X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=include%2Fllvm%2FSupport%2FLEB128.h;h=6eb34eec8a6c545395e636f6582fea756e7f23b8;hp=ec23d5747becfd497ccb7f78858c0526f706900b;hb=80668d18e8064560bb6c227cde4e2a01d32e683e;hpb=f01742d03fb034e50f2a7717fb1325644e02ca72

diff --git a/include/llvm/Support/LEB128.h b/include/llvm/Support/LEB128.h
index ec23d5747be..6eb34eec8a6 100644
--- a/include/llvm/Support/LEB128.h
+++ b/include/llvm/Support/LEB128.h
@@ -20,7 +20,7 @@
 namespace llvm {
 
 /// Utility function to encode a SLEB128 value to an output stream.
-static inline void encodeSLEB128(int64_t Value, raw_ostream &OS) {
+inline void encodeSLEB128(int64_t Value, raw_ostream &OS) {
   bool More;
   do {
     uint8_t Byte = Value & 0x7f;
@@ -35,8 +35,8 @@ static inline void encodeSLEB128(int64_t Value, raw_ostream &OS) {
 }
 
 /// Utility function to encode a ULEB128 value to an output stream.
-static inline void encodeULEB128(uint64_t Value, raw_ostream &OS,
-                                 unsigned Padding = 0) {
+inline void encodeULEB128(uint64_t Value, raw_ostream &OS,
+                          unsigned Padding = 0) {
   do {
     uint8_t Byte = Value & 0x7f;
     Value >>= 7;
@@ -55,8 +55,8 @@ static inline void encodeULEB128(uint64_t Value, raw_ostream &OS,
 
 /// Utility function to encode a ULEB128 value to a buffer. Returns
 /// the length in bytes of the encoded value.
-static inline unsigned encodeULEB128(uint64_t Value, uint8_t *p,
-                                     unsigned Padding = 0) {
+inline unsigned encodeULEB128(uint64_t Value, uint8_t *p,
+                              unsigned Padding = 0) {
   uint8_t *orig_p = p;
   do {
     uint8_t Byte = Value & 0x7f;
@@ -77,7 +77,7 @@ static inline unsigned encodeULEB128(uint64_t Value, uint8_t *p,
 
 
 /// Utility function to decode a ULEB128 value.
-static inline uint64_t decodeULEB128(const uint8_t *p, unsigned *n = 0) {
+inline uint64_t decodeULEB128(const uint8_t *p, unsigned *n = 0) {
   const uint8_t *orig_p = p;
   uint64_t Value = 0;
   unsigned Shift = 0;
@@ -90,6 +90,31 @@ static inline uint64_t decodeULEB128(const uint8_t *p, unsigned *n = 0) {
   return Value;
 }
 
+/// Utility function to get the size of the ULEB128-encoded value.
+inline unsigned getULEB128Size(uint64_t Value) {
+  unsigned Size = 0;
+  do {
+    Value >>= 7;
+    Size += sizeof(int8_t);
+  } while (Value);
+  return Size;
+}
+
+/// Utility function to get the size of the SLEB128-encoded value.
+inline unsigned getSLEB128Size(int64_t Value) {
+  unsigned Size = 0;
+  int Sign = Value >> (8 * sizeof(Value) - 1);
+  bool IsMore;
+
+  do {
+    unsigned Byte = Value & 0x7f;
+    Value >>= 7;
+    IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
+    Size += sizeof(int8_t);
+  } while (IsMore);
+  return Size;
+}
+
 }  // namespace llvm
 
 #endif  // LLVM_SYSTEM_LEB128_H