From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:37064) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QMN8H-0003WW-Iw for qemu-devel@nongnu.org; Tue, 17 May 2011 12:28:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QMN8E-0004Ye-PP for qemu-devel@nongnu.org; Tue, 17 May 2011 12:28:29 -0400 Received: from hall.aurel32.net ([88.191.126.93]:51066) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QMN8E-0004YO-Hp for qemu-devel@nongnu.org; Tue, 17 May 2011 12:28:26 -0400 From: Aurelien Jarno Date: Tue, 17 May 2011 18:28:19 +0200 Message-Id: <1305649700-9078-3-git-send-email-aurelien@aurel32.net> In-Reply-To: <1305649700-9078-1-git-send-email-aurelien@aurel32.net> References: <1305649700-9078-1-git-send-email-aurelien@aurel32.net> Subject: [Qemu-devel] [PATCH 2/3] tcg: mark dead output argument in op_dead_args List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Aurelien Jarno If an op is not removed and has dead output arguments, mark it in op_dead_args similarly to what is done for input arguments. Signed-off-by: Aurelien Jarno --- tcg/tcg.c | 10 ++++++++-- 1 files changed, 8 insertions(+), 2 deletions(-) diff --git a/tcg/tcg.c b/tcg/tcg.c index 9a48cb9..82d3e1d 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1245,8 +1245,12 @@ static void tcg_liveness_analysis(TCGContext *s) do_not_remove_call: /* output args are dead */ + dead_args = 0; for(i = 0; i < nb_oargs; i++) { arg = args[i]; + if (dead_temps[arg]) { + dead_args |= (1 << i); + } dead_temps[arg] = 1; } @@ -1256,7 +1260,6 @@ static void tcg_liveness_analysis(TCGContext *s) } /* input args are live */ - dead_args = 0; for(i = nb_oargs; i < nb_iargs + nb_oargs; i++) { arg = args[i]; if (arg != TCG_CALL_DUMMY_ARG) { @@ -1313,8 +1316,12 @@ static void tcg_liveness_analysis(TCGContext *s) do_not_remove: /* output args are dead */ + dead_args = 0; for(i = 0; i < nb_oargs; i++) { arg = args[i]; + if (dead_temps[arg]) { + dead_args |= (1 << i); + } dead_temps[arg] = 1; } @@ -1327,7 +1334,6 @@ static void tcg_liveness_analysis(TCGContext *s) } /* input args are live */ - dead_args = 0; for(i = nb_oargs; i < nb_oargs + nb_iargs; i++) { arg = args[i]; if (dead_temps[arg]) { -- 1.7.2.3