Update V8 to r5675 as required by WebKit r70209
Change-Id: Ib10adb470d41ca8c109ead5fc893b880e18d489f
diff --git a/src/cached-powers.h b/src/cached-powers.h
index 314ccca..0c78343 100644
--- a/src/cached-powers.h
+++ b/src/cached-powers.h
@@ -33,86 +33,10 @@
namespace v8 {
namespace internal {
-struct CachedPower {
- uint64_t significand;
- int16_t binary_exponent;
- int16_t decimal_exponent;
-};
-
-// The following defines implement the interface between this file and the
-// generated 'powers_ten.h'.
-// GRISU_CACHE_NAME(1) contains all possible cached powers.
-// GRISU_CACHE_NAME(i) contains GRISU_CACHE_NAME(1) where only every 'i'th
-// element is kept. More formally GRISU_CACHE_NAME(i) contains the elements j*i
-// with 0 <= j < k with k such that j*k < the size of GRISU_CACHE_NAME(1).
-// The higher 'i' is the fewer elements we use.
-// Given that there are less elements, the exponent-distance between two
-// elements in the cache grows. The variable GRISU_CACHE_MAX_DISTANCE(i) stores
-// the maximum distance between two elements.
-#define GRISU_CACHE_STRUCT CachedPower
-#define GRISU_CACHE_NAME(i) kCachedPowers##i
-#define GRISU_CACHE_MAX_DISTANCE(i) kCachedPowersMaxDistance##i
-#define GRISU_CACHE_OFFSET kCachedPowerOffset
-#define GRISU_UINT64_C V8_2PART_UINT64_C
-// The following include imports the precompiled cached powers.
-#include "powers-ten.h" // NOLINT
-
-static const double kD_1_LOG2_10 = 0.30102999566398114; // 1 / lg(10)
-
-// We can't use a function since we reference variables depending on the 'i'.
-// This way the compiler is able to see at compile time that only one
-// cache-array variable is used and thus can remove all the others.
-#define COMPUTE_FOR_CACHE(i) \
- if (!found && (gamma - alpha + 1 >= GRISU_CACHE_MAX_DISTANCE(i))) { \
- int kQ = DiyFp::kSignificandSize; \
- double k = ceiling((alpha - e + kQ - 1) * kD_1_LOG2_10); \
- int index = (GRISU_CACHE_OFFSET + static_cast<int>(k) - 1) / i + 1; \
- cached_power = GRISU_CACHE_NAME(i)[index]; \
- found = true; \
- } \
-
-static void GetCachedPower(int e, int alpha, int gamma, int* mk, DiyFp* c_mk) {
- // The following if statement should be optimized by the compiler so that only
- // one array is referenced and the others are not included in the object file.
- bool found = false;
- CachedPower cached_power;
- COMPUTE_FOR_CACHE(20);
- COMPUTE_FOR_CACHE(19);
- COMPUTE_FOR_CACHE(18);
- COMPUTE_FOR_CACHE(17);
- COMPUTE_FOR_CACHE(16);
- COMPUTE_FOR_CACHE(15);
- COMPUTE_FOR_CACHE(14);
- COMPUTE_FOR_CACHE(13);
- COMPUTE_FOR_CACHE(12);
- COMPUTE_FOR_CACHE(11);
- COMPUTE_FOR_CACHE(10);
- COMPUTE_FOR_CACHE(9);
- COMPUTE_FOR_CACHE(8);
- COMPUTE_FOR_CACHE(7);
- COMPUTE_FOR_CACHE(6);
- COMPUTE_FOR_CACHE(5);
- COMPUTE_FOR_CACHE(4);
- COMPUTE_FOR_CACHE(3);
- COMPUTE_FOR_CACHE(2);
- COMPUTE_FOR_CACHE(1);
- if (!found) {
- UNIMPLEMENTED();
- // Silence compiler warnings.
- cached_power.significand = 0;
- cached_power.binary_exponent = 0;
- cached_power.decimal_exponent = 0;
- }
- *c_mk = DiyFp(cached_power.significand, cached_power.binary_exponent);
- *mk = cached_power.decimal_exponent;
- ASSERT((alpha <= c_mk->e() + e) && (c_mk->e() + e <= gamma));
-}
-#undef GRISU_REDUCTION
-#undef GRISU_CACHE_STRUCT
-#undef GRISU_CACHE_NAME
-#undef GRISU_CACHE_MAX_DISTANCE
-#undef GRISU_CACHE_OFFSET
-#undef GRISU_UINT64_C
+void GetCachedPowerForBinaryExponentRange(int min_exponent,
+ int max_exponent,
+ DiyFp* power,
+ int* decimal_exponent);
} } // namespace v8::internal