On 7 Jan 2013, at 23:21, Dimitry Andric wrote: > This is at least the direction I'm looking at. It seems that in some > cases with __builtin_eh_return(), llvm does not see that registers can > be clobbered, and it doesn't save and restore them. Do you mean that some registers were clobbered by a prior call? __builtin_eh_return() doesn't return, so whether it clobbers anything or not isn't something that should matter. The preceding call is __builtin_frob_return_addr, which seems to be a no-op, so it shouldn't clobber any registers either... DavidReceived on Tue Jan 08 2013 - 07:08:21 UTC
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