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misched: Compress pairs returned by getUnderlyingObjectsForInstr.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185266 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2013-06-29 18:41:17 +00:00
parent 97b808bf70
commit 04d5613162
1 changed files with 15 additions and 12 deletions
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27
lib/CodeGen/ScheduleDAGInstrs.cpp
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@ -116,12 +116,15 @@ static void getUnderlyingObjects(const Value *V,
} while (!Working.empty());
}
typedef SmallVector<PointerIntPair<const Value *, 1, bool>, 4>
UnderlyingObjectsVector;
/// getUnderlyingObjectsForInstr - If this machine instr has memory reference
/// information and it can be tracked to a normal reference to a known
/// object, return the Value for that object.
static void getUnderlyingObjectsForInstr(const MachineInstr *MI,
const MachineFrameInfo *MFI,
SmallVectorImpl<std::pair<const Value *, bool> > &Objects) {
const MachineFrameInfo *MFI,
UnderlyingObjectsVector &Objects) {
if (!MI->hasOneMemOperand() ||
!(*MI->memoperands_begin())->getValue() ||
(*MI->memoperands_begin())->isVolatile())
@ -155,7 +158,7 @@ static void getUnderlyingObjectsForInstr(const MachineInstr *MI,
return;
}
Objects.push_back(std::make_pair(V, MayAlias));
Objects.push_back(UnderlyingObjectsVector::value_type(V, MayAlias));
}
}
@ -845,7 +848,7 @@ void ScheduleDAGInstrs::buildSchedGraph(AliasAnalysis *AA,
AliasMemDefs.clear();
AliasMemUses.clear();
} else if (MI->mayStore()) {
SmallVector<std::pair<const Value *, bool>, 4> Objs;
UnderlyingObjectsVector Objs;
getUnderlyingObjectsForInstr(MI, MFI, Objs);
if (Objs.empty()) {
@ -854,10 +857,10 @@ void ScheduleDAGInstrs::buildSchedGraph(AliasAnalysis *AA,
}
bool MayAlias = false;
for (SmallVector<std::pair<const Value *, bool>, 4>::iterator
K = Objs.begin(), KE = Objs.end(); K != KE; ++K) {
const Value *V = K->first;
bool ThisMayAlias = K->second;
for (UnderlyingObjectsVector::iterator K = Objs.begin(), KE = Objs.end();
K != KE; ++K) {
const Value *V = K->getPointer();
bool ThisMayAlias = K->getInt();
if (ThisMayAlias)
MayAlias = true;
@ -919,7 +922,7 @@ void ScheduleDAGInstrs::buildSchedGraph(AliasAnalysis *AA,
if (MI->isInvariantLoad(AA)) {
// Invariant load, no chain dependencies needed!
} else {
SmallVector<std::pair<const Value *, bool>, 4> Objs;
UnderlyingObjectsVector Objs;
getUnderlyingObjectsForInstr(MI, MFI, Objs);
if (Objs.empty()) {
@ -935,10 +938,10 @@ void ScheduleDAGInstrs::buildSchedGraph(AliasAnalysis *AA,
MayAlias = false;
}
for (SmallVector<std::pair<const Value *, bool>, 4>::iterator
for (UnderlyingObjectsVector::iterator
J = Objs.begin(), JE = Objs.end(); J != JE; ++J) {
const Value *V = J->first;
bool ThisMayAlias = J->second;
const Value *V = J->getPointer();
bool ThisMayAlias = J->getInt();
if (ThisMayAlias)
MayAlias = true;