b66a892358
A slice uses less memory than a NodeList, and has better memory locality when walking the list. This uncovered a tricky case involving closures: the escape analysis pass when run on a closure was appending to the Dcl list of the OCLOSURE rather than the ODCLFUNC. This happened to work because they shared the same NodeList. Fixed with a change to addrescapes, and a check to Tempname to catch any recurrences. This removes the last use of the listsort function outside of tests. I'll send a separate CL to remove it. Unfortunately, while this passes all tests, it does not pass toolstash -cmp. The problem is that cmpstackvarlt does not fully determine the sort order, and the change from listsort to sort.Sort, while generally desirable, produces a different ordering. I could stage this by first making cmpstackvarlt fully determined, but no matter what toolstash -cmp is going to break at some point. In my casual testing the compiler is 2.2% faster. Update #14473. Change-Id: I367d66daa4ec73ed95c14c66ccda3a2133ad95d5 Reviewed-on: https://go-review.googlesource.com/19919 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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