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[Bug target/46915] Wrong code is generated for conditional branch followed by zero length asm
- From: "dave at hiauly1 dot hia.nrc.ca" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 13 Dec 2010 12:44:40 +0000
- Subject: [Bug target/46915] Wrong code is generated for conditional branch followed by zero length asm
- Auto-submitted: auto-generated
- References: <bug-46915-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46915
--- Comment #9 from dave at hiauly1 dot hia.nrc.ca 2010-12-13 12:44:21 UTC ---
> Yeah, the insn count for asm is just a guess. You should never put inline asm
> into a delay slot, you really don't know how big it is or if it is suitable for
> the delay slot.
> I guess the bug is in checking just for ASM_INPUT, that should be also testing
> extract_asm_operands () != NULL_RTX.
Thanks, I'll look at that. However, I think branch_to_delay_slot_p can
be improved. It probably should also check for asms and return FALSE
if it finds one.
Dave