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GetSourceLocation is frequently called to determine the location mappings between the original document and the generated code. The old implementation did a number of ToString and replace operations to simplify the math on tracking the position - which put it front and center in our performance measurements - about 25% of all execution time in a sampling profile of our perf test. The new code tracks position as code is written, and avoids allocations. After these changes GetSourceLocation doesn't show up in the profile. |
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| Microsoft.AspNet.Razor.Test | ||