Upgrade ARM-software/optimized-routines to v23.01

This project was upgraded with external_updater.
Usage: tools/external_updater/updater.sh update arm-optimized-routines
For more info, check https://cs.android.com/android/platform/superproject/+/master:tools/external_updater/README.md

Test: TreeHugger
Change-Id: I03de0ecb0ea89c2a77b1c411685af09fd480b63e

1 files changed, 84 insertions, 0 deletions

diff --git a/pl/math/sv_cos_2u5.c b/pl/math/sv_cos_2u5.c
new file mode 100644
index 0000000..1940348
--- /dev/null
+++ b/pl/math/sv_cos_2u5.c
@@ -0,0 +1,84 @@
+/*
+ * Double-precision SVE cos(x) function.
+ *
+ * Copyright (c) 2019-2023, Arm Limited.
+ * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
+ */
+
+#include "sv_math.h"
+#include "pl_sig.h"
+#include "pl_test.h"
+
+#if SV_SUPPORTED
+
+#define InvPio2 (sv_f64 (0x1.45f306dc9c882p-1))
+#define NegPio2_1 (sv_f64 (-0x1.921fb50000000p+0))
+#define NegPio2_2 (sv_f64 (-0x1.110b460000000p-26))
+#define NegPio2_3 (sv_f64 (-0x1.1a62633145c07p-54))
+/* Original shift used in Neon cos,
+   plus a contribution to set the bit #0 of q
+   as expected by trigonometric instructions.  */
+#define Shift (sv_f64 (0x1.8000000000001p52))
+#define RangeVal (sv_f64 (0x1p23))
+#define AbsMask (0x7fffffffffffffff)
+
+static NOINLINE sv_f64_t
+__sv_cos_specialcase (sv_f64_t x, sv_f64_t y, svbool_t cmp)
+{
+  return sv_call_f64 (cos, x, y, cmp);
+}
+
+/* A fast SVE implementation of cos based on trigonometric
+   instructions (FTMAD, FTSSEL, FTSMUL).
+   Maximum measured error: 2.108 ULPs.
+   __sv_cos(0x1.9b0ba158c98f3p+7) got -0x1.fddd4c65c7f07p-3
+				 want -0x1.fddd4c65c7f05p-3.  */
+sv_f64_t
+__sv_cos_x (sv_f64_t x, const svbool_t pg)
+{
+  sv_f64_t n, r, r2, y;
+  svbool_t cmp;
+
+  r = sv_as_f64_u64 (svand_n_u64_x (pg, sv_as_u64_f64 (x), AbsMask));
+  cmp = svcmpge_u64 (pg, sv_as_u64_f64 (r), sv_as_u64_f64 (RangeVal));
+
+  /* n = rint(|x|/(pi/2)).  */
+  sv_f64_t q = sv_fma_f64_x (pg, InvPio2, r, Shift);
+  n = svsub_f64_x (pg, q, Shift);
+
+  /* r = |x| - n*(pi/2)  (range reduction into -pi/4 .. pi/4).  */
+  r = sv_fma_f64_x (pg, NegPio2_1, n, r);
+  r = sv_fma_f64_x (pg, NegPio2_2, n, r);
+  r = sv_fma_f64_x (pg, NegPio2_3, n, r);
+
+  /* cos(r) poly approx.  */
+  r2 = svtsmul_f64 (r, sv_as_u64_f64 (q));
+  y = sv_f64 (0.0);
+  y = svtmad_f64 (y, r2, 7);
+  y = svtmad_f64 (y, r2, 6);
+  y = svtmad_f64 (y, r2, 5);
+  y = svtmad_f64 (y, r2, 4);
+  y = svtmad_f64 (y, r2, 3);
+  y = svtmad_f64 (y, r2, 2);
+  y = svtmad_f64 (y, r2, 1);
+  y = svtmad_f64 (y, r2, 0);
+
+  /* Final multiplicative factor: 1.0 or x depending on bit #0 of q.  */
+  sv_f64_t f = svtssel_f64 (r, sv_as_u64_f64 (q));
+  /* Apply factor.  */
+  y = svmul_f64_x (pg, f, y);
+
+  /* No need to pass pg to specialcase here since cmp is a strict subset,
+     guaranteed by the cmpge above.  */
+  if (unlikely (svptest_any (pg, cmp)))
+    return __sv_cos_specialcase (x, y, cmp);
+  return y;
+}
+
+PL_ALIAS (__sv_cos_x, _ZGVsMxv_cos)
+
+PL_SIG (SV, D, 1, cos, -3.1, 3.1)
+PL_TEST_ULP (__sv_cos, 1.61)
+PL_TEST_INTERVAL (__sv_cos, 0, 0xffff0000, 10000)
+PL_TEST_INTERVAL (__sv_cos, 0x1p-4, 0x1p4, 500000)
+#endif