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hashmap: remove inline from getIndex now that we have @branchHint

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David Rubin 2024-12-15 03:41:56 -08:00
parent b58916bb7c
commit 0fe17ea12a
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1 changed files with 4 additions and 8 deletions
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lib/std/hash_map.zig
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@ -1187,17 +1187,13 @@ pub fn HashMapUnmanaged(
}
/// Find the index containing the data for the given key.
/// Whether this function returns null is almost always
/// branched on after this function returns, and this function
/// returns null/not null from separate code paths. We
/// want the optimizer to remove that branch and instead directly
/// fuse the basic blocks after the branch to the basic blocks
/// from this function. To encourage that, this function is
/// marked as inline.
inline fn getIndex(self: Self, key: anytype, ctx: anytype) ?usize {
fn getIndex(self: Self, key: anytype, ctx: anytype) ?usize {
comptime verifyContext(@TypeOf(ctx), @TypeOf(key), K, Hash, false);
if (self.size == 0) {
// We use cold instead of unlikely to force a jump to this case,
// no matter the weight of the opposing side.
@branchHint(.cold);
return null;
}