2 ; RUN: opt -mtriple=arm-arm-eabi -mcpu=cortex-m33 < %s -arm-parallel-dsp -S -stats 2>&1 | FileCheck %s
4 ; A more complicated chain: 4 mul operations, so we expect 2 smlad calls.
6 ; CHECK: %mac1{{\.}}054 = phi i32 [ [[V17:%[0-9]+]], %for.body ], [ 0, %for.body.preheader ]
7 ; CHECK: [[V10:%[0-9]+]] = bitcast i16* %arrayidx to i32*
8 ; CHECK: [[V11:%[0-9]+]] = load i32, i32* [[V10]], align 2
9 ; CHECK: [[V15:%[0-9]+]] = bitcast i16* %arrayidx4 to i32*
10 ; CHECK: [[V16:%[0-9]+]] = load i32, i32* [[V15]], align 2
11 ; CHECK: [[V8:%[0-9]+]] = bitcast i16* %arrayidx8 to i32*
12 ; CHECK: [[V9:%[0-9]+]] = load i32, i32* [[V8]], align 2
13 ; CHECK: [[ACC:%[0-9]+]] = call i32 @llvm.arm.smlad(i32 [[V9]], i32 [[V11]], i32 %mac1{{\.}}054)
14 ; CHECK: [[V13:%[0-9]+]] = bitcast i16* %arrayidx17 to i32*
15 ; CHECK: [[V14:%[0-9]+]] = load i32, i32* [[V13]], align 2
16 ; CHECK: [[V12:%[0-9]+]] = call i32 @llvm.arm.smlad(i32 [[V14]], i32 [[V16]], i32 [[ACC]])
18 ; And we don't want to see a 3rd smlad:
19 ; CHECK-NOT: call i32 @llvm.arm.smlad
21 ; CHECK: 2 arm-parallel-dsp - Number of smlad instructions generated
23 define dso_local i32 @test(i32 %arg, i32* nocapture readnone %arg1, i16* nocapture readonly %arg2, i16* nocapture readonly %arg3) {
25 %cmp52 = icmp sgt i32 %arg, 0
26 br i1 %cmp52, label %for.body.preheader, label %for.cond.cleanup
29 %mac1.0.lcssa = phi i32 [ 0, %entry ], [ %add28, %for.body ]
36 %mac1.054 = phi i32 [ %add28, %for.body ], [ 0, %for.body.preheader ]
37 %i.053 = phi i32 [ %add29, %for.body ], [ 0, %for.body.preheader ]
38 %arrayidx = getelementptr inbounds i16, i16* %arg3, i32 %i.053
39 %0 = load i16, i16* %arrayidx, align 2
40 %add1 = or i32 %i.053, 1
41 %arrayidx2 = getelementptr inbounds i16, i16* %arg3, i32 %add1
42 %1 = load i16, i16* %arrayidx2, align 2
43 %add3 = or i32 %i.053, 2
44 %arrayidx4 = getelementptr inbounds i16, i16* %arg3, i32 %add3
45 %2 = load i16, i16* %arrayidx4, align 2
46 %add5 = or i32 %i.053, 3
47 %arrayidx6 = getelementptr inbounds i16, i16* %arg3, i32 %add5
48 %3 = load i16, i16* %arrayidx6, align 2
49 %arrayidx8 = getelementptr inbounds i16, i16* %arg2, i32 %i.053
50 %4 = load i16, i16* %arrayidx8, align 2
51 %conv = sext i16 %4 to i32
52 %conv9 = sext i16 %0 to i32
53 %mul = mul nsw i32 %conv, %conv9
54 %arrayidx11 = getelementptr inbounds i16, i16* %arg2, i32 %add1
55 %5 = load i16, i16* %arrayidx11, align 2
56 %conv12 = sext i16 %5 to i32
57 %conv13 = sext i16 %1 to i32
58 %mul14 = mul nsw i32 %conv12, %conv13
59 %arrayidx17 = getelementptr inbounds i16, i16* %arg2, i32 %add3
60 %6 = load i16, i16* %arrayidx17, align 2
61 %conv18 = sext i16 %6 to i32
62 %conv19 = sext i16 %2 to i32
63 %mul20 = mul nsw i32 %conv18, %conv19
64 %arrayidx23 = getelementptr inbounds i16, i16* %arg2, i32 %add5
65 %7 = load i16, i16* %arrayidx23, align 2
66 %conv24 = sext i16 %7 to i32
67 %conv25 = sext i16 %3 to i32
68 %mul26 = mul nsw i32 %conv24, %conv25
69 %add15 = add i32 %mul, %mac1.054
70 %add21 = add i32 %add15, %mul14
71 %add27 = add i32 %add21, %mul20
72 %add28 = add i32 %add27, %mul26
73 %add29 = add nuw nsw i32 %i.053, 4
74 %cmp = icmp slt i32 %add29, %arg
75 br i1 %cmp, label %for.body, label %for.cond.cleanup