From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35704) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cR8VI-0006gR-5c for qemu-devel@nongnu.org; Tue, 10 Jan 2017 21:19:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cR8VH-0003YI-Dx for qemu-devel@nongnu.org; Tue, 10 Jan 2017 21:19:08 -0500 Received: from mail-pf0-x242.google.com ([2607:f8b0:400e:c00::242]:35097) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cR8VH-0003X8-8j for qemu-devel@nongnu.org; Tue, 10 Jan 2017 21:19:07 -0500 Received: by mail-pf0-x242.google.com with SMTP id f144so12526548pfa.2 for ; Tue, 10 Jan 2017 18:19:07 -0800 (PST) Sender: Richard Henderson From: Richard Henderson Date: Tue, 10 Jan 2017 18:18:08 -0800 Message-Id: <20170111021820.24416-54-rth@twiddle.net> In-Reply-To: <20170111021820.24416-1-rth@twiddle.net> References: <20170111021820.24416-1-rth@twiddle.net> Subject: [Qemu-devel] [PULL 53/65] target-xtensa: Use clrsb helper List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org 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; -- 2.9.3