mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 00:29:20 +00:00
BitstreamWriter: Change primary output buffer to be a SmallVector instead of an
std::vector. - Good for 1-2% speedup on writing PCH for Cocoa.h. - Clang side API match to follow shortly, there wasn't an easy way to make this non-breaking. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151750 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
a8d16bbdfb
commit
acbceeae4d
@ -16,13 +16,14 @@
|
||||
#define BITSTREAM_WRITER_H
|
||||
|
||||
#include "llvm/ADT/StringRef.h"
|
||||
#include "llvm/ADT/SmallVector.h"
|
||||
#include "llvm/Bitcode/BitCodes.h"
|
||||
#include <vector>
|
||||
|
||||
namespace llvm {
|
||||
|
||||
class BitstreamWriter {
|
||||
std::vector<unsigned char> &Out;
|
||||
SmallVectorImpl<char> &Out;
|
||||
|
||||
/// CurBit - Always between 0 and 31 inclusive, specifies the next bit to use.
|
||||
unsigned CurBit;
|
||||
@ -90,7 +91,7 @@ class BitstreamWriter {
|
||||
}
|
||||
|
||||
public:
|
||||
explicit BitstreamWriter(std::vector<unsigned char> &O)
|
||||
explicit BitstreamWriter(SmallVectorImpl<char> &O)
|
||||
: Out(O), CurBit(0), CurValue(0), CurCodeSize(2) {}
|
||||
|
||||
~BitstreamWriter() {
|
||||
|
@ -1774,8 +1774,7 @@ enum {
|
||||
DarwinBCHeaderSize = 5*4
|
||||
};
|
||||
|
||||
static void WriteInt32ToBuffer(uint32_t Value,
|
||||
std::vector<unsigned char> &Buffer,
|
||||
static void WriteInt32ToBuffer(uint32_t Value, SmallVectorImpl<char> &Buffer,
|
||||
uint32_t &Position) {
|
||||
Buffer[Position + 0] = (unsigned char) (Value >> 0);
|
||||
Buffer[Position + 1] = (unsigned char) (Value >> 8);
|
||||
@ -1784,7 +1783,7 @@ static void WriteInt32ToBuffer(uint32_t Value,
|
||||
Position += 4;
|
||||
}
|
||||
|
||||
static void EmitDarwinBCHeaderAndTrailer(std::vector<unsigned char> &Buffer,
|
||||
static void EmitDarwinBCHeaderAndTrailer(SmallVectorImpl<char> &Buffer,
|
||||
const Triple &TT) {
|
||||
unsigned CPUType = ~0U;
|
||||
|
||||
@ -1833,7 +1832,7 @@ static void EmitDarwinBCHeaderAndTrailer(std::vector<unsigned char> &Buffer,
|
||||
/// WriteBitcodeToFile - Write the specified module to the specified output
|
||||
/// stream.
|
||||
void llvm::WriteBitcodeToFile(const Module *M, raw_ostream &Out) {
|
||||
std::vector<unsigned char> Buffer;
|
||||
SmallVector<char, 1024> Buffer;
|
||||
Buffer.reserve(256*1024);
|
||||
|
||||
// If this is darwin or another generic macho target, reserve space for the
|
||||
|
Loading…
Reference in New Issue
Block a user