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| author | Siddhesh Poyarekar <siddhesh@redhat.com> | 2013-05-17 19:10:33 +0530 |
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| committer | Siddhesh Poyarekar <siddhesh@redhat.com> | 2013-05-17 19:10:33 +0530 |
| commit | 48a18de1e1e7dfeab6d034765caaf732b53cfcb7 (patch) | |
| tree | 1710f87c334a2d5cc79c30f9262212697eb814ef /ChangeLog | |
| parent | 13d3b41a36c4f28d171a144f8a9baad3a8835981 (diff) | |
| download | glibc-48a18de1e1e7dfeab6d034765caaf732b53cfcb7.tar.gz glibc-48a18de1e1e7dfeab6d034765caaf732b53cfcb7.tar.xz glibc-48a18de1e1e7dfeab6d034765caaf732b53cfcb7.zip | |
Prevent optimizing out of benchmark function call
Resolves: #15424 The compiler would optimize the benchmark function call out of the loop and call it only once, resulting in blazingly fast times for some benchmarks (notably atan, sin and cos). Mark the inputs as volatile so that the code is forced to read again from the input for each iteration.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 78d4804885..58b87d4bc3 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2013-05-17 Siddhesh Poyarekar <siddhesh@redhat.com> + + [BZ #15424] + * benchtests/bench-modf.c (struct args): Mark arg0 as + volatile. + * scripts/bench.pl: Mark members of struct args as volatile. + 2013-05-17 Adhemerval Zanella <azanella@linux.vnet.ibm.com> * sysdeps/powerpc/fpu/e_hypot.c (GET_TWO_FLOAT_WORD): Fix test for |