Chris Lattner 6e7ba45460 This is a bulk commit that implements the following primary improvements: ... * We can now fold cast instructions into select instructions that have at least one constant operand. * We now optimize expressions more aggressively based on bits that are known to be zero. These optimizations occur a lot in code that uses bitfields even in simple ways. * We now turn more cast-cast sequences into AND instructions. Before we would only do this if it if all types were unsigned. Now only the middle type needs to be unsigned (guaranteeing a zero extend). * We transform sign extensions into zero extensions in several cases. This corresponds to these test/Regression/Transforms/InstCombine testcases: 2004-11-22-Missed-and-fold.ll and.ll: test28-29 cast.ll: test21-24 and-or-and.ll cast-cast-to-and.ll zeroext-and-reduce.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19220 91177308-0d34-0410-b5e6-96231b3b80d8		2005-01-01 16:22:27 +00:00
..
Analysis
Archive
AsmParser
Bytecode
CodeGen
Debugger
ExecutionEngine
Linker	Remove un-needed #includes.	2004-12-20 04:15:44 +00:00
Support
System
Target	Fix a FIXME: Select instructions on longs were miscompiled.	2005-01-01 16:10:12 +00:00
Transforms	This is a bulk commit that implements the following primary improvements:	2005-01-01 16:22:27 +00:00
VMCore	Allow getZeroExtend and getSignExtend to work with boolean inputs.	2005-01-01 15:59:57 +00:00
Makefile