From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1005) id 608A73858402; Tue, 14 Sep 2021 14:29:54 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 608A73858402 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Michael Meissner To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/meissner/heads/work068)] Avoid NaN and denormal values in XXSPLTIDP. X-Act-Checkin: gcc X-Git-Author: Michael Meissner X-Git-Refname: refs/users/meissner/heads/work068 X-Git-Oldrev: e8cfc2d64d94e68ceec0fe111451e6d28f2d7513 X-Git-Newrev: 39dfb439be18b0b820f02dbe2c51999721ff58fc Message-Id: <20210914142954.608A73858402@sourceware.org> Date: Tue, 14 Sep 2021 14:29:54 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Sep 2021 14:29:54 -0000 https://gcc.gnu.org/g:39dfb439be18b0b820f02dbe2c51999721ff58fc commit 39dfb439be18b0b820f02dbe2c51999721ff58fc Author: Michael Meissner Date: Tue Sep 14 10:29:25 2021 -0400 Avoid NaN and denormal values in XXSPLTIDP. 2021-09-14 Michael Meissner gcc/ * config/rs6000/predicates.md (easy_fp_constant_float_to_v2df): Avoid integer values that look like NaN or denormal values in XXSPLTIDP. Diff: --- gcc/config/rs6000/predicates.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/gcc/config/rs6000/predicates.md b/gcc/config/rs6000/predicates.md index c8f7d975b7c..635a08ec8d6 100644 --- a/gcc/config/rs6000/predicates.md +++ b/gcc/config/rs6000/predicates.md @@ -666,6 +666,11 @@ HOST_WIDE_INT df_value = INTVAL (element); long df_words[2]; + /* Stay away from NaNs and denormal values. */ + int exponent = (df_value >> 52) & 0x7ff; + if (exponent == 0 || exponent == 0x7ff) + return false; + df_words[0] = (df_value >> 32) & 0xffffffff; df_words[1] = df_value & 0xffffffff;