https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108016
--- Comment #7 from Alexey Merzlyakov ---
> For DSE to kick in, I'm pretty sure we'd need to eliminate the memory load
> first. Eliminating the memory load will likely be nontrivial.
For this, I think we could start from loads that was partiall
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119519
Alexey Merzlyakov changed:
What|Removed |Added
CC||alexey.merzlyakov at samsung
dot c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119099
--- Comment #8 from Alexey Merzlyakov ---
Oops... It looks like we've submitted the patch in maillist in parallel two
times.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119099
--- Comment #7 from Alexey Merzlyakov ---
> That should result in the livein sets never contracting. That API will return
> a boolean indicating if that livein set actually changed. Now I just have to
> see if there's any fallout.
Thanks for n
Assignee: unassigned at gcc dot gnu.org
Reporter: alexey.merzlyakov at samsung dot com
Target Milestone: ---
Created attachment 60644
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60644&action=edit
Reduced test-case
The following code c-reduced from csmith ge
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108016
--- Comment #5 from Alexey Merzlyakov ---
For "Item3" (extra sign extension): it seem that a slightly more elegant
solution was found - generate sign_extend(plus) + subreg chain during
expand-rtx.
Currently expanding code snippet for umulv4:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108016
Alexey Merzlyakov changed:
What|Removed |Added
CC||alexey.merzlyakov at samsung
dot c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117688
Alexey Merzlyakov changed:
What|Removed |Added
CC||alexey.merzlyakov at samsung
dot c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117476
--- Comment #25 from Alexey Merzlyakov
---
Updates on GCC regression testing:
Locally checked the GCC make check with enable-languages=all before the
patching vs. r15-4991-g69bd93c167fefb + fix we are discussing in this ticket.
Testing was perf
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117476
--- Comment #16 from Alexey Merzlyakov
---
Current situation is:
Patch was tested locally, and it seem to eliminate the problem in incorrect
subreg mode check. The following regressions were fixed:
* Reported here and in pr117480 testcases on
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117476
--- Comment #11 from Alexey Merzlyakov
---
Analysis shown that the problem seem is related to incorrect check in the
optimization, introduced by the aforementioned patch:
(zero_extend:M (subreg:N (not:M (X:M -> (xor:M (X:M, mask))
In
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117476
--- Comment #7 from Alexey Merzlyakov ---
Thank you for the issue simplification the repro-case. Confirming: the problem
exists on trunk since r15-4991-g69bd93c167fefb. Working on it.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112398
Alexey Merzlyakov changed:
What|Removed |Added
CC||alexey.merzlyakov at samsung
dot c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60758
--- Comment #9 from Alexey Merzlyakov ---
The following PR has been opened for Thumb1 problem:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61223
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60758
--- Comment #8 from Alexey Merzlyakov ---
Created attachment 32820
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32820&action=edit
Fix for thumb fail
Proposed bugfix (build OK, but not regtested).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60758
--- Comment #7 from Alexey Merzlyakov ---
The problem does not appear for thumb2 targets.
On older architectures (armv6 and below) in thumb-mode the LR indeed can not be
used as argument of POP instruction.
To support __cxa_end_cleanup backtraci
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60758
--- Comment #6 from Alexey Merzlyakov ---
The issue was reproduced at my side.
Let me make necessary investigations to fix the problem as soon as possible.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60758
--- Comment #3 from Alexey Merzlyakov ---
Thank you very much!
Reg. test - no changes.
http://gcc.gnu.org/ml/gcc-patches/2014-04/msg00195.html
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60758
--- Comment #1 from Alexey Merzlyakov ---
Created attachment 32543
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32543&action=edit
Proposed patch
Proposed patch is attached.
++
Assignee: unassigned at gcc dot gnu.org
Reporter: alexey.merzlyakov at samsung dot com
CC: v.garbuzov at samsung dot com, y.gribov at samsung dot com
Target: arm
Created attachment 32542
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32
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