[LLVMdev] Run several LLVM Passes automatically with clang

[Gaoyao Xiao]

Hi,

I want to run several LLVM passes on the IR when clang compiles source
code. I know the passes can run in this way "clang -Xclang -load -Xclang
/path/to/LLVMpass.so src.c -o bin". The time when the pass is executed can
be determined through selecting a ExtensionPointTy. However,
ExtensionPointTy does not allow me to specify the order of execution of my
pass. My question is: If I want to run three passes, including
LLVMMypass1.so, LLVMMypass2.so, inline (provided by LLVM), how should I
specify the optimization flag of Clang?

Many thanks!
Gaoyao
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