+2013-04-02 Siddhesh Poyarekar <siddhesh@redhat.com>
+
+ * benchtests/Makefile: Add benchmarks for slowpow and slowexp.
+ (bench): Add slowexp and slowpow.
+ (exp-ITER): Increase iterations.
+ (pow-ITER): Likewise.
+ * benchtests/exp-inputs: Change input.
+ * benchtests/pow-inputs: Likewise.
+ * benchtests/slowexp-inputs: New file.
+ * benchtests/slowexp.c: New file.
+ * benchtests/slowpow-inputs: New file.
+ * benchtests/slowpow.c: New file.
+
2013-04-02 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
* sysdeps/powerpc/powerpc32/fpu/s_rint.S: Remove branch prediction
# - Define foo-ITER with the number of iterations you want to run. Keep it
# high enough that the overhead of clock_gettime is only a small fraction of
-# the total run time of the test.
+# the total run time of the test. A good idea would be to keep the run time
+# of each test at around 10 seconds for x86_64. That is just a guideline,
+# since some scenarios may require higher run times.
# - Define foo-ARGLIST as a colon separated list of types of the input
# arguments. Use `void` if function does not take any inputs. Put in quotes
# See pow-inputs for an example.
subdir := benchtests
-bench := exp pow rint
+bench := exp pow rint slowexp slowpow
-exp-ITER = 100000
+# exp function fast path
+exp-ITER = 5e8
exp-ARGLIST = double
exp-RET = double
LDFLAGS-bench-exp = -lm
-pow-ITER = 100000
+# pow function fast path
+pow-ITER = 2e8
pow-ARGLIST = double:double
pow-RET = double
LDFLAGS-bench-pow = -lm
rint-RET = double
LDFLAGS-bench-rint = -lm
+# exp function slowest path
+slowexp-ITER = 3e5
+slowexp-ARGLIST = double
+slowexp-RET = double
+slowexp-INCLUDE = slowexp.c
+LDFLAGS-bench-slowexp = -lm
+
+# pow function slowest path
+slowpow-ITER = 1e5
+slowpow-ARGLIST = double:double
+slowpow-RET = double
+slowpow-INCLUDE = slowpow.c
+LDFLAGS-bench-slowpow = -lm
+
include ../Makeconfig
include ../Rules
-708.00096423260981737257679924368858
+42
-1.0000000000000020, 1.5
+42.0, 42.0
--- /dev/null
+708.00096423260981737257679924368858
--- /dev/null
+/* Define slowexp.
+ Copyright (C) 2013 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define slowexp exp
--- /dev/null
+1.0000000000000020, 1.5
--- /dev/null
+/* Define slowpow.
+ Copyright (C) 2013 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define slowpow pow