Commit Graph

304 Commits

Author SHA1 Message Date
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