Commit Graph

8 Commits

Author SHA1 Message Date
Evan Cheng
3a41ddb1b9 Watch out for duplicated PHI instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90816 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 23:11:03 +00:00
Evan Cheng
75eb535843 Pre-regalloc tale duplication. Work in progress.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90759 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 10:15:19 +00:00
Evan Cheng
7e572eb37f If BB is empty, insert PHI before end() instead of front().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90744 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 03:07:01 +00:00
Evan Cheng
9d0f8bba17 Don't try to be cute with undef optimization here. Let ProcessImplicitDefs handle it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90566 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 09:23:37 +00:00
Evan Cheng
2e65c29ac6 - 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90501 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04 00:09:05 +00:00
Evan Cheng
01306cad01 Handle undef values properly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90489 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 21:51:55 +00:00
Evan Cheng
229694f0ee Fill out codegen SSA updater. It's not yet tested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90395 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 02:31:43 +00:00
Evan Cheng
651ea5376c Skeleton for MachineInstr level SSA updater.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90353 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 22:02:52 +00:00