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, 133 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/x86_64/fpu/math_private.h b/REORG.TODO/sysdeps/x86_64/fpu/math_private.h
new file mode 100644
index 0000000000..027a6a3a4d
--- /dev/null
+++ b/REORG.TODO/sysdeps/x86_64/fpu/math_private.h
@@ -0,0 +1,133 @@
+#ifndef X86_64_MATH_PRIVATE_H
+#define X86_64_MATH_PRIVATE_H 1
+
+/* We can do a few things better on x86-64.  */
+
+#if defined __AVX__ || defined SSE2AVX
+# define MOVD "vmovd"
+# define MOVQ "vmovq"
+#else
+# define MOVD "movd"
+# define MOVQ "movq"
+#endif
+
+/* Direct movement of float into integer register.  */
+#define EXTRACT_WORDS64(i, d)						      \
+  do {									      \
+    int64_t i_;								      \
+    asm (MOVQ " %1, %0" : "=rm" (i_) : "x" ((double) (d)));		      \
+    (i) = i_;								      \
+  } while (0)
+
+/* And the reverse.  */
+#define INSERT_WORDS64(d, i) \
+  do {									      \
+    int64_t i_ = i;							      \
+    double d__;								      \
+    asm (MOVQ " %1, %0" : "=x" (d__) : "rm" (i_));			      \
+    d = d__;								      \
+  } while (0)
+
+/* Direct movement of float into integer register.  */
+#define GET_FLOAT_WORD(i, d) \
+  do {									      \
+    int i_;								      \
+    asm (MOVD " %1, %0" : "=rm" (i_) : "x" ((float) (d)));		      \
+    (i) = i_;								      \
+  } while (0)
+
+/* And the reverse.  */
+#define SET_FLOAT_WORD(f, i) \
+  do {									      \
+    int i_ = i;								      \
+    float f__;								      \
+    asm (MOVD " %1, %0" : "=x" (f__) : "rm" (i_));			      \
+    f = f__;								      \
+  } while (0)
+
+#include <sysdeps/i386/fpu/fenv_private.h>
+#include_next <math_private.h>
+
+extern __always_inline double
+__ieee754_sqrt (double d)
+{
+  double res;
+#if defined __AVX__ || defined SSE2AVX
+  asm ("vsqrtsd %1, %0, %0" : "=x" (res) : "xm" (d));
+#else
+  asm ("sqrtsd %1, %0" : "=x" (res) : "xm" (d));
+#endif
+  return res;
+}
+
+extern __always_inline float
+__ieee754_sqrtf (float d)
+{
+  float res;
+#if defined __AVX__ || defined SSE2AVX
+  asm ("vsqrtss %1, %0, %0" : "=x" (res) : "xm" (d));
+#else
+  asm ("sqrtss %1, %0" : "=x" (res) : "xm" (d));
+#endif
+  return res;
+}
+
+extern __always_inline long double
+__ieee754_sqrtl (long double d)
+{
+  long double res;
+  asm ("fsqrt" : "=t" (res) : "0" (d));
+  return res;
+}
+
+#ifdef __SSE4_1__
+extern __always_inline double
+__rint (double d)
+{
+  double res;
+# if defined __AVX__ || defined SSE2AVX
+  asm ("vroundsd $4, %1, %0, %0" : "=x" (res) : "xm" (d));
+# else
+  asm ("roundsd $4, %1, %0" : "=x" (res) : "xm" (d));
+# endif
+  return res;
+}
+
+extern __always_inline float
+__rintf (float d)
+{
+  float res;
+# if defined __AVX__ || defined SSE2AVX
+  asm ("vroundss $4, %1, %0, %0" : "=x" (res) : "xm" (d));
+# else
+  asm ("roundss $4, %1, %0" : "=x" (res) : "xm" (d));
+# endif
+  return res;
+}
+
+extern __always_inline double
+__floor (double d)
+{
+  double res;
+# if defined __AVX__ || defined SSE2AVX
+  asm ("vroundsd $1, %1, %0, %0" : "=x" (res) : "xm" (d));
+# else
+  asm ("roundsd $1, %1, %0" : "=x" (res) : "xm" (d));
+# endif
+  return res;
+}
+
+extern __always_inline float
+__floorf (float d)
+{
+  float res;
+# if defined __AVX__ || defined SSE2AVX
+  asm ("vroundss $1, %1, %0, %0" : "=x" (res) : "xm" (d));
+# else
+  asm ("roundss $1, %1, %0" : "=x" (res) : "xm" (d));
+#  endif
+  return res;
+}
+#endif /* __SSE4_1__ */
+
+#endif /* X86_64_MATH_PRIVATE_H */