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<p class="MsoNormal">for.body: ; preds = %for.body.lr.ph, %for.body<o:p></o:p></p>
<p class="MsoNormal"><b><u> %ACC.sroa.0.013 = phi i64 [ 0, %for.body.lr.ph ], [ %phitmp9, %for.body ]<o:p></o:p></u></b></p>
<p class="MsoNormal"><b><u> %ACC.sroa.4.012 = phi i64 [ 0, %for.body.lr.ph ], [ %tmp.sroa.2.0.extract.shift, %for.body ]<o:p></o:p></u></b></p>
<p class="MsoNormal"> %i.011 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]<o:p></o:p></p>
<p class="MsoNormal"> %arrayidx = getelementptr inbounds i16* %ary, i32 %i.011<o:p></o:p></p>
<p class="MsoNormal"> %0 = load i16* %arrayidx, align 2, !tbaa !1<o:p></o:p></p>
<p class="MsoNormal"> %add = add i32 %i.011, 8<o:p></o:p></p>
<p class="MsoNormal"> %arrayidx1 = getelementptr inbounds i16* %ary, i32 %add<o:p></o:p></p>
<p class="MsoNormal"> %1 = load i16* %arrayidx1, align 2, !tbaa !1<o:p></o:p></p>
<p class="MsoNormal"> %2 = tail call i64 @llvm.arc.ACC40.GUARD.MUL.SQ15.SQ15(i16 %0, i16 %1) #1<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:14.0pt"> <b><u>%L.sroa.0.0.insert.insert.i = or i64 %ACC.sroa.0.013, %ACC.sroa.4.012<o:p></o:p></u></b></span></p>
<p class="MsoNormal"> %3 = tail call i64 @llvm.arc.ADD.ACC40(i64 %L.sroa.0.0.insert.insert.i, i64 %2) #1<o:p></o:p></p>
<p class="MsoNormal"> <b><u>%tmp.sroa.2.0.extract.shift = and i64 %3, -4294967296<o:p></o:p></u></b></p>
<p class="MsoNormal"> %inc = add i32 %i.011, 1<o:p></o:p></p>
<p class="MsoNormal"> <b><u>%phitmp9 = and i64 %3, 4294967295<o:p></o:p></u></b></p>
<p class="MsoNormal"> %cmp = icmp ult i32 %inc, %limit<o:p></o:p></p>
<p class="MsoNormal"> br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The value of the OR is simply the PHI of %3 and 0. Nobody detects this and it generates pretty ugly code in a loop. Can you tell me what phase should handle this simple transform? That is, what phase does this kind of transformation
belong in?<o:p></o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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