label %loop, label %exit
loop:
%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
%idx.next = add i32 %idx, 1
%idx.mul = mul i32 %idx, %scale
%array.idx = add i32 %idx.mul, %offset
%abc.high = icmp slt i32 %array.idx, %len
%abc.low = icmp sge i32 %array.idx, 0
%abc = and i1 %abc.low, %abc.high
br i1 %abc, label %in.bounds, label %out.of.bounds
in.bounds:
%addr = getelementptr i32, i32* %arr, i32 %array.idx
store i32 0, i32* %addr
%next = icmp slt i32 %idx.next, %n
br i1 %next, label %loop, label %exit
out.of.bounds:
ret void
exit:
ret void
}
!0 = !{i32 0, i32 2147483647}
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