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; RUN: opt < %s -analyze -iv-users | ||
; PR9633: Tests that SCEV handles the mul.i2 recurrence being folded to | ||
; constant zero. | ||
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define signext i8 @func_14(i8 signext %p_18) nounwind readnone ssp { | ||
entry: | ||
br label %for.inc | ||
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for.inc: | ||
%p_17.addr.012 = phi i32 [ 0, %entry ], [ %add, %for.inc ] | ||
%add = add nsw i32 %p_17.addr.012, 1 | ||
br i1 false, label %for.inc, label %for.cond | ||
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for.cond: | ||
%tobool.i = icmp ult i32 %add, 8192 | ||
%shl.i = select i1 %tobool.i, i32 13, i32 0 | ||
%shl.left.i = shl i32 %add, %shl.i | ||
%conv.i4 = trunc i32 %shl.left.i to i8 | ||
br i1 undef, label %for.inc9, label %if.then | ||
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for.inc9: | ||
%p_18.addr.011 = phi i8 [ %add12, %for.inc9 ], [ %p_18, %for.cond ] | ||
%add12 = add i8 %p_18.addr.011, 1 | ||
%mul.i2 = mul i8 %add12, %conv.i4 | ||
%mul.i2.lobit = lshr i8 %mul.i2, 7 | ||
%lor.ext.shr.i = select i1 undef, i8 %mul.i2.lobit, i8 %mul.i2 | ||
%tobool = icmp eq i8 %lor.ext.shr.i, 0 | ||
br i1 %tobool, label %for.inc9, label %if.then | ||
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if.then: | ||
ret i8 0 | ||
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} |