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implement a todo: change a map into a vector

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31805 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-11-17 01:52:23 +00:00
parent fb1aab0673
commit 280b714cd0
1 changed files with 6 additions and 6 deletions
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12
lib/Target/PowerPC/PPCBranchSelector.cpp
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@ -23,7 +23,6 @@
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Support/Compiler.h"
#include <map>
using namespace llvm;
static Statistic<> NumExpanded("ppc-branch-select",
@ -31,9 +30,8 @@ static Statistic<> NumExpanded("ppc-branch-select",
namespace {
struct VISIBILITY_HIDDEN PPCBSel : public MachineFunctionPass {
/// OffsetMap - Mapping between BB and byte offset from start of function.
/// TODO: replace this with a vector, using the MBB idx as the key.
std::map<MachineBasicBlock*, unsigned> OffsetMap;
/// OffsetMap - Mapping between BB # and byte offset from start of function.
std::vector<unsigned> OffsetMap;
virtual bool runOnMachineFunction(MachineFunction &Fn);
@ -81,12 +79,14 @@ bool PPCBSel::runOnMachineFunction(MachineFunction &Fn) {
// Running total of instructions encountered since beginning of function
unsigned ByteCount = 0;
OffsetMap.resize(Fn.getNumBlockIDs());
// For each MBB, add its offset to the offset map, and count up its
// instructions
for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E;
++MFI) {
MachineBasicBlock *MBB = MFI;
OffsetMap[MBB] = ByteCount;
OffsetMap[MBB->getNumber()] = ByteCount;
for (MachineBasicBlock::iterator MBBI = MBB->begin(), EE = MBB->end();
MBBI != EE; ++MBBI)
@ -128,7 +128,7 @@ bool PPCBSel::runOnMachineFunction(MachineFunction &Fn) {
unsigned Opcode = MBBI->getOperand(1).getImmedValue();
unsigned CRReg = MBBI->getOperand(0).getReg();
int Displacement = OffsetMap[DestMBB] - ByteCount;
int Displacement = OffsetMap[DestMBB->getNumber()] - ByteCount;
unsigned Inverted = PPCInstrInfo::invertPPCBranchOpcode(Opcode);
MachineBasicBlock::iterator MBBJ;