[cfe-commits] r141073 - /cfe/trunk/lib/Driver/ToolChains.cpp

[Chandler Carruth]

Author: chandlerc
Date: Tue Oct  4 04:58:21 2011
New Revision: 141073

URL: http://llvm.org/viewvc/llvm-project?rev=141073&view=rev
Log:
Add a comment explaining that I have a better plan for implementing the
GCC installation search that requires fewer filesystem operations.
Planning to implement that next as the current approcah while thorough
(and so far looks correct) does a very unfortunate number of filesystem
operations.

I'm motivated to fix this in no small part because I would like to
support a much larger space of triples and GCC versions, which would
explode the current algorithm.

Modified:
    cfe/trunk/lib/Driver/ToolChains.cpp

Modified: cfe/trunk/lib/Driver/ToolChains.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains.cpp?rev=141073&r1=141072&r2=141073&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains.cpp Tue Oct  4 04:58:21 2011
@@ -1605,6 +1605,8 @@
     // accuracy, and architecture specificity in that order. The inverted walk
     // requires testing the filesystem more times than is ideal, but shouldn't
     // matter in practice as this is once on startup.
+    // FIXME: Instead of this, we should walk from the root down through each
+    // layer, and if it is "better" than prior installations found, use it.
     static const char* GccVersions[] = {
       "4.6.1", "4.6.0", "4.6",
       "4.5.3", "4.5.2", "4.5.1", "4.5",