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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86270] [10/11/12/13/14 Regression] Simple
 loop needs an extra register and an extra instruction
Date: Tue, 30 May 2023 08:00:10 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
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X-Bugzilla-Keywords: missed-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D86270

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2018-06-22 00:00:00         |2023-5-30

--- Comment #14 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is still an extra move inside the loop:
.L3:
        movq    %rax, %rdx
        movl    %eax, (%rsi,%rax,4)
        addq    $1, %rax
        cmpq    %rcx, %rdx
        jne     .L3=