Chris Lattner f4f5a77fdc Two changes: ... 1. Implement InstCombine/deadcode.ll by not adding instructions in unreachable blocks (due to constants in conditional branches/switches) to the worklist. This causes them to be deleted before instcombine starts up, leading to better optimization. 2. In the prepass over instructions, do trivial constprop/dce as we go. This has the effect of improving the effectiveness of #1. In addition, it *significantly* speeds up instcombine on test cases with large amounts of constant folding code (for example, that produced by code specialization or partial evaluation). In one example, it speeds up instcombine from 0.0589s to 0.0224s with a release build (a 2.6x speedup). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28215 91177308-0d34-0410-b5e6-96231b3b80d8		2006-05-10 19:00:36 +00:00
..
Hello	Remove trailing whitespace	2005-04-21 23:48:37 +00:00
Instrumentation	Add explicit #includes of <iostream>	2006-01-22 22:53:01 +00:00
IPO	linear -> constant time	2006-04-13 13:43:31 +00:00
Scalar	Two changes:	2006-05-10 19:00:36 +00:00
Utils	Patch to make some xforms preserve each other. Patch contributed by	2006-05-09 04:13:41 +00:00
ExprTypeConvert.cpp	Add explicit #includes of <iostream>	2006-01-22 22:53:01 +00:00
LevelRaise.cpp	Make iostream #inclusion explicit	2006-01-22 23:32:06 +00:00
Makefile	DONT_BUILD_RELINKED is gone and implied by BUILD_ARCHIVE now	2005-10-24 02:26:13 +00:00
TransformInternals.cpp	Remove dead #include	2005-10-29 04:41:30 +00:00
TransformInternals.h	ConvertibleToGEP always returns 0, remove some old crufty code which	2005-07-26 16:38:28 +00:00