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Support 64-bit limbs on no-asm platforms #109

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Support 64-bit limbs on no-asm platforms #109

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6 changes: 5 additions & 1 deletion bindings/rust/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -231,7 +231,11 @@ fn main() {
cc.define("SCRATCH_LIMIT", "(45 * 1024)");
}
if !cfg!(debug_assertions) {
cc.opt_level(2);
if target_arch.eq("s390x") {
cc.opt_level(3);
} else {
cc.opt_level(2);
}
}
cc.files(&file_vec).compile("blst");

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4 changes: 3 additions & 1 deletion src/no_asm.h
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Expand Up @@ -6,6 +6,8 @@

#if LIMB_T_BITS==32
typedef unsigned long long llimb_t;
#else
typedef unsigned __int128 llimb_t;
#endif

#if !defined(__STDC_VERSION__) || __STDC_VERSION__<199901 || defined(__STDC_NO_VLA__)
Expand Down Expand Up @@ -1155,7 +1157,7 @@ limb_t div_3_limbs(const limb_t div_top[2], limb_t d_lo, limb_t d_hi)
static limb_t quot_rem_n(limb_t *div_rem, const limb_t *divisor,
limb_t quotient, size_t n)
{
__builtin_assume(n != 0 && n%2 == 0);
__builtin_assume(n != 0);
llimb_t limbx;
limb_t tmp[n+1], carry, mask, borrow;
size_t i;
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6 changes: 4 additions & 2 deletions src/vect.h
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Expand Up @@ -18,7 +18,7 @@ typedef unsigned long long limb_t;
typedef unsigned __int64 limb_t;
# define LIMB_T_BITS 64

#elif defined(__BLST_NO_ASM__) || defined(__wasm64__)
#elif defined(__wasm64__)
typedef unsigned int limb_t;
# define LIMB_T_BITS 32
# ifndef __BLST_NO_ASM__
Expand All @@ -31,8 +31,10 @@ typedef unsigned long limb_t;
# define LIMB_T_BITS 64
# else
# define LIMB_T_BITS 32
# define __BLST_NO_ASM__
# endif
# ifndef __BLST_NO_ASM__
# define __BLST_NO_ASM__
# endif
#endif

/*
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