1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple=arm-eabi < %s | FileCheck %s
3
4; Make sure this doesn't hang, and there are no unnecessary
5; "and" instructions.
6
7define dso_local void @f(i16* %p) {
8; CHECK-LABEL: f:
9; CHECK:       @ %bb.0: @ %entry
10; CHECK-NEXT:  .LBB0_1: @ %bb
11; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
12; CHECK-NEXT:    ldrh r1, [r0]
13; CHECK-NEXT:    and r2, r1, #255
14; CHECK-NEXT:    add r3, r2, r1, lsr #8
15; CHECK-NEXT:    add r2, r3, r2
16; CHECK-NEXT:    add r1, r2, r1, lsr #8
17; CHECK-NEXT:    add r1, r1, #2
18; CHECK-NEXT:    lsr r1, r1, #2
19; CHECK-NEXT:    strh r1, [r0]
20; CHECK-NEXT:    b .LBB0_1
21entry:
22  br label %bb
23
24bb:
25  %_p_scalar_ = load i16, i16* %p, align 2
26  %p_and = and i16 %_p_scalar_, 255
27  %p_ = lshr i16 %_p_scalar_, 8
28  %p_add = add nuw nsw i16 %p_, 2
29  %p_add14 = add nuw nsw i16 %p_add, %p_and
30  %p_add18 = add nuw nsw i16 %p_add14, %p_and
31  %p_add19 = add nuw nsw i16 %p_add18, %p_
32  %p_200 = lshr i16 %p_add19, 2
33  store i16 %p_200, i16* %p, align 2
34  br label %bb
35}
36