Chris Lattner 54a1f9f9c1 do not bother reuniquing mdnodes whose operands drop to null. Doing ... so can be a huge performance issue when tearing down modules and mdnodes are not guaranteed to be unique anyway. This speeds up: $ time ~/llvm/Release/bin/clang gcc.c -w -S -g from 72 to 35s, where gcc.c is from: http://people.csail.mit.edu/smcc/projects/single-file-programs/ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92315 91177308-0d34-0410-b5e6-96231b3b80d8		2009-12-30 21:42:11 +00:00
..
Analysis	remove a bunch of unneeded functions.	2009-12-29 09:32:19 +00:00
Archive
AsmParser	remove some fixme's	2009-12-30 06:00:36 +00:00
Bitcode	Final step in the metadata API restructuring: move the	2009-12-29 09:01:33 +00:00
CodeGen	remove a bunch of unneeded functions.	2009-12-29 09:32:19 +00:00
CompilerDriver
ExecutionEngine
Linker	Remove dead store.	2009-12-28 01:54:15 +00:00
MC
Support	Implement edit distance for StringRef	2009-12-30 17:23:44 +00:00
System
Target	Replace a few more SmallVectors with arrays.	2009-12-29 16:57:26 +00:00
Transforms	Use an array instead of a SmallVector.	2009-12-29 11:04:52 +00:00
VMCore	do not bother reuniquing mdnodes whose operands drop to null. Doing	2009-12-30 21:42:11 +00:00
Makefile