https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Roger Sayle changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
--- Comment #15 from Maxim Kuvyrkov ---
(In reply to Maxim Kuvyrkov from comment #13)
> We are seeing scan-assembler failures in a single 32-bit arm test. This
> affects both linux and bare-metal targets: arm-linux-gnueabihf and
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Christophe Lyon changed:
What|Removed |Added
CC||clyon at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Maxim Kuvyrkov changed:
What|Removed |Added
CC||mkuvyrkov at gcc dot gnu.org
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
--- Comment #12 from Richard Sandiford ---
I don't object to the patch, but for the record: the current heuristics go back
a long way. Although I reworked the pass to use rtl-ssa a few years ago, I
tried as far as possible to preserve the old
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
--- Comment #11 from GCC Commits ---
The master branch has been updated by Roger Sayle :
https://gcc.gnu.org/g:86de9b66480b710202a2898cf513db105d8c432f
commit r14-8319-g86de9b66480b710202a2898cf513db105d8c432f
Author: Roger Sayle
Date: Sun
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
--- Comment #10 from Roger Sayle ---
A revised and improved patch has been posted for review at
https://gcc.gnu.org/pipermail/gcc-patches/2024-January/643062.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Richard Biener changed:
What|Removed |Added
CC||rsandifo at gcc dot gnu.org
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Roger Sayle changed:
What|Removed |Added
Status|NEW |ASSIGNED
Assignee|unassigned
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
--- Comment #7 from Roger Sayle ---
Very many thanks to Jeff Law for pointing me to fwprop. The following simple
patch also fixes this regression.
diff --git a/gcc/fwprop.cc b/gcc/fwprop.cc
index 0c588f8..cbba44e 100644
--- a/gcc/fwprop.cc
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
--- Comment #6 from Roger Sayle ---
Sorry for the delay in replying/answering Jakub's questions/comments. Yes,
using a define_insn_and_split in the backend fixes/works around the issue (and
I agree your implementation/refinement in comment #5
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Jakub Jelinek changed:
What|Removed |Added
CC||segher at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
--- Comment #3 from Roger Sayle ---
This patch addresses the regression, but probably isn't the correct fix.
The issue is that the backend now has a way of representing the concatenation
of two registers (for example, TI is constructed for two
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
--- Comment #2 from Roger Sayle ---
Created attachment 56162
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56162=edit
proof-of-concept patch
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Richard Biener changed:
What|Removed |Added
Ever confirmed|0 |1
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111267
Richard Biener changed:
What|Removed |Added
Summary|Codegen regression from |[14 Regression] Codegen
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