(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 770 insertions, 729 deletions

diff --git a/sysdeps/ia64/fpu/e_acos.S b/sysdeps/ia64/fpu/e_acos.S
index c2b31ab85e..7e83811727 100644
--- a/sysdeps/ia64/fpu/e_acos.S
+++ b/sysdeps/ia64/fpu/e_acos.S
@@ -1,10 +1,10 @@
 .file "acos.s"
 
-
-// Copyright (c) 2000 - 2003 Intel Corporation
+// Copyright (C) 2000, 2001, Intel Corporation
 // All rights reserved.
 //
-// Contributed 2000 by the Intel Numerics Group, Intel Corporation
+// Contributed 2/2/2000 by John Harrison, Ted Kubaska, Bob Norin, Shane Story,
+// and Ping Tak Peter Tang of the Computational Software Lab, Intel Corporation.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -20,7 +20,9 @@
 // * The name of Intel Corporation may not be used to endorse or promote
 // products derived from this software without specific prior written
 // permission.
-
+//
+// WARRANTY DISCLAIMER
+//
 // 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
@@ -35,801 +37,838 @@
 //
 // 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.
+// http://developer.intel.com/opensource.
 
 // History
 //==============================================================
-// 02/02/00 Initial version
-// 08/17/00 New and much faster algorithm.
-// 08/30/00 Avoided bank conflicts on loads, shortened |x|=1 and x=0 paths,
+// 2/02/00  Initial version 
+// 8/17/00  New and much faster algorithm.
+// 8/30/00  Avoided bank conflicts on loads, shortened |x|=1 and x=0 paths,
 //          fixed mfb split issue stalls.
-// 05/20/02 Cleaned up namespace and sf0 syntax
-// 08/02/02 New and much faster algorithm II
-// 02/06/03 Reordered header: .section, .global, .proc, .align
 
 // Description
 //=========================================
-// The acos function computes the principal value of the arc cosine of x.
-// acos(0) returns Pi/2, acos(1) returns 0, acos(-1) returns Pi.
+// The acos function computes the principle value of the arc sine of x.
 // A doman error occurs for arguments not in the range [-1,+1].
-//
-// The acos function returns the arc cosine in the range [0, Pi] radians.
-//
-// There are 8 paths:
-// 1. x = +/-0.0
-//    Return acos(x) = Pi/2 + x
-//
-// 2. 0.0 < |x| < 0.625
-//    Return acos(x) = Pi/2 - x - x^3 *PolA(x^2)
-//    where PolA(x^2) = A3 + A5*x^2 + A7*x^4 +...+ A35*x^32
-//
-// 3. 0.625 <=|x| < 1.0
-//    Return acos(x) = Pi/2 - asin(x) =
-//                   = Pi/2 - sign(x) * ( Pi/2 - sqrt(R) * PolB(R))
-//    Where R = 1 - |x|,
-//          PolB(R) = B0 + B1*R + B2*R^2 +...+B12*R^12
-//
-//    sqrt(R) is approximated using the following sequence:
-//        y0 = (1 + eps)/sqrt(R) - initial approximation by frsqrta,
-//             |eps| < 2^(-8)
-//        Then 3 iterations are used to refine the result:
-//        H0 = 0.5*y0
-//        S0 = R*y0
-//
-//        d0 = 0.5 - H0*S0
-//        H1 = H0 + d0*H0
-//        S1 = S0 + d0*S0
-//
-//        d1 = 0.5 - H1*S1
-//        H2 = H1 + d0*H1
-//        S2 = S1 + d0*S1
-//
-//        d2 = 0.5 - H2*S2
-//        S3 = S3 + d2*S3
-//
-//        S3 approximates sqrt(R) with enough accuracy for this algorithm
-//
-//    So, the result should be reconstracted as follows:
-//    acos(x) = Pi/2 - sign(x) * (Pi/2 - S3*PolB(R))
-//
-//    But for optimization purposes the reconstruction step is slightly
-//    changed:
-//    acos(x) = Cpi + sign(x)*PolB(R)*S2 - sign(x)*d2*S2*PolB(R)
-//        where Cpi = 0 if x > 0 and Cpi = Pi if x < 0
-//
-// 4. |x| = 1.0
-//    Return acos(1.0) = 0.0, acos(-1.0) = Pi
-//
-// 5. 1.0 < |x| <= +INF
-//    A doman error occurs for arguments not in the range [-1,+1]
-//
-// 6. x = [S,Q]NaN
-//    Return acos(x) = QNaN
-//
-// 7. x is denormal
-//    Return acos(x) = Pi/2 - x,
-//
-// 8. x is unnormal
-//    Normalize input in f8 and return to the very beginning of the function
-//
-// Registers used
-//==============================================================
-// Floating Point registers used:
-// f8, input, output
-// f6, f7, f9 -> f15, f32 -> f64
 
-// General registers used:
-// r3, r21 -> r31, r32 -> r38
+// The acos function returns the arc cosine in the range [0, +pi] radians.
+// acos(1) returns +0, acos(-1) returns pi, acos(0) returns pi/2.
+// acos(x) returns a Nan and raises the invalid exception for |x| >1
 
-// Predicate registers used:
-// p0, p6 -> p14
+// The acos function is just like asin except that pi/2 is added at the end.
 
 //
 // Assembly macros
 //=========================================
-// integer registers used
-// scratch
-rTblAddr                      = r3
-
-rPiBy2Ptr                     = r21
-rTmpPtr3                      = r22
-rDenoBound                    = r23
-rOne                          = r24
-rAbsXBits                     = r25
-rHalf                         = r26
-r0625                         = r27
-rSign                         = r28
-rXBits                        = r29
-rTmpPtr2                      = r30
-rTmpPtr1                      = r31
-
-// stacked
-GR_SAVE_PFS                   = r32
-GR_SAVE_B0                    = r33
-GR_SAVE_GP                    = r34
-GR_Parameter_X                = r35
-GR_Parameter_Y                = r36
-GR_Parameter_RESULT           = r37
-GR_Parameter_TAG              = r38
-
-// floating point registers used
-FR_X                          = f10
-FR_Y                          = f1
-FR_RESULT                     = f8
-
-
-// scratch
-fXSqr                         = f6
-fXCube                        = f7
-fXQuadr                       = f9
-f1pX                          = f10
-f1mX                          = f11
-f1pXRcp                       = f12
-f1mXRcp                       = f13
-fH                            = f14
-fS                            = f15
-// stacked
-fA3                           = f32
-fB1                           = f32
-fA5                           = f33
-fB2                           = f33
-fA7                           = f34
-fPiBy2                        = f34
-fA9                           = f35
-fA11                          = f36
-fB10                          = f35
-fB11                          = f36
-fA13                          = f37
-fA15                          = f38
-fB4                           = f37
-fB5                           = f38
-fA17                          = f39
-fA19                          = f40
-fB6                           = f39
-fB7                           = f40
-fA21                          = f41
-fA23                          = f42
-fB3                           = f41
-fB8                           = f42
-fA25                          = f43
-fA27                          = f44
-fB9                           = f43
-fB12                          = f44
-fA29                          = f45
-fA31                          = f46
-fA33                          = f47
-fA35                          = f48
-fBaseP                        = f49
-fB0                           = f50
-fSignedS                      = f51
-fD                            = f52
-fHalf                         = f53
-fR                            = f54
-fCloseTo1Pol                  = f55
-fSignX                        = f56
-fDenoBound                    = f57
-fNormX                        = f58
-fX8                           = f59
-fRSqr                         = f60
-fRQuadr                       = f61
-fR8                           = f62
-fX16                          = f63
-fCpi                          = f64
+
+#include "libm_support.h"
+
+// predicate registers
+//acos_pred_LEsqrt2by2            = p7
+//acos_pred_GTsqrt2by2            = p8
+
+// integer registers
+ASIN_Addr1                      = r33
+ASIN_Addr2                      = r34
+ASIN_FFFE                       = r35
+
+GR_SAVE_B0                      = r36
+GR_SAVE_PFS                     = r37
+GR_SAVE_GP                      = r38
+
+GR_Parameter_X                  = r39
+GR_Parameter_Y                  = r40
+GR_Parameter_RESULT             = r41
+GR_Parameter_Tag                = r42
+
+// floating point registers
+acos_coeff_P1                   = f32
+acos_coeff_P2                   = f33
+acos_coeff_P3                   = f34
+acos_coeff_P4                   = f35
+
+acos_coeff_P5                   = f36
+acos_coeff_P6                   = f37
+acos_coeff_P7                   = f38
+acos_coeff_P8                   = f39
+acos_coeff_P9                   = f40
+
+acos_coeff_P10                  = f41
+acos_coeff_P11                  = f42
+acos_coeff_P12                  = f43
+acos_coeff_P13                  = f44
+acos_coeff_P14                  = f45
+
+acos_coeff_P15                  = f46
+acos_coeff_P16                  = f47
+acos_coeff_P17                  = f48
+acos_coeff_P18                  = f49
+acos_coeff_P19                  = f50
+
+acos_coeff_P20                  = f51
+acos_coeff_P21                  = f52
+acos_const_sqrt2by2             = f53
+acos_const_piby2                = f54
+acos_abs_x                      = f55
+
+acos_tx                         = f56
+acos_tx2                        = f57
+acos_tx3                        = f58
+acos_tx4                        = f59
+acos_tx8                        = f60
+
+acos_tx11                       = f61
+acos_1poly_p8                   = f62
+acos_1poly_p19                  = f63
+acos_1poly_p4                   = f64
+acos_1poly_p15                  = f65
+
+acos_1poly_p6                   = f66
+acos_1poly_p17                  = f67
+acos_1poly_p0                   = f68
+acos_1poly_p11                  = f69
+acos_1poly_p2                   = f70
+
+acos_1poly_p13                  = f71
+acos_series_tx                  = f72
+acos_t                          = f73
+acos_t2                         = f74
+acos_t3                         = f75
+
+acos_t4                         = f76
+acos_t8                         = f77
+acos_t11                        = f78
+acos_poly_p8                    = f79
+acos_poly_p19                   = f80
+
+acos_poly_p4                    = f81
+acos_poly_p15                   = f82
+acos_poly_p6                    = f83
+acos_poly_p17                   = f84
+acos_poly_p0                    = f85
+
+acos_poly_p11                   = f86
+acos_poly_p2                    = f87
+acos_poly_p13                   = f88
+acos_series_t                   = f89
+acos_1by2                       = f90
+
+acos_3by2                       = f91
+acos_5by2                       = f92
+acos_11by4                      = f93
+acos_35by8                      = f94
+acos_63by8                      = f95
+
+acos_231by16                    = f96 
+acos_y0                         = f97 
+acos_H0                         = f98 
+acos_S0                         = f99 
+acos_d                          = f100
+
+acos_l1                         = f101
+acos_d2                         = f102
+acos_T0                         = f103
+acos_d1                         = f104
+acos_e0                         = f105
+
+acos_l2                         = f106
+acos_d3                         = f107
+acos_T3                         = f108
+acos_S1                         = f109
+acos_e1                         = f110
+
+acos_z                          = f111
+answer2                         = f112
+acos_sgn_x                      = f113
+acos_429by16                    = f114
+acos_18by4                      = f115
+
+acos_3by4                       = f116
+acos_l3                         = f117
+acos_T6                         = f118
+acos_const_add                  = f119
 
 // Data tables
 //==============================================================
-RODATA
+
+#ifdef _LIBC
+.rodata
+#else
+.data
+#endif
+
 .align 16
-LOCAL_OBJECT_START(acos_base_range_table)
-// Ai: Polynomial coefficients for the acos(x), |x| < .625000
-// Bi: Polynomial coefficients for the acos(x), |x| > .625000
-data8 0xBFDAAB56C01AE468 //A29
-data8 0x3FE1C470B76A5B2B //A31
-data8 0xBFDC5FF82A0C4205 //A33
-data8 0x3FC71FD88BFE93F0 //A35
-data8 0xB504F333F9DE6487, 0x00003FFF //B0
-data8 0xAAAAAAAAAAAAFC18, 0x00003FFC //A3
-data8 0x3F9F1C71BC4A7823 //A9
-data8 0x3F96E8BBAAB216B2 //A11
-data8 0x3F91C4CA1F9F8A98 //A13
-data8 0x3F8C9DDCEDEBE7A6 //A15
-data8 0x3F877784442B1516 //A17
-data8 0x3F859C0491802BA2 //A19
-data8 0x9999999998C88B8F, 0x00003FFB //A5
-data8 0x3F6BD7A9A660BF5E //A21
-data8 0x3F9FC1659340419D //A23
-data8 0xB6DB6DB798149BDF, 0x00003FFA //A7
-data8 0xBFB3EF18964D3ED3 //A25
-data8 0x3FCD285315542CF2 //A27
-data8 0xF15BEEEFF7D2966A, 0x00003FFB //B1
-data8 0x3EF0DDA376D10FB3 //B10
-data8 0xBEB83CAFE05EBAC9 //B11
-data8 0x3F65FFB67B513644 //B4
-data8 0x3F5032FBB86A4501 //B5
-data8 0x3F392162276C7CBA //B6
-data8 0x3F2435949FD98BDF //B7
-data8 0xD93923D7FA08341C, 0x00003FF9 //B2
-data8 0x3F802995B6D90BDB //B3
-data8 0x3F10DF86B341A63F //B8
-data8 0xC90FDAA22168C235, 0x00003FFF // Pi/2
-data8 0x3EFA3EBD6B0ECB9D //B9
-data8 0x3EDE18BA080E9098 //B12
-LOCAL_OBJECT_END(acos_base_range_table)
+
+acos_coeff_1_table:
+ASM_TYPE_DIRECTIVE(acos_coeff_1_table,@object)
+data8 0xE4E7E0A423A21249  , 0x00003FF8 //P7
+data8 0xC2F7EE0200FCE2A5  , 0x0000C003 //P18
+data8 0xB745D7F6C65C20E0  , 0x00003FF9 //P5
+data8 0xF75E381A323D4D94  , 0x0000C002 //P16
+data8 0x8959C2629C1024C0  , 0x0000C002 //P20
+data8 0xAFF68E7D241292C5  , 0x00003FF8 //P9
+data8 0xB6DB6DB7260AC30D  , 0x00003FFA //P3
+data8 0xD0417CE2B41CB7BF  , 0x0000C000 //P14
+data8 0x81D570FEA724E3E4  , 0x0000BFFD //P12
+data8 0xAAAAAAAAAAAAC277  , 0x00003FFC //P1
+data8 0xF534912FF3E7B76F  , 0x00003FFF //P21
+data8 0xc90fdaa22168c235  , 0x00003fff // pi/2
+data8 0x0000000000000000  , 0x00000000 // pad to avoid bank conflicts
+ASM_SIZE_DIRECTIVE(acos_coeff_1_table)
+
+
+acos_coeff_2_table:
+ASM_TYPE_DIRECTIVE(acos_coeff_2_table,@object)
+data8 0x8E26AF5F29B39A2A  , 0x00003FF9 //P6
+data8 0xB4F118A4B1015470  , 0x00004003 //P17
+data8 0xF8E38E10C25990E0  , 0x00003FF9 //P4
+data8 0x80F50489AEF1CAC6  , 0x00004002 //P15
+data8 0x92728015172CFE1C  , 0x00004003 //P19
+data8 0xBBC3D831D4595971  , 0x00003FF8 //P8
+data8 0x999999999952A5C3  , 0x00003FFB //P2
+data8 0x855576BE6F0975EC  , 0x00003FFF //P13
+data8 0xF12420E778077D89  , 0x00003FFA //P11
+data8 0xB6590FF4D23DE003  , 0x00003FF3 //P10
+data8 0xb504f333f9de6484  , 0x00003ffe // sqrt(2)/2
+ASM_SIZE_DIRECTIVE(acos_coeff_2_table)
+
+
+.align 32
+.global acos
+ASM_TYPE_DIRECTIVE(acos,@function)
 
 .section .text
-GLOBAL_LIBM_ENTRY(acos)
-acos_unnormal_back:
-{ .mfi
-      getf.d             rXBits = f8 // grab bits of input value
-      // set p12 = 1 if x is a NaN, denormal, or zero
-      fclass.m           p12, p0 = f8, 0xcf
-      adds               rSign = 1, r0
-}
-{ .mfi
-      addl               rTblAddr = @ltoff(acos_base_range_table),gp
-      // 1 - x = 1 - |x| for positive x
-      fms.s1             f1mX = f1, f1, f8
-      addl               rHalf = 0xFFFE, r0 // exponent of 1/2
-}
-;;
-{ .mfi
-      addl               r0625 = 0x3FE4, r0 // high 16 bits of 0.625
-      // set p8 = 1 if x < 0
-      fcmp.lt.s1         p8, p9 = f8, f0
-      shl                rSign = rSign, 63 // sign bit
-}
-{ .mfi
-      // point to the beginning of the table
-      ld8                rTblAddr = [rTblAddr]
-      // 1 + x = 1 - |x| for negative x
-      fma.s1             f1pX = f1, f1, f8
-      adds               rOne = 0x3FF, r0
-}
-;;
-{ .mfi
-      andcm              rAbsXBits = rXBits, rSign // bits of |x|
-      fmerge.s           fSignX = f8, f1 // signum(x)
-      shl                r0625 = r0625, 48 // bits of DP representation of 0.625
-}
-{ .mfb
-      setf.exp           fHalf = rHalf // load A2 to FP reg
-      fma.s1             fXSqr = f8, f8, f0 // x^2
-      // branch on special path if x is a NaN, denormal, or zero
-(p12) br.cond.spnt       acos_special
-}
-;;
-{ .mfi
-      adds               rPiBy2Ptr = 272, rTblAddr
-      nop.f              0
-      shl                rOne = rOne, 52 // bits of 1.0
-}
-{ .mfi
-      adds               rTmpPtr1 = 16, rTblAddr
-      nop.f              0
-      // set p6 = 1 if |x| < 0.625
-      cmp.lt             p6, p7 = rAbsXBits, r0625
-}
-;;
-{ .mfi
-      ldfpd              fA29, fA31 = [rTblAddr] // A29, fA31
-      // 1 - x = 1 - |x| for positive x
-(p9)  fms.s1             fR = f1, f1, f8
-      // point to coefficient of "near 1" polynomial
-(p7)  adds               rTmpPtr2 = 176, rTblAddr
-}
-{ .mfi
-      ldfpd              fA33, fA35 = [rTmpPtr1], 16 // A33, fA35
-      // 1 + x = 1 - |x| for negative x
-(p8)  fma.s1             fR = f1, f1, f8
-(p6)  adds               rTmpPtr2 = 48, rTblAddr
-}
-;;
-{ .mfi
-      ldfe               fB0 = [rTmpPtr1], 16 // B0
-      nop.f              0
-      nop.i              0
-}
-{ .mib
-      adds               rTmpPtr3 = 16, rTmpPtr2
-      // set p10 = 1 if |x| = 1.0
-      cmp.eq             p10, p0 = rAbsXBits, rOne
-      // branch on special path for |x| = 1.0
-(p10) br.cond.spnt       acos_abs_1
-}
-;;
-{ .mfi
-      ldfe               fA3 = [rTmpPtr2], 48 // A3 or B1
-      nop.f              0
-      adds               rTmpPtr1 = 64, rTmpPtr3
-}
-{ .mib
-      ldfpd              fA9, fA11 = [rTmpPtr3], 16 // A9, A11 or B10, B11
-      // set p11 = 1 if |x| > 1.0
-      cmp.gt             p11, p0 = rAbsXBits, rOne
-      // branch on special path for |x| > 1.0
-(p11) br.cond.spnt       acos_abs_gt_1
-}
-;;
-{ .mfi
-      ldfpd              fA17, fA19 = [rTmpPtr2], 16 // A17, A19 or B6, B7
-      // initial approximation of 1 / sqrt(1 - x)
-      frsqrta.s1         f1mXRcp, p0 = f1mX
-      nop.i              0
-}
-{ .mfi
-      ldfpd              fA13, fA15 = [rTmpPtr3] // A13, A15 or B4, B5
-      fma.s1             fXCube = fXSqr, f8, f0 // x^3
-      nop.i              0
-}
-;;
-{ .mfi
-      ldfe               fA5 = [rTmpPtr2], 48 // A5 or B2
-      // initial approximation of 1 / sqrt(1 + x)
-      frsqrta.s1         f1pXRcp, p0 = f1pX
-      nop.i              0
-}
-{ .mfi
-      ldfpd              fA21, fA23 = [rTmpPtr1], 16 // A21, A23 or B3, B8
-      fma.s1             fXQuadr = fXSqr, fXSqr, f0 // x^4
-      nop.i              0
-}
-;;
-{ .mfi
-      ldfe               fA7 = [rTmpPtr1] // A7 or Pi/2
-      fma.s1             fRSqr = fR, fR, f0 // R^2
-      nop.i              0
-}
-{ .mfb
-      ldfpd              fA25, fA27 = [rTmpPtr2] // A25, A27 or B9, B12
-      nop.f              0
-(p6)  br.cond.spnt       acos_base_range;
-}
-;;
+.proc  acos
+.align 32
 
-{ .mfi
-      nop.m              0
-(p9)  fma.s1             fH = fHalf, f1mXRcp, f0 // H0 for x > 0
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-(p9)  fma.s1             fS = f1mX, f1mXRcp, f0  // S0 for x > 0
-      nop.i              0
-}
-;;
-{ .mfi
-      nop.m              0
-(p8)  fma.s1             fH = fHalf, f1pXRcp, f0 // H0 for x < 0
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-(p8)  fma.s1             fS = f1pX, f1pXRcp, f0  // S0 for x > 0
-      nop.i              0
-}
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fRQuadr = fRSqr, fRSqr, f0 // R^4
-      nop.i              0
-}
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fB11 = fB11, fR, fB10
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-      fma.s1             fB1 = fB1, fR, fB0
-      nop.i              0
-}
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fB5 = fB5, fR, fB4
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-      fma.s1             fB7 = fB7, fR, fB6
-      nop.i              0
-}
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fB3 = fB3, fR, fB2
-      nop.i              0
-}
-;;
-{ .mfi
-      nop.m              0
-      fnma.s1            fD = fH, fS, fHalf // d0 = 1/2 - H0*S0
-      nop.i              0
-}
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fR8 = fRQuadr, fRQuadr, f0 // R^4
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-      fma.s1             fB9 = fB9, fR, fB8
-      nop.i              0
+
+acos:
+ 
+{     .mfi 
+     alloc      r32               = ar.pfs,1,6,4,0
+     fma.s1    acos_tx        =    f8,f8,f0
+     addl      ASIN_Addr2     =    @ltoff(acos_coeff_2_table),gp
+} 
+{     .mfi 
+     mov       ASIN_FFFE      =    0xFFFE
+     fnma.s1   acos_t         =    f8,f8,f1
+     addl      ASIN_Addr1     =    @ltoff(acos_coeff_1_table),gp
 }
 ;;
-{.mfi
-      nop.m              0
-      fma.s1             fB12 = fB12, fRSqr, fB11
-      nop.i              0
-}
-{.mfi
-      nop.m              0
-      fma.s1             fB7 = fB7, fRSqr, fB5
-      nop.i              0
-}
+
+ 
+{     .mfi 
+     setf.exp       acos_1by2      =    ASIN_FFFE
+     fmerge.s       acos_abs_x     =    f1,f8
+     nop.i          999              ;;
+} 
+ 
+
+{     .mmf 
+     ld8       ASIN_Addr1     =    [ASIN_Addr1]
+     ld8       ASIN_Addr2     =    [ASIN_Addr2]
+     fmerge.s  acos_sgn_x     =    f8,f1
+} 
 ;;
-{.mfi
-      nop.m              0
-      fma.s1             fB3 = fB3, fRSqr, fB1
-      nop.i              0
+
+
+{     .mfi 
+     nop.m                      999
+     fcmp.lt.s1  p11,p12  = f8, f0
+     nop.i          999              ;;
+} 
+ 
+ 
+{     .mfi 
+     ldfe      acos_coeff_P7  =    [ASIN_Addr1],16
+     fma.s1    acos_tx2       =    acos_tx,acos_tx,f0
+     nop.i                      999
+} 
+{     .mfi 
+     ldfe      acos_coeff_P6  =    [ASIN_Addr2],16
+     fma.s1    acos_t2        =    acos_t,acos_t,f0
+     nop.i                      999;;
 }
+
+ 
+{     .mmf 
+     ldfe      acos_coeff_P18 =    [ASIN_Addr1],16
+     ldfe      acos_coeff_P17 =    [ASIN_Addr2],16
+     fclass.m.unc p8,p0  = f8, 0xc3	//@qnan |@snan
+} 
 ;;
-{ .mfi
-      nop.m              0
-      fma.s1             fH = fH, fD, fH // H1 = H0 + H0*d0
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-      fma.s1             fS = fS, fD, fS // S1 = S0 + S0*d0
-      nop.i              0
-}
+
+ 
+{     .mmf 
+     ldfe      acos_coeff_P5  =    [ASIN_Addr1],16
+     ldfe      acos_coeff_P4  =    [ASIN_Addr2],16
+     frsqrta.s1     acos_y0,p0     =    acos_t
+} 
 ;;
-{.mfi
-      nop.m              0
-(p9)  fma.s1             fCpi = f1, f0, f0 // Cpi = 0 if x > 0
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-(p8)  fma.s1             fCpi = fPiBy2, f1, fPiBy2 // Cpi = Pi if x < 0
-      nop.i              0
+
+ 
+{     .mfi 
+     ldfe      acos_coeff_P16 =    [ASIN_Addr1],16
+     fcmp.gt.s1 p9,p0 = acos_abs_x,f1
+     nop.i                      999
+} 
+{     .mfb 
+     ldfe      acos_coeff_P15 =    [ASIN_Addr2],16
+(p8) fma.d     f8 = f8,f1,f0
+(p8) br.ret.spnt b0
 }
 ;;
-{ .mfi
-      nop.m              0
-      fma.s1             fB12 = fB12, fRSqr, fB9
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-      fma.s1             fB7 = fB7, fRQuadr, fB3
-      nop.i              0
-}
+
+ 
+{     .mmf 
+     ldfe      acos_coeff_P20 =    [ASIN_Addr1],16
+     ldfe      acos_coeff_P19 =    [ASIN_Addr2],16
+     fclass.m.unc p10,p0 = f8, 0x07	//@zero
+} 
 ;;
-{.mfi
-      nop.m              0
-      fnma.s1            fD = fH, fS, fHalf // d1 = 1/2 - H1*S1
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-      fnma.s1            fSignedS = fSignX, fS, f0 // -signum(x)*S1
-      nop.i              0
+
+ 
+{     .mfi 
+     ldfe      acos_coeff_P9  =    [ASIN_Addr1],16
+     fma.s1    acos_t4        =    acos_t2,acos_t2,f0
+(p9) mov GR_Parameter_Tag = 58 
+} 
+{     .mfi 
+     ldfe      acos_coeff_P8  =    [ASIN_Addr2],16
+     fma.s1    acos_3by2      =    acos_1by2,f1,f1
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fCloseTo1Pol = fB12, fR8, fB7
-      nop.i              0
+
+ 
+{     .mfi 
+     ldfe      acos_coeff_P2  =    [ASIN_Addr2],16
+     fma.s1    acos_tx4       =    acos_tx2,acos_tx2,f0
+     nop.i 999
+} 
+{     .mfb 
+     ldfe      acos_coeff_P3  =    [ASIN_Addr1],16
+     fma.s1    acos_t3        =    acos_t,acos_t2,f0
+(p9) br.cond.spnt  __libm_error_region
 }
 ;;
-{ .mfi
-      nop.m              0
-      fma.s1             fH = fH, fD, fH // H2 = H1 + H1*d1
-      nop.i              0
-}
-{ .mfi
-      nop.m              0
-      fma.s1             fS = fS, fD, fS // S2 = S1 + S1*d1
-      nop.i              0
+
+ 
+{     .mfi 
+     ldfe      acos_coeff_P13 =    [ASIN_Addr2],16
+     fma.s1    acos_H0        =    acos_y0,acos_1by2,f0
+     nop.i                      999
+} 
+{     .mfi 
+     ldfe      acos_coeff_P14 =    [ASIN_Addr1],16
+     fma.s1    acos_S0        =    acos_y0,acos_t,f0
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      // -signum(x)* S2 = -signum(x)*(S1 + S1*d1)
-      fma.s1             fSignedS = fSignedS, fD, fSignedS
-      nop.i              0
+
+ 
+{     .mfi 
+     ldfe      acos_coeff_P11 =    [ASIN_Addr2],16
+     fcmp.eq.s1  p6,p0  = acos_abs_x, f1
+     nop.i                      999
+} 
+{     .mfi 
+     ldfe      acos_coeff_P12 =    [ASIN_Addr1],16
+     fma.s1    acos_tx3       =    acos_tx,acos_tx2,f0
+     nop.i 999
 }
 ;;
-{.mfi
-      nop.m              0
-      fnma.s1            fD = fH, fS, fHalf // d2 = 1/2 - H2*S2
-      nop.i              0
+
+ 
+{     .mfi 
+     ldfe      acos_coeff_P10 =    [ASIN_Addr2],16
+     fma.s1    acos_1poly_p6  =    acos_tx,acos_coeff_P7,acos_coeff_P6
+     nop.i                      999
+} 
+{     .mfi 
+     ldfe      acos_coeff_P1  =    [ASIN_Addr1],16
+     fma.s1    acos_poly_p6   =    acos_t,acos_coeff_P7,acos_coeff_P6
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      // Cpi + signum(x)*PolB*S2
-      fnma.s1            fCpi = fSignedS, fCloseTo1Pol, fCpi
-      nop.i              0
+
+ 
+{     .mfi 
+     ldfe      acos_const_sqrt2by2 =    [ASIN_Addr2],16
+     fma.s1    acos_5by2           =    acos_3by2,f1,f1
+     nop.i                           999
+} 
+{     .mfi 
+     ldfe      acos_coeff_P21 =    [ASIN_Addr1],16
+     fma.s1    acos_11by4     =    acos_3by2,acos_3by2,acos_1by2
+     nop.i                      999;;
 }
-{ .mfi
-      nop.m              0
-      // signum(x)*PolB * S2
-      fnma.s1            fCloseTo1Pol = fSignedS, fCloseTo1Pol, f0
-      nop.i              0
+
+ 
+{     .mfi 
+     ldfe      acos_const_piby2    =    [ASIN_Addr1],16
+     fma.s1    acos_poly_p17       =    acos_t,acos_coeff_P18,acos_coeff_P17
+     nop.i                      999
+} 
+{     .mfb 
+     nop.m                 999
+     fma.s1    acos_3by4 =    acos_3by2,acos_1by2,f0
+(p10) br.cond.spnt  L(ACOS_ZERO)    // Branch to short path if x=0
 }
 ;;
-{ .mfb
-      nop.m              0
-      // final result for 0.625 <= |x| < 1
-      fma.d.s0           f8 = fCloseTo1Pol, fD, fCpi
-      // exit here for  0.625 <= |x| < 1
-      br.ret.sptk        b0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p15  =    acos_t,acos_coeff_P16,acos_coeff_P15
+     nop.i                      999
+} 
+{     .mfb 
+     nop.m                 999
+     fnma.s1   acos_d    =    acos_S0,acos_H0,acos_1by2
+(p6) br.cond.spnt  L(ACOS_ABS_ONE)    // Branch to short path if |x|=1
 }
 ;;
 
-
-// here if |x| < 0.625
-.align 32
-acos_base_range:
-{ .mfi
-      ldfe               fCpi = [rPiBy2Ptr] // Pi/2
-      fma.s1             fA33 = fA33, fXSqr, fA31
-      nop.i              0
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p19  =    acos_t,acos_coeff_P20,acos_coeff_P19
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p4   =    acos_t,acos_coeff_P5,acos_coeff_P4
+     nop.i                      999;;
 }
-{ .mfi
-      nop.m              0
-      fma.s1             fA15 = fA15, fXSqr, fA13
-      nop.i              0
-}
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fA29 = fA29, fXSqr, fA27
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p17 =    acos_tx,acos_coeff_P18,acos_coeff_P17
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p8   =    acos_t,acos_coeff_P9,acos_coeff_P8
+     nop.i                      999;;
 }
-{ .mfi
-      nop.m              0
-      fma.s1             fA25 = fA25, fXSqr, fA23
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fms.s1    acos_35by8     =    acos_5by2,acos_11by4,acos_5by2
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_63by8     =    acos_5by2,acos_11by4,f1
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fA21 = fA21, fXSqr, fA19
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p13  =    acos_t,acos_coeff_P14,acos_coeff_P13
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_18by4     =    acos_3by2,acos_5by2,acos_3by4
+     nop.i                      999;;
 }
-{ .mfi
-      nop.m              0
-      fma.s1             fA9 = fA9, fXSqr, fA7
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_l1   =    acos_5by2,acos_d,acos_3by2
+     nop.i                 999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_d2   =    acos_d,acos_d,f0
+     nop.i                 999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fA5 = fA5, fXSqr, fA3
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p15  =    acos_t2,acos_poly_p17,acos_poly_p15
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_T0   =    acos_d,acos_S0,f0
+     nop.i                 999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fA35 = fA35, fXQuadr, fA33
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p19  =    acos_t2,acos_coeff_P21,acos_poly_p19
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p4   =    acos_t2,acos_poly_p6,acos_poly_p4
+     nop.i                      999;;
 }
-{ .mfi
-      nop.m              0
-      fma.s1             fA17 = fA17, fXQuadr, fA15
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_d1   =    acos_35by8,acos_d,f0
+     nop.i                 999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_231by16   =    acos_3by2,acos_35by8,acos_63by8
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fX8 = fXQuadr, fXQuadr, f0 // x^8
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p2   =    acos_t,acos_coeff_P3,acos_coeff_P2
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p8   =    acos_t2,acos_coeff_P10,acos_poly_p8
+     nop.i                      999;;
 }
-{ .mfi
-      nop.m              0
-      fma.s1             fA25 = fA25, fXQuadr, fA21
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p11  =    acos_t,acos_coeff_P12,acos_coeff_P11
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_e0   =    acos_d2,acos_l1,acos_d
+     nop.i                 999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fA9 = fA9, fXQuadr, fA5
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p15 =    acos_tx,acos_coeff_P16,acos_coeff_P15
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p0   =    acos_t,acos_coeff_P1,f1
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fms.s1             fCpi = fCpi, f1, f8 // Pi/2 - x
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p19 =    acos_tx,acos_coeff_P20,acos_coeff_P19
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p4  =    acos_tx,acos_coeff_P5,acos_coeff_P4
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fA35 = fA35, fXQuadr, fA29
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p8  =    acos_tx,acos_coeff_P9,acos_coeff_P8
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_l2   =    acos_231by16,acos_d,acos_63by8
+     nop.i                 999;;
 }
-{ .mfi
-      nop.m              0
-      fma.s1             fA17 = fA17, fXSqr, fA11
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_d3   =    acos_d2,acos_d,f0
+     nop.i                 999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_T3   =    acos_d2,acos_T0,f0
+     nop.i                 999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fX16 = fX8, fX8, f0 // x^16
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_429by16   =    acos_18by4,acos_11by4,acos_231by16
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_S1   =    acos_e0,acos_S0,acos_S0
+     nop.i                 999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fA35 = fA35, fX8, fA25
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p4   =    acos_t4,acos_poly_p8,acos_poly_p4
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p15  =    acos_t4,acos_poly_p19,acos_poly_p15
+     nop.i                      999;;
 }
-{ .mfi
-      nop.m              0
-      fma.s1             fA17 = fA17, fX8, fA9
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p0   =    acos_t2,acos_poly_p2,acos_poly_p0
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p11  =    acos_t2,acos_poly_p13,acos_poly_p11
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      fma.s1             fBaseP = fA35, fX16, fA17
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_t8   =    acos_t4,acos_t4,f0
+     nop.i                 999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_e1   =    acos_d2,acos_l2,acos_d1
+     nop.i                 999;;
 }
-;;
-{ .mfb
-      nop.m              0
-      // final result for |x| < 0.625
-      fnma.d.s0           f8 = fBaseP, fXCube, fCpi
-      // exit here for |x| < 0.625 path
-      br.ret.sptk        b0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p4  =    acos_tx2,acos_1poly_p6,acos_1poly_p4
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p15 =    acos_tx2,acos_1poly_p17,acos_1poly_p15
+     nop.i                      999;;
 }
-;;
 
-// here if |x| = 1
-// acos(1) = 0
-// acos(-1) = Pi
-.align 32
-acos_abs_1:
-{ .mfi
-      ldfe               fPiBy2 = [rPiBy2Ptr] // Pi/2
-      nop.f              0
-      nop.i              0
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p8  =    acos_tx2,acos_coeff_P10,acos_1poly_p8
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p19 =    acos_tx2,acos_coeff_P21,acos_1poly_p19
+     nop.i                      999;;
 }
-;;
-.pred.rel "mutex", p8, p9
-{ .mfi
-      nop.m              0
-      // result for x = 1.0
-(p9)  fma.d.s0           f8 = f1, f0, f0 // 0.0
-      nop.i              0
-}
-{.mfb
-      nop.m              0
-      // result for x = -1.0
-(p8)  fma.d.s0           f8 = fPiBy2, f1, fPiBy2 // Pi
-      // exit here for |x| = 1.0
-      br.ret.sptk        b0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p2  =    acos_tx,acos_coeff_P3,acos_coeff_P2
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p13 =    acos_tx,acos_coeff_P14,acos_coeff_P13
+     nop.i                      999;;
 }
-;;
 
-// here if x is a NaN, denormal, or zero
-.align 32
-acos_special:
-{ .mfi
-      // point to Pi/2
-      adds               rPiBy2Ptr = 272, rTblAddr
-      // set p12 = 1 if x is a NaN
-      fclass.m           p12, p0 = f8, 0xc3
-      nop.i              0
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p0  =    acos_tx,acos_coeff_P1,f1
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p11 =    acos_tx,acos_coeff_P12,acos_coeff_P11
+     nop.i                      999;;
 }
-{ .mlx
-      nop.m              0
-      // smallest positive DP normalized number
-      movl               rDenoBound = 0x0010000000000000
+
+ 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_l3   =    acos_429by16,acos_d,f0
+     nop.i                 999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_z    =    acos_e1,acos_T3,acos_S1
+     nop.i                 999;;
 }
-;;
-{ .mfi
-      ldfe               fPiBy2 = [rPiBy2Ptr] // Pi/2
-      // set p13 = 1 if x = 0.0
-      fclass.m           p13, p0 = f8, 0x07
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p11  =    acos_t4,acos_poly_p15,acos_poly_p11
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_T6   =    acos_T3,acos_d3,f0
+     nop.i                 999;;
 }
-{ .mfi
-      nop.m              0
-      fnorm.s1           fNormX = f8
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_t11  =    acos_t8,acos_t3,f0
+     nop.i                 999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_poly_p0   =    acos_t4,acos_poly_p4,acos_poly_p0
+     nop.i                      999;;
 }
-;;
-{ .mfb
-      // load smallest normal to FP reg
-      setf.d             fDenoBound = rDenoBound
-      // answer if x is a NaN
-(p12) fma.d.s0           f8 = f8,f1,f0
-      // exit here if x is a NaN
-(p12) br.ret.spnt        b0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p4  =    acos_tx4,acos_1poly_p8,acos_1poly_p4
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p15 =    acos_tx4,acos_1poly_p19,acos_1poly_p15
+     nop.i                      999;;
 }
-;;
-{ .mfi
-      nop.m              0
-      // absolute value of normalized x
-      fmerge.s           fNormX = f1, fNormX
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p0  =    acos_tx2,acos_1poly_p2,acos_1poly_p0
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p11 =    acos_tx2,acos_1poly_p13,acos_1poly_p11
+     nop.i                      999;;
 }
-;;
-{ .mfb
-      nop.m              0
-      // final result for x = 0
-(p13) fma.d.s0           f8 = fPiBy2, f1, f8
-      // exit here if x = 0.0
-(p13) br.ret.spnt        b0
+
+ 
+{     .mfi 
+     nop.m                                                         999
+//     fcmp.le.s1     acos_pred_LEsqrt2by2,acos_pred_GTsqrt2by2    =    acos_abs_x,acos_const_sqrt2by2
+     fcmp.le.s1     p7,p8    =    acos_abs_x,acos_const_sqrt2by2
+     nop.i                                                         999
+} 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_tx8  =    acos_tx4,acos_tx4,f0
+     nop.i                 999;;
 }
-;;
-// if we still here then x is denormal or unnormal
-{ .mfi
-      nop.m              0
-      // set p14 = 1 if normalized x is greater than or
-      // equal to the smallest denormalized value
-      // So, if p14 is set to 1 it means that we deal with
-      // unnormal rather than with "true" denormal
-      fcmp.ge.s1         p14, p0 = fNormX, fDenoBound
-      nop.i              0
+
+ 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_z    =    acos_l3,acos_T6,acos_z
+     nop.i                 999;;
+} 
+ 
+{     .mfi
+     nop.m                      999
+     fma.s1    acos_series_t  =    acos_t11,acos_poly_p11,acos_poly_p0
+     nop.i                      999
+}
+{    .mfi
+     nop.m 999
+(p11) fma.s1 acos_const_add = acos_const_piby2, f1, acos_const_piby2
+     nop.i 999
 }
 ;;
+
 { .mfi
-      nop.m              0
-(p14) fcmp.eq.s0         p6, p0 = f8, f0      // Set D flag if x unnormal
-      nop.i              0
-}
-{ .mfb
-      nop.m              0
-      // normalize unnormal input
-(p14) fnorm.s1           f8 = f8
-      // return to the main path
-(p14) br.cond.sptk       acos_unnormal_back
+      nop.m 999
+(p12) fma.s1 acos_const_add = f1,f0,f0
+      nop.i 999
 }
 ;;
-// if we still here it means that input is "true" denormal
-{ .mfb
-      nop.m              0
-      // final result if x is denormal
-      fms.d.s0           f8 = fPiBy2, f1, f8 // Pi/2 - x
-      // exit here if x is denormal
-      br.ret.sptk        b0
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p0  =    acos_tx4,acos_1poly_p4,acos_1poly_p0
+     nop.i                      999
+} 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_1poly_p11 =    acos_tx4,acos_1poly_p15,acos_1poly_p11
+     nop.i                      999;;
 }
-;;
 
-// here if |x| > 1.0
-// error handler should be called
-.align 32
-acos_abs_gt_1:
-{ .mfi
-      alloc              r32 = ar.pfs, 0, 3, 4, 0 // get some registers
-      fmerge.s           FR_X = f8,f8
-      nop.i              0
-}
-{ .mfb
-      mov                GR_Parameter_TAG = 58 // error code
-      frcpa.s0           FR_RESULT, p0 = f0,f0
-      // call error handler routine
-      br.cond.sptk       __libm_error_region
-}
-;;
-GLOBAL_LIBM_END(acos)
+ 
+{     .mfi 
+     nop.m                 999
+     fma.s1    acos_tx11 =    acos_tx8,acos_tx3,f0
+     nop.i                 999;;
+} 
+ 
+{     .mfi 
+                         nop.m                 999
+//(acos_pred_GTsqrt2by2)   fnma.s1      answer2   =    acos_z,acos_series_t,acos_const_piby2
+(p8)   fnma.s1      answer2   =    acos_z,acos_series_t,f0
+                         nop.i                 999;;
+} 
+ 
+{     .mfi 
+     nop.m                      999
+     fma.s1    acos_series_tx =    acos_tx11,acos_1poly_p11,acos_1poly_p0
+     nop.i                      999;;
+} 
+ 
+{     .mfi 
+                         nop.m                 999
+//(acos_pred_GTsqrt2by2)   fnma.d     f8   =    acos_sgn_x,answer2,acos_const_piby2
+(p8)   fnma.d     f8   =    acos_sgn_x,answer2,acos_const_add
+                         nop.i                 999;;
+} 
+ 
+{     .mfb 
+                         nop.m                 999
+//(acos_pred_LEsqrt2by2)   fnma.d     f8   =    f8,acos_series_tx,acos_const_piby2
+(p7)   fnma.d     f8   =    f8,acos_series_tx,acos_const_piby2
+     br.ret.sptk b0 ;;
+} 
+
+
+L(ACOS_ZERO):
+// Here if x=0
+{     .mfb 
+      nop.m                 999
+      fma.d    f8 =    acos_const_piby2,f1,f0
+      br.ret.sptk b0 ;;
+} 
+
+
+L(ACOS_ABS_ONE):
+.pred.rel "mutex",p11,p12
+// Here if |x|=1
+{     .mfi 
+      nop.m                 999
+(p11) fma.d    f8 =    acos_const_piby2,f1,acos_const_piby2 // acos(-1)=pi
+      nop.i                 999
+} 
+{     .mfb 
+      nop.m                 999
+(p12) fma.d    f8 =    f1,f0,f0 // acos(1)=0
+      br.ret.sptk b0 ;;
+} 
 
 
+.endp acos
+ASM_SIZE_DIRECTIVE(acos)
 
-LOCAL_LIBM_ENTRY(__libm_error_region)
+.proc __libm_error_region
+__libm_error_region:
 .prologue
 { .mfi
         add   GR_Parameter_Y=-32,sp             // Parameter 2 value
-        nop.f 0
+                nop.f 999
 .save   ar.pfs,GR_SAVE_PFS
         mov  GR_SAVE_PFS=ar.pfs                 // Save ar.pfs
 }
@@ -840,29 +879,28 @@ LOCAL_LIBM_ENTRY(__libm_error_region)
         mov GR_SAVE_GP=gp                       // Save gp
 };;
 { .mmi
-        stfd [GR_Parameter_Y] = FR_Y,16         // STORE Parameter 2 on stack
+        stfs [GR_Parameter_Y] = f1,16         // Store Parameter 2 on stack
         add GR_Parameter_X = 16,sp              // Parameter 1 address
 .save   b0, GR_SAVE_B0
         mov GR_SAVE_B0=b0                       // Save b0
 };;
+
 .body
+        frcpa.s0 f9,p0 = f0,f0
+;;
+
 { .mib
-        stfd [GR_Parameter_X] = FR_X                  // STORE Parameter 1 on stack
-        add   GR_Parameter_RESULT = 0,GR_Parameter_Y  // Parameter 3 address
-        nop.b 0
+        stfd [GR_Parameter_X] = f8            // Store Parameter 1 on stack
+        add   GR_Parameter_RESULT = 0,GR_Parameter_Y
+        nop.b 0                                 // Parameter 3 address
 }
 { .mib
-        stfd [GR_Parameter_Y] = FR_RESULT             // STORE Parameter 3 on stack
-        add   GR_Parameter_Y = -16,GR_Parameter_Y
-        br.call.sptk b0=__libm_error_support#         // Call error handling function
+        stfd [GR_Parameter_Y] = f9,-16           // Store Parameter 3 on stack
+        adds r32 = 48,sp
+        br.call.sptk b0=__libm_error_support#   // Call error handling function
 };;
 { .mmi
-        add   GR_Parameter_RESULT = 48,sp
-        nop.m 0
-        nop.i 0
-};;
-{ .mmi
-        ldfd  f8 = [GR_Parameter_RESULT]       // Get return result off stack
+        ldfd  f8 = [r32]       // Get return result off stack
 .restore sp
         add   sp = 64,sp                       // Restore stack pointer
         mov   b0 = GR_SAVE_B0                  // Restore return address
@@ -871,8 +909,11 @@ LOCAL_LIBM_ENTRY(__libm_error_region)
         mov   gp = GR_SAVE_GP                  // Restore gp
         mov   ar.pfs = GR_SAVE_PFS             // Restore ar.pfs
         br.ret.sptk     b0                     // Return
+
 };;
 
-LOCAL_LIBM_END(__libm_error_region)
-.type   __libm_error_support#,@function
-.global __libm_error_support#
+.endp __libm_error_region
+ASM_SIZE_DIRECTIVE(__libm_error_region)
+
+.type   __libm_error_support,@function
+.global __libm_error_support