4a63fad976c8cf3bcdc1bbc3927668164890ecb8 - toolchain/llvm-project

commit	4a63fad976c8cf3bcdc1bbc3927668164890ecb8	[log] [tgz]
author	Dan Gohman <gohman@apple.com>	Sat Aug 14 00:29:42 2010 +0000
committer	Dan Gohman <gohman@apple.com>	Sat Aug 14 00:29:42 2010 +0000
tree	e6591471e46231800e73582000d2b83f65c0e505
parent	a030fa529701850bc299a486b05e8f1bd4911ada [diff]

Teach SimplifyCFG how to simplify indirectbr instructions.
 - Eliminate redundant successors.
 - Convert an indirectbr with one successor into a direct branch.

Also, generalize SimplifyCFG to be able to be run on a function entry block.
It knows quite a few simplifications which are applicable to the entry
block, and it only needs a few checks to avoid trouble with the entry block.

llvm-svn: 111060

llvm/include/llvm/Transforms/Utils/Local.h[diff]
llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp[diff]
llvm/lib/Transforms/Utils/Local.cpp[diff]
llvm/lib/Transforms/Utils/SimplifyCFG.cpp[diff]
llvm/test/Transforms/SimplifyCFG/basictest.ll[diff]
llvm/test/Transforms/SimplifyCFG/indirectbr.ll[Added - diff]

6 files changed

tree: e6591471e46231800e73582000d2b83f65c0e505

clang/
compiler-rt/
libcxx/
lldb/
llvm/