[LLVMdev] Problem with MemoryDependenceAnalysis

[Amr Yehia]

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.


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.
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