Dan Gohman e8be6c6391 Add a new function, ReplaceAllUsesOfValuesWith, which handles bulk ... replacement of multiple values. This is slightly more efficient than doing multiple ReplaceAllUsesOfValueWith calls, and theoretically could be optimized even further. However, an important property of this new function is that it handles the case where the source value set and destination value set overlap. This makes it feasible for isel to use SelectNodeTo in many very common cases, which is advantageous because SelectNodeTo avoids a temporary node and it doesn't require CSEMap updates for users of values that don't change position. Revamp MorphNodeTo, which is what does all the work of SelectNodeTo, to handle operand lists more efficiently, and to correctly handle a number of corner cases to which its new wider use exposes it. This commit also includes a change to the encoding of post-isel opcodes in SDNodes; now instead of being sandwiched between the target-independent pre-isel opcodes and the target-dependent pre-isel opcodes, post-isel opcodes are now represented as negative values. This makes it possible to test if an opcode is pre-isel or post-isel without having to know the size of the current target's post-isel instruction set. These changes speed up llc overall by 3% and reduce memory usage by 10% on the InstructionCombining.cpp testcase with -fast and -regalloc=local. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53728 91177308-0d34-0410-b5e6-96231b3b80d8		2008-07-17 19:10:17 +00:00
..
Makefile
PIC16.h
PIC16.td
PIC16AsmPrinter.cpp	Unneeded include's.	2008-06-19 01:21:02 +00:00
PIC16CallingConv.td
PIC16ConstantPoolValue.cpp
PIC16ConstantPoolValue.h	Trim unnecessary #includes.	2008-07-11 20:38:31 +00:00
PIC16InstrFormats.td
PIC16InstrInfo.cpp
PIC16InstrInfo.h
PIC16InstrInfo.td
PIC16ISelDAGToDAG.cpp	Add a new function, ReplaceAllUsesOfValuesWith, which handles bulk	2008-07-17 19:10:17 +00:00
PIC16ISelLowering.cpp	Split ISD::LABEL into ISD::DBG_LABEL and ISD::EH_LABEL, eliminating	2008-07-01 00:05:16 +00:00
PIC16ISelLowering.h
PIC16RegisterInfo.cpp	Pool-allocation for MachineInstrs, MachineBasicBlocks, and	2008-07-07 23:14:23 +00:00
PIC16RegisterInfo.h
PIC16RegisterInfo.td
PIC16Subtarget.cpp
PIC16Subtarget.h
PIC16TargetAsmInfo.cpp
PIC16TargetAsmInfo.h
PIC16TargetMachine.cpp
PIC16TargetMachine.h