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<div class="moz-cite-prefix">On 3/4/15 10:13 PM, Yuxi Chen wrote:<br>
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<div>Hi all,<br>
<br>
I am newbie for llvm. I just create a global variable, there
are some statements in my pass like:<br>
<br>
LoadInst* int64_64 = new LoadInst(pthreadPID, "", false,
OptAplusOne);<br>
int64_64->setAlignment(8);<br>
<br>
int64_64->dump();<br>
LoadInst* int32_65 = new LoadInst(gvar_int32_myFlag, "",
false, OptAplusOne);<br>
int32_65->setAlignment(4);<br>
<br>
int32_65->dump();<br>
<br>
But when I run my pass, it generates an error, I don't know
why.<br>
<br>
@myFlag = global i32 0, align 4<br>
@myPid = common global [20 x i64] zeroinitializer, align 16
//this is the global,
<br>
%117 = load i64* %t, align 8<br>
%118 = load i32* @myFlag, align 4<br>
While deleting: i32* %myFlag<br>
Use still stuck around after Def is destroyed:@myFlag = global
i32 <null operand!>, align 4<br>
<br>
I am sure I initialize the global variable myFlag, I don't
delete this global variable.<br>
<br>
Can anyone give some hints, or suggestions? <br>
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<br>
What code is printing the "While deleting:" text? Is it your code
that prints that, or is it some existing LLVM pass?<br>
<br>
It looks like something is trying to remove the myFlag global
variable, but I don't know what code is trying to do that. I
suggest you find that code and figure out why it's trying to remove
a global variable that you're still using.<br>
<br>
Regards,<br>
<br>
John Criswell<br>
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<br>
Yuxi<br>
<br>
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<br>
<br>
<pre class="moz-signature" cols="72">--
John Criswell
Assistant Professor
Department of Computer Science, University of Rochester
<a class="moz-txt-link-freetext" href="http://www.cs.rochester.edu/u/criswell">http://www.cs.rochester.edu/u/criswell</a></pre>
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