I have been testing the C++ streamer with a collection of 6,576
C test cases taken from the GCC testsuite.
These C programs build fine with g++, so I encapsulated them inside a
single header file and created a .cc file that simply #includes it.
The intent is to make sure we can PPH generate and read a single
header file.
Before this patch, we were failing to build about 1,800 test cases.
Most of those failures were due to the streamer reading an LTO tag for
a language-specific code and confusing it with a decl reference. This
was happening because LTO tag codes were overlapping with language
specific tree codes.
With this patch the number of failures goes from 1,800 to 146.
I will be adding a .exp file to the testsuite in a future patch.
Right now, I'm testing this from a shell script.
Tested on x86_64. Committed to the branch.
Diego.
ChangeLog.pph
2011-04-26 Diego Novillo <dnovi...@google.com>
* lto-streamer.h (enum LTO_tags): Change LTO_bb0 to begin
after MAX_TREE_CODES.
diff --git a/gcc/lto-streamer.h b/gcc/lto-streamer.h
index 8d5b1d2..b6f4b79 100644
--- a/gcc/lto-streamer.h
+++ b/gcc/lto-streamer.h
@@ -268,7 +268,7 @@ enum LTO_tags
Conversely, to map between LTO tags and tree/gimple codes, the
reverse operation must be applied. */
- LTO_bb0 = 1 + NUM_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE,
+ LTO_bb0 = 1 + MAX_TREE_CODES + LAST_AND_UNUSED_GIMPLE_CODE,
LTO_bb1,
/* EH region holding the previous statement. */
--
This patch is available for review at http://codereview.appspot.com/4441070
