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EarlyCSE: Replace custom hash mixing with Hashing.h

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Brings it in line with the other hashes in EarlyCSE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227733 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2015-02-01 12:30:59 +00:00
parent 276f405407
commit 5dffd27576
1 changed files with 4 additions and 14 deletions
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18
lib/Transforms/Scalar/EarlyCSE.cpp
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@ -42,10 +42,6 @@ STATISTIC(NumCSELoad, "Number of load instructions CSE'd");
STATISTIC(NumCSECall, "Number of call instructions CSE'd"); STATISTIC(NumCSECall, "Number of call instructions CSE'd");
STATISTIC(NumDSE, "Number of trivial dead stores removed"); STATISTIC(NumDSE, "Number of trivial dead stores removed");
static unsigned getHash(const void *V) {
return DenseMapInfo<const void*>::getHashValue(V);
}
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// SimpleValue // SimpleValue
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
@ -239,16 +235,10 @@ template <> struct DenseMapInfo<CallValue> {
unsigned DenseMapInfo<CallValue>::getHashValue(CallValue Val) { unsigned DenseMapInfo<CallValue>::getHashValue(CallValue Val) {
Instruction *Inst = Val.Inst; Instruction *Inst = Val.Inst;
// Hash in all of the operands as pointers. // Hash all of the operands as pointers and mix in the opcode.
unsigned Res = 0; return hash_combine(
for (unsigned i = 0, e = Inst->getNumOperands(); i != e; ++i) { Inst->getOpcode(),
assert(!Inst->getOperand(i)->getType()->isMetadataTy() && hash_combine_range(Inst->value_op_begin(), Inst->value_op_end()));
"Cannot value number calls with metadata operands");
Res ^= getHash(Inst->getOperand(i)) << (i & 0xF);
}
// Mix in the opcode.
return (Res << 1) ^ Inst->getOpcode();
} }
bool DenseMapInfo<CallValue>::isEqual(CallValue LHS, CallValue RHS) { bool DenseMapInfo<CallValue>::isEqual(CallValue LHS, CallValue RHS) {