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, 581 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/ia64/fpu/s_tanhf.S b/REORG.TODO/sysdeps/ia64/fpu/s_tanhf.S
new file mode 100644
index 0000000000..4749477b40
--- /dev/null
+++ b/REORG.TODO/sysdeps/ia64/fpu/s_tanhf.S
@@ -0,0 +1,581 @@
+.file "tanhf.s"
+
+
+// Copyright (c) 2001 - 2005, Intel Corporation
+// All rights reserved.
+//
+// Contributed 2001 by the Intel Numerics Group, Intel Corporation
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// * The name of Intel Corporation may not be used to endorse or promote
+// products derived from this software without specific prior written
+// permission.
+
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Intel Corporation is the author of this code, and requests that all
+// problem reports or change requests be submitted to it directly at
+// http://www.intel.com/software/products/opensource/libraries/num.htm.
+//
+// History
+//==============================================================
+// 05/30/01 Initial version
+// 05/20/02 Cleaned up namespace and sf0 syntax
+// 02/10/03 Reordered header: .section, .global, .proc, .align
+// 03/31/05 Reformatted delimiters between data tables
+//
+// API
+//==============================================================
+// float tanhf(float)
+//
+// Overview of operation
+//==============================================================
+// Background
+//
+//
+// There are 9 paths:
+// 1. x = +/-0.0
+//    Return tanhf(x) = +/-0.0
+//
+// 2. 0.0 < |x| < 0.3125
+//    Return tanhf(x) = x + x^3*Pol3(x^2),
+//    where Pol3(x^2) = C3*x^6 + C2*x^4 + C1*x^2 + C0
+//
+// 3. 0.3125 <= |x| < 8.0
+//    Return tanhf(x) = sign(x)*PolD(x)*PolC(|x|) + sign(x)*PolA(|x|),
+//    where sign(x)*PolD(x) = sign(x)*(|x|^7 + D2*x^6 + D1*|x|^5 + D0*x^4),
+//          PolC(|x|) = B0*x^4 + C3*|x|^3 + C2*|x|^2 + C1*|x| + C0,
+//          PolA(|x|) = A3|x|^3 + A2*x^2 + A1*|x| + A0
+//
+//    Actually range 0.3125<=|x|< 8.0 is split to 5 subranges.
+//    For each subrange there is particular set of coefficients.
+//    Below is the list of subranges:
+//    3.1 0.3125 <= |x| < 0.5
+//    3.2 0.5 <= |x| < 1.0
+//    3.3 1.0 <= |x| < 2.0
+//    3.4 2.0 <= |x| < 4.0
+//    3.5 4.0 <= |x| < 8.0
+//
+// 4. 8.0 <= |x| < 9.125
+//    Return tanhf(x) = sign(x)*(A3|x|^3 + A2*x^2 + A1*|x| + A0)
+//
+// 5. 9.125 <= |x| < +INF
+//    Return tanhf(x) = sign(x)*(1.0d - 2^(-52))
+//
+// 6. |x| = INF
+//    Return tanhf(x) = sign(x) * 1.0
+//
+// 7. x = [S,Q]NaN
+//    Return tanhf(x) = QNaN
+//
+// 8. x is positive denormal
+//    Return tanhf(x) = x - x^2
+//
+// 9. x is negative denormal
+//    Return tanhf(x) = x + x^2
+//
+// Registers used
+//==============================================================
+// Floating Point registers used:
+// f8, input
+// f32 -> f59
+
+// General registers used:
+// r32 -> r46, r2, r3
+
+// Predicate registers used:
+// p0, p6 -> p15
+
+// p6           to filter out case when x = [Q,S]NaN or +/-0
+// p7           to filter out case when x = denormal
+// p8           set if |x| >= 0.3125, used also to process denormal input
+// p9           to filter out case when |x| = inf
+// p10          to filter out case when |x| < 0.3125
+// p11          to filter out case when 0.3125 <= |x| < 9.125
+// p12          to filter out case when |x| >= 9.125
+// p13          to filter out case when 8.0 <= |x| < 9.125
+// p14          set to 1 for positive x
+// p15          set to 1 for negative x
+
+// Assembly macros
+//==============================================================
+rDataPtr           = r2
+rDataPtr1          = r3
+
+rBias              = r33
+rCoeffAddr3        = r34
+rNearSaturation    = r35
+rCoeffAddr1        = r36
+rCoeffAddr2        = r37
+rOffset2           = r38
+rBias2             = r39
+rMask              = r40
+rArg               = r41
+rBound             = r42
+rSignBit           = r43
+rAbsArg            = r44
+rDataPtr2          = r45
+rSaturation        = r46
+
+//==============================================================
+fA0                = f32
+fA1                = f33
+fA2                = f34
+fA3                = f35
+fC0                = f36
+fC1                = f37
+fC2                = f38
+fC3                = f39
+fD0                = f40
+fD1                = f41
+fD2                = f42
+fB0                = f43
+fArgSqr            = f44
+fAbsArg            = f45
+fSignumX           = f46
+fArg4              = f47
+fArg4Sgn           = f48
+fArg3              = f49
+fArg3Sgn           = f50
+fArg7Sgn           = f51
+fArg6Sgn           = f52
+fPolC              = f53
+fPolCTmp           = f54
+fPolA              = f55
+fPolATmp           = f56
+fPolD              = f57
+fPolDTmp           = f58
+fArgSqrSgn         = f59
+
+// Data tables
+//==============================================================
+
+RODATA
+
+.align 16
+
+LOCAL_OBJECT_START(tanhf_data)
+// Polynomial coefficients for the tanh(x), 0.3125 <= |x| < 0.5
+data8 0x3F9BEEDFDD177D7B // C0
+data8 0x3F970D10C7F32458 // C1
+data8 0x3F766D6B051F3A38 // C2
+data8 0xBF732F2001B23402 // C3
+data8 0xBF854BE1CE1ED499 // D0
+data8 0x4013C944F3999A16 // D1
+data8 0xC01106C6975222C0 // D2
+data8 0x3F783D5ACCF9EBE8 // B0
+// Polynomial coefficients for the tanh(x), 0.5 <= |x| < 1.0
+data8 0xBF5D631440786869 // C0
+data8 0xBF575D79A0D52069 // C1
+data8 0xBF7E2237B7EFC705 // C2
+data8 0x3F6A7ACBC273041F // C3
+data8 0xC040E32EA52D91EB // D0
+data8 0x403D19463E5DB4D7 // D1
+data8 0xC02216F61F759F39 // D2
+data8 0xBF55B4EA0B844BE7 // B0
+// Polynomial coefficients for the tanh(x), 1.0 <= |x| < 2.0
+data8 0x3F8637DBE5B3E690 // C0
+data8 0xBF7F7FEC158C07F5 // C1
+data8 0x3F711C586706838A // C2
+data8 0xBF50EF7EF605554E // C3
+data8 0xC054D45448354E25 // D0
+data8 0x404ADFEEA282E730 // D1
+data8 0xC028AEE456D59549 // D2
+data8 0x3F25232D1BED59A8 // B0
+// Polynomial coefficients for the tanh(x), 2.0 <= |x| < 4.0
+data8 0xBF52602285F2D06C // C0
+data8 0x3F2E57C298FFE1E0 // C1
+data8 0xBF15ED575DB3C811 // C2
+data8 0x3EE428878A08525C // C3
+data8 0xC0895A26849039C1 // D0
+data8 0x406E3C60BBFBB575 // D1
+data8 0xC03A06F62867C75A // D2
+data8 0xBEB114C70F1C723E // B0
+// Polynomial coefficients for the tanh(x), 4.0 <= |x| < 8.0
+data8 0x3EF4B22BD17039A3 // C0
+data8 0xBEB704ADC040C57F // C1
+data8 0x3E937A98288AFE1A // C2
+data8 0xBE4F33B2C9FFE7E7 // C3
+data8 0xC0BE48CFADE2431E // D0
+data8 0x4090E74249760FDD // D1
+data8 0xC04B6F537FCF2F1E // D2
+data8 0x3E0DCD879C91ADEA // B0
+// Polynomial coefficients for the tanh(x), -0.3125 < x < 0.3125
+data8 0xBFD555551E8245B7 // A0
+data8 0x3FC110E63F52E689 // A1
+data8 0xBFAB8CD6A5B7BAFA // A2
+data8 0x3F945D467FCEB553 // A3
+// Polynomial coefficients for the tanh(x), 0.3125 <= |x| < 0.5
+data8 0xBE3DCC92FCAECBB6 // A0
+data8 0x3FF0000043B7D267 // A1
+data8 0xBED18BF28ACFC4B1 // A2
+data8 0xBFD554A56F82837E // A3
+// Polynomial coefficients for the tanh(x), 0.5 <= |x| < 1.0
+data8 0x3EFD6054758539F9 // A0
+data8 0x3FEFFBFC77198EBE // A1
+data8 0x3F700327CA98D237 // A2
+data8 0xBFD68955F5BB2FA1 // A3
+// Polynomial coefficients for the tanh(x), 1.0 <= |x| < 2.0
+data8 0xBF71A53F229DF01B // A0
+data8 0x3FF0AECFD730DE50 // A1
+data8 0xBFC882F88E5DF3BA // A2
+data8 0x3FC6EDF212CA2A8D // A3
+// Polynomial coefficients for the tanh(x), 2.0 <= |x| < 4.0
+data8 0xBFAF0B712E9EDA47 // A0
+data8 0x3FF1C208080BEA64 // A1
+data8 0x3FC3D29B20C8946E // A2
+data8 0xBFF04514ED900A6A // A3
+// Polynomial coefficients for the tanh(x), 4.0 <= |x| < 8.0
+data8 0xBFB1DEA49A831CBC // A0
+data8 0x3FFA729FC7085674 // A1
+data8 0xBFF2F44D923A8FA4 // A2
+data8 0x3FE092FC5712227E // A3
+// Polynomial coefficients for the tanh(x), 8.0 <= |x| <= 9.125
+data8 0x3FEFFF5769EE3041 // A0
+data8 0x3EFBBF148D850891 // A1
+data8 0xBEC86BCEF0F5C2FE // A2
+data8 0x3E7CBA4F3A885A5C // A3
+//
+data8 0x3FEFFFFFFFFFFFFF // 1.0 - epsilon
+LOCAL_OBJECT_END(tanhf_data)
+
+.section .text
+GLOBAL_LIBM_ENTRY(tanhf)
+
+{ .mfi
+      alloc          r32 = ar.pfs, 1, 14, 0, 0
+      fmerge.s       fAbsArg = f1, f8             // |x|
+      addl           rMask = 0x806, r0
+}
+{ .mfi
+      addl           rDataPtr = @ltoff(tanhf_data), gp
+      fma.s1         fArgSqr = f8, f8, f0         // x^2
+      adds           rSignBit = 0x1, r0
+}
+;;
+
+{ .mfi
+      getf.s         rArg = f8                    // x in GR
+      fclass.m       p7,p0 = f8, 0x0b             // is x denormal ?
+      // sign bit and 2 most bits in significand
+      shl            rMask = rMask, 20
+}
+{ .mfi
+      ld8            rDataPtr = [rDataPtr]
+      nop.f          0
+      adds           rBias2 = 0x1F4, r0
+}
+;;
+
+{ .mfi
+      adds           rNearSaturation = 0x14, r0
+      fmerge.s       fSignumX = f8, f1            // signum(x)
+      shl            rSignBit = rSignBit, 31      // mask for sign bit
+}
+{ .mfi
+      adds           rBound = 0x3EA, r0
+      nop.f          0
+      addl           rSaturation = 0x4112, r0
+}
+;;
+
+{ .mfi
+      andcm          rOffset2 = rArg, rMask
+      fclass.m       p6,p0 = f8, 0xc7             // is x [S,Q]NaN or +/-0 ?
+      shl            rBound = rBound, 20          // 1.0f in GR
+}
+{ .mfb
+      andcm          rAbsArg = rArg, rSignBit     // |x| in GR
+      nop.f          0
+(p7)  br.cond.spnt   tanhf_denormal               // branch out if x is denormal
+}
+;;
+
+{ .mfi
+      adds           rCoeffAddr2 = 352, rDataPtr
+      fclass.m       p9,p0 = f8, 0x23            // is x +/- inf?
+      shr            rOffset2 = rOffset2, 21
+}
+{ .mfi
+      cmp.lt         p10, p8 = rAbsArg, rBound   // |x| < 0.3125?
+      nop.f          0
+      adds           rCoeffAddr3 = 16, rDataPtr
+}
+;;
+
+{ .mfi
+(p8)  sub            rBias = rOffset2, rBias2
+      fma.s1         fArg4 = fArgSqr, fArgSqr, f0 // x^4
+      shl            rSaturation = rSaturation, 16
+}
+{ .mfb
+(p10) adds           rBias = 0x14, r0
+(p6)  fma.s.s0       f8 = f8,f1,f8                // NaN or +/-0
+(p6)  br.ret.spnt    b0                           // exit for x = NaN or +/-0
+}
+;;
+
+{ .mfi
+      shladd         rCoeffAddr1 = rBias, 4, rDataPtr
+      fma.s1         fArg3Sgn = fArgSqr, f8, f0  // sign(x)*|x|^3
+      // is |x| < 9.125?
+      cmp.lt         p11, p12 = rAbsArg, rSaturation
+}
+{ .mfi
+      shladd         rCoeffAddr3 = rBias, 4, rCoeffAddr3
+      fma.s1         fArg3 = fArgSqr, fAbsArg, f0 // |x|^3
+      shladd         rCoeffAddr2 = rBias, 3, rCoeffAddr2
+}
+;;
+
+{ .mfi
+(p11) ldfpd          fC0, fC1 = [rCoeffAddr1]
+(p9)  fmerge.s       f8 = f8,f1                   // +/- inf
+(p12) adds           rDataPtr = 544, rDataPtr
+}
+{ .mfb
+(p11) ldfpd          fC2, fC3 = [rCoeffAddr3], 16
+      nop.f          0
+(p9)  br.ret.spnt    b0                           // exit for x = +/- inf
+}
+;;
+
+{ .mfi
+(p11) ldfpd          fA0, fA1 = [rCoeffAddr2], 16
+      nop.f          0
+(p8)  cmp.eq.unc     p13, p0 = rBias, rNearSaturation
+}
+{ .mfi
+      add            rCoeffAddr1 = 48, rCoeffAddr1
+      nop.f          0
+      nop.i          0
+}
+;;
+
+{ .mfi
+(p11) ldfpd          fD0, fD1 = [rCoeffAddr3]
+      nop.f          0
+      nop.i          0
+}
+{ .mfb
+(p11) ldfpd          fD2, fB0 = [rCoeffAddr1]
+      // sign(x)*|x|^2
+      fma.s1         fArgSqrSgn = fArgSqr, fSignumX, f0
+(p10) br.cond.spnt   tanhf_near_zero
+}
+;;
+
+{ .mfi
+(p11) ldfpd          fA2, fA3 = [rCoeffAddr2], 16
+      fcmp.lt.s1     p15, p14 = f8,f0
+      nop.i          0
+}
+{ .mfb
+(p12) ldfd           fA0 = [rDataPtr]
+      fma.s1         fArg4Sgn = fArg4, fSignumX, f0 // sign(x)*|x|^4
+(p12) br.cond.spnt   tanhf_saturation
+}
+;;
+{ .mfi
+      nop.m          0
+      fma.s1         fArg7Sgn = fArg4, fArg3Sgn, f0  // sign(x)*|x|^7
+      nop.i          0
+}
+{ .mfb
+      nop.m          0
+      fma.s1         fArg6Sgn = fArg3, fArg3Sgn, f0  // sign(x)*|x|^6
+(p13) br.cond.spnt   tanhf_close_to_saturation
+}
+;;
+
+{ .mfi
+      nop.m          0
+      fma.s1         fPolC = fC3, fAbsArg, fC2    // C3*|x| + C2
+      nop.i          0
+}
+{ .mfi
+      nop.m          0
+      fma.s1         fPolCTmp = fC1, fAbsArg, fC0 // C1*|x| + C0
+      nop.i          0
+};;
+
+{ .mfi
+      nop.m          0
+      fma.s1         fPolA = fA1, fAbsArg, fA0    // A1*|x| + A0
+      nop.i          0
+}
+;;
+
+{ .mfi
+      nop.m          0
+      fma.s1         fPolD = fD1, fAbsArg, fD0    // D1*|x| + D0
+      nop.i          0
+}
+{ .mfi
+      nop.m          0
+      // sign(x)*(|x|^7 + D2*x^6)
+      fma.s1         fPolDTmp = fArg6Sgn, fD2, fArg7Sgn
+      nop.i          0
+};;
+
+{ .mfi
+      nop.m          0
+      fma.s1         fPolATmp = fA3, fAbsArg, fA2  // A3*|x| + A2
+      nop.i          0
+}
+{ .mfi
+      nop.m          0
+      fma.s1         fB0 = fB0, fArg4, f0          // B0*x^4
+      nop.i          0
+};;
+
+{ .mfi
+      nop.m          0
+      // C3*|x|^3 + C2*x^2 + C1*|x| + C0
+      fma.s1         fPolC = fPolC, fArgSqr, fPolCTmp
+      nop.i          0
+}
+;;
+
+{ .mfi
+      nop.m          0
+      // PolD = sign(x)*(|x|^7 + D2*x^6 + D1*|x|^5 + D0*x^4)
+      fma.d.s1       fPolD = fPolD, fArg4Sgn, fPolDTmp
+      nop.i          0
+}
+;;
+
+{ .mfi
+      nop.m          0
+      // PolA = A3|x|^3 + A2*x^2 + A1*|x| + A0
+      fma.d.s1       fPolA = fPolATmp, fArgSqr, fPolA
+      nop.i          0
+}
+;;
+
+{ .mfi
+      nop.m          0
+      // PolC = B0*x^4 + C3*|x|^3 + C2*|x|^2 + C1*|x| + C0
+      fma.d.s1       fPolC = fPolC, f1, fB0
+      nop.i          0
+}
+;;
+
+{ .mfi
+      nop.m          0
+(p14) fma.s.s0       f8 = fPolC, fPolD, fPolA     // for positive x
+      nop.i          0
+}
+{ .mfb
+      nop.m          0
+(p15) fms.s.s0       f8 = fPolC, fPolD, fPolA     // for negative x
+      br.ret.sptk    b0                           // Exit for 0.3125 <=|x|< 8.0
+};;
+
+
+// Here if |x| < 0.3125
+tanhf_near_zero:
+{ .mfi
+      nop.m          0
+      fma.s1         fPolC = fC3, fArgSqr, fC2    // C3*x^2 + C2
+      nop.i          0
+}
+{ .mfi
+      nop.m          0
+      fma.s1         fPolCTmp = fC1, fArgSqr, fC0  // C1*x^2 + C0
+      nop.i          0
+};;
+
+{ .mfi
+      nop.m          0
+      fma.s1         fPolC = fPolC, fArg4, fPolCTmp // C3*x^6 + C2*x^4 + C1*x^2 + C0
+      nop.i          0
+};;
+
+{ .mfb
+      nop.m          0
+      // x + x^3*(C3*x^6 + C2*x^4 + C1*x^2 + C0)
+      fma.s.s0       f8 = fPolC, fArg3Sgn, f8
+      br.ret.sptk    b0                           // Exit for |x| < 0.3125
+};;
+
+// Here if 9.125 <= |x| < +inf
+tanhf_saturation:
+{ .mfb
+      nop.m          0
+      fma.s.s0       f8 = fA0, fSignumX, f0       // sign(x)*(1.0d - 2^(-52))
+      // Exit for 9.125 <= |x| < +inf
+      br.ret.sptk    b0                           // Exit for 9.125 <=|x|< +inf
+}
+;;
+
+// Here if  8.0 <= |x| < 9.125
+tanhf_close_to_saturation:
+{ .mfi
+      nop.m          0
+      fma.s1         fPolATmp = fA1, fAbsArg, fA0 // A1*|x| + A0
+      nop.i          0
+}
+{ .mfi
+      nop.m          0
+      fma.s1         fPolA = fA3, fAbsArg, fA2    // A3*|x| + A2
+      nop.i          0
+}
+;;
+
+.pred.rel "mutex", p14, p15
+{ .mfi
+      nop.m          0
+      // for positive x
+(p14) fma.s.s0       f8 = fPolA, fArgSqr, fPolATmp
+      nop.i          0
+}
+{ .mfb
+      nop.m          0
+      // for negative x
+(p15) fms.s.s0       f8 = fPolA, fArgSqrSgn, fPolATmp
+      br.ret.sptk    b0                           // Exit for 8.0 <=|x|< 9.125
+};;
+
+// Here if x is single precision denormal
+tanhf_denormal:
+{ .mfi
+      nop.m          0
+      fclass.m       p7,p8 = f8, 0x0a             // is x -denormal ?
+      nop.i          0
+}
+;;
+
+{ .mfi
+      nop.m          0
+(p7)  fma.s.s0       f8 = f8,f8,f8                // -denormal
+      nop.i          0
+}
+{ .mfb
+      nop.m          0
+(p8)  fnma.s.s0      f8 = f8,f8,f8                // +denormal
+      br.ret.sptk    b0                           // Exit for denormal
+}
+;;
+
+GLOBAL_LIBM_END(tanhf)