X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FSupport%2FMathExtras.h;h=2cf7e0e5d0b3972053017ca426c8299480c7bb85;hb=00552e3875ee5f382db6c98286a241a7d0efe1b8;hp=ea3f7e095423c6c071676c365ac16c50d5174963;hpb=8fae893373df5c88badefc78fb2ffe8189e95465;p=oota-llvm.git

diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h
index ea3f7e09542..2cf7e0e5d0b 100644
--- a/include/llvm/Support/MathExtras.h
+++ b/include/llvm/Support/MathExtras.h
@@ -456,7 +456,7 @@ inline unsigned countPopulation(T Value) {
 /// Log2 - This function returns the log base 2 of the specified value
 inline double Log2(double Value) {
 #if defined(__ANDROID_API__) && __ANDROID_API__ < 18
-  return (double)__builtin_log2l(Value);
+  return __builtin_log(Value) / __builtin_log(2.0);
 #else
   return log2(Value);
 #endif
@@ -465,26 +465,26 @@ inline double Log2(double Value) {
 /// Log2_32 - This function returns the floor log base 2 of the specified value,
 /// -1 if the value is zero. (32 bit edition.)
 /// Ex. Log2_32(32) == 5, Log2_32(1) == 0, Log2_32(0) == -1, Log2_32(6) == 2
-inline size_t Log2_32(uint32_t Value) {
+inline unsigned Log2_32(uint32_t Value) {
   return 31 - countLeadingZeros(Value);
 }
 
 /// Log2_64 - This function returns the floor log base 2 of the specified value,
 /// -1 if the value is zero. (64 bit edition.)
-inline size_t Log2_64(uint64_t Value) {
+inline unsigned Log2_64(uint64_t Value) {
   return 63 - countLeadingZeros(Value);
 }
 
 /// Log2_32_Ceil - This function returns the ceil log base 2 of the specified
 /// value, 32 if the value is zero. (32 bit edition).
 /// Ex. Log2_32_Ceil(32) == 5, Log2_32_Ceil(1) == 0, Log2_32_Ceil(6) == 3
-inline size_t Log2_32_Ceil(uint32_t Value) {
+inline unsigned Log2_32_Ceil(uint32_t Value) {
   return 32 - countLeadingZeros(Value - 1);
 }
 
 /// Log2_64_Ceil - This function returns the ceil log base 2 of the specified
 /// value, 64 if the value is zero. (64 bit edition.)
-inline size_t Log2_64_Ceil(uint64_t Value) {
+inline unsigned Log2_64_Ceil(uint64_t Value) {
   return 64 - countLeadingZeros(Value - 1);
 }
 
@@ -562,7 +562,7 @@ inline uint64_t MinAlign(uint64_t A, uint64_t B) {
 ///
 /// Alignment should be a power of two.  This method rounds up, so
 /// alignAddr(7, 4) == 8 and alignAddr(8, 4) == 8.
-inline uintptr_t alignAddr(void *Addr, size_t Alignment) {
+inline uintptr_t alignAddr(const void *Addr, size_t Alignment) {
   assert(Alignment && isPowerOf2_64((uint64_t)Alignment) &&
          "Alignment is not a power of two!");
 
@@ -573,7 +573,7 @@ inline uintptr_t alignAddr(void *Addr, size_t Alignment) {
 
 /// \brief Returns the necessary adjustment for aligning \c Ptr to \c Alignment
 /// bytes, rounding up.
-inline size_t alignmentAdjustment(void *Ptr, size_t Alignment) {
+inline size_t alignmentAdjustment(const void *Ptr, size_t Alignment) {
   return alignAddr(Ptr, Alignment) - (uintptr_t)Ptr;
 }