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257 Commits

Author SHA1 Message Date
Chris Lattner
d835aa6711 Remove unneeded #includes 
Move Passes.h (which defines the interface to this file) to the top.
Move statistics to the top of the file.
Add a comment

llvm-svn: 11034
 2004-01-31 21:07:15 +00:00
Alkis Evlogimenos
52a714b45b Make LiveVariables::HandlePhysRegUse and 
LiveVariables::HandlePhysRegDef private they use information that is
not in memory when LiveVariables finishes the analysis.

Also update the TwoAddressInstructionPass to not use this interface.

llvm-svn: 10755
 2004-01-11 09:18:45 +00:00
Chris Lattner
fc3d0598df fix warning 
llvm-svn: 10692
 2004-01-05 05:42:17 +00:00
Alkis Evlogimenos
08c5311729 Currently we cannot handle two-address instructions of the form: 
A = B op C where A == C, but this cannot really occur in practice
because of SSA form. Add an assert to check that just to be safe.

llvm-svn: 10682
 2004-01-05 02:25:45 +00:00
Alkis Evlogimenos
5e0e67173d Update description. 
llvm-svn: 10681
 2004-01-04 23:09:24 +00:00
Alkis Evlogimenos
7139090fd2 Remove TwoAddressInstruction from the public headers and add an ID 
instead, since this pass doesn't expose any state to its users.

llvm-svn: 10520
 2003-12-18 22:40:24 +00:00
Alkis Evlogimenos
725021cb6c Add TwoAddressInstructionPass to handle instructions that have two or 
more operands and the two first operands are constrained to be the
same. The pass takes an instruction of the form:

        a = b op c

and transforms it into:

        a = b
        a = a op c

and also preserves live variables.

llvm-svn: 10512
 2003-12-18 13:06:04 +00:00