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<p><span id="docs-internal-guid-4586ff7c-4fbd-ec3d-950f-059b66b1d613"></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">Hello,
</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">I have a question regarding results of CallGraphSCCPass.</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">When running CallGraphSCCPass on a bitcode of C++ class
which has user defined data member, I expect CallGraphSCCPass to report the constructor of the data member before the constructor of the first class. However, this is not the case.</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">For example:</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">class point</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">{</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">point(int _x, int _y)</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;"><span class="Apple-tab-span" style="white-space:pre;"></span></span><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">:
x(_x)</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;"><span class="Apple-tab-span" style="white-space:pre;"></span></span><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">,
y(_y)</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">{</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">}</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">int x, y;</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">};</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">class rectangle</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">{</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">rectangle (int x1, int y1, int x2, int y2)</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;"><span class="Apple-tab-span" style="white-space:pre;"></span></span><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">:
p1(x1, y1)</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;"><span class="Apple-tab-span" style="white-space:pre;"></span></span><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">,
p2(x2, y2)</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">{</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">}</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">point p1;</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">point p2;</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">};</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">In llvm IR, I can see point’s constructor called from
rectangle’s constructor. However when I run a custom CallGraphSCCPass, point’s constructor is not reported to be called from rectangle’s constructor. Interestingly, if I separate these classes into separate modules, and run the pass only on rectangle’s module,
then it reports point’s constructor as a callee of rectangle’s constructor. </span>
</p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">The problem is also there when running dot-callgraph pass
of opt. Rectangle’s constructor in a call graph is connected to an external node, instead of constructor of point.</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">Could you please explain whether it is an expected behavior
and if so what are the reasons behind it? Or is this a bug?</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">Please let me know if you need any further details.</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">Thanks,</span></p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 11pt; font-family: Arial; background-color: transparent; vertical-align: baseline; white-space: pre-wrap;">Anahit.</span></p>
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<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"> </p>
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