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* [Bug rtl-optimization/4079] unnecessary register move on simple code [not found] <bug-4079-153@http.gcc.gnu.org/bugzilla/> @ 2007-02-02 0:59 ` pinskia at gcc dot gnu dot org 2007-02-02 1:05 ` pinskia at gcc dot gnu dot org 1 sibling, 0 replies; 3+ messages in thread From: pinskia at gcc dot gnu dot org @ 2007-02-02 0:59 UTC (permalink / raw) To: gcc-bugs ------- Comment #8 from pinskia at gcc dot gnu dot org 2007-02-02 00:58 ------- Hmm, I see in expand: (insn 12 14 13 (set (subreg:SI (reg:DI 124) 4) (lshiftrt:SI (subreg:SI (reg:DI 123) 0) (const_int 0 [0x0]))) -1 (nil) (expr_list:REG_NO_CONFLICT (reg:DI 123) (nil))) That makes little sense as the shift amount is 0. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=4079 ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug rtl-optimization/4079] unnecessary register move on simple code [not found] <bug-4079-153@http.gcc.gnu.org/bugzilla/> 2007-02-02 0:59 ` [Bug rtl-optimization/4079] unnecessary register move on simple code pinskia at gcc dot gnu dot org @ 2007-02-02 1:05 ` pinskia at gcc dot gnu dot org 1 sibling, 0 replies; 3+ messages in thread From: pinskia at gcc dot gnu dot org @ 2007-02-02 1:05 UTC (permalink / raw) To: gcc-bugs ------- Comment #9 from pinskia at gcc dot gnu dot org 2007-02-02 01:05 ------- So I think the problem here now (after lower subreg was added) is the issue of splitting of the multiplication late after reload. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=4079 ^ permalink raw reply [flat|nested] 3+ messages in thread
[parent not found: <bug-4079-4@http.gcc.gnu.org/bugzilla/>]
* [Bug rtl-optimization/4079] unnecessary register move on simple code [not found] <bug-4079-4@http.gcc.gnu.org/bugzilla/> @ 2023-05-16 23:46 ` pinskia at gcc dot gnu.org 0 siblings, 0 replies; 3+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-05-16 23:46 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=4079 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work| |8.1.0 Target Milestone|--- |8.0 Status|SUSPENDED |RESOLVED Known to fail| |4.8.5 Resolution|--- |FIXED --- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> --- This has been fixed for a while. At least in GCC 8. Maybe even before. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-05-16 23:46 UTC | newest]
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[not found] <bug-4079-153@http.gcc.gnu.org/bugzilla/>
2007-02-02 0:59 ` [Bug rtl-optimization/4079] unnecessary register move on simple code pinskia at gcc dot gnu dot org
2007-02-02 1:05 ` pinskia at gcc dot gnu dot org
[not found] <bug-4079-4@http.gcc.gnu.org/bugzilla/>
2023-05-16 23:46 ` pinskia at gcc dot gnu.org
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