[LLVMdev] Problem with MemoryDependenceAnalysis

[Amr Yehia]

Devang Patel wrote:
> On Mar 20, 2009, at 8:13 AM, Amr Yehia wrote:
>
>   
>> Dear all,
>>
>> I am having a problem adding a MemoryDependenceAnalysis pass to a  
>> Module
>> Pass i created, it gives me the following error when i  add
>> (Info.addRequired<MemoryDependenceAnalysis>();) it in the
>> getAnalysisUsage(AnalysisUsage &Info) function.
>>
>>     
> If MemoryDependenceAnalysis requires any module level analysis then it  
> won't work.
>   

Does that mean i can't call it from a Module pass?

>> adding callgraph pass ... done
>> opt: /net/home/yehia/llvm/llvm-2.4/include/llvm/Target/TargetData.h: 
>> 114:
>> llvm::TargetData::TargetData(): Assertion `0 && "ERROR: Bad TargetData
>> ctor used.  " "Tool did not specify a TargetData to use?"' failed.
>>     
>
> Can you send entire list of passes you're using on 'opt' command line?
>   
I am loading the CallGraph pass before it from my module
Info.addRequired<CallGraph>();
Info.addPreserved<CallGraph>();
and from opt i tried first to call my module only and then tried to call 
-memdep before calling my module, but both gave the same errors
opt $OPT_OPTIONS -load 
${LLVM_PATH}/Release/lib/.libs/libDFGMODULEPASS.so -DFGModulePass < $2.bc
and
opt $OPT_OPTIONS -load 
${LLVM_PATH}/Release/lib/.libs/libDFGMODULEPASS.so -memdep 
-DFGModulePass < $2.bc


by the way ... i found another mail addressing the same problem as i 
have in the mailing list archive but i couldn't find a reply
the message was sent by jeffhao on Thu, 26 Feb 2009 17:39:32 -0500


thank you.





> -
> Devang
>   
>> adding DependenceFlowGraph_FunctionAnalaysis_Pass ...  
>> doneopt[0x75627f]
>> /lib64/libc.so.6[0x3880a30070]
>> /lib64/libc.so.6(gsignal+0x35)[0x3880a30015]
>> /lib64/libc.so.6(abort+0x110)[0x3880a31980]
>> /lib64/libc.so.6(__assert_fail+0xf6)[0x3880a29726]
>> opt[0x6709bd]
>> opt(_ZN4llvm17PMTopLevelManager12schedulePassEPNS_4PassE+0x125) 
>> [0x6efa75]
>> opt(_ZN4llvm17PMTopLevelManager12schedulePassEPNS_4PassE+0x190) 
>> [0x6efae0]
>> opt(_ZN4llvm13MPPassManager25addLowerLevelRequiredPassEPNS_4PassES2_ 
>> +0xcc)[0x6f1dfc]
>> opt(_ZN4llvm13PMDataManager3addEPNS_4PassEb+0x2a7)[0x6f4237]
>> opt(main+0x348)[0x485ac8]
>> /lib64/libc.so.6(__libc_start_main+0xf4)[0x3880a1d8a4]
>> opt(sinh+0x39)[0x47b1f9]
>>
>>
>> i tried a work around by creating another function pass and adding the
>> MemoryDependenceAnalysis pass to it (i didn't try to get the  
>> analysis).
>> it doesn't give errors if i only call the function pass i created  
>> alone,
>> but if i add this function pass to the module pass it gives the same  
>> error.
>>
>> so here is a brief:
>> adding MemoryDependenceAnalysis to a module pass -> fail
>> adding MemoryDependenceAnalysis to function pass -> success
>> adding a function pass that contains MemoryDependenceAnalysis to a
>> module pass -> fail
>> adding the same function pass without containing
>> MemoryDependenceAnalysis to the module pass -> success
>> _______________________________________________
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>>     
>
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