Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 224 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S b/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S
new file mode 100644
index 0000000000..c690150964
--- /dev/null
+++ b/REORG.TODO/sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S
@@ -0,0 +1,224 @@
+/* Function sinf vectorized with SSE4.
+   Copyright (C) 2014-2017 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
+   <http://www.gnu.org/licenses/>.  */
+
+
+#include <sysdep.h>
+#include "svml_s_trig_data.h"
+
+	.text
+ENTRY(_ZGVbN4v_sinf_sse4)
+/*
+   ALGORITHM DESCRIPTION:
+
+   1) Range reduction to [-Pi/2; +Pi/2] interval
+      a) Grab sign from source argument and save it.
+      b) Remove sign using AND operation
+      c) Getting octant Y by 1/Pi multiplication
+      d) Add "Right Shifter" value
+      e) Treat obtained value as integer for destination sign setting.
+         Shift first bit of this value to the last (sign) position
+      f) Change destination sign if source sign is negative
+         using XOR operation.
+      g) Subtract "Right Shifter" value
+      h) Subtract Y*PI from X argument, where PI divided to 4 parts:
+         X = X - Y*PI1 - Y*PI2 - Y*PI3 - Y*PI4;
+   2) Polynomial (minimax for sin within [-Pi/2; +Pi/2] interval)
+      a) Calculate X^2 = X * X
+      b) Calculate polynomial:
+         R = X + X * X^2 * (A3 + x^2 * (A5 + ......
+   3) Destination sign setting
+      a) Set shifted destination sign using XOR operation:
+         R = XOR( R, S );
+ */
+        pushq     %rbp
+        cfi_adjust_cfa_offset (8)
+        cfi_rel_offset (%rbp, 0)
+        movq      %rsp, %rbp
+        cfi_def_cfa_register (%rbp)
+        andq      $-64, %rsp
+        subq      $320, %rsp
+        movaps    %xmm0, %xmm5
+        movq      __svml_s_trig_data@GOTPCREL(%rip), %rax
+        movups    __sAbsMask(%rax), %xmm2
+
+/* b) Remove sign using AND operation */
+        movaps    %xmm2, %xmm4
+
+/*
+  f) Change destination sign if source sign is negative
+  using XOR operation.
+ */
+        andnps    %xmm5, %xmm2
+        movups    __sInvPI(%rax), %xmm1
+        andps     %xmm5, %xmm4
+
+/* c) Getting octant Y by 1/Pi multiplication
+   d) Add "Right Shifter" value  */
+        mulps     %xmm4, %xmm1
+
+/* h) Subtract Y*PI from X argument, where PI divided to 4 parts:
+   X = X - Y*PI1 - Y*PI2 - Y*PI3 - Y*PI4  */
+        movaps    %xmm4, %xmm0
+
+/* Check for large and special values */
+        cmpnleps  __sRangeReductionVal(%rax), %xmm4
+        movups    __sRShifter(%rax), %xmm6
+        movups    __sPI1(%rax), %xmm7
+        addps     %xmm6, %xmm1
+        movmskps  %xmm4, %ecx
+
+/* e) Treat obtained value as integer for destination sign setting.
+   Shift first bit of this value to the last (sign) position  */
+        movaps    %xmm1, %xmm3
+
+/* g) Subtract "Right Shifter" value */
+        subps     %xmm6, %xmm1
+        mulps     %xmm1, %xmm7
+        pslld     $31, %xmm3
+        movups    __sPI2(%rax), %xmm6
+        subps     %xmm7, %xmm0
+        mulps     %xmm1, %xmm6
+        movups    __sPI3(%rax), %xmm7
+        subps     %xmm6, %xmm0
+        mulps     %xmm1, %xmm7
+        movups    __sPI4(%rax), %xmm6
+        subps     %xmm7, %xmm0
+        mulps     %xmm6, %xmm1
+        subps     %xmm1, %xmm0
+
+/* 2) Polynomial (minimax for sin within [-Pi/2; +Pi/2] interval)
+   a) Calculate X^2 = X * X
+   b) Calculate polynomial:
+   R = X + X * X^2 * (A3 + x^2 * (A5 + ...... */
+        movaps    %xmm0, %xmm1
+        mulps     %xmm0, %xmm1
+        xorps     %xmm3, %xmm0
+        movups    __sA9(%rax), %xmm3
+        mulps     %xmm1, %xmm3
+        addps     __sA7(%rax), %xmm3
+        mulps     %xmm1, %xmm3
+        addps     __sA5(%rax), %xmm3
+        mulps     %xmm1, %xmm3
+        addps     __sA3(%rax), %xmm3
+        mulps     %xmm3, %xmm1
+        mulps     %xmm0, %xmm1
+        addps     %xmm1, %xmm0
+
+/* 3) Destination sign setting
+   a) Set shifted destination sign using XOR operation:
+   R = XOR( R, S ); */
+        xorps     %xmm2, %xmm0
+        testl     %ecx, %ecx
+        jne       .LBL_1_3
+
+.LBL_1_2:
+        cfi_remember_state
+        movq      %rbp, %rsp
+        cfi_def_cfa_register (%rsp)
+        popq      %rbp
+        cfi_adjust_cfa_offset (-8)
+        cfi_restore (%rbp)
+        ret
+
+.LBL_1_3:
+        cfi_restore_state
+        movups    %xmm5, 192(%rsp)
+        movups    %xmm0, 256(%rsp)
+        je        .LBL_1_2
+
+        xorb      %dl, %dl
+        xorl      %eax, %eax
+        movups    %xmm8, 112(%rsp)
+        movups    %xmm9, 96(%rsp)
+        movups    %xmm10, 80(%rsp)
+        movups    %xmm11, 64(%rsp)
+        movups    %xmm12, 48(%rsp)
+        movups    %xmm13, 32(%rsp)
+        movups    %xmm14, 16(%rsp)
+        movups    %xmm15, (%rsp)
+        movq      %rsi, 136(%rsp)
+        movq      %rdi, 128(%rsp)
+        movq      %r12, 168(%rsp)
+        cfi_offset_rel_rsp (12, 168)
+        movb      %dl, %r12b
+        movq      %r13, 160(%rsp)
+        cfi_offset_rel_rsp (13, 160)
+        movl      %ecx, %r13d
+        movq      %r14, 152(%rsp)
+        cfi_offset_rel_rsp (14, 152)
+        movl      %eax, %r14d
+        movq      %r15, 144(%rsp)
+        cfi_offset_rel_rsp (15, 144)
+        cfi_remember_state
+
+.LBL_1_6:
+        btl       %r14d, %r13d
+        jc        .LBL_1_12
+
+.LBL_1_7:
+        lea       1(%r14), %esi
+        btl       %esi, %r13d
+        jc        .LBL_1_10
+
+.LBL_1_8:
+        incb      %r12b
+        addl      $2, %r14d
+        cmpb      $16, %r12b
+        jb        .LBL_1_6
+
+        movups    112(%rsp), %xmm8
+        movups    96(%rsp), %xmm9
+        movups    80(%rsp), %xmm10
+        movups    64(%rsp), %xmm11
+        movups    48(%rsp), %xmm12
+        movups    32(%rsp), %xmm13
+        movups    16(%rsp), %xmm14
+        movups    (%rsp), %xmm15
+        movq      136(%rsp), %rsi
+        movq      128(%rsp), %rdi
+        movq      168(%rsp), %r12
+        cfi_restore (%r12)
+        movq      160(%rsp), %r13
+        cfi_restore (%r13)
+        movq      152(%rsp), %r14
+        cfi_restore (%r14)
+        movq      144(%rsp), %r15
+        cfi_restore (%r15)
+        movups    256(%rsp), %xmm0
+        jmp       .LBL_1_2
+
+.LBL_1_10:
+        cfi_restore_state
+        movzbl    %r12b, %r15d
+        movss     196(%rsp,%r15,8), %xmm0
+
+        call      JUMPTARGET(sinf)
+
+        movss     %xmm0, 260(%rsp,%r15,8)
+        jmp       .LBL_1_8
+
+.LBL_1_12:
+        movzbl    %r12b, %r15d
+        movss     192(%rsp,%r15,8), %xmm0
+
+        call      JUMPTARGET(sinf)
+
+        movss     %xmm0, 256(%rsp,%r15,8)
+        jmp       .LBL_1_7
+
+END(_ZGVbN4v_sinf_sse4)