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pkg/highway: vendor and modify to remain all libc usage

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This commit is contained in:
Mitchell Hashimoto
2026-04-23 20:23:45 -07:00
parent bdb164a6e5
commit f3f9af6129
7 changed files with 210 additions and 93 deletions
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20
src/simd/codepoint_width.cpp
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@@ -7,8 +7,14 @@
#ifndef GHOSTTY_SIMD_CPW_HELPERS_
#define GHOSTTY_SIMD_CPW_HELPERS_
#include <assert.h>
#include <stddef.h>
#ifdef NDEBUG
#define GHOSTTY_SIMD_ASSERT(cond) ((void)0)
#else
#define GHOSTTY_SIMD_ASSERT(cond) \
do { \
if (!(cond)) __builtin_trap();\
} while (0)
#endif
// Replacement for std::size() that works without libc++.
template <typename T, size_t N>
@@ -249,8 +255,8 @@ static_assert(array_size(nsm_gte16) == array_size(nsm_lte16));
/// Handles 16-bit codepoints.
template <class D, typename T = uint16_t>
int8_t CodepointWidth16(D d, uint16_t input) {
assert(input > 0xFF);
assert(input <= 0xFFFF);
GHOSTTY_SIMD_ASSERT(input > 0xFF);
GHOSTTY_SIMD_ASSERT(input <= 0xFFFF);
const size_t N = hn::Lanes(d);
const hn::Vec<D> input_vec = Set(d, input);
@@ -287,7 +293,7 @@ int8_t CodepointWidth16(D d, uint16_t input) {
return 2;
}
}
assert(i >= 7); // We should have checked all the ranges.
GHOSTTY_SIMD_ASSERT(i >= 7); // We should have checked all the ranges.
}
{
@@ -353,7 +359,7 @@ int8_t CodepointWidth16(D d, uint16_t input) {
/// Handles codepoints larger than 16-bit.
template <class D, typename T = uint32_t>
int8_t CodepointWidth32(D d, T input) {
assert(input > 0xFFFF);
GHOSTTY_SIMD_ASSERT(input > 0xFFFF);
const size_t N = hn::Lanes(d);
const hn::Vec<D> input_vec = Set(d, input);
@@ -379,7 +385,7 @@ int8_t CodepointWidth32(D d, T input) {
return 2;
}
}
assert(i >= 2); // We should have checked all the ranges.
GHOSTTY_SIMD_ASSERT(i >= 2); // We should have checked all the ranges.
}
{