From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1005) id 385563858D1E; Wed, 25 Jan 2023 03:00:56 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 385563858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1674615656; bh=pRzPFy+w7EC1KvUqY1zc9xEwhdH8jSje5/uNm9TnRgM=; h=From:To:Subject:Date:From; b=DrjnCEygoAsNu59QLSKJ/czXwwArTrRF9zQ0EzjqeHYQhWB2Gx+yIura6re2T81L+ 9lQIZVZFq3ct/nP/wby2wozmuAYGs28BMeWJ/oYxTFE5MpScDpxtYcF88fzlhyazFS HOXyzGaWcHXY+XeGXu59l1b1L7WXdmsW54LecW4A= 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/work107)] Update ChangeLog.meissner X-Act-Checkin: gcc X-Git-Author: Michael Meissner X-Git-Refname: refs/users/meissner/heads/work107 X-Git-Oldrev: 2addd92c25c5b5cc9f223a9cb377ccc6aae52c99 X-Git-Newrev: 7a745792382b35c9efcd07a2baf53938235c4c30 Message-Id: <20230125030056.385563858D1E@sourceware.org> Date: Wed, 25 Jan 2023 03:00:56 +0000 (GMT) List-Id: https://gcc.gnu.org/g:7a745792382b35c9efcd07a2baf53938235c4c30 commit 7a745792382b35c9efcd07a2baf53938235c4c30 Author: Michael Meissner Date: Tue Jan 24 22:00:53 2023 -0500 Update ChangeLog.meissner Diff: --- gcc/ChangeLog.meissner | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner index 2479292e9e8..182a2e87e0d 100644 --- a/gcc/ChangeLog.meissner +++ b/gcc/ChangeLog.meissner @@ -1,3 +1,34 @@ +==================== work107, patch #20 ==================== + +Improve PowerPC 128-bit floating point types. + +This patch prevents __ibm128 and __float128 from being considered in the +automatic widening that the compiler does. This way, you don't have the +possibility that IFmode (__ibm128) will be widened to TFmode or KFmode, even +there is hardware to support the IEEE 128-bit operations. + +I also moved changing the TFmode format from ieee to ibm to rs6000-modes.def +from rs6000.cc. + +2022-01-24 Michael Meissner + +gcc/ + + * config/rs6000/rs6000-modes.def (IFmode): Rework to use + FRACTIONAL_FLOAT_MODE_NO_WIDEN. + (KFmode): Likewise. + * expr.cc (convert_mode_scalar): Don't abort if we are converting + floating point modes that are the same precision but use different + encodings. + * genmodes.cc (struct mode_data): Add support for no widening. + (blank_mode): Likewise. + (FRACTIONAL_FLOAT_MODE): Add support for no widening capability. + (FRACTIONAL_FLOAT_MODE_NO_WIDEN): New macro. + (make_float_mode): Add support for no widening capability. + (cmp_modes): Likewise. + (emit_mode_wider): Add support for no widening capability. + * machmode.def (FRACTIONAL_FLOAT_MODE_NO_WIDEN): Document. + ==================== work107, rebase 1/23 ==================== ==================== work107, patch #2 ====================