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Title: astutils.h: reserve `std::vector` space in `visitAstNodes()` to avoid excess allocations by firewave · Pull Request #4158 · cppcheck-opensource/cppcheck · GitHub

Open Graph Title: astutils.h: reserve `std::vector` space in `visitAstNodes()` to avoid excess allocations by firewave · Pull Request #4158 · cppcheck-opensource/cppcheck

X Title: astutils.h: reserve `std::vector` space in `visitAstNodes()` to avoid excess allocations by firewave · Pull Request #4158 · cppcheck-opensource/cppcheck

Description: This is an intermediate solution until SmallVector is able to avoid these allocation when not utilizing Boost. As it already provides a sizable improvement without the need for any external dependency I decided to go with this for now. Testing an -O2 build with --enable=all --inconclusive on mame_regtest code (with some additional local speed hacks applied): GCC 11 37,875,483,481 -> 33,842,501,109 Clang 13 35,459,791,724 -> 28,694,901,787

Open Graph Description: This is an intermediate solution until SmallVector is able to avoid these allocation when not utilizing Boost. As it already provides a sizable improvement without the need for any external depende...

X Description: This is an intermediate solution until SmallVector is able to avoid these allocation when not utilizing Boost. As it already provides a sizable improvement without the need for any external depende...

Opengraph URL: https://github.com/cppcheck-opensource/cppcheck/pull/4158

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249a99d astutils.h: reserve `std::vector` space in `visitAstNodes()` to avoid… firewave May 31, 2022 https://github.com/cppcheck-opensource/cppcheck/pull/4158/commits/249a99dda70a8caf4c70b76155a16d05a3410206
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