Instead of lazily initializing (with some platform exceptions, see the equivalent qsimd.cpp commit). The rationale is the same as for qCpuFeatures(): this the qHashBits() function is hot and the current code generation needs to save a lot of state because of the possible call to the C++ runtime functions to enable the thread-safe initialization of the hash seed. [ChangeLog][Important Behavior Changes] QtCore now initializes the QHash global seed before the main() function is run, so it is no longer possible to use qputenv() to affect the seed value for the current process. Disabling the random global seed for the current process should be done programmatically with by calling either the 6.2 function QHashSeed::setDeterministicGlobalSeed() or, if compatibility with Qt 5 is required, by calling qSetGlobalQHashSeed() with value 0. Change-Id: I54f205f6b7314351b078fffd16cf7eae93f9e27e Reviewed-by: Lars Knoll <lars.knoll@qt.io>