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

1 files changed, 138 insertions, 114 deletions

diff --git a/sysdeps/ia64/fpu/s_floor.S b/sysdeps/ia64/fpu/s_floor.S
index 9ed9d6dcdb..438b0fa867 100644
--- a/sysdeps/ia64/fpu/s_floor.S
+++ b/sysdeps/ia64/fpu/s_floor.S
@@ -1,10 +1,10 @@
 .file "floor.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
@@ -20,68 +20,86 @@
 // * 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
+//
+// 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
+// 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
+// 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.
-//
+// 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.
+// problem reports or change requests be submitted to it directly at 
+// http://developer.intel.com/opensource.
 //
+.align 32
+.global floor#
+
+.section .text
+.proc  floor#
+.align 32
+
 // History
 //==============================================================
-// 02/02/00 Initial version
-// 03/22/00 Updated to improve performance
-// 06/13/00 Improved speed, fixed setting of inexact flag
-// 06/27/00 Eliminated incorrect invalid flag setting
-// 02/07/01 Corrected sign of zero result in round to -inf mode
-// 05/20/02 Cleaned up namespace and sf0 syntax
-// 01/28/03 Improved performance
-//==============================================================
+// 2/02/00: Initial version
+// 3/22/00: Updated to improve performance 
+// 6/13/00: Improved speed, fixed setting of inexact flag
+// 6/27/00: Eliminated incorrect invalid flag setting
+// 2/07/01: Corrected sign of zero result in round to -inf mode
 
 // API
 //==============================================================
 // double floor(double x)
-//==============================================================
 
-// general input registers:
-// r14 - r18
+// general input registers:  
+
+floor_GR_FFFF      = r14
+floor_GR_signexp   = r15
+floor_GR_exponent  = r16
+floor_GR_expmask   = r17
+floor_GR_bigexp    = r18
+
 
-rSignexp   = r14
-rExp       = r15
-rExpMask   = r16
-rBigexp    = r17
-rM1        = r18
+// predicate registers used: 
 
-// floating-point registers:
-// f8 - f13
+// p6  ==> Input is NaN, infinity, zero
+// p7  ==> Input is denormal
+// p8  ==> Input is <0
+// p9  ==> Input is >=0
+// p10 ==> Input is already an integer (bigger than largest integer)
+// p11 ==> Input is not a large integer
+// p12 ==> Input is a smaller integer
+// p13 ==> Input is not an even integer, so inexact must be set
 
-fXInt      = f9
-fNormX     = f10
-fTmp       = f11
-fAdj       = f12
-fPreResult = f13
 
-// predicate registers used:
-// p6 - p9
+// floating-point registers used: 
+
+FLOOR_NORM_f8      = f9                        
+FLOOR_FFFF         = f10 
+FLOOR_INEXACT      = f11 
+FLOOR_FLOAT_INT_f8 = f12
+FLOOR_INT_f8       = f13
+FLOOR_adj          = f14
 
 // Overview of operation
 //==============================================================
+
 // double floor(double x)
-// Return an integer value (represented as a double) that is the largest
+// Return an integer value (represented as a double) that is the largest 
 // value not greater than x
 // This is x rounded toward -infinity to an integral value.
 // Inexact is set if x != floor(x)
-//==============================================================
+// **************************************************************************
+
+// Set denormal flag for denormal input and
+// and take denormal fault if necessary.
+
+// Is the input an integer value already?
 
 // double_extended
 // if the exponent is > 1003e => 3F(true) = 63(decimal)
@@ -102,115 +120,121 @@ fPreResult = f13
 // If we multiply by 2^23, we no longer have a fractional part
 // So input is an integer value already.
 
+// If x is NAN, ZERO, or INFINITY, then  return
 
-.section .text
-GLOBAL_IEEE754_ENTRY(floor)
+// qnan snan inf norm     unorm 0 -+
+// 1    1    1   0        0     1 11     0xe7
+
+#include "libm_support.h"
+
+floor:
+#ifdef _LIBC
+.global __floor
+__floor:
+#endif
 
 { .mfi
-      getf.exp         rSignexp  = f8        // Get signexp, recompute if unorm
-      fclass.m         p7,p0 = f8, 0x0b      // Test x unorm
-      addl             rBigexp = 0x10033, r0 // Set exponent at which is integer
+      getf.exp floor_GR_signexp  = f8
+      fcvt.fx.trunc.s1     FLOOR_INT_f8  = f8
+      addl        floor_GR_bigexp = 0x10033, r0
 }
 { .mfi
-      mov              rM1 = -1              // Set all ones
-      fcvt.fx.trunc.s1 fXInt  = f8           // Convert to int in significand
-      mov              rExpMask    = 0x1FFFF // Form exponent mask
+      addl        floor_GR_FFFF      = -1,r0
+      fcmp.lt.s1  p8,p9 = f8,f0
+      mov         floor_GR_expmask    = 0x1FFFF ;;
 }
-;;
 
+// p7 ==> denorm
 { .mfi
-      nop.m            0
-      fcmp.lt.s1       p8,p9 = f8, f0        // Test x < 0
-      nop.i            0
+      setf.sig    FLOOR_FFFF  = floor_GR_FFFF
+      fclass.m    p7,p0 = f8, 0x0b
+      nop.i 999
 }
-{ .mfb
-      setf.sig         fTmp = rM1            // Make const for setting inexact
-      fnorm.s1         fNormX  = f8          // Normalize input
-(p7)  br.cond.spnt     FLOOR_UNORM           // Branch if x unorm
+{ .mfi
+      nop.m 999
+      fnorm.s1           FLOOR_NORM_f8  = f8
+      nop.i 999 ;;
 }
-;;
 
-FLOOR_COMMON:
-// Return here from FLOOR_UNORM
-{ .mfi
-      nop.m            0
-      fclass.m         p6,p0 = f8, 0x1e7     // Test x natval, nan, inf, 0
-      nop.i            0
+// p6 ==> NAN, INF, ZERO
+{ .mfb
+      nop.m 999
+      fclass.m      p6,p10 = f8, 0xe7
+(p7)  br.cond.spnt  L(FLOOR_DENORM) ;;
 }
-;;
 
+L(FLOOR_COMMON):
 .pred.rel "mutex",p8,p9
+// Set adjustment to subtract from trunc(x) for result
+//   If x<0,  adjustment is -1.0
+//   If x>=0, adjustment is 0.0
 { .mfi
-      nop.m            0
-(p8)  fnma.s1          fAdj = f1, f1, f0     // If x < 0, adjustment is -1
-      nop.i            0
+      and      floor_GR_exponent = floor_GR_signexp, floor_GR_expmask
+(p8)  fnma.s1  FLOOR_adj = f1,f1,f0
+      nop.i 999
 }
 { .mfi
-      nop.m            0
-(p9)  fma.s1           fAdj = f0, f0, f0     // If x > 0, adjustment is 0
-      nop.i            0
+      nop.m 999
+(p9)  fadd.s1  FLOOR_adj = f0,f0
+      nop.i 999 ;;
 }
-;;
 
 { .mfi
-      nop.m            0
-      fcvt.xf          fPreResult = fXInt    // trunc(x)
-      nop.i            0
+      nop.m 999
+      fcmp.eq.s0  p12,p0 = f8,f0 // Dummy op to set denormal and invalid flag
+      nop.i 999
 }
-{ .mfb
-      nop.m            0
-(p6)  fma.d.s0         f8 = f8, f1, f0       // Result if x natval, nan, inf, 0
-(p6)  br.ret.spnt      b0                    // Exit if x natval, nan, inf, 0
+{ .mfi
+(p10) cmp.ge.unc    p10,p11 = floor_GR_exponent, floor_GR_bigexp
+(p6)  fnorm.d f8 = f8
+      nop.i 999 ;;
 }
-;;
 
-{ .mmi
-      and              rExp = rSignexp, rExpMask // Get biased exponent
-;;
-      cmp.ge           p7,p6 = rExp, rBigexp  // Is |x| >= 2^52?
-      nop.i            0
+{ .mfi
+      nop.m 999
+(p11) fcvt.xf         FLOOR_FLOAT_INT_f8   = FLOOR_INT_f8
+      nop.i 999 ;;
 }
-;;
 
 { .mfi
-      nop.m            0
-(p6)  fma.d.s0         f8 = fPreResult, f1, fAdj // Result if !int, |x| < 2^52
-      nop.i            0
+      nop.m 999
+(p10) fnorm.d f8 = FLOOR_NORM_f8
+      nop.i 999 ;;
 }
+
+
 { .mfi
-      nop.m            0
-(p7)  fma.d.s0         f8 = fNormX, f1, f0    // Result, if |x| >= 2^52
-      nop.i            0
+      nop.m 999
+(p11) fadd.d   f8 = FLOOR_FLOAT_INT_f8,FLOOR_adj
+      nop.i 999 ;;
 }
-;;
 
 { .mfi
-      nop.m            0
-(p6)  fcmp.eq.unc.s1   p8, p9 = fPreResult, fNormX // Is trunc(x) = x ?
-      nop.i            0
+      nop.m 999
+(p11) fcmp.eq.unc.s1  p12,p13  = FLOOR_FLOAT_INT_f8, FLOOR_NORM_f8
+      nop.i 999 ;;
 }
-;;
 
+// Set inexact if result not equal to input
 { .mfi
-      nop.m            0
-(p9)  fmpy.s0          fTmp = fTmp, fTmp      // Dummy to set inexact
-      nop.i            0
+      nop.m 999
+(p13) fmpy.s0     FLOOR_INEXACT = FLOOR_FFFF,FLOOR_FFFF
+      nop.i 999
 }
+// Set result to input if integer
 { .mfb
-      nop.m            0
-(p8)  fma.d.s0         f8 = fNormX, f1, f0    // If x int, result normalized x
-      br.ret.sptk      b0                     // Exit main path, 0 < |x| < 2^52
+      nop.m 999
+(p12) fnorm.d f8 = FLOOR_NORM_f8
+      br.ret.sptk    b0 ;;
 }
-;;
-
 
-FLOOR_UNORM:
-// Here if x unorm
+// Here if input denorm
+L(FLOOR_DENORM):
 { .mfb
-      getf.exp         rSignexp  = fNormX     // Get signexp, recompute if unorm
-      fcmp.eq.s0       p7,p0 = f8, f0         // Dummy op to set denormal flag
-      br.cond.sptk     FLOOR_COMMON           // Return to main path
+      getf.exp floor_GR_signexp  = FLOOR_NORM_f8
+      fcvt.fx.trunc.s1     FLOOR_INT_f8  = FLOOR_NORM_f8
+      br.cond.sptk  L(FLOOR_COMMON) ;;
 }
-;;
 
-GLOBAL_IEEE754_END(floor)
+.endp floor
+ASM_SIZE_DIRECTIVE(floor)