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[Bug bootstrap/52397] [4.7 regression] comparison failure with Ada enabled
- From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 27 Feb 2012 12:04:16 +0000
- Subject: [Bug bootstrap/52397] [4.7 regression] comparison failure with Ada enabled
- Auto-submitted: auto-generated
- References: <bug-52397-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52397
--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-02-27 12:04:16 UTC ---
> What is specific about FUNCTION_ARG_REGNO_P regs?
We know more or less how they behave. They (may) hold arguments on entry and
thus have an artificial def in the entry block.
> We generally need to either reset, or adjust debug insns that refer registers
> that aren't live at that point when ignoring the debug insn uses.
Sure, but doing it correctly for any hard register might prove tricky.