From f721171632d67f397e712db52b9ce36bb46fdd96 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 20 Apr 2020 08:14:48 -0300 Subject: [PATCH] Revert "x86_64: Add SSE sfp-exceptions" The __sfp_handle_exceptions is not fully correct regarding raising exceptions, since there is no direct way to raise only FP_EX_OVERFLOW nor FP_EX_UNDERFLOW for SSE mode. Both libgcc and feraiseexcept rely on x87 mode to accomplish it. This reverts commit 460ee50de054396cc9791ff4cfdc2f5029fb923d. Checked on x86_64. --- sysdeps/x86/fpu/sfp-exceptions.c | 57 -------------------------------- sysdeps/x86_64/fpu/Makefile | 4 +-- 2 files changed, 1 insertion(+), 60 deletions(-) delete mode 100644 sysdeps/x86/fpu/sfp-exceptions.c diff --git a/sysdeps/x86/fpu/sfp-exceptions.c b/sysdeps/x86/fpu/sfp-exceptions.c deleted file mode 100644 index 74ce0716e2..0000000000 --- a/sysdeps/x86/fpu/sfp-exceptions.c +++ /dev/null @@ -1,57 +0,0 @@ -/* x86_64 soft-fp exception handling for _Float128. - Copyright (C) 2020 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include - -void -__sfp_handle_exceptions (int _fex) -{ - if (_fex & FP_EX_INVALID) - { - float f = 0.0f; - math_force_eval (f / f); - } - if (_fex & FP_EX_DENORM) - { - float f = FLT_MIN, g = 2.0f; - math_force_eval (f / g); - } - if (_fex & FP_EX_DIVZERO) - { - float f = 1.0f, g = 0.0f; - math_force_eval (f / g); - } - if (_fex & FP_EX_OVERFLOW) - { - float force_underflow = FLT_MAX * FLT_MAX; - math_force_eval (force_underflow); - } - if (_fex & FP_EX_UNDERFLOW) - { - float force_overflow = FLT_MIN * FLT_MIN; - math_force_eval (force_overflow); - } - if (_fex & FP_EX_INEXACT) - { - float f = 1.0f, g = 3.0f; - math_force_eval (f / g); - } -} diff --git a/sysdeps/x86_64/fpu/Makefile b/sysdeps/x86_64/fpu/Makefile index a95e3f74f4..a4ff2723a8 100644 --- a/sysdeps/x86_64/fpu/Makefile +++ b/sysdeps/x86_64/fpu/Makefile @@ -23,10 +23,8 @@ libmvec-support += svml_d_cos2_core svml_d_cos4_core_avx \ svml_s_sincosf8_core svml_s_sincosf16_core endif -ifeq ($(subdir),math) -libm-routines += sfp-exceptions - # Variables for libmvec tests. +ifeq ($(subdir),math) ifeq ($(build-mathvec),yes) libmvec-tests += double-vlen2 double-vlen4 double-vlen4-avx2 \ float-vlen4 float-vlen8 float-vlen8-avx2 -- 2.43.5