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Make VTs and UnicodeCharSet ctors constexpr if the compiler supports it.

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There are static variables of this around that we really want to go
into a read-only segment. Sadly compilers are not smart enough to figure
that out without constexpr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230895 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2015-03-01 18:10:07 +00:00
parent 30fa873958
commit f5582d938e
3 changed files with 9 additions and 6 deletions
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4
include/llvm/CodeGen/MachineValueType.h
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@ -161,8 +161,8 @@ namespace llvm {
SimpleValueType SimpleTy;
MVT() : SimpleTy((SimpleValueType)(INVALID_SIMPLE_VALUE_TYPE)) {}
MVT(SimpleValueType SVT) : SimpleTy(SVT) { }
LLVM_CONSTEXPR MVT() : SimpleTy(INVALID_SIMPLE_VALUE_TYPE) {}
LLVM_CONSTEXPR MVT(SimpleValueType SVT) : SimpleTy(SVT) { }
bool operator>(const MVT& S) const { return SimpleTy > S.SimpleTy; }
bool operator<(const MVT& S) const { return SimpleTy < S.SimpleTy; }

7
include/llvm/CodeGen/ValueTypes.h
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@ -34,10 +34,9 @@ namespace llvm {
Type *LLVMTy;
public:
EVT() : V((MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE)),
LLVMTy(nullptr) {}
EVT(MVT::SimpleValueType SVT) : V(SVT), LLVMTy(nullptr) { }
EVT(MVT S) : V(S), LLVMTy(nullptr) {}
LLVM_CONSTEXPR EVT() : V(MVT::INVALID_SIMPLE_VALUE_TYPE), LLVMTy(nullptr) {}
LLVM_CONSTEXPR EVT(MVT::SimpleValueType SVT) : V(SVT), LLVMTy(nullptr) {}
LLVM_CONSTEXPR EVT(MVT S) : V(S), LLVMTy(nullptr) {}
bool operator==(EVT VT) const {
return !(*this != VT);

4
include/llvm/Support/UnicodeCharRanges.h
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@ -50,9 +50,13 @@ public:
/// the UnicodeCharSet instance, and should not change. Array is validated by
/// the constructor, so it makes sense to create as few UnicodeCharSet
/// instances per each array of ranges, as possible.
#ifdef NDEBUG
LLVM_CONSTEXPR UnicodeCharSet(CharRanges Ranges) : Ranges(Ranges) {}
#else
UnicodeCharSet(CharRanges Ranges) : Ranges(Ranges) {
assert(rangesAreValid());
}
#endif
/// \brief Returns true if the character set contains the Unicode code point
/// \p C.