4 Commits

Author SHA1 Message Date
Evan Cheng
e156f611ab - If the reaching definition is an undef and the use is a PHI, add the implicit_def to the end of the source block.
- When reaching value is replaced with another, update the cache as well.

llvm-svn: 90501
2009-12-04 00:09:05 +00:00
Evan Cheng
b2c1529d8f Handle undef values properly.
llvm-svn: 90489
2009-12-03 21:51:55 +00:00
Evan Cheng
7145382389 Fill out codegen SSA updater. It's not yet tested.
llvm-svn: 90395
2009-12-03 02:31:43 +00:00
Evan Cheng
20e9d030c9 Skeleton for MachineInstr level SSA updater.
llvm-svn: 90353
2009-12-02 22:02:52 +00:00