From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55523) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cKdWE-0006q4-00 for qemu-devel@nongnu.org; Fri, 23 Dec 2016 23:01:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cKdWD-0005oR-8r for qemu-devel@nongnu.org; Fri, 23 Dec 2016 23:01:14 -0500 Received: from mail-pg0-x243.google.com ([2607:f8b0:400e:c05::243]:33298) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cKdWD-0005o5-3q for qemu-devel@nongnu.org; Fri, 23 Dec 2016 23:01:13 -0500 Received: by mail-pg0-x243.google.com with SMTP id g1so2479604pgn.0 for ; Fri, 23 Dec 2016 20:01:12 -0800 (PST) Received: from bigtime.domain ([2602:47:d954:1500:5e51:4fff:fe40:9c64]) by smtp.gmail.com with ESMTPSA id n25sm65339316pfi.33.2016.12.23.20.01.11 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 23 Dec 2016 20:01:11 -0800 (PST) Sender: Richard Henderson From: Richard Henderson Date: Fri, 23 Dec 2016 20:00:10 -0800 Message-Id: <20161224040042.12654-34-rth@twiddle.net> In-Reply-To: <20161224040042.12654-1-rth@twiddle.net> References: <20161224040042.12654-1-rth@twiddle.net> Subject: [Qemu-devel] [PATCH 33/65] target-s390x: Use clz opcode List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Signed-off-by: Richard Henderson --- target/s390x/helper.h | 1 - target/s390x/int_helper.c | 6 ------ target/s390x/translate.c | 2 +- 3 files changed, 1 insertion(+), 8 deletions(-) diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 207a6e7..9102071 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -70,7 +70,6 @@ DEF_HELPER_FLAGS_4(msdb, TCG_CALL_NO_WG, i64, env, i64, i64, i64) DEF_HELPER_FLAGS_3(tceb, TCG_CALL_NO_RWG_SE, i32, env, i64, i64) DEF_HELPER_FLAGS_3(tcdb, TCG_CALL_NO_RWG_SE, i32, env, i64, i64) DEF_HELPER_FLAGS_4(tcxb, TCG_CALL_NO_RWG_SE, i32, env, i64, i64, i64) -DEF_HELPER_FLAGS_1(clz, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_2(sqeb, TCG_CALL_NO_WG, i64, env, i64) DEF_HELPER_FLAGS_2(sqdb, TCG_CALL_NO_WG, i64, env, i64) DEF_HELPER_FLAGS_3(sqxb, TCG_CALL_NO_WG, i64, env, i64, i64) diff --git a/target/s390x/int_helper.c b/target/s390x/int_helper.c index 370c94d..5bc470b 100644 --- a/target/s390x/int_helper.c +++ b/target/s390x/int_helper.c @@ -117,12 +117,6 @@ uint64_t HELPER(divu64)(CPUS390XState *env, uint64_t ah, uint64_t al, return ret; } -/* count leading zeros, for find leftmost one */ -uint64_t HELPER(clz)(uint64_t v) -{ - return clz64(v); -} - uint64_t HELPER(cvd)(int32_t reg) { /* positive 0 */ diff --git a/target/s390x/translate.c b/target/s390x/translate.c index 6cebb7e..01c6217 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -2249,7 +2249,7 @@ static ExitStatus op_flogr(DisasContext *s, DisasOps *o) gen_op_update1_cc_i64(s, CC_OP_FLOGR, o->in2); /* R1 = IN ? CLZ(IN) : 64. */ - gen_helper_clz(o->out, o->in2); + tcg_gen_clzi_i64(o->out, o->in2, 64); /* R1+1 = IN & ~(found bit). Note that we may attempt to shift this value by 64, which is undefined. But since the shift is 64 iff the -- 2.9.3