From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43684) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gP4x2-0001i0-Az for qemu-devel@nongnu.org; Tue, 20 Nov 2018 07:16:21 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gP4x0-00050t-Je for qemu-devel@nongnu.org; Tue, 20 Nov 2018 07:16:20 -0500 Received: from mail-pf1-x429.google.com ([2607:f8b0:4864:20::429]:42377) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gP4x0-00050h-EO for qemu-devel@nongnu.org; Tue, 20 Nov 2018 07:16:18 -0500 Received: by mail-pf1-x429.google.com with SMTP id 64so911817pfr.9 for ; Tue, 20 Nov 2018 04:16:18 -0800 (PST) From: Richard Henderson Date: Tue, 20 Nov 2018 13:15:55 +0100 Message-Id: <20181120121558.7660-3-richard.henderson@linaro.org> In-Reply-To: <20181120121558.7660-1-richard.henderson@linaro.org> References: <20181120121558.7660-1-richard.henderson@linaro.org> Subject: [Qemu-devel] [PATCH 2/5] tcg/optimize: Optimize bswap List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Alistair.Francis@wdc.com Somehow we forgot these operations, once upon a time. This will allow immediate stores to have their bswap optimized away. Signed-off-by: Richard Henderson --- tcg/optimize.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tcg/optimize.c b/tcg/optimize.c index 5dbe11c3c8..6b98ec13e6 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -353,6 +353,15 @@ static TCGArg do_constant_folding_2(TCGOpcode op, TCGArg x, TCGArg y) CASE_OP_32_64(ext16u): return (uint16_t)x; + CASE_OP_32_64(bswap16): + return bswap16(x); + + CASE_OP_32_64(bswap32): + return bswap32(x); + + case INDEX_op_bswap64_i64: + return bswap64(x); + case INDEX_op_ext_i32_i64: case INDEX_op_ext32s_i64: return (int32_t)x; @@ -1105,6 +1114,9 @@ void tcg_optimize(TCGContext *s) CASE_OP_32_64(ext16s): CASE_OP_32_64(ext16u): CASE_OP_32_64(ctpop): + CASE_OP_32_64(bswap16): + CASE_OP_32_64(bswap32): + case INDEX_op_bswap64_i64: case INDEX_op_ext32s_i64: case INDEX_op_ext32u_i64: case INDEX_op_ext_i32_i64: -- 2.17.2