when compiling the IR api codes, "g++ internal error" occurred.

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1

Hello~!

I¡¯m beginner about LLVM.

My purpose is inserting a function call to basic block, which is composed of IR codes.

For this, I did following works.

  1. Generate bytecodes from c++ codes

  2. Generate the C++ codes, composed of LLVM APIs.

$ llc –march=cpp main.bc -o=main_irgen.cpp

  1. Insert function call APIs to the generated C++ codes from step 2)

  2. Compile the functional call inserted codes.

$ g++ -O2 main_irgen.cpp llvm-config --cxxflags --ldflags --libs core -o main_irgen.cpp

→ In this step, an error occurred. The messages are as follows

g++: Internal error: segmentation fault (program cc1plus)

When the generated ¡°main_irgen.cpp¡± file had 3000~4000 code lines, no error occurred. But, the file had over 30000 code lines, internal error occurred.

It was likely that the memory was lacking. But the computer memory is 4G.

If you know, give me the way to solve or solution.

Thank¡¯U.

2

If you need to import a IR file that large, you should use the bitcode
reader instead of compiling it into your program with "llc
-march=cpp". The relevant call is llvm::ParseBitcodeFile.

-Eli