bb5974e0cb
This CL optimizes open-coded defers in two ways: 1. It modifies local variable sorting to place all open-coded defer closure slots in order, so that rather than requiring the metadata to contain each offset individually, we just need a single offset to the first slot. 2. Because the slots are in ascending order and can be directly indexed, we can get rid of the count of how many defers are in the frame. Instead, we just find the top set bit in the active defers bitmask, and load the corresponding closure. Change-Id: I6f912295a492211023a9efe12c94a14f449d86ad Reviewed-on: https://go-review.googlesource.com/c/go/+/516199 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> |
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