From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45746) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c75qm-0004Pj-4L for qemu-devel@nongnu.org; Wed, 16 Nov 2016 14:26:29 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c75ql-00063z-7O for qemu-devel@nongnu.org; Wed, 16 Nov 2016 14:26:28 -0500 Received: from mail-wm0-x242.google.com ([2a00:1450:400c:c09::242]:32812) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1c75ql-00063p-1L for qemu-devel@nongnu.org; Wed, 16 Nov 2016 14:26:27 -0500 Received: by mail-wm0-x242.google.com with SMTP id u144so14305304wmu.0 for ; Wed, 16 Nov 2016 11:26:26 -0800 (PST) Sender: Richard Henderson From: Richard Henderson Date: Wed, 16 Nov 2016 20:25:35 +0100 Message-Id: <1479324335-2074-26-git-send-email-rth@twiddle.net> In-Reply-To: <1479324335-2074-1-git-send-email-rth@twiddle.net> References: <1479324335-2074-1-git-send-email-rth@twiddle.net> Subject: [Qemu-devel] [PATCH 25/25] target-xtensa: Use clrsb helper List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Max Filippov Cc: Max Filippov Signed-off-by: Richard Henderson --- target-xtensa/translate.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index 5c719a4..5a93705 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -1372,16 +1372,7 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) case 14: /*NSAu*/ HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA); if (gen_window_check2(dc, RRR_S, RRR_T)) { - TCGv_i32 t0 = tcg_temp_new_i32(); - - /* if (v & 0x80000000) v = ~v; */ - tcg_gen_sari_i32(t0, cpu_R[RRR_S], 31); - tcg_gen_xor_i32(t0, t0, cpu_R[RRR_S]); - - /* r = (v ? clz(v) : 32) - 1; */ - tcg_gen_clzi_i32(t0, t0, 32); - tcg_gen_subi_i32(cpu_R[RRR_T], t0, 1); - tcg_temp_free_i32(t0); + tcg_gen_clrsb_i32(cpu_R[RRR_T], cpu_R[RRR_S]); } break; -- 2.7.4