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corporate slide deck - Bitly
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May 31, 2018 - these two approaches on modern hardware. [note] could not find any way for C++ Google benchmark to have n
Runtime vs. compile time (JIT vs AOT) optimizations in Java and C++ Ionuţ Baloşin Software Architect www.ionutbalosin.com @ionutbalosin
Riga, 29-31 May 2018 www.ionutbalosin.com
Copyright © 2018 by Ionuţ Baloşin
@ionutbalosin
About Me
Ionuţ Baloşin Software Architect
Technical Trainer • Java Performance and Tuning • Software Architecture www.ionutbalosin.com @ionutbalosin
www.ionutbalosin.com
@ionutbalosin
Agenda Sequential sum of N elements array (
Sequential sum of N integers (
𝑁 𝑖=1 𝑎𝑟𝑟𝑎𝑦[𝑖])
𝑁 𝑖=1 𝑖)
Fields Layout Null Checks Lock Elision Virtual Calls Scalar Replacement Conclusions www.ionutbalosin.com
@ionutbalosin
Disclaimer lock add DWORD PTR [rsp],0x0 cmp QWORD PTR [r10+0x46],0x0 jne 0x00007f92409afe9a mov rax,0x0 lock cmpxchg QWORD PTR [r10+0x16],r15 jne 0x00007f92409afe9a or eax,0x1 jmp 0x00007f92409afeaa test eax,0x0 jmp 0x00007f92409afeaa mov r10,QWORD PTR [rax] lock cmpxchg QWORD PTR [rbp+0x0],r10 jne 0x00007f92409afecd mov eax,0xc6 mov rdi, qword ptr [rip + (anonymous namespace)::rectangle] mov rax, qword ptr [rip + (anonymous namespace)::param] mov esi, dword ptr [rax] mov rax, qword ptr [rdi] call qword ptr [rax + 16] ; e.g. compute() virtual call mov ebp, eax ; ebp
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