[LLVMdev] How to get the debug information for an LLVM IR type?
uraj.wp at gmail.com
Mon Jan 21 07:10:32 PST 2013
Thank you, Duncan. Then how about the composite types, especially struct and class types? I think they are more distinguishable from each other.
> Hi Pei Wang,
> On 19/01/13 22:34, Pei Wang wrote:
/>/> I am now trying to do some code analysis and need to get the debug information
/>/> of the LLVM IR type encountered in the bitcode.
> I don't think this is going to work, because many different types in the
> original language map to the same LLVM IR type. For example the C types "int"
> and "unsigned" both become "i32" in LLVM. Yet "int" and "unsigned" have
> different debug info AFAIK, so which debug info should "i32" be mapped too?
> Ciao, Duncan.
/>/> In detail, given a LLVM Type object, is it possible for me to retrieve the
/>/> corresponding DIType (or MDNode) object? I feel LLVM should be able to know
/>/> everything about a type, if the source file is compiled with the -g option by
/>/> clang. I tried various methods but none of them allows me to connect a specific
/>/> Type with its debug information.
/>/> Any one knows how to achieve this? Thank you in advance.
/>/> Pei Wang/
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