Auto merge of #77687 - est31:hash_shorter_path, r=davidtwco
Use shorter path for std:#️⃣:Hash
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commit
fc3d8e3fcc
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@ -1861,7 +1861,7 @@ where
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}
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if *self == DUMMY_SP {
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std::hash::Hash::hash(&TAG_INVALID_SPAN, hasher);
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Hash::hash(&TAG_INVALID_SPAN, hasher);
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return;
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}
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@ -1872,28 +1872,28 @@ where
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let (file_lo, line_lo, col_lo) = match ctx.byte_pos_to_line_and_col(span.lo) {
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Some(pos) => pos,
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None => {
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std::hash::Hash::hash(&TAG_INVALID_SPAN, hasher);
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Hash::hash(&TAG_INVALID_SPAN, hasher);
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span.ctxt.hash_stable(ctx, hasher);
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return;
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}
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};
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if !file_lo.contains(span.hi) {
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std::hash::Hash::hash(&TAG_INVALID_SPAN, hasher);
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Hash::hash(&TAG_INVALID_SPAN, hasher);
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span.ctxt.hash_stable(ctx, hasher);
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return;
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}
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std::hash::Hash::hash(&TAG_VALID_SPAN, hasher);
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Hash::hash(&TAG_VALID_SPAN, hasher);
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// We truncate the stable ID hash and line and column numbers. The chances
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// of causing a collision this way should be minimal.
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std::hash::Hash::hash(&(file_lo.name_hash as u64), hasher);
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Hash::hash(&(file_lo.name_hash as u64), hasher);
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let col = (col_lo.0 as u64) & 0xFF;
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let line = ((line_lo as u64) & 0xFF_FF_FF) << 8;
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let len = ((span.hi - span.lo).0 as u64) << 32;
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let line_col_len = col | line | len;
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std::hash::Hash::hash(&line_col_len, hasher);
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Hash::hash(&line_col_len, hasher);
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span.ctxt.hash_stable(ctx, hasher);
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}
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}
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