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count_leading_zeros fix

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This commit is contained in:
Blaise Tine 2024-09-28 20:15:03 -07:00
parent 87e613d29d
commit b634f9f47d
2 changed files with 10 additions and 10 deletions
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4
sim/common/bitmanip.h
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@ -20,9 +20,9 @@ template <typename T>
constexpr uint32_t count_leading_zeros(T value) {
static_assert(std::is_integral<T>::value, "invalid data type");
if constexpr (sizeof(T) > 4) {
return value ? __builtin_clzll(value) : (sizeof(T) * 8);
return value ? __builtin_clzll(value) - (64 - sizeof(T) * 8) : sizeof(T) * 8;
} else {
return value ? __builtin_clz(value) : (sizeof(T) * 8);
return value ? __builtin_clz(value) - (32 - sizeof(T) * 8) : sizeof(T) * 8;
}
}

16
sim/simx/constants.h
View file

@ -21,14 +21,14 @@
#define MEM_CLOCK_RATIO 1
#endif
#define LSU_WORD_SIZE (XLEN / 8)
#define LSU_CHANNELS NUM_LSU_LANES
#define LSU_NUM_REQS (NUM_LSU_BLOCKS * LSU_CHANNELS)
inline constexpr int LSU_WORD_SIZE = (XLEN / 8);
inline constexpr int LSU_CHANNELS = NUM_LSU_LANES;
inline constexpr int LSU_NUM_REQS = (NUM_LSU_BLOCKS * LSU_CHANNELS);
#define DCACHE_WORD_SIZE LSU_LINE_SIZE
#define DCACHE_CHANNELS UP((NUM_LSU_LANES * (XLEN / 8)) / DCACHE_WORD_SIZE)
#define DCACHE_NUM_REQS (NUM_LSU_BLOCKS * DCACHE_CHANNELS)
inline constexpr int DCACHE_WORD_SIZE = LSU_LINE_SIZE;
inline constexpr int DCACHE_CHANNELS = UP((NUM_LSU_LANES * (XLEN / 8)) / DCACHE_WORD_SIZE);
inline constexpr int DCACHE_NUM_REQS = (NUM_LSU_BLOCKS * DCACHE_CHANNELS);
#define NUM_SOCKETS UP(NUM_CORES / SOCKET_SIZE)
inline constexpr int NUM_SOCKETS = UP(NUM_CORES / SOCKET_SIZE);
#define PER_ISSUE_WARPS NUM_WARPS / ISSUE_WIDTH
inline constexpr int PER_ISSUE_WARPS = NUM_WARPS / ISSUE_WIDTH;