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Hoist hasLoadFromStackSlot and hasStoreToStackSlot.

Browse Source 
These the methods are target-independent since they simply scan the
memory operands.  They can live in TargetInstrInfoImpl.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137063 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-08-08 20:53:24 +00:00
parent 6d74631062
commit 2df3f58a0b
4 changed files with 42 additions and 57 deletions
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6
include/llvm/Target/TargetInstrInfo.h
View File

@ -693,6 +693,12 @@ public:
unsigned &SrcOpIdx2) const;
virtual bool canFoldMemoryOperand(const MachineInstr *MI,
const SmallVectorImpl<unsigned> &Ops) const;
virtual bool hasLoadFromStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const;
virtual bool hasStoreToStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const;
virtual bool PredicateInstruction(MachineInstr *MI,
const SmallVectorImpl<MachineOperand> &Pred) const;
virtual void reMaterialize(MachineBasicBlock &MBB,

36
lib/CodeGen/TargetInstrInfoImpl.cpp
View File

@ -160,6 +160,42 @@ bool TargetInstrInfoImpl::PredicateInstruction(MachineInstr *MI,
return MadeChange;
}
bool TargetInstrInfoImpl::hasLoadFromStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const {
for (MachineInstr::mmo_iterator o = MI->memoperands_begin(),
oe = MI->memoperands_end();
o != oe;
++o) {
if ((*o)->isLoad() && (*o)->getValue())
if (const FixedStackPseudoSourceValue *Value =
dyn_cast<const FixedStackPseudoSourceValue>((*o)->getValue())) {
FrameIndex = Value->getFrameIndex();
MMO = *o;
return true;
}
}
return false;
}
bool TargetInstrInfoImpl::hasStoreToStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const {
for (MachineInstr::mmo_iterator o = MI->memoperands_begin(),
oe = MI->memoperands_end();
o != oe;
++o) {
if ((*o)->isStore() && (*o)->getValue())
if (const FixedStackPseudoSourceValue *Value =
dyn_cast<const FixedStackPseudoSourceValue>((*o)->getValue())) {
FrameIndex = Value->getFrameIndex();
MMO = *o;
return true;
}
}
return false;
}
void TargetInstrInfoImpl::reMaterialize(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned DestReg,

36
lib/Target/X86/X86InstrInfo.cpp
View File

@ -856,24 +856,6 @@ unsigned X86InstrInfo::isLoadFromStackSlotPostFE(const MachineInstr *MI,
return 0;
}
bool X86InstrInfo::hasLoadFromStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const {
for (MachineInstr::mmo_iterator o = MI->memoperands_begin(),
oe = MI->memoperands_end();
o != oe;
++o) {
if ((*o)->isLoad() && (*o)->getValue())
if (const FixedStackPseudoSourceValue *Value =
dyn_cast<const FixedStackPseudoSourceValue>((*o)->getValue())) {
FrameIndex = Value->getFrameIndex();
MMO = *o;
return true;
}
}
return false;
}
unsigned X86InstrInfo::isStoreToStackSlot(const MachineInstr *MI,
int &FrameIndex) const {
if (isFrameStoreOpcode(MI->getOpcode()))
@ -896,24 +878,6 @@ unsigned X86InstrInfo::isStoreToStackSlotPostFE(const MachineInstr *MI,
return 0;
}
bool X86InstrInfo::hasStoreToStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const {
for (MachineInstr::mmo_iterator o = MI->memoperands_begin(),
oe = MI->memoperands_end();
o != oe;
++o) {
if ((*o)->isStore() && (*o)->getValue())
if (const FixedStackPseudoSourceValue *Value =
dyn_cast<const FixedStackPseudoSourceValue>((*o)->getValue())) {
FrameIndex = Value->getFrameIndex();
MMO = *o;
return true;
}
}
return false;
}
/// regIsPICBase - Return true if register is PIC base (i.e.g defined by
/// X86::MOVPC32r.
static bool regIsPICBase(unsigned BaseReg, const MachineRegisterInfo &MRI) {

21
lib/Target/X86/X86InstrInfo.h
View File

@ -166,17 +166,6 @@ public:
unsigned isLoadFromStackSlotPostFE(const MachineInstr *MI,
int &FrameIndex) const;
/// hasLoadFromStackSlot - If the specified machine instruction has
/// a load from a stack slot, return true along with the FrameIndex
/// 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
/// loads from the stack. This is a hint only and may not catch all
/// cases.
bool hasLoadFromStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const;
unsigned isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const;
/// isStoreToStackSlotPostFE - Check for post-frame ptr elimination
/// stack locations as well. This uses a heuristic so it isn't
@ -184,16 +173,6 @@ public:
unsigned isStoreToStackSlotPostFE(const MachineInstr *MI,
int &FrameIndex) const;
/// hasStoreToStackSlot - If the specified machine instruction has a
/// store to a stack slot, return true along with the FrameIndex of
/// the loaded stack slot and the machine mem operand containing the
/// reference. If not, return false. Unlike isStoreToStackSlot,
/// this returns true for any instructions that loads from the
/// stack. This is a hint only and may not catch all cases.
bool hasStoreToStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const;
bool isReallyTriviallyReMaterializable(const MachineInstr *MI,
AliasAnalysis *AA) const;
void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,