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Switch NodeID to track 32-bit chunks instead of 8-bit chunks, for a 2.5%

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speedup in isel time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29640 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-08-11 23:55:53 +00:00
parent f42d1ddb18
commit 7ed9ea81f8
2 changed files with 18 additions and 31 deletions
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25
include/llvm/CodeGen/SelectionDAGCSEMap.h
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@@ -63,7 +63,7 @@ namespace llvm {
class NodeID {
/// Use a SmallVector to avoid a heap allocation in the common case.
///
SmallVector<unsigned char, 256> Bits;
SmallVector<unsigned, 32> Bits;
public:
NodeID() {}
NodeID(SDNode *N);
@@ -77,13 +77,13 @@ namespace llvm {
const SDOperand *OpList, unsigned N);
void SetOpcode(unsigned short ID) {
Bits.push_back(ID & 0xFF);
Bits.push_back(ID >> 8);
Bits.push_back(ID);
}
/// getOpcode - If the opcode has been set for this NodeID, return it.
/// getOpcode - Return the opcode that has been set for this NodeID.
///
unsigned getOpcode() const {
return Bits[0] + (Bits[1] << 8);
return Bits[0];
}
void SetValueTypes(const void *VTList) { AddPointer(VTList); }
@@ -99,21 +99,14 @@ namespace llvm {
void AddOperand(SDOperand Op);
void AddPointer(const void *Ptr);
void AddInteger(signed I) {
Bits.push_back((I >> 0) & 0xFF);
Bits.push_back((I >> 8) & 0xFF);
Bits.push_back((I >> 16) & 0xFF);
Bits.push_back((I >> 24) & 0xFF);
Bits.push_back(I);
}
void AddInteger(unsigned I) {
AddInteger((signed)I);
Bits.push_back(I);
}
void AddInteger(uint64_t I) {
union {
uint64_t x;
unsigned char A[8];
};
x = I;
Bits.append(A, A+8);
Bits.push_back(unsigned(I));
Bits.push_back(unsigned(I >> 32));
}
unsigned ComputeHash() const;