Chris Lattner
2f9b661ab8
Add a minor optimization: if we haven't changed the operands of an
...
add, there is no need to scan the world to find the same add again.
This invalidates the previous testcase, which wasn't wonderful anyway,
because it needed a run of instcombine to permute the use-lists in
just the right way to before GVN was run (so it was really fragile).
Not a big loss.
llvm-svn: 90973
2009-12-09 17:27:45 +00:00
Chris Lattner
e05f9a128c
fix PR5733, a case where we'd replace an add with a lexically identical
...
binary operator that wasn't an add. In this case, a xor. Whoops.
llvm-svn: 90971
2009-12-09 17:18:49 +00:00
Chris Lattner
9c2474e272
fix a nasty variable that was shadowing the real CurBB but with the wrong value.
...
llvm-svn: 90920
2009-12-09 01:19:16 +00:00
Chris Lattner
3211af28ba
fix many input tracking bugs.
...
llvm-svn: 90915
2009-12-09 00:56:14 +00:00
Chris Lattner
c457aaea0d
fix PHI translation to take the PHI out of the instinputs set and add
...
the translated value back to it if an instruction.
llvm-svn: 90909
2009-12-09 00:18:13 +00:00
Chris Lattner
b0d20540ad
instructions defined in CurBB may be intermediate nodes of the computation.
...
llvm-svn: 90908
2009-12-09 00:10:55 +00:00
Chris Lattner
83cb0b1450
add dumping and sanity checking support.
...
llvm-svn: 90906
2009-12-09 00:01:00 +00:00
Chris Lattner
604cebbfc1
make sure that PHITransAddr keeps its 'InstInputs' list up to
...
date when instsimplify kicks in.
llvm-svn: 90901
2009-12-08 23:42:51 +00:00
Chris Lattner
8cc673c6a0
fix a typo (and -> add) and fix GetAvailablePHITranslatedSubExpr to not
...
side-effect the current object.
llvm-svn: 90837
2009-12-08 06:06:26 +00:00
Chris Lattner
3d338590d6
fix typo
...
llvm-svn: 90793
2009-12-07 19:52:57 +00:00
Chris Lattner
9ed7e3ffb9
add accessor, improve comment.
...
llvm-svn: 90792
2009-12-07 19:45:30 +00:00
Chris Lattner
233d9bf82d
add support for phi translation and incorpation of new expression.
...
llvm-svn: 90782
2009-12-07 19:04:49 +00:00
Chris Lattner
0a810a827f
checkpoint of the new PHITransAddr code, still not done and not used by
...
anything.
llvm-svn: 90779
2009-12-07 18:36:53 +00:00
Chris Lattner
167f1dc040
add the start of a class used to handle phi translation in memdep and
...
gvn (this is just a skeleton so far). This will ultimately be used
to fix a nasty miscompilation with GVN.
llvm-svn: 90518
2009-12-04 02:10:16 +00:00
