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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/102252] svbool_t with SVE can generate invalid assembly
Date: Mon, 13 Sep 2021 14:42:33 +0000 [thread overview]
Message-ID: <bug-102252-4-1lUsOWvnje@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-102252-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102252
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Kyrylo Tkachov <ktkachov@gcc.gnu.org>:
https://gcc.gnu.org/g:512b383534785f9fc021e700a1fdda86cf0f3fe7
commit r12-3490-g512b383534785f9fc021e700a1fdda86cf0f3fe7
Author: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date: Mon Sep 13 15:40:28 2021 +0100
aarch64: PR target/102252 Invalid addressing mode for SVE load predicate
In the testcase we generate invalid assembly for an SVE load predicate
instruction.
The RTL for the insn is:
(insn 9 8 10 (set (reg:VNx16BI 68 p0)
(mem:VNx16BI (plus:DI (mult:DI (reg:DI 1 x1 [93])
(const_int 8 [0x8]))
(reg/f:DI 0 x0 [92])) [2 work_3(D)->array[offset_4(D)]+0 S8
A16]))
That addressing mode is not valid for the instruction [1] as it only
accepts the addressing mode:
[<Xn|SP>{, #<imm>, MUL VL}]
This patch rejects the register index form for SVE predicate modes.
Bootstrapped and tested on aarch64-none-linux-gnu.
[1]
https://developer.arm.com/documentation/ddi0602/2021-06/SVE-Instructions/LDR--predicate---Load-predicate-register-
gcc/ChangeLog:
PR target/102252
* config/aarch64/aarch64.c (aarch64_classify_address): Don't allow
register index for SVE predicate modes.
gcc/testsuite/ChangeLog:
PR target/102252
* g++.target/aarch64/sve/pr102252.C: New test.
next prev parent reply other threads:[~2021-09-13 14:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-09 9:41 [Bug target/102252] New: " gilles.gouaillardet at gmail dot com
2021-09-09 9:43 ` [Bug target/102252] " gilles.gouaillardet at gmail dot com
2021-09-09 10:39 ` ktkachov at gcc dot gnu.org
2021-09-09 10:56 ` ktkachov at gcc dot gnu.org
2021-09-09 11:01 ` ktkachov at gcc dot gnu.org
2021-09-13 14:42 ` cvs-commit at gcc dot gnu.org [this message]
2021-09-21 2:06 ` gilles.gouaillardet at gmail dot com
2024-01-26 6:55 ` pinskia at gcc dot gnu.org
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