aboutsummaryrefslogtreecommitdiff
path: root/lib/CodeGen/VirtRegMap.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/CodeGen/VirtRegMap.cpp')
-rw-r--r--lib/CodeGen/VirtRegMap.cpp82
1 files changed, 44 insertions, 38 deletions
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 7ee139f9a8..8f98b51506 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -30,7 +30,6 @@
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/STLExtras.h"
#include <algorithm>
-#include <iostream>
using namespace llvm;
namespace {
@@ -113,6 +112,11 @@ void VirtRegMap::virtFolded(unsigned VirtReg, MachineInstr *OldMI,
}
void VirtRegMap::print(std::ostream &OS) const {
+ llvm_ostream LOS(OS);
+ print(LOS);
+}
+
+void VirtRegMap::print(llvm_ostream &OS) const {
const MRegisterInfo* MRI = MF.getTarget().getRegisterInfo();
OS << "********** REGISTER MAP **********\n";
@@ -130,7 +134,10 @@ void VirtRegMap::print(std::ostream &OS) const {
OS << '\n';
}
-void VirtRegMap::dump() const { print(std::cerr); }
+void VirtRegMap::dump() const {
+ llvm_ostream OS = DOUT;
+ print(OS);
+}
//===----------------------------------------------------------------------===//
@@ -146,9 +153,8 @@ namespace {
}
bool SimpleSpiller::runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM) {
- DEBUG(std::cerr << "********** REWRITE MACHINE CODE **********\n");
- DEBUG(std::cerr << "********** Function: "
- << MF.getFunction()->getName() << '\n');
+ DOUT << "********** REWRITE MACHINE CODE **********\n";
+ DOUT << "********** Function: " << MF.getFunction()->getName() << '\n';
const TargetMachine &TM = MF.getTarget();
const MRegisterInfo &MRI = *TM.getRegisterInfo();
bool *PhysRegsUsed = MF.getUsedPhysregs();
@@ -161,7 +167,7 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM) {
for (MachineFunction::iterator MBBI = MF.begin(), E = MF.end();
MBBI != E; ++MBBI) {
- DEBUG(std::cerr << MBBI->getBasicBlock()->getName() << ":\n");
+ DOUT << MBBI->getBasicBlock()->getName() << ":\n";
MachineBasicBlock &MBB = *MBBI;
for (MachineBasicBlock::iterator MII = MBB.begin(),
E = MBB.end(); MII != E; ++MII) {
@@ -183,7 +189,7 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM) {
MRI.loadRegFromStackSlot(MBB, &MI, PhysReg, StackSlot, RC);
LoadedRegs.push_back(VirtReg);
++NumLoads;
- DEBUG(std::cerr << '\t' << *prior(MII));
+ DOUT << '\t' << *prior(MII);
}
if (MO.isDef()) {
@@ -198,7 +204,7 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM) {
}
}
- DEBUG(std::cerr << '\t' << MI);
+ DOUT << '\t' << MI;
LoadedRegs.clear();
}
}
@@ -221,8 +227,8 @@ namespace {
bool runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM) {
MRI = MF.getTarget().getRegisterInfo();
TII = MF.getTarget().getInstrInfo();
- DEBUG(std::cerr << "\n**** Local spiller rewriting function '"
- << MF.getFunction()->getName() << "':\n");
+ DOUT << "\n**** Local spiller rewriting function '"
+ << MF.getFunction()->getName() << "':\n";
for (MachineFunction::iterator MBB = MF.begin(), E = MF.end();
MBB != E; ++MBB)
@@ -293,8 +299,8 @@ public:
PhysRegsAvailable.insert(std::make_pair(Reg, Slot));
SpillSlotsAvailable[Slot] = (Reg << 1) | (unsigned)CanClobber;
- DEBUG(std::cerr << "Remembering SS#" << Slot << " in physreg "
- << MRI->getName(Reg) << "\n");
+ DOUT << "Remembering SS#" << Slot << " in physreg "
+ << MRI->getName(Reg) << "\n";
}
/// canClobberPhysReg - Return true if the spiller is allowed to change the
@@ -328,8 +334,8 @@ void AvailableSpills::ClobberPhysRegOnly(unsigned PhysReg) {
assert((SpillSlotsAvailable[Slot] >> 1) == PhysReg &&
"Bidirectional map mismatch!");
SpillSlotsAvailable.erase(Slot);
- DEBUG(std::cerr << "PhysReg " << MRI->getName(PhysReg)
- << " clobbered, invalidating SS#" << Slot << "\n");
+ DOUT << "PhysReg " << MRI->getName(PhysReg)
+ << " clobbered, invalidating SS#" << Slot << "\n";
}
}
@@ -486,9 +492,9 @@ namespace {
Spills.addAvailable(NewOp.StackSlot, NewPhysReg);
++NumLoads;
DEBUG(MachineBasicBlock::iterator MII = MI;
- std::cerr << '\t' << *prior(MII));
+ DOUT << '\t' << *prior(MII));
- DEBUG(std::cerr << "Reuse undone!\n");
+ DOUT << "Reuse undone!\n";
--NumReused;
// Finally, PhysReg is now available, go ahead and use it.
@@ -506,7 +512,7 @@ namespace {
/// register allocator is done with them. If possible, avoid reloading vregs.
void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
- DEBUG(std::cerr << MBB.getBasicBlock()->getName() << ":\n");
+ DOUT << MBB.getBasicBlock()->getName() << ":\n";
// Spills - Keep track of which spilled values are available in physregs so
// that we can choose to reuse the physregs instead of emitting reloads.
@@ -600,10 +606,10 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
if (CanReuse) {
// If this stack slot value is already available, reuse it!
- DEBUG(std::cerr << "Reusing SS#" << StackSlot << " from physreg "
- << MRI->getName(PhysReg) << " for vreg"
- << VirtReg <<" instead of reloading into physreg "
- << MRI->getName(VRM.getPhys(VirtReg)) << "\n");
+ DOUT << "Reusing SS#" << StackSlot << " from physreg "
+ << MRI->getName(PhysReg) << " for vreg"
+ << VirtReg <<" instead of reloading into physreg "
+ << MRI->getName(VRM.getPhys(VirtReg)) << "\n";
MI.getOperand(i).setReg(PhysReg);
// The only technical detail we have is that we don't know that
@@ -654,10 +660,10 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
// incoming, we don't need to inserted a dead copy.
if (DesignatedReg == PhysReg) {
// If this stack slot value is already available, reuse it!
- DEBUG(std::cerr << "Reusing SS#" << StackSlot << " from physreg "
- << MRI->getName(PhysReg) << " for vreg"
- << VirtReg
- << " instead of reloading into same physreg.\n");
+ DOUT << "Reusing SS#" << StackSlot << " from physreg "
+ << MRI->getName(PhysReg) << " for vreg"
+ << VirtReg
+ << " instead of reloading into same physreg.\n";
MI.getOperand(i).setReg(PhysReg);
ReusedOperands.markClobbered(PhysReg);
++NumReused;
@@ -676,7 +682,7 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
Spills.addAvailable(StackSlot, DesignatedReg);
MI.getOperand(i).setReg(DesignatedReg);
- DEBUG(std::cerr << '\t' << *prior(MII));
+ DOUT << '\t' << *prior(MII);
++NumReused;
continue;
}
@@ -706,26 +712,26 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
Spills.addAvailable(StackSlot, PhysReg);
++NumLoads;
MI.getOperand(i).setReg(PhysReg);
- DEBUG(std::cerr << '\t' << *prior(MII));
+ DOUT << '\t' << *prior(MII);
}
- DEBUG(std::cerr << '\t' << MI);
+ DOUT << '\t' << MI;
// If we have folded references to memory operands, make sure we clear all
// physical registers that may contain the value of the spilled virtual
// register
VirtRegMap::MI2VirtMapTy::const_iterator I, End;
for (tie(I, End) = VRM.getFoldedVirts(&MI); I != End; ++I) {
- DEBUG(std::cerr << "Folded vreg: " << I->second.first << " MR: "
- << I->second.second);
+ DOUT << "Folded vreg: " << I->second.first << " MR: "
+ << I->second.second;
unsigned VirtReg = I->second.first;
VirtRegMap::ModRef MR = I->second.second;
if (!VRM.hasStackSlot(VirtReg)) {
- DEBUG(std::cerr << ": No stack slot!\n");
+ DOUT << ": No stack slot!\n";
continue;
}
int SS = VRM.getStackSlot(VirtReg);
- DEBUG(std::cerr << " - StackSlot: " << SS << "\n");
+ DOUT << " - StackSlot: " << SS << "\n";
// If this folded instruction is just a use, check to see if it's a
// straight load from the virt reg slot.
@@ -736,7 +742,7 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
// If this spill slot is available, turn it into a copy (or nothing)
// instead of leaving it as a load!
if (unsigned InReg = Spills.getSpillSlotPhysReg(SS)) {
- DEBUG(std::cerr << "Promoted Load To Copy: " << MI);
+ DOUT << "Promoted Load To Copy: " << MI;
MachineFunction &MF = *MBB.getParent();
if (DestReg != InReg) {
MRI->copyRegToReg(MBB, &MI, DestReg, InReg,
@@ -764,7 +770,7 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
else {
// If we get here, the store is dead, nuke it now.
assert(VirtRegMap::isMod && "Can't be modref!");
- DEBUG(std::cerr << "Removed dead store:\t" << *MDSI->second);
+ DOUT << "Removed dead store:\t" << *MDSI->second;
MBB.erase(MDSI->second);
VRM.RemoveFromFoldedVirtMap(MDSI->second);
MaybeDeadStores.erase(MDSI);
@@ -813,7 +819,7 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
unsigned Src, Dst;
if (TII->isMoveInstr(MI, Src, Dst) && Src == Dst) {
++NumDCE;
- DEBUG(std::cerr << "Removing now-noop copy: " << MI);
+ DOUT << "Removing now-noop copy: " << MI;
MBB.erase(&MI);
VRM.RemoveFromFoldedVirtMap(&MI);
goto ProcessNextInst;
@@ -861,7 +867,7 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
PhysRegsUsed[PhysReg] = true;
ReusedOperands.markClobbered(PhysReg);
MRI->storeRegToStackSlot(MBB, next(MII), PhysReg, StackSlot, RC);
- DEBUG(std::cerr << "Store:\t" << *next(MII));
+ DOUT << "Store:\t" << *next(MII);
MI.getOperand(i).setReg(PhysReg);
// Check to see if this is a noop copy. If so, eliminate the
@@ -870,7 +876,7 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
unsigned Src, Dst;
if (TII->isMoveInstr(MI, Src, Dst) && Src == Dst) {
++NumDCE;
- DEBUG(std::cerr << "Removing now-noop copy: " << MI);
+ DOUT << "Removing now-noop copy: " << MI;
MBB.erase(&MI);
VRM.RemoveFromFoldedVirtMap(&MI);
goto ProcessNextInst;
@@ -880,7 +886,7 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
// If there is a dead store to this stack slot, nuke it now.
MachineInstr *&LastStore = MaybeDeadStores[StackSlot];
if (LastStore) {
- DEBUG(std::cerr << "Removed dead store:\t" << *LastStore);
+ DOUT << "Removed dead store:\t" << *LastStore;
++NumDSE;
MBB.erase(LastStore);
VRM.RemoveFromFoldedVirtMap(LastStore);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-04-29 13:06:28 +0000