| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=arm-eabi < %s | FileCheck %s |
| |
| ; Make sure this doesn't hang, and there are no unnecessary |
| ; "and" instructions. |
| |
| define dso_local void @f(i16* %p) { |
| ; CHECK-LABEL: f: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: .LBB0_1: @ %bb |
| ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldrh r1, [r0] |
| ; CHECK-NEXT: and r2, r1, #255 |
| ; CHECK-NEXT: add r3, r2, r1, lsr #8 |
| ; CHECK-NEXT: add r2, r3, r2 |
| ; CHECK-NEXT: add r1, r2, r1, lsr #8 |
| ; CHECK-NEXT: add r1, r1, #2 |
| ; CHECK-NEXT: lsr r1, r1, #2 |
| ; CHECK-NEXT: strh r1, [r0] |
| ; CHECK-NEXT: b .LBB0_1 |
| entry: |
| br label %bb |
| |
| bb: |
| %_p_scalar_ = load i16, i16* %p, align 2 |
| %p_and = and i16 %_p_scalar_, 255 |
| %p_ = lshr i16 %_p_scalar_, 8 |
| %p_add = add nuw nsw i16 %p_, 2 |
| %p_add14 = add nuw nsw i16 %p_add, %p_and |
| %p_add18 = add nuw nsw i16 %p_add14, %p_and |
| %p_add19 = add nuw nsw i16 %p_add18, %p_ |
| %p_200 = lshr i16 %p_add19, 2 |
| store i16 %p_200, i16* %p, align 2 |
| br label %bb |
| } |