1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=arm-eabi < %s | FileCheck %s
4 ; Make sure this doesn't hang, and there are no unnecessary
7 define dso_local void @f(ptr %p) {
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
25 %_p_scalar_ = load i16, ptr %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, ptr %p, align 2