http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46479
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
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CC| |law at redhat dot com
--- Comment #1 from Jeffrey A. Law <law at redhat dot com> 2010-11-15 14:34:08
UTC ---
Isn't the "+m" (*regs) is an in/out operand and doesn't it have to be valid
throughout the entire asm and thus its memory address can't be held by %eax
because %eax is used elsewhere in the asm as an input and an output?
I'm not aware of a way to handle the second case where we want to show a memory
read/write effect, but not consume any resources. I can see how that would be
valuable
