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Dear Jian,<br>
<br>
Can you be more specific about what you don't understand? Do you
not know how to write an LLVM pass that can be loaded into opt, or
do you not understand the API that an LLVM pass uses to instrument
code?<br>
<br>
In any event, make sure to read
<a class="moz-txt-link-freetext" href="http://llvm.org/docs/WritingAnLLVMPass.html">http://llvm.org/docs/WritingAnLLVMPass.html</a>. It describes how to
write a skeleton LLVM pass.<br>
<br>
-- John T.<br>
<br>
On 7/15/11 4:42 PM, Jian Cai wrote:
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style="font:inherit;font-family:arial;font-size:10pt;">Hi,
<div>
<div>I am trying to write
a pass and add it into
the LLVM optimizer so to
insert functions for
optimization before and
after every function
call.</div>
<div>For example, I create
a test file test.c.
There is a function
f1() just printing out
"Print f1", which is
called in the main
function. That's all the
test.c do. Now I want to
insert optimazation
function opt_begin()
before f1() and
opt_end() after by
adding the command line
of my pass in the
compilation option of
llvm-gcc. Does anyone
have any idea about how
to implement this? I
would really appreciate
if anyone can help me
out, since I was stuck
by this question for
really a long time.<br>
</div>
<div><br>
</div>
<div>Jian</div>
<div><br>
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<br>
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