On 03/23/2011 05:46 PM, Richard Henderson wrote: > On 03/23/2011 07:50 AM, Bernd Schmidt wrote: >> dwarf2out has code that starts scanning from NOTE_INSN_EPILOGUE_BEG >> until it finds the return jump. When there is common code in several >> blocks ending in a return, we might want to share this, and in that case >> it would be possible to encounter a simplejump rather than a returnjump. >> This should be safe, and the following patch allows it. > > With no more code than this, I cannot believe you're generating correct > unwind info anymore.
Why not? Are you worried about the code at the destination of the jump? That should be preceded by another block falling through into it which also has a NOTE_INSN_EPILOGUE_BEG. If that isn't the problem you have in mind, what is and how can we test for it? Bernd
