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replace --optimize-only with --optimize-funcs and --optimize-files

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Vern Paxson 2021-12-10 12:45:27 -08:00
parent aa91f72b34
commit 9069e744f9
8 changed files with 176 additions and 125 deletions
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12
src/script_opt/CPP/README.md
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@ -162,17 +162,7 @@ about associated expressions/statements, making them hard to puzzle out.
This could be fixed, but would add execution overhead in passing around
the necessary strings / `Location` objects.
* Subtle bugs can arise when compiling code that uses `@if` conditional
compilation. The compiled code will not directly use the wrong instance
of a script body (one that differs due to the `@if` conditional having a
different resolution at compile time versus later run-time). However, if
compiled code itself calls a function that has conditional code, the
compiled code will always call the version of the function present during
compilation, rather than the run-time version. This problem can be fixed
at the cost of making all function calls more expensive (perhaps a measure
that requires an explicit flag to activate); or, when possible, by modifying
the conditional code to check the condition at run-time rather than at
compile-time.
* To avoid subtle bugs, the compiler will refrain from compiling script elements (functions, hooks, event handlers) that include conditional code. In addition, when using `--optimize-files` it will not compile any functions appearing in a source file that includes conditional code (even if it's not in a function body).
* Code compiled with `-O gen-standalone-C++` will not execute any global
statements when invoked using the "stand-in" script. The right fix for