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[Bug target/64331] regcprop propagates registers noted as REG_DEAD
- From: "senthil_kumar.selvaraj at atmel dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 17 Dec 2014 02:33:49 +0000
- Subject: [Bug target/64331] regcprop propagates registers noted as REG_DEAD
- Auto-submitted: auto-generated
- References: <bug-64331-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64331
--- Comment #4 from Senthil Kumar Selvaraj <senthil_kumar.selvaraj at atmel dot com> ---
Yes, running df_notes_add_problem and df_analyze in the target code does work.
Is it just REG_USED/REG_DEAD notes, or is register liveliness
(df_regs_ever_live_p etc..) also not guaranteed to be up to date?