[PATCH] D65128: [Logging] Replace Log::Printf with LLDB_LOG macro (NFC)

Pavel Labath via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jul 24 23:00:54 PDT 2019


labath added inline comments.


================
Comment at: lldb/source/Expression/IRExecutionUnit.cpp:601
 
   if (log) {
+    LLDB_LOGF(log,
----------------
jingham wrote:
> labath wrote:
> > looks like there are some `if(log)`s still remaining. Maybe the `{}` around the printf confused your vim macro?
> There will always be some "if (log)" statements.  Whenever consing up the log message involves work, you should always say:
> 
> if (log) {
>    /// Do expensive work
>    LLDB_LOG...
> }
> 
> Not saying that all the remaining "if (logs)" are for that reason, but then intent is NOT to remove all such statements as they serve a useful purpose.
I'm fine with `if(log)`s staying if they serve a purpose (or even if they're hard to remove in this patch). However, I would expect that with LLDB_LOG, they become much less frequently needed, because the formatter is much more powerful (e.g., there is no need to write a for loop just to print an array, etc.)


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D65128/new/

https://reviews.llvm.org/D65128





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