Profiling file not generated #62

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1. chipbuster commented on Jun 4, 2015

   

   chipbuster

   on Jun 4, 2015

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   I've been getting a similar issue, though not entirely identical (the symptom is the same as the title of this issue, so I'll leave it here). In my case, main() is not having an endProfiling call placed before the return (following snippet is from main() in IR):

   ; <label>:157                                  ; preds = %151, %147, %144
     ret i32 0                                    ; corresponds to `return 0` at the end of main()
   
   ; <label>:158                                  ; preds = %113
     %159 = load i8** %4
     %160 = load i32* %5
     %161 = insertvalue { i8*, i32 } undef, i8* %159, 0
     %162 = insertvalue { i8*, i32 } %161, i32 %160, 1
     resume { i8*, i32 } %162
   }
   

   Curiously, when the code is compiled under -O3 or -O2, the correct endProfiling() call is inserted.

   The code is the single-threaded LULESH benchmark.
2. karthikp-ubc

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   karfair

   on Jun 20, 2015
3. karfair commented on Jun 26, 2015

   

   karfair

   on Jun 26, 2015

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   @flyree Could you point me to the file you were using so that I can reproduce this bug? Thanks.
4. flyree commented on Jun 26, 2015

   

   flyree

   on Jun 26, 2015

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   Hi Phil,

   I have found that it might be because that LLFI cannot deal with exception handling in C++ well. The program I am using is complex, but I guess you can find a c++ file with exception blocks (try/catch) and see how it goes.

   Bo