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...th opt. I want to use opt to apply one optimization pass to a .bc file. However, I encounter some problems which I failed to find the answers on the internet. Any suggestions are highly appreciated. Question 1: For example, I issued the following command $: opt-trunk -si-lower-control-flow t.c_00.bc -o t.c_01.bc Then I got the following error, -------------------------------------------------------------- Error Start -------------------------------------------------------------- Pass 'SI Lower control flow pseudo instructions' is not initialized. Verify if there is a pass depend...