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Remove an unnecessary element, saving 4 bytes per LiveInterval.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41641 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-08-31 08:26:44 +00:00
parent c14b144ec3
commit d4e4937b79
2 changed files with 4 additions and 8 deletions
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9
include/llvm/CodeGen/LiveInterval.h
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@ -106,12 +106,11 @@ namespace llvm {
unsigned preference; // preferred register to allocate for this interval
float weight; // weight of this interval
Ranges ranges; // the ranges in which this register is live
unsigned numvals; // number of value#'s
VNInfoList valnos; // value#'s
public:
LiveInterval(unsigned Reg, float Weight)
: reg(Reg), preference(0), weight(Weight), numvals(0) {
: reg(Reg), preference(0), weight(Weight) {
}
typedef Ranges::iterator iterator;
@ -151,9 +150,9 @@ namespace llvm {
return I;
}
bool containsOneValue() const { return numvals == 1; }
bool containsOneValue() const { return valnos.size() == 1; }
unsigned getNumValNums() const { return numvals; }
unsigned getNumValNums() const { return valnos.size(); }
/// getFirstValNumInfo - Returns pointer to the first val#.
///
@ -175,7 +174,7 @@ namespace llvm {
/// getNextValue - Create a new value number and return it. MIIdx specifies
/// the instruction that defines the value number.
VNInfo *getNextValue(unsigned MIIdx, unsigned SrcReg) {
VNInfo *VNI = new VNInfo(this, numvals++, MIIdx, SrcReg);
VNInfo *VNI = new VNInfo(this, valnos.size(), MIIdx, SrcReg);
valnos.push_back(VNI);
return VNI;
}

3
lib/CodeGen/LiveInterval.cpp
View File

@ -349,13 +349,11 @@ void LiveInterval::join(LiveInterval &Other, int *LHSValNoAssignments,
// Update val# info. Renumber them and make sure they all belong to this
// LiveInterval now.
valnos.clear();
numvals = 0;
for (unsigned i = 0, e = NewVNInfo.size(); i != e; ++i) {
VNInfo *VNI = NewVNInfo[i];
VNI->parent = this;
VNI->id = i; // Renumber val#.
valnos.push_back(VNI);
++numvals;
}
// Okay, now insert the RHS live ranges into the LHS.
@ -484,7 +482,6 @@ void LiveInterval::MergeValueNumberInto(VNInfo *V1, VNInfo *V2) {
VNInfo *VNI = valnos.back();
valnos.pop_back();
delete VNI;
--numvals;
} while (valnos.back()->def == ~1U);
} else {
V1->def = ~1U;