Alloc speed check reported timings seem problematic

[vkarak]

Using Clang 7 and -O0 I get negative timings:

==============================================================================
PERFORMANCE REPORT
------------------------------------------------------------------------------
AllocSpeedTest_no
- tresa:login
   - PrgEnv-clang
      * time: 0.441987 s
------------------------------------------------------------------------------
AllocSpeedTest_2M
   - PrgEnv-clang
      * time: -0.332334 s
------------------------------------------------------------------------------

Using -O3, I get zero seconds.

clang version 7.0.1 (tags/RELEASE_701/final)
Target: x86_64-apple-darwin18.5.0
Thread model: posix
InstalledDir: /usr/local/opt/llvm/bin

[toxa81]

It's because somebody changed the test. Originally there was malloc(). Malloc() doesn't touch the memory. Somebody changed it to new[], which touches the memory. So the whole test has become wrong

[teojgo]

@toxa81 Thanks for the response, will fix it so that it uses malloc.

[vkarak]

@toxa81 Thanks for the comment. You are right: new creates the objects as well. Original version here.

The changes were done due to my review; my bad.