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Userland: static vs non-static constexpr variables

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Problem:
- `static` variables consume memory and sometimes are less
  optimizable.
- `static const` variables can be `constexpr`, usually.
- `static` function-local variables require an initialization check
  every time the function is run.

Solution:
- If a global `static` variable is only used in a single function then
  move it into the function and make it non-`static` and `constexpr`.
- Make all global `static` variables `constexpr` instead of `const`.
- Change function-local `static const[expr]` variables to be just
  `constexpr`.
This commit is contained in:
Lenny Maiorani 2021-05-19 09:32:07 -06:00 • committed by Linus Groh
commit 800ea8ea96
Notes: sideshowbarker 2024-07-18 17:38:29 +09:00
38 changed files with 192 additions and 184 deletions
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2
Userland/Libraries/LibJS/Runtime/Value.cpp
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@ -37,7 +37,7 @@
namespace JS {
// Used in various abstract operations to make it obvious when a non-optional return value must be discarded.
static const double INVALID { 0 };
static constexpr double INVALID { 0 };
static inline bool same_type_for_equality(const Value& lhs, const Value& rhs)
{