[LLVMdev] some of Basic blocks are deleted after running embedded ExecutionEngine

[Lang Hames]

Hi Henry,

The ExecutionEngine owns any module that you pass to it, and it may make
modifications to the module even at O0. If you want to preserve the
existing module as-is you'll need to clone it and pass the clone to the
ExecutionEngine instead.

Cheers,
Lang.

On Tue, Nov 25, 2014 at 7:30 AM, David Blaikie <dblaikie at gmail.com> wrote:

> +Lang for jit things
> On Nov 24, 2014 11:15 PM, "Henry Chung" <zhguanwen at gmail.com> wrote:
>
>> Hi llvm-ers,
>>
>> I have integrated an ExecutionEngine in my pass, before I run the
>> execution engine, I check the program has 32 basic blocks. However, after I
>> run the execution engine, the number of basic blocks is 30. Two basic
>> blocks are deleted by the embedded JIT execution engine.
>>
>> Does the ExecutionEngine perform any optimization? If yes, how can I
>> disable it?
>>
>> Thanks,
>> Henry
>>
>>
>>
>>
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>>
>>
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