llvm-mirror

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History

Vikram S. Adve 0b32273208 Significant changes to correctly spill CC registers and to correctly

handle conditional move instructions:
-- cpMem<->Reg functions now support CC registers (int and FP) correctly.
-- Scratch registers must be explicitly provided to cpMem<->Reg when
   needed, since CC regs need one to be copied to/from memory.
-- CC regs are saved to a scratch register instead of stack.
-- All regs used by a instruction are now recorded in MachineInstr::regsUsed,
   since regs used to save values *across* an instruction are not obvious
   either from the operands or from the LiveVar sets.
-- An (explicit or implicit) operand may now be both a def and a use.
   This is needed for conditional move operations.
   So an operand may need spill code both before and after the instruction.
-- class MachineCodeForBasicBlock is now an annotation on BasicBlock.

llvm-svn: 2833

2002-07-08 23:15:32 +00:00

InstrSched

A single MachineInstr operand may now be both a def and a use,

2002-07-08 22:59:23 +00:00

InstrSelection

Moved class MachineCodeForBasicBlock to MachineCodeForBasicBlock.h.

2002-07-08 23:03:10 +00:00

RegAlloc

Significant changes to correctly spill CC registers and to correctly

2002-07-08 23:15:32 +00:00

MachineBasicBlock.cpp

Implementation of class MachineCodeForBasicBlock.