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55 Commits

Author SHA1 Message Date
Evan Cheng c1e4e3743b Allow copyRegToReg to emit cross register classes copies. 
Tested with "make check"!

llvm-svn: 42346
 2007-09-26 06:25:56 +00:00
Dan Gohman 9da02f5ee2 Remove isReg, isImm, and isMBB, and change all their users to use 
isRegister, isImmediate, and isMachineBasicBlock, which are equivalent,
and more popular.

llvm-svn: 41958
 2007-09-14 20:33:02 +00:00
Christopher Lamb e081928f49 Move isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs and add more debugging output there. 
llvm-svn: 41005
 2007-08-10 21:11:55 +00:00
Christopher Lamb 2e5fb9f71e Implement review feedback. No functionality change. 
llvm-svn: 40863
 2007-08-06 16:33:56 +00:00
Christopher Lamb e9d738cefc Add a MachineFunction pass, which runs post register allocation, that turns subreg insert/extract instruction into register copies. This ensures correct code gen if the coalescer isn't able to remove all subreg instructions. 
llvm-svn: 40521
 2007-07-26 08:18:32 +00:00