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isTriviallyReMaterializable checks the

Browse Source 
TargetInstrDesc::isRematerializable flag, so it isn't necessary to do
this check in its callers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83671 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-10-09 21:02:10 +00:00
parent 11596ed43c
commit 599a87aca0
4 changed files with 4 additions and 7 deletions
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3
lib/CodeGen/LiveIntervalAnalysis.cpp
View File

@ -1423,8 +1423,7 @@ bool LiveIntervals::isReMaterializable(const LiveInterval &li,
// If the target-specific rules don't identify an instruction as
// being trivially rematerializable, use some target-independent
// rules.
if (!MI->getDesc().isRematerializable() ||
!tii_->isTriviallyReMaterializable(MI)) {
if (!tii_->isTriviallyReMaterializable(MI)) {
if (!EnableAggressiveRemat)
return false;

3
lib/CodeGen/MachineInstr.cpp
View File

@ -960,8 +960,7 @@ bool MachineInstr::isSafeToMove(const TargetInstrInfo *TII,
bool MachineInstr::isSafeToReMat(const TargetInstrInfo *TII,
unsigned DstReg) const {
bool SawStore = false;
if (!getDesc().isRematerializable() ||
!TII->isTriviallyReMaterializable(this) ||
if (!TII->isTriviallyReMaterializable(this) ||
!isSafeToMove(TII, SawStore))
return false;
for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {

2
lib/CodeGen/MachineLICM.cpp
View File

@ -322,7 +322,7 @@ bool MachineLICM::IsProfitableToHoist(MachineInstr &MI) {
// FIXME: For now, only hoist re-materilizable instructions. LICM will
// increase register pressure. We want to make sure it doesn't increase
// spilling.
if (!TID.isRematerializable() || !TII->isTriviallyReMaterializable(&MI))
if (!TII->isTriviallyReMaterializable(&MI))
return false;
// If result(s) of this instruction is used by PHIs, then don't hoist it.

3
lib/CodeGen/SimpleRegisterCoalescing.cpp
View File

@ -646,8 +646,7 @@ bool SimpleRegisterCoalescing::ReMaterializeTrivialDef(LiveInterval &SrcInt,
const TargetInstrDesc &TID = DefMI->getDesc();
if (!TID.isAsCheapAsAMove())
return false;
if (!DefMI->getDesc().isRematerializable() ||
!tii_->isTriviallyReMaterializable(DefMI))
if (!tii_->isTriviallyReMaterializable(DefMI))
return false;
bool SawStore = false;
if (!DefMI->isSafeToMove(tii_, SawStore))