From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 7923) id F15403858410; Tue, 2 May 2023 20:10:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F15403858410 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1683058218; bh=wnF3vrIbOCwwCEgHCT7GN/1SynVPnouFOfaGzm/sEZU=; h=From:To:Subject:Date:From; b=c8be/bVqj2nDiGJXVifzzxhTg/3VOtGMtorsp8LLruuDYmQTmn4K4vmBBA99Kp5uB T9U+ONxVCWc6QEI/1qqy+5gsSOD2UQrUOQoIoIGoTzaL+/6dP8cMJFoGTFjZl0JcfV BLKwg+eC/k1L72JneGJ0Qrk/K4MAEhtheC4N+uZ4= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Patrick O'Neill To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-400] RISC-V: Enforce subword atomic LR/SC SEQ_CST X-Act-Checkin: gcc X-Git-Author: Patrick O'Neill X-Git-Refname: refs/heads/master X-Git-Oldrev: dcd7b2f5f7233a04c8b14b362d0befa76e9654c0 X-Git-Newrev: 4990cf84c460f064d6281d0813f20b0ef20c7448 Message-Id: <20230502201018.F15403858410@sourceware.org> Date: Tue, 2 May 2023 20:10:18 +0000 (GMT) List-Id: https://gcc.gnu.org/g:4990cf84c460f064d6281d0813f20b0ef20c7448 commit r14-400-g4990cf84c460f064d6281d0813f20b0ef20c7448 Author: Patrick O'Neill Date: Fri Apr 21 13:11:35 2023 -0700 RISC-V: Enforce subword atomic LR/SC SEQ_CST Replace LR.aq/SC.rl pairs with the SEQ_CST LR.aqrl/SC.rl pairs recommended by table A.6 of the ISA manual. 2023-04-27 Patrick O'Neill gcc/ChangeLog: * config/riscv/sync.md: Change LR.aq/SC.rl pairs into sequentially consistent LR.aqrl/SC.rl pairs. Signed-off-by: Patrick O'Neill Diff: --- gcc/config/riscv/sync.md | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/gcc/config/riscv/sync.md b/gcc/config/riscv/sync.md index 19274528262..0c83ef04607 100644 --- a/gcc/config/riscv/sync.md +++ b/gcc/config/riscv/sync.md @@ -109,7 +109,7 @@ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" { return "1:\;" - "lr.w.aq\t%0, %1\;" + "lr.w.aqrl\t%0, %1\;" "\t%5, %0, %2\;" "and\t%5, %5, %3\;" "and\t%6, %0, %4\;" @@ -173,7 +173,7 @@ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" { return "1:\;" - "lr.w.aq\t%0, %1\;" + "lr.w.aqrl\t%0, %1\;" "and\t%5, %0, %2\;" "not\t%5, %5\;" "and\t%5, %5, %3\;" @@ -278,7 +278,7 @@ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" { return "1:\;" - "lr.w.aq\t%0, %1\;" + "lr.w.aqrl\t%0, %1\;" "and\t%4, %0, %3\;" "or\t%4, %4, %2\;" "sc.w.rl\t%4, %4, %1\;" @@ -443,7 +443,7 @@ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" { return "1:\;" - "lr.w.aq\t%0, %1\;" + "lr.w.aqrl\t%0, %1\;" "and\t%6, %0, %4\;" "bne\t%6, %z2, 1f\;" "and\t%6, %0, %5\;"