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Use __builtin_ctz and __builtin_clz in dlmalloc #401

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merged 1 commit into from
Mar 6, 2023
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Use __builtin_ctz and __builtin_clz in dlmalloc #401

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4 changes: 2 additions & 2 deletions dlmalloc/src/malloc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2839,7 +2839,7 @@ static size_t traverse_and_check(mstate m);
#define treebin_at(M,i) (&((M)->treebins[i]))

/* assign tree index for size S to variable I. Use x86 asm if possible */
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__) || defined(__wasm__))
#define compute_tree_index(S, I)\
{\
unsigned int X = S >> TREEBIN_SHIFT;\
Expand Down Expand Up @@ -2942,7 +2942,7 @@ static size_t traverse_and_check(mstate m);

/* index corresponding to given bit. Use x86 asm if possible */

#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__) || defined(__wasm__))
#define compute_bit2idx(X, I)\
{\
unsigned int J;\
Expand Down