mirror of
https://github.com/oven-sh/bun
synced 2026-02-09 10:28:47 +00:00
41de7a3bfb
## Summary - Update LLVM version references across build scripts, Dockerfiles, CI, Nix configs, and documentation - Fix LLVM 21 `-Wcharacter-conversion` errors in WebKit bindings: - `EncodingTables.h`: pragma for intentional char32_t/char16_t comparisons - `TextCodecCJK.cpp`: widen `gb18030AsymmetricEncode` param to char32_t - `URLPatternParser`: widen `isValidNameCodepoint` param to char32_t, cast for `startsWith` - Fix `__libcpp_verbose_abort` noexcept mismatch (LLVM 21 uses `_NOEXCEPT`) - Fix dangling pointer in `BunJSCModule.h` (`toCString` temporary lifetime) - Remove `useMathSumPreciseMethod` (removed upstream in JSC) **Before merging:** Merge https://github.com/oven-sh/WebKit/pull/153 first, then update `WEBKIT_VERSION` in `cmake/tools/SetupWebKit.cmake` to point to the merged commit. ## Test plan - [ ] Build bun debug on macOS with LLVM 21 - [ ] Build bun on Linux (glibc) - [ ] Build bun on Linux (musl) - [ ] Build bun on Windows - [ ] Run test suite Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
143 lines
4.6 KiB
C++
143 lines
4.6 KiB
C++
#include "root.h"
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enum class X86CPUFeature : uint8_t {
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sse42 = 1,
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popcnt = 2,
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avx = 3,
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avx2 = 4,
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avx512 = 5,
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};
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enum class AArch64CPUFeature : uint8_t {
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neon = 1,
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fp = 2,
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aes = 3,
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crc32 = 4,
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atomics = 5,
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sve = 6,
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};
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#if CPU(X86_64)
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#if OS(WINDOWS)
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#include <windows.h>
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#endif
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static uint8_t x86_cpu_features()
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{
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uint8_t features = 0;
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#if OS(WINDOWS)
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if (IsProcessorFeaturePresent(PF_SSE4_2_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::sse42);
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if (IsProcessorFeaturePresent(PF_AVX_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::avx);
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if (IsProcessorFeaturePresent(PF_AVX2_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::avx2);
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if (IsProcessorFeaturePresent(PF_AVX512F_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::avx512);
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#else
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#if __has_builtin(__builtin_cpu_supports)
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__builtin_cpu_init();
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if (__builtin_cpu_supports("sse4.2"))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::sse42);
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if (__builtin_cpu_supports("popcnt"))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::popcnt);
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if (__builtin_cpu_supports("avx"))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::avx);
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if (__builtin_cpu_supports("avx2"))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::avx2);
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if (__builtin_cpu_supports("avx512f"))
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features |= 1 << static_cast<uint8_t>(X86CPUFeature::avx512);
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#endif
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#endif
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return features;
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}
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#endif
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#if CPU(ARM64)
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#if OS(WINDOWS)
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#include <windows.h>
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#elif OS(MACOS)
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#include <sys/sysctl.h>
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#elif OS(LINUX)
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#include <sys/auxv.h>
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#include <asm/hwcap.h>
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#endif
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static uint8_t aarch64_cpu_features()
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{
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uint8_t features = 0;
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#if OS(WINDOWS)
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// FP is mandatory on AArch64 — no separate PF_ constant exists for it
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::fp);
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if (IsProcessorFeaturePresent(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::neon);
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if (IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::aes);
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if (IsProcessorFeaturePresent(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::crc32);
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if (IsProcessorFeaturePresent(PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::atomics);
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if (IsProcessorFeaturePresent(PF_ARM_SVE_INSTRUCTIONS_AVAILABLE))
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::sve);
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#elif OS(MACOS)
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int value = 0;
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size_t size = sizeof(value);
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if (sysctlbyname("hw.optional.AdvSIMD", &value, &size, NULL, 0) == 0 && value == 1)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::neon);
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if (sysctlbyname("hw.optional.floatingpoint", &value, &size, NULL, 0) == 0 && value == 1)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::fp);
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if (sysctlbyname("hw.optional.arm.FEAT_AES", &value, &size, NULL, 0) == 0 && value == 1)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::aes);
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if (sysctlbyname("hw.optional.armv8_crc32", &value, &size, NULL, 0) == 0 && value == 1)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::crc32);
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if (sysctlbyname("hw.optional.arm.FEAT_LSE", &value, &size, NULL, 0) == 0 && value == 1)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::atomics);
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if (sysctlbyname("hw.optional.arm.FEAT_SVE", &value, &size, NULL, 0) == 0 && value == 1)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::sve);
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#elif OS(LINUX)
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unsigned long hwcaps = getauxval(AT_HWCAP);
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if (hwcaps & HWCAP_ASIMD)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::neon);
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if (hwcaps & HWCAP_FP)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::fp);
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if (hwcaps & HWCAP_AES)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::aes);
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if (hwcaps & HWCAP_CRC32)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::crc32);
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if (hwcaps & HWCAP_ATOMICS)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::atomics);
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if (hwcaps & HWCAP_SVE)
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features |= 1 << static_cast<uint8_t>(AArch64CPUFeature::sve);
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#endif
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return features;
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}
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#endif
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extern "C" uint8_t bun_cpu_features()
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{
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#if CPU(X86_64)
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return x86_cpu_features();
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#elif CPU(ARM64)
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return aarch64_cpu_features();
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#else
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#error "Unknown architecture"
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#endif
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}
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