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Update to latest LLVM code (#88)

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* Update to latest LLVM code.

* Add LLVM's raw_ostream.

* MathExtras.h: Include cmath for log2.
This commit is contained in:
Peter Johnson
2016-09-25 17:49:01 -07:00
committed by GitHub
parent f6b700ea97
commit ee42448504
29 changed files with 4455 additions and 433 deletions
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59
wpiutil/include/llvm/StringExtras.h
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@@ -44,55 +44,40 @@ static inline unsigned hexDigitValue(char C) {
return -1U;
}
/// utohex_buffer - Emit the specified number into the buffer specified by
/// BufferEnd, returning a pointer to the start of the string. This can be used
/// like this: (note that the buffer must be large enough to handle any number):
/// char Buffer[40];
/// printf("0x%s", utohex_buffer(X, Buffer+40));
///
/// This should only be used with unsigned types.
///
template<typename IntTy>
static inline char *utohex_buffer(IntTy X, char *BufferEnd, bool LowerCase = false) {
char *BufPtr = BufferEnd;
*--BufPtr = 0; // Null terminate buffer.
if (X == 0) {
*--BufPtr = '0'; // Handle special case.
return BufPtr;
}
static inline std::string utohexstr(uint64_t X, bool LowerCase = false) {
char Buffer[17];
char *BufPtr = std::end(Buffer);
if (X == 0) *--BufPtr = '0';
while (X) {
unsigned char Mod = static_cast<unsigned char>(X) & 15;
*--BufPtr = hexdigit(Mod, LowerCase);
X >>= 4;
}
return BufPtr;
return std::string(BufPtr, std::end(Buffer));
}
static inline std::string utohexstr(uint64_t X, bool LowerCase = false) {
char Buffer[17];
return utohex_buffer(X, Buffer+17, LowerCase);
}
/// Convert buffer \p Input to its hexadecimal representation.
/// The returned string is double the size of \p Input.
static inline std::string toHex(StringRef Input) {
static const char *const LUT = "0123456789ABCDEF";
size_t Length = Input.size();
static inline std::string utostr_32(uint32_t X, bool isNeg = false) {
char Buffer[11];
char *BufPtr = Buffer+11;
if (X == 0) *--BufPtr = '0'; // Handle special case...
while (X) {
*--BufPtr = '0' + char(X % 10);
X /= 10;
std::string Output;
Output.reserve(2 * Length);
for (size_t i = 0; i < Length; ++i) {
const unsigned char c = Input[i];
Output.push_back(LUT[c >> 4]);
Output.push_back(LUT[c & 15]);
}
if (isNeg) *--BufPtr = '-'; // Add negative sign...
return std::string(BufPtr, Buffer+11);
return Output;
}
static inline std::string utostr(uint64_t X, bool isNeg = false) {
char Buffer[21];
char *BufPtr = Buffer+21;
char *BufPtr = std::end(Buffer);
if (X == 0) *--BufPtr = '0'; // Handle special case...
@@ -102,7 +87,7 @@ static inline std::string utostr(uint64_t X, bool isNeg = false) {
}
if (isNeg) *--BufPtr = '-'; // Add negative sign...
return std::string(BufPtr, Buffer+21);
return std::string(BufPtr, std::end(Buffer));
}
@@ -207,6 +192,6 @@ inline std::string join(IteratorT Begin, IteratorT End, StringRef Separator) {
return join_impl(Begin, End, Separator, tag());
}
} // namespace llvm
} // End llvm namespace
#endif