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Update the TargetInstrInfo interfaces so hasLoad/StoreFrom/ToStackSlot

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can return a MachineMemOperand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90615 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Greene 2009-12-04 23:00:50 +00:00
parent ea7bfc5aa0
commit 5e33632559
1 changed files with 17 additions and 6 deletions
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23
include/llvm/Target/TargetInstrInfo.h
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@ -16,6 +16,7 @@
#include "llvm/Target/TargetInstrDesc.h" #include "llvm/Target/TargetInstrDesc.h"
#include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineMemOperand.h"
namespace llvm { namespace llvm {
@ -182,11 +183,13 @@ public:
/// hasLoadFromStackSlot - If the specified machine instruction has /// hasLoadFromStackSlot - If the specified machine instruction has
/// a load from a stack slot, return true along with the FrameIndex /// a load from a stack slot, return true along with the FrameIndex
/// of the loaded stack slot. If not, return false. Unlike /// of the loaded stack slot and the machine mem operand containing
/// the reference. If not, return false. Unlike
/// isLoadFromStackSlot, this returns true for any instructions that /// isLoadFromStackSlot, this returns true for any instructions that
/// loads from the stack. This is just a hint, as some cases may be /// loads from the stack. This is just a hint, as some cases may be
/// missed. /// missed.
virtual bool hasLoadFromStackSlot(const MachineInstr *MI, virtual bool hasLoadFromStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const { int &FrameIndex) const {
return 0; return 0;
} }
@ -205,17 +208,18 @@ public:
/// stack locations as well. This uses a heuristic so it isn't /// stack locations as well. This uses a heuristic so it isn't
/// reliable for correctness. /// reliable for correctness.
virtual unsigned isStoreToStackSlotPostFE(const MachineInstr *MI, virtual unsigned isStoreToStackSlotPostFE(const MachineInstr *MI,
int &FrameIndex) const { int &FrameIndex) const {
return 0; return 0;
} }
/// hasStoreToStackSlot - If the specified machine instruction has a /// hasStoreToStackSlot - If the specified machine instruction has a
/// store to a stack slot, return true along with the FrameIndex of /// store to a stack slot, return true along with the FrameIndex of
/// the loaded stack slot. If not, return false. Unlike /// the loaded stack slot and the machine mem operand containing the
/// isStoreToStackSlot, this returns true for any instructions that /// reference. If not, return false. Unlike isStoreToStackSlot,
/// loads from the stack. This is just a hint, as some cases may be /// this returns true for any instructions that loads from the
/// missed. /// stack. This is just a hint, as some cases may be missed.
virtual bool hasStoreToStackSlot(const MachineInstr *MI, virtual bool hasStoreToStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const { int &FrameIndex) const {
return 0; return 0;
} }
@ -543,6 +547,13 @@ public:
/// length. /// length.
virtual unsigned getInlineAsmLength(const char *Str, virtual unsigned getInlineAsmLength(const char *Str,
const MCAsmInfo &MAI) const; const MCAsmInfo &MAI) const;
/// TailDuplicationLimit - Returns the limit on the number of instructions
/// in basic block MBB beyond which it will not be tail-duplicated.
virtual unsigned TailDuplicationLimit(const MachineBasicBlock &MBB,
unsigned DefaultLimit) const {
return DefaultLimit;
}
}; };
/// TargetInstrInfoImpl - This is the default implementation of /// TargetInstrInfoImpl - This is the default implementation of