1 ; RUN: opt -mtriple=arm-arm-eabi -mcpu=cortex-m33 < %s -arm-parallel-dsp -S | FileCheck %s
3 ; Operands of both muls are not symmetrical (see also comments inlined below), check
4 ; that the rewrite isn't triggered.
6 ; CHECK-NOT: call i32 @llvm.arm.smlad
8 define dso_local i32 @test(i32 %arg, i32* nocapture readnone %arg1, i16* nocapture readonly %arg2, i16* nocapture readonly %arg3) {
10 %cmp24 = icmp sgt i32 %arg, 0
11 br i1 %cmp24, label %for.body.preheader, label %for.cond.cleanup
14 %.pre = load i16, i16* %arg3, align 2
15 %.pre27 = load i16, i16* %arg2, align 2
19 %mac1.0.lcssa = phi i32 [ 0, %entry ], [ %add11, %for.body ]
23 %mac1.026 = phi i32 [ %add11, %for.body ], [ 0, %for.body.preheader ]
24 %i.025 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
25 %arrayidx = getelementptr inbounds i16, i16* %arg3, i32 %i.025
26 %0 = load i16, i16* %arrayidx, align 2
27 %add = add nuw nsw i32 %i.025, 1
28 %arrayidx1 = getelementptr inbounds i16, i16* %arg3, i32 %add
29 %1 = load i16, i16* %arrayidx1, align 2
30 %arrayidx3 = getelementptr inbounds i16, i16* %arg2, i32 %i.025
31 %2 = load i16, i16* %arrayidx3, align 2
32 %conv = sext i16 %2 to i32
34 ; This zero-extends the 2nd operand of %mul:
35 %conv4 = zext i16 %0 to i32
37 %mul = mul nsw i32 %conv, %conv4
38 %arrayidx6 = getelementptr inbounds i16, i16* %arg2, i32 %add
39 %3 = load i16, i16* %arrayidx6, align 2
41 ; And here we only have sign-extensions. Thus, the operands of
42 ; %mul and %mul9 are not symmetrical:
43 %conv7 = sext i16 %3 to i32
44 %conv8 = sext i16 %1 to i32
46 %mul9 = mul nsw i32 %conv7, %conv8
47 %add10 = add i32 %mul, %mac1.026
48 %add11 = add i32 %add10, %mul9
49 %exitcond = icmp ne i32 %add, %arg
50 br i1 %exitcond, label %for.body, label %for.cond.cleanup