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[Bug target/69613] [6 Regression] wrong code with -O and simple 128bit arithmetics and vectors @ aarch64
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 03 Feb 2016 13:40:01 +0000
- Subject: [Bug target/69613] [6 Regression] wrong code with -O and simple 128bit arithmetics and vectors @ aarch64
- Auto-submitted: auto-generated
- References: <bug-69613-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69613
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah,
(insn 12 11 13 (set (reg:DI 85)
(lshiftrt:DI (subreg:DI (reg/v:OI 79 [ v32u128_1 ]) 0)
(const_int 1 [0x1]))) pr69613-3.c:19 -1
(nil))
and similar shifts by 1 look just weird when the TImode shift is with variable
shift count.