From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2093) id E17DA3894409; Tue, 13 Jul 2021 06:10:53 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E17DA3894409 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Kito Cheng To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-2268] docs: Add 'S' to Machine Constraints for RISC-V X-Act-Checkin: gcc X-Git-Author: Kito Cheng X-Git-Refname: refs/heads/master X-Git-Oldrev: f546e2b6cc5c610ae18aac274d0d6493f2da3801 X-Git-Newrev: 18a463bb666cc8f3421589e7641ec617acb84741 Message-Id: <20210713061053.E17DA3894409@sourceware.org> Date: Tue, 13 Jul 2021 06:10:53 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 Jul 2021 06:10:54 -0000 https://gcc.gnu.org/g:18a463bb666cc8f3421589e7641ec617acb84741 commit r12-2268-g18a463bb666cc8f3421589e7641ec617acb84741 Author: Kito Cheng Date: Fri Jul 2 10:19:30 2021 +0800 docs: Add 'S' to Machine Constraints for RISC-V It was undocument before, but it might used in linux kernel for resolve code model issue, so LLVM community suggest we should document that, so that make it become supported/documented/non-internal machine constraints. gcc/ChangeLog: PR target/101275 * config/riscv/constraints.md ("S"): Update description and remove @internal. * doc/md.texi (Machine Constraints): Document the 'S' constraints for RISC-V. Diff: --- gcc/config/riscv/constraints.md | 3 +-- gcc/doc/md.texi | 3 +++ 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/gcc/config/riscv/constraints.md b/gcc/config/riscv/constraints.md index 8c15c6c0486..c87d5b796a5 100644 --- a/gcc/config/riscv/constraints.md +++ b/gcc/config/riscv/constraints.md @@ -67,8 +67,7 @@ (match_test "GET_CODE(XEXP(op,0)) == REG"))) (define_constraint "S" - "@internal - A constant call address." + "A constraint that matches an absolute symbolic address." (match_operand 0 "absolute_symbolic_operand")) (define_constraint "U" diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index 0fe70b7ea40..8225a768a5c 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -3536,6 +3536,9 @@ A 5-bit unsigned immediate for CSR access instructions. @item A An address that is held in a general-purpose register. +@item S +A constraint that matches an absolute symbolic address. + @end table @item RX---@file{config/rx/constraints.md}