1; RUN: opt -mtriple=armv8m.main-none-none-eabi -mattr=+dsp < %s -arm-parallel-dsp -S | FileCheck %s 2; 3; Muls with operands that are constants: not yet supported, so the rewrite 4; should not trigger (but we do want to add this soon). 5; 6; CHECK-NOT: call i32 @llvm.arm.smlad 7; 8define dso_local i32 @test(i32 %arg, ptr nocapture readnone %arg1, ptr nocapture readonly %arg2, ptr nocapture readonly %arg3) { 9entry: 10 %cmp24 = icmp sgt i32 %arg, 0 11 br i1 %cmp24, label %for.body.preheader, label %for.cond.cleanup 12 13for.body.preheader: 14 %.pre = load i16, ptr %arg3, align 2 15 %.pre27 = load i16, ptr %arg2, align 2 16 br label %for.body 17 18for.cond.cleanup: 19 %mac1.0.lcssa = phi i32 [ 0, %entry ], [ %add11, %for.body ] 20 ret i32 %mac1.0.lcssa 21 22for.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 %add = add nuw nsw i32 %i.025, 1 26 %arrayidx3 = getelementptr inbounds i16, ptr %arg2, i32 %i.025 27 %v2 = load i16, ptr %arrayidx3, align 2 28 %conv = sext i16 %v2 to i32 29 30; RHS operand of this mul is a constant 31 %mul = mul nsw i32 %conv, 43 32 33 %arrayidx6 = getelementptr inbounds i16, ptr %arg2, i32 %add 34 %v3 = load i16, ptr %arrayidx6, align 2 35 %conv7 = sext i16 %v3 to i32 36 37; And this RHS operand is a constant too. 38 %mul9 = mul nsw i32 %conv7, 42 39 40 %add10 = add i32 %mul, %mac1.026 41 %add11 = add i32 %mul9, %add10 42 %exitcond = icmp ne i32 %add, %arg 43 br i1 %exitcond, label %for.body, label %for.cond.cleanup 44} 45 46