1; RUN: opt -mtriple=armv8m.main-none-none-eabi -mattr=+dsp < %s -arm-parallel-dsp -S | FileCheck %s 2; 3; Mul with operands that are not simple load and sext/zext chains: this is not 4; yet supported so the rewrite shouldn't trigger (but we do want to support this 5; soon). 6; 7; CHECK-NOT: call i32 @llvm.arm.smlad 8; 9define dso_local i32 @test(i32 %arg, ptr nocapture readnone %arg1, ptr nocapture readonly %arg2, ptr nocapture readonly %arg3, ptr %arg4) { 10entry: 11 %cmp24 = icmp sgt i32 %arg, 0 12 br i1 %cmp24, label %for.body.preheader, label %for.cond.cleanup 13 14for.body.preheader: 15 %.pre = load i16, ptr %arg3, align 2 16 %.pre27 = load i16, ptr %arg2, align 2 17 %gep1 = getelementptr inbounds i16, ptr %arg4, i32 1 18 %.add4 = load i16, ptr %arg4, align 2 19 %.add5 = load i16, ptr %gep1, align 2 20 %.zext4 = zext i16 %.add4 to i32 21 %.zext5 = zext i16 %.add5 to i32 22 br label %for.body 23 24for.cond.cleanup: 25 %mac1.0.lcssa = phi i32 [ 0, %entry ], [ %add11, %for.body ] 26 ret i32 %mac1.0.lcssa 27 28for.body: 29 %mac1.026 = phi i32 [ %add11, %for.body ], [ 0, %for.body.preheader ] 30 %i.025 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ] 31 %arrayidx = getelementptr inbounds i16, ptr %arg3, i32 %i.025 32 %0 = load i16, ptr %arrayidx, align 2 33 %add = add nuw nsw i32 %i.025, 1 34 %arrayidx1 = getelementptr inbounds i16, ptr %arg3, i32 %add 35 %1 = load i16, ptr %arrayidx1, align 2 36 %arrayidx3 = getelementptr inbounds i16, ptr %arg2, i32 %i.025 37 %2 = load i16, ptr %arrayidx3, align 2 38 %conv = sext i16 %2 to i32 39 %conv4 = sext i16 %0 to i32 40 %add1 = add i32 %conv, %.zext4 41 42; This mul has a more complicated pattern as an operand, %add1 43; is another add and load, which we don't support for now. 44 %mul = mul nsw i32 %add1, %conv4 45 %arrayidx6 = getelementptr inbounds i16, ptr %arg2, i32 %add 46 %3 = load i16, ptr %arrayidx6, align 2 47 %conv7 = sext i16 %3 to i32 48 %conv8 = sext i16 %1 to i32 49 %add2 = add i32 %conv7, %.zext5 50 51; Same here 52 %mul9 = mul nsw i32 %add2, %conv8 53 %add10 = add i32 %mul, %mac1.026 54 55 %add11 = add i32 %mul9, %add10 56 %exitcond = icmp ne i32 %add, %arg 57 br i1 %exitcond, label %for.body, label %for.cond.cleanup 58} 59