On 12/15/2021 1:22 AM, Alexandre Oliva wrote:
On Dec 9, 2021, Jeff Law <jeffreya...@gmail.com> wrote:
I found a similar pattern of issuing clobbers for multi-word moves, but
not when reload_in_progress, in expr.c:emit_move_complex_parts. I don't
have a testcase, but I'm tempted to propose '!lra_in_progress &&' for it
as well. Can you think of any reason not to?
The only reason I can think of is we're in stage3 :-) It'd be a lot
easier to green light that if we could trigger an issue.
I have not found the cycles to try to construct a testcase to trigger
the issue, but before moving on, I have regstrapped this on
x86_64-linux-gnu, so, at least for now, I propose it for the next
release cycle. Ok to install then?
[PR103302] skip multi-part clobber during lra for complex parts too
From: Alexandre Oliva <ol...@adacore.com>
As with the earlier patch, avoid emitting clobbers that we used to
avoid during reload also during LRA, now when moving complex
multi-part values. We don't have a testcase for this one.
for gcc/ChangeLog
PR target/103302
* expr.c (emit_move_complex_parts): Skip clobbers during lra.
OK for the next cycle.
jeff
