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Moved insertCallerSavingCode() to PhyRegAlloc and

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moved isRegVolatile and modifiedByCall here: they are all
machine independent.  Remove all uses of PhyRegAlloc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7387 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve 2003-07-29 19:41:23 +00:00
parent b403b2c019
commit ceb7d2f4f8
1 changed files with 22 additions and 19 deletions
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41
include/llvm/Target/TargetRegInfo.h
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@ -21,7 +21,6 @@ class Function;
class LiveRange;
class AddedInstrns;
class MachineInstr;
class PhyRegAlloc;
class BasicBlock;
///----------------------------------------------------------------------------
@ -75,9 +74,12 @@ public:
virtual void colorIGNode(IGNode *Node,
const std::vector<bool> &IsColorUsedArr) const = 0;
// Check whether a specific register is volatile, i.e., whether it is not
// preserved across calls
virtual bool isRegVolatile(int Reg) const = 0;
// If any specific register needs extra information
// Check whether a specific register is modified as a side-effect of the
// call instruction itself,
virtual bool modifiedByCall(int Reg) const {return false; }
virtual const char* const getRegName(unsigned reg) const = 0;
@ -151,27 +153,18 @@ public:
// as required. See SparcRegInfo.cpp for the implementation for Sparc.
//
virtual void suggestRegs4MethodArgs(const Function *Func,
LiveRangeInfo &LRI) const = 0;
LiveRangeInfo& LRI) const = 0;
virtual void suggestRegs4CallArgs(MachineInstr *CallI,
LiveRangeInfo &LRI) const = 0;
LiveRangeInfo& LRI) const = 0;
virtual void suggestReg4RetValue(MachineInstr *RetI,
LiveRangeInfo &LRI) const = 0;
LiveRangeInfo& LRI) const = 0;
virtual void colorMethodArgs(const Function *Func, LiveRangeInfo &LRI,
AddedInstrns *FirstAI) const = 0;
// Method for inserting caller saving code. The caller must save all the
// volatile registers across a call based on the calling conventions of
// an architecture. This must insert code for saving and restoring
// such registers on
//
virtual void insertCallerSavingCode(std::vector<MachineInstr*>& instrnsBefore,
std::vector<MachineInstr*>& instrnsAfter,
MachineInstr *CallMI,
const BasicBlock *BB,
PhyRegAlloc &PRA) const = 0;
virtual void colorMethodArgs(const Function *Func,
LiveRangeInfo &LRI,
std::vector<MachineInstr*>& InstrnsBefore,
std::vector<MachineInstr*>& InstrnsAfter) const = 0;
// The following methods are used to generate "copy" machine instructions
// for an architecture. Currently they are used in TargetRegClass
@ -204,7 +197,17 @@ public:
virtual void cpValue2Value(Value *Src, Value *Dest,
std::vector<MachineInstr*>& mvec) const = 0;
virtual bool isRegVolatile(int RegClassID, int Reg) const = 0;
// Check whether a specific register is volatile, i.e., whether it is not
// preserved across calls
inline virtual bool isRegVolatile(int RegClassID, int Reg) const {
return MachineRegClassArr[RegClassID]->isRegVolatile(Reg);
}
// Check whether a specific register is modified as a side-effect of the
// call instruction itself,
inline virtual bool modifiedByCall(int RegClassID, int Reg) const {
return MachineRegClassArr[RegClassID]->modifiedByCall(Reg);
}
// Returns the reg used for pushing the address when a method is called.
// This can be used for other purposes between calls