Chris Lattner b6a67a9068 Step #2 to improve trip count analysis for loops like this: ... void f(int* begin, int* end) { std::fill(begin, end, 0); } which turns into a != exit expression where one pointer is strided and (thanks to step #1) known to not overflow, and the other is loop invariant. The observation here is that, though the IV is strided by 4 in this case, that the IV *has* to become equal to the end value. It cannot "miss" the end value by stepping over it, because if it did, the strided IV expression would eventually wrap around. Handle this by turning A != B into "A-B != 0" where the A-B part is known to be NUW. llvm-svn: 123131		2011-01-09 22:26:35 +00:00
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Analysis	Step #2 to improve trip count analysis for loops like this:	2011-01-09 22:26:35 +00:00
Archive	MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> via an out parm.	2010-12-16 03:29:14 +00:00
AsmParser	First step in fixing PR8927:	2011-01-08 16:42:36 +00:00
Bitcode	First step in fixing PR8927:	2011-01-08 16:42:36 +00:00
CodeGen	Remove MachineRegisterInfo::getLastVirtReg(), it was giving wrong results	2011-01-09 21:58:20 +00:00
CompilerDriver	Support/PathV1: Deprecate get{Basename,Dirname,Suffix}.	2010-12-18 22:23:07 +00:00
ExecutionEngine	Remove unneeded zero arrays.	2010-12-04 15:28:22 +00:00
Linker	Revamp the ValueMapper interfaces in a couple ways:	2011-01-08 08:15:20 +00:00
MC	Fix PR8878.	2011-01-01 19:05:35 +00:00
Object	Fix mismatched new[]/delete.	2010-12-17 09:56:50 +00:00
Support	Fixed parsing of hex floats.	2011-01-06 16:55:14 +00:00
Target	Teach TargetRegisterInfo how to cram stack slot indexes in with the virtual and	2011-01-09 21:17:37 +00:00
Transforms	fix a few old bugs (found by inspection) where we would zap instructions	2011-01-09 19:26:10 +00:00
VMCore	make domtree verification print something useful on failure.	2011-01-08 19:55:55 +00:00
Makefile	Add LLVMObject Library.	2010-11-15 03:21:41 +00:00