[LLVMdev] How to prevent Dead-Code-Elimination pass removing pseudo-instructions ADJCALLSTACK(DOWN | UP)?

杨勇勇 triple.yang at gmail.com
Tue Sep 3 23:56:55 PDT 2013

Hi, LLVMer.

I use pseudo-instructions ADJCALLSTACK(DOWN | UP) to adjust call stacks,
and it works well with "-O0" option. However, ADJCALLSTACK(DOWN | UP) are
removed during codegen DCE pass under "-O2".

What have I ignored?


杨勇勇 (Yang Yong-Yong)
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