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You are mostly likely using a Release build. -stats only does
anything with Assertions enabled. <br>
<br>
<div class="moz-cite-prefix">On 02/18/2015 08:58 AM, Rob Stewart
wrote:<br>
</div>
<blockquote
cite="mid:CA+ZOasL9QLedNCxFe52=Q0qgtD4-R+kXkXQtGTSkBsEV7HUpuw@mail.gmail.com"
type="cite">
<div dir="ltr"><span
style="font-size:13.1999998092651px;line-height:19.7999992370605px">Given
the program:</span>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px"><br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">
<div>int sum(int i,int j)</div>
<div>{ return i+j; }</div>
<div><br>
</div>
<div>int main()</div>
<div>{ sum(3,2); }</div>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px"><br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">$
clang -S -emit-llvm foo.c<br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px"><br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">Now
I'd like to print all statistics. Unfortunately, the following
prints nothing:</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px"><br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">$
opt -S -O3 -stats < foo.ll > /dev/null<br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px"><br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">However,
running the following prints an IR that is different to the
contents of foo.ll:</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px"><br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">$
opt -S -O3 foo.ll<br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px"><br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">I'm
using LLVM 3.5. <span style="font-size:13.1999998092651px">I'm
doing something very obviously wrong. What is it?</span></div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px"><br>
</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">--</div>
<div
style="font-size:13.1999998092651px;line-height:19.7999992370605px">Rob</div>
</div>
<br>
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<br>
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</pre>
</blockquote>
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