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[OperandBundles] Refactor; NFCI

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Intended to make later changes simpler.  Exposes
`getBundleOperandsStartIndex` and `getBundleOperandsEndIndex`, and uses
them for the computation in `getNumTotalBundleOperands`.

llvm-svn: 252037
This commit is contained in:
Sanjoy Das 2015-11-04 04:31:06 +00:00
parent 93ead3ba46
commit ce6d998be5
1 changed files with 16 additions and 5 deletions
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21
include/llvm/IR/InstrTypes.h
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@ -1196,18 +1196,29 @@ public:
/// \brief Return true if this User has any operand bundles.
bool hasOperandBundles() const { return getNumOperandBundles() != 0; }
/// \brief Return the index of the first bundle operand in the Use array.
unsigned getBundleOperandsStartIndex() const {
assert(hasOperandBundles() && "Don't call otherwise!");
return bundle_op_info_begin()->Begin;
}
/// \brief Return the index of the last bundle operand in the Use array.
unsigned getBundleOperandsEndIndex() const {
assert(hasOperandBundles() && "Don't call otherwise!");
return bundle_op_info_end()[-1].End;
}
/// \brief Return the total number operands (not operand bundles) used by
/// every operand bundle in this OperandBundleUser.
unsigned getNumTotalBundleOperands() const {
if (!hasOperandBundles())
return 0;
auto *Begin = bundle_op_info_begin();
auto *Back = bundle_op_info_end() - 1;
unsigned Begin = getBundleOperandsStartIndex();
unsigned End = getBundleOperandsEndIndex();
assert(Begin <= Back && "hasOperandBundles() returned true!");
return Back->End - Begin->Begin;
assert(Begin <= End && "Should be!");
return End - Begin;
}
/// \brief Return the operand bundle at a specific index.