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If the target has V9 instructions, this pass is a noop, don't bother

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running it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25811 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-01-30 05:51:14 +00:00
parent b34d3fd4cf
commit 5295de7c41
2 changed files with 32 additions and 16 deletions
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24
lib/Target/Sparc/FPMover.cpp
View File

@ -12,8 +12,10 @@
//===----------------------------------------------------------------------===//
#include "SparcV8.h"
#include "SparcV8Subtarget.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Support/Debug.h"
#include <iostream>
@ -36,14 +38,7 @@ namespace {
}
bool runOnMachineBasicBlock(MachineBasicBlock &MBB);
bool runOnMachineFunction(MachineFunction &F) {
bool Changed = false;
for (MachineFunction::iterator FI = F.begin(), FE = F.end();
FI != FE; ++FI)
Changed |= runOnMachineBasicBlock(*FI);
return Changed;
}
bool runOnMachineFunction(MachineFunction &F);
};
} // end of anonymous namespace
@ -122,3 +117,16 @@ bool FPMover::runOnMachineBasicBlock(MachineBasicBlock &MBB) {
}
return Changed;
}
bool FPMover::runOnMachineFunction(MachineFunction &F) {
// If the target has V9 instructions, the fp-mover pseudos will never be
// emitted. Avoid a scan of the instructions to improve compile time.
if (TM.getSubtarget<SparcV8Subtarget>().isV9())
return false;
bool Changed = false;
for (MachineFunction::iterator FI = F.begin(), FE = F.end();
FI != FE; ++FI)
Changed |= runOnMachineBasicBlock(*FI);
return Changed;
}

24
lib/Target/SparcV8/FPMover.cpp
View File

@ -12,8 +12,10 @@
//===----------------------------------------------------------------------===//
#include "SparcV8.h"
#include "SparcV8Subtarget.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Support/Debug.h"
#include <iostream>
@ -36,14 +38,7 @@ namespace {
}
bool runOnMachineBasicBlock(MachineBasicBlock &MBB);
bool runOnMachineFunction(MachineFunction &F) {
bool Changed = false;
for (MachineFunction::iterator FI = F.begin(), FE = F.end();
FI != FE; ++FI)
Changed |= runOnMachineBasicBlock(*FI);
return Changed;
}
bool runOnMachineFunction(MachineFunction &F);
};
} // end of anonymous namespace
@ -122,3 +117,16 @@ bool FPMover::runOnMachineBasicBlock(MachineBasicBlock &MBB) {
}
return Changed;
}
bool FPMover::runOnMachineFunction(MachineFunction &F) {
// If the target has V9 instructions, the fp-mover pseudos will never be
// emitted. Avoid a scan of the instructions to improve compile time.
if (TM.getSubtarget<SparcV8Subtarget>().isV9())
return false;
bool Changed = false;
for (MachineFunction::iterator FI = F.begin(), FE = F.end();
FI != FE; ++FI)
Changed |= runOnMachineBasicBlock(*FI);
return Changed;
}