1; RUN: opt -mtriple=thumbv7-unknown-linux-android -arm-parallel-dsp -S %s -o - | FileCheck %s 2 3; CHECK-LABEL: undef_no_return 4; CHECK: [[CAST_A:%[^ ]+]] = bitcast i16* %incdec.ptr21 to i32* 5; CHECK: [[LOAD_A:%[^ ]+]] = load i32, i32* [[CAST_A]], align 2 6; CHECK: %uglygep15 = getelementptr i8, i8* undef, i32 undef 7; CHECK: [[GEP8:%[^ ]+]] = getelementptr i8, i8* undef, i32 undef 8; CHECK: [[CAST_GEP8:%[^ ]+]] = bitcast i8* [[GEP8]] to i16* 9; CHECK: [[GEP16:%[^ ]+]] = getelementptr i16, i16* [[CAST_GEP8]], i32 6 10; CHECK: [[CAST_GEP16:%[^ ]+]] = bitcast i16* [[GEP16]] to i32* 11; CHECK: [[LOAD_UNDEF:%[^ ]+]] = load i32, i32* [[CAST_GEP16]], align 2 12; CHECK: call i32 @llvm.arm.smladx(i32 [[LOAD_UNDEF]], i32 [[LOAD_A]], i32 undef) 13define void @undef_no_return(i16* %a) { 14entry: 15 %incdec.ptr21 = getelementptr inbounds i16, i16* %a, i32 3 16 %incdec.ptr29 = getelementptr inbounds i16, i16* %a, i32 4 17 br label %for.body 18 19for.body: 20 %0 = load i16, i16* %incdec.ptr21, align 2 21 %conv25 = sext i16 %0 to i32 22 %uglygep15 = getelementptr i8, i8* undef, i32 undef 23 %uglygep1516 = bitcast i8* %uglygep15 to i16* 24 %scevgep17 = getelementptr i16, i16* %uglygep1516, i32 7 25 %1 = load i16, i16* %scevgep17, align 2 26 %conv31 = sext i16 %1 to i32 27 %2 = load i16, i16* %incdec.ptr29, align 2 28 %conv33 = sext i16 %2 to i32 29 %uglygep12 = getelementptr i8, i8* undef, i32 undef 30 %uglygep1213 = bitcast i8* %uglygep12 to i16* 31 %scevgep14 = getelementptr i16, i16* %uglygep1213, i32 6 32 %3 = load i16, i16* %scevgep14, align 2 33 %conv39 = sext i16 %3 to i32 34 %mul.i287.neg.neg = mul nsw i32 %conv31, %conv25 35 %mul.i283.neg.neg = mul nsw i32 %conv39, %conv33 36 %reass.add408 = add i32 undef, %mul.i287.neg.neg 37 %reass.add409 = add i32 %reass.add408, %mul.i283.neg.neg 38 br label %for.body 39} 40 41; CHECK-LABEL: return 42; CHECK: phi i32 [ %N, %entry ] 43; CHECK: [[ACC:%[^ ]+]] = phi i32 [ 0, %entry ], [ [[ACC_NEXT:%[^ ]+]], %for.body ] 44; CHECK: [[CAST_A:%[^ ]+]] = bitcast i16* %incdec.ptr21 to i32* 45; CHECK: [[LOAD_A:%[^ ]+]] = load i32, i32* [[CAST_A]], align 2 46; CHECK: [[GEP8:%[^ ]+]] = getelementptr i8, i8* %b, i32 0 47; CHECK: [[CAST_GEP8:%[^ ]+]] = bitcast i8* [[GEP8]] to i16* 48; CHECK: [[GEP16:%[^ ]+]] = getelementptr i16, i16* [[CAST_GEP8]], i32 %iv 49; CHECK: [[CAST_GEP16:%[^ ]+]] = bitcast i16* [[GEP16]] to i32* 50; CHECK: [[LOAD_B:%[^ ]+]] = load i32, i32* [[CAST_GEP16]], align 2 51; CHECK: [[ACC_NEXT]] = call i32 @llvm.arm.smladx(i32 [[LOAD_B]], i32 [[LOAD_A]], i32 [[ACC]]) 52define i32 @return(i16* %a, i8* %b, i32 %N) { 53entry: 54 %incdec.ptr21 = getelementptr inbounds i16, i16* %a, i32 3 55 %incdec.ptr29 = getelementptr inbounds i16, i16* %a, i32 4 56 br label %for.body 57 58for.body: 59 %iv = phi i32 [ %N, %entry ], [ %iv.next, %for.body ] 60 %acc = phi i32 [ 0, %entry ], [ %reass.add409, %for.body ] 61 %0 = load i16, i16* %incdec.ptr21, align 2 62 %conv25 = sext i16 %0 to i32 63 %uglygep15 = getelementptr i8, i8* %b, i32 0 64 %uglygep1516 = bitcast i8* %uglygep15 to i16* 65 %b.idx = add nuw nsw i32 %iv, 1 66 %scevgep17 = getelementptr i16, i16* %uglygep1516, i32 %b.idx 67 %scevgep14 = getelementptr i16, i16* %uglygep1516, i32 %iv 68 %1 = load i16, i16* %scevgep17, align 2 69 %conv31 = sext i16 %1 to i32 70 %2 = load i16, i16* %incdec.ptr29, align 2 71 %conv33 = sext i16 %2 to i32 72 %3 = load i16, i16* %scevgep14, align 2 73 %conv39 = sext i16 %3 to i32 74 %mul.i287.neg.neg = mul nsw i32 %conv31, %conv25 75 %mul.i283.neg.neg = mul nsw i32 %conv39, %conv33 76 %reass.add408 = add i32 %acc, %mul.i287.neg.neg 77 %reass.add409 = add i32 %reass.add408, %mul.i283.neg.neg 78 %iv.next = add nuw nsw i32 %iv, -1 79 %cmp = icmp ne i32 %iv.next, 0 80 br i1 %cmp, label %for.body, label %exit 81 82exit: 83 ret i32 %reass.add409 84} 85