1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=thumbv8.1m.main -mattr=+lob --verify-machineinstrs %s -o - | FileCheck %s 3 4define arm_aapcs_vfpcc void @test(i16* noalias nocapture readonly %off, i16* noalias nocapture %data, i16* noalias nocapture %dst, i32 %n) { 5; CHECK-LABEL: test: 6; CHECK: @ %bb.0: @ %entry 7; CHECK-NEXT: push.w {r4, r5, r6, r7, r8, lr} 8; CHECK-NEXT: cmp r3, #1 9; CHECK-NEXT: blt .LBB0_7 10; CHECK-NEXT: @ %bb.1: @ %for.cond1.preheader.us.preheader 11; CHECK-NEXT: mov r8, r3 12; CHECK-NEXT: lsl.w r12, r3, #1 13; CHECK-NEXT: movs r3, #0 14; CHECK-NEXT: mov r4, r1 15; CHECK-NEXT: .LBB0_2: @ %for.cond1.preheader.us 16; CHECK-NEXT: @ =>This Loop Header: Depth=1 17; CHECK-NEXT: @ Child Loop BB0_3 Depth 2 18; CHECK-NEXT: @ Child Loop BB0_5 Depth 2 19; CHECK-NEXT: dls lr, r8 20; CHECK-NEXT: movs r6, #0 21; CHECK-NEXT: .LBB0_3: @ %for.body4.us 22; CHECK-NEXT: @ Parent Loop BB0_2 Depth=1 23; CHECK-NEXT: @ => This Inner Loop Header: Depth=2 24; CHECK-NEXT: ldrh.w r5, [r0, r6, lsl #1] 25; CHECK-NEXT: ldrh.w r7, [r1, r6, lsl #1] 26; CHECK-NEXT: add r5, r7 27; CHECK-NEXT: strh.w r5, [r4, r6, lsl #1] 28; CHECK-NEXT: adds r6, #1 29; CHECK-NEXT: le lr, .LBB0_3 30; CHECK-NEXT: @ %bb.4: @ %for.body15.us.preheader 31; CHECK-NEXT: @ in Loop: Header=BB0_2 Depth=1 32; CHECK-NEXT: dls lr, r8 33; CHECK-NEXT: movs r6, #0 34; CHECK-NEXT: .LBB0_5: @ %for.body15.us 35; CHECK-NEXT: @ Parent Loop BB0_2 Depth=1 36; CHECK-NEXT: @ => This Inner Loop Header: Depth=2 37; CHECK-NEXT: ldrh.w r7, [r0, r6, lsl #1] 38; CHECK-NEXT: ldrh.w r5, [r1, r6, lsl #1] 39; CHECK-NEXT: add r5, r7 40; CHECK-NEXT: strh.w r5, [r2, r6, lsl #1] 41; CHECK-NEXT: adds r6, #1 42; CHECK-NEXT: le lr, .LBB0_5 43; CHECK-NEXT: @ %bb.6: @ %for.cond.cleanup14.us 44; CHECK-NEXT: @ in Loop: Header=BB0_2 Depth=1 45; CHECK-NEXT: adds r3, #1 46; CHECK-NEXT: add r2, r12 47; CHECK-NEXT: add r4, r12 48; CHECK-NEXT: cmp r3, r8 49; CHECK-NEXT: bne .LBB0_2 50; CHECK-NEXT: .LBB0_7: @ %for.cond.cleanup 51; CHECK-NEXT: pop.w {r4, r5, r6, r7, r8, pc} 52entry: 53 %cmp252 = icmp sgt i32 %n, 0 54 br i1 %cmp252, label %for.cond1.preheader.us, label %for.cond.cleanup 55 56for.cond1.preheader.us: ; preds = %entry, %for.cond.cleanup14.us 57 %i.057.us = phi i32 [ %inc29.us, %for.cond.cleanup14.us ], [ 0, %entry ] 58 %mul.us = mul i32 %i.057.us, %n 59 br label %for.body4.us 60 61for.cond.cleanup14.us: ; preds = %for.body15.us 62 %inc29.us = add nuw i32 %i.057.us, 1 63 %exitcond94 = icmp eq i32 %inc29.us, %n 64 br i1 %exitcond94, label %for.cond.cleanup, label %for.cond1.preheader.us 65 66for.body15.us: ; preds = %for.body4.us, %for.body15.us 67 %j10.055.us = phi i32 [ %inc26.us, %for.body15.us ], [ 0, %for.body4.us ] 68 %arrayidx16.us = getelementptr inbounds i16, i16* %off, i32 %j10.055.us 69 %0 = load i16, i16* %arrayidx16.us, align 2 70 %arrayidx18.us = getelementptr inbounds i16, i16* %data, i32 %j10.055.us 71 %1 = load i16, i16* %arrayidx18.us, align 2 72 %add20.us = add i16 %1, %0 73 %add23.us = add i32 %j10.055.us, %mul.us 74 %arrayidx24.us = getelementptr inbounds i16, i16* %dst, i32 %add23.us 75 store i16 %add20.us, i16* %arrayidx24.us, align 2 76 %inc26.us = add nuw nsw i32 %j10.055.us, 1 77 %exitcond93 = icmp eq i32 %inc26.us, %n 78 br i1 %exitcond93, label %for.cond.cleanup14.us, label %for.body15.us 79 80for.body4.us: ; preds = %for.body4.us, %for.cond1.preheader.us 81 %j.053.us = phi i32 [ 0, %for.cond1.preheader.us ], [ %inc.us, %for.body4.us ] 82 %arrayidx.us = getelementptr inbounds i16, i16* %off, i32 %j.053.us 83 %2 = load i16, i16* %arrayidx.us, align 2 84 %arrayidx5.us = getelementptr inbounds i16, i16* %data, i32 %j.053.us 85 %3 = load i16, i16* %arrayidx5.us, align 2 86 %add.us = add i16 %3, %2 87 %add8.us = add i32 %j.053.us, %mul.us 88 %arrayidx9.us = getelementptr inbounds i16, i16* %data, i32 %add8.us 89 store i16 %add.us, i16* %arrayidx9.us, align 2 90 %inc.us = add nuw nsw i32 %j.053.us, 1 91 %exitcond = icmp eq i32 %inc.us, %n 92 br i1 %exitcond, label %for.body15.us, label %for.body4.us 93 94for.cond.cleanup: ; preds = %for.cond.cleanup14.us, %entry 95 ret void 96} 97