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Finegrainify namespacification 

Minor cleanups to killer pass

llvm-svn: 10555
This commit is contained in:
Chris Lattner 2003-12-20 09:58:55 +00:00
parent 9a4898939a
commit d46cd68695
1 changed files with 20 additions and 21 deletions
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41
llvm/lib/Target/X86/FloatingPoint.cpp
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@ -25,8 +25,7 @@
#include "Support/Statistic.h" #include "Support/Statistic.h"
#include <algorithm> #include <algorithm>
#include <iostream> #include <iostream>
using namespace llvm;
namespace llvm {
namespace { namespace {
Statistic<> NumFXCH("x86-codegen", "Number of fxch instructions inserted"); Statistic<> NumFXCH("x86-codegen", "Number of fxch instructions inserted");
@ -127,7 +126,7 @@ namespace {
}; };
} }
FunctionPass *createX86FloatingPointStackifierPass() { return new FPS(); } FunctionPass *llvm::createX86FloatingPointStackifierPass() { return new FPS(); }
/// runOnMachineFunction - Loop over all of the basic blocks, transforming FP /// runOnMachineFunction - Loop over all of the basic blocks, transforming FP
/// register references into FP stack references. /// register references into FP stack references.
@ -226,12 +225,14 @@ bool FPS::processBasicBlock(MachineFunction &MF, MachineBasicBlock &BB) {
// Efficient Lookup Table Support // Efficient Lookup Table Support
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
struct TableEntry { namespace {
unsigned from; struct TableEntry {
unsigned to; unsigned from;
bool operator<(const TableEntry &TE) const { return from < TE.from; } unsigned to;
bool operator<(unsigned V) const { return from < V; } bool operator<(const TableEntry &TE) const { return from < TE.from; }
}; bool operator<(unsigned V) const { return from < V; }
};
}
static bool TableIsSorted(const TableEntry *Table, unsigned NumEntries) { static bool TableIsSorted(const TableEntry *Table, unsigned NumEntries) {
for (unsigned i = 0; i != NumEntries-1; ++i) for (unsigned i = 0; i != NumEntries-1; ++i)
@ -603,7 +604,6 @@ void FPS::handleSpecialFP(MachineBasicBlock::iterator &I) {
} }
namespace { namespace {
struct FPK : public MachineFunctionPass { struct FPK : public MachineFunctionPass {
virtual const char *getPassName() const { return "X86 FP Killer"; } virtual const char *getPassName() const { return "X86 FP Killer"; }
virtual bool runOnMachineFunction(MachineFunction &MF); virtual bool runOnMachineFunction(MachineFunction &MF);
@ -617,20 +617,20 @@ namespace {
}; };
} }
FunctionPass * createX86FloatingPointKillerPass() { return new FPK(); } FunctionPass *llvm::createX86FloatingPointKillerPass() { return new FPK(); }
bool FPK::runOnMachineFunction(MachineFunction &MF) bool FPK::runOnMachineFunction(MachineFunction &MF) {
{
const TargetInstrInfo& tii = MF.getTarget().getInstrInfo();; const TargetInstrInfo& tii = MF.getTarget().getInstrInfo();;
LiveVariables &LV = getAnalysis<LiveVariables>();
for (MachineFunction::iterator for (MachineFunction::iterator
mbbi = MF.begin(), mbbe = MF.end(); mbbi != mbbe; ++mbbi) { mbbi = MF.begin(), mbbe = MF.end(); mbbi != mbbe; ++mbbi) {
MachineBasicBlock& mbb = *mbbi; MachineBasicBlock& mbb = *mbbi;
MachineBasicBlock::reverse_iterator mii = mbb.rbegin(); MachineBasicBlock::reverse_iterator mii = mbb.rbegin();
// rewind to the last non terminating instruction // rewind to the last non terminating instruction
while (mii != mbb.rend() && tii.isTerminatorInstr((*mii)->getOpcode())) { while (mii != mbb.rend() && tii.isTerminatorInstr((*mii)->getOpcode()))
++mii; ++mii;
}
// add implicit def for all virtual floating point registers so that // add implicit def for all virtual floating point registers so that
// they are spilled at the end of each basic block, since our // they are spilled at the end of each basic block, since our
// register stackifier doesn't handle them otherwise. // register stackifier doesn't handle them otherwise.
@ -644,14 +644,13 @@ bool FPK::runOnMachineFunction(MachineFunction &MF)
.addReg(X86::FP0, MOTy::Def); .addReg(X86::FP0, MOTy::Def);
mbb.insert(mii.base(), instr); mbb.insert(mii.base(), instr);
LiveVariables& lv = getAnalysis<LiveVariables>();
for (unsigned i = 0; i < instr->getNumOperands(); ++i) { for (unsigned i = 0; i < instr->getNumOperands(); ++i) {
lv.HandlePhysRegDef(instr->getOperand(i).getAllocatedRegNum(), instr); LV.HandlePhysRegDef(instr->getOperand(i).getAllocatedRegNum(), instr);
// force live variables to compute that these registers are dead
lv.HandlePhysRegDef(instr->getOperand(i).getAllocatedRegNum(), 0); // force live variables to compute that these registers are dead
LV.HandlePhysRegDef(instr->getOperand(i).getAllocatedRegNum(), 0);
} }
} }
return true; return true;
} }
} // End llvm namespace