From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 7924) id A9C7D3858C2D; Fri, 16 Jun 2023 23:29:56 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A9C7D3858C2D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1686958196; bh=KwdRLiOkyTCRWBFnhqZUbM6UhS8WmOKiYI8VNdcVFzw=; h=From:To:Subject:Date:From; b=bBo+ZEnDMp3b21v3bIj93klbeK68FJilc31/HvEGPxUazehfXAuFRQ31Cx6eGneWe H9BOphErBm5DamdyrhpMjcigHQperSZ3ZNx99O7IvLT1qmI74FhckU7PnUgNxRB7oJ ZQjtkbH47NF5kZMqN8ZJ+PB9NROsUsu8r7jrvvQE= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Pan Li To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-1898] RISC-V: Fix VL operand bug in VSETVL PASS[PR110264] X-Act-Checkin: gcc X-Git-Author: Juzhe-Zhong X-Git-Refname: refs/heads/master X-Git-Oldrev: bc6bd0d608da1609c1caeb04ab795a83720add55 X-Git-Newrev: dd6e1cbac8682106c5167c105f2807014288b852 Message-Id: <20230616232956.A9C7D3858C2D@sourceware.org> Date: Fri, 16 Jun 2023 23:29:56 +0000 (GMT) List-Id: https://gcc.gnu.org/g:dd6e1cbac8682106c5167c105f2807014288b852 commit r14-1898-gdd6e1cbac8682106c5167c105f2807014288b852 Author: Juzhe-Zhong Date: Fri Jun 16 16:02:31 2023 +0800 RISC-V: Fix VL operand bug in VSETVL PASS[PR110264] This patch fixes this issue happens on both GCC-13 and GCC-14. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110264 The testcase is too big and I failed to reduce it so I didn't append test into this patch. This patch should not only land into GCC-14 but also should backport to GCC-13. PR target/110264 gcc/ChangeLog: * config/riscv/riscv-vsetvl.cc (insert_vsetvl): Fix bug. Diff: --- gcc/config/riscv/riscv-vsetvl.cc | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/gcc/config/riscv/riscv-vsetvl.cc b/gcc/config/riscv/riscv-vsetvl.cc index 7066dea3d14..971c3f90742 100644 --- a/gcc/config/riscv/riscv-vsetvl.cc +++ b/gcc/config/riscv/riscv-vsetvl.cc @@ -744,7 +744,10 @@ insert_vsetvl (enum emit_type emit_type, rtx_insn *rinsn, if (vlmax_avl_p (info.get_avl ())) { gcc_assert (has_vtype_op (rinsn) || vsetvl_insn_p (rinsn)); - rtx vl_op = info.get_avl_reg_rtx (); + /* For user vsetvli a5, zero, we should use get_vl to get the VL + operand "a5". */ + rtx vl_op + = vsetvl_insn_p (rinsn) ? get_vl (rinsn) : info.get_avl_reg_rtx (); gcc_assert (!vlmax_avl_p (vl_op)); emit_vsetvl_insn (VSETVL_NORMAL, emit_type, info, vl_op, rinsn); return VSETVL_NORMAL;