llvm-6502/lib/Transforms
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
Instrumentation
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
LevelRaise.cpp
Makefile
TransformInternals.cpp
TransformInternals.h