struct Model [src]
Fields
name: []const u8
llvm_name: ?[:0]const u8
features: Feature.Set
Members
Source
pub const Model = struct {
name: []const u8,
llvm_name: ?[:0]const u8,
features: Feature.Set,
pub fn toCpu(model: *const Model, arch: Arch) Cpu {
var features = model.features;
features.populateDependencies(arch.allFeaturesList());
return .{
.arch = arch,
.model = model,
.features = features,
};
}
/// Returns the most bare-bones CPU model that is valid for `arch`. Note that this function
/// can return CPU models that are understood by LLVM, but *not* understood by Clang. If
/// Clang compatibility is important, consider using `baseline` instead.
pub fn generic(arch: Arch) *const Model {
const S = struct {
const generic_model = Model{
.name = "generic",
.llvm_name = null,
.features = Cpu.Feature.Set.empty,
};
};
return switch (arch) {
.amdgcn => &amdgcn.cpu.gfx600,
.arc => &arc.cpu.generic,
.arm, .armeb, .thumb, .thumbeb => &arm.cpu.generic,
.aarch64, .aarch64_be => &aarch64.cpu.generic,
.avr => &avr.cpu.avr1,
.bpfel, .bpfeb => &bpf.cpu.generic,
.csky => &csky.cpu.generic,
.hexagon => &hexagon.cpu.generic,
.lanai => &lanai.cpu.generic,
.loongarch32 => &loongarch.cpu.generic_la32,
.loongarch64 => &loongarch.cpu.generic_la64,
.m68k => &m68k.cpu.generic,
.mips, .mipsel => &mips.cpu.mips32,
.mips64, .mips64el => &mips.cpu.mips64,
.msp430 => &msp430.cpu.generic,
.powerpc, .powerpcle => &powerpc.cpu.ppc,
.powerpc64, .powerpc64le => &powerpc.cpu.ppc64,
.propeller => &propeller.cpu.p1,
.riscv32 => &riscv.cpu.generic_rv32,
.riscv64 => &riscv.cpu.generic_rv64,
.spirv, .spirv32, .spirv64 => &spirv.cpu.generic,
.sparc => &sparc.cpu.generic,
.sparc64 => &sparc.cpu.v9, // 64-bit SPARC needs v9 as the baseline
.s390x => &s390x.cpu.generic,
.x86 => &x86.cpu.i386,
.x86_64 => &x86.cpu.x86_64,
.nvptx, .nvptx64 => &nvptx.cpu.sm_20,
.ve => &ve.cpu.generic,
.wasm32, .wasm64 => &wasm.cpu.mvp,
.xcore => &xcore.cpu.generic,
.xtensa => &xtensa.cpu.generic,
.kalimba,
=> &S.generic_model,
};
}
/// Returns a conservative CPU model for `arch` that is expected to be compatible with the
/// vast majority of hardware available. This function is guaranteed to return CPU models
/// that are understood by both LLVM and Clang, unlike `generic`.
///
/// For certain `os` values, this function will additionally bump the baseline higher than
/// the baseline would be for `arch` in isolation; for example, for `aarch64-macos`, the
/// baseline is considered to be `apple_m1`. To avoid this behavior entirely, pass
/// `Os.Tag.freestanding`.
pub fn baseline(arch: Arch, os: Os) *const Model {
return switch (arch) {
.amdgcn => &amdgcn.cpu.gfx906,
.arm, .armeb, .thumb, .thumbeb => &arm.cpu.baseline,
.aarch64 => switch (os.tag) {
.driverkit, .macos => &aarch64.cpu.apple_m1,
.ios, .tvos => &aarch64.cpu.apple_a7,
.visionos => &aarch64.cpu.apple_m2,
.watchos => &aarch64.cpu.apple_s4,
else => generic(arch),
},
.avr => &avr.cpu.avr2,
.bpfel, .bpfeb => &bpf.cpu.v1,
.csky => &csky.cpu.ck810, // gcc/clang do not have a generic csky model.
.hexagon => &hexagon.cpu.hexagonv60, // gcc/clang do not have a generic hexagon model.
.lanai => &lanai.cpu.v11, // clang does not have a generic lanai model.
.loongarch64 => &loongarch.cpu.loongarch64,
.m68k => &m68k.cpu.M68000,
.mips, .mipsel => &mips.cpu.mips32r2,
.mips64, .mips64el => &mips.cpu.mips64r2,
.msp430 => &msp430.cpu.msp430,
.nvptx, .nvptx64 => &nvptx.cpu.sm_52,
.powerpc64le => &powerpc.cpu.ppc64le,
.riscv32 => &riscv.cpu.baseline_rv32,
.riscv64 => &riscv.cpu.baseline_rv64,
.s390x => &s390x.cpu.arch8, // gcc/clang do not have a generic s390x model.
.sparc => &sparc.cpu.v9, // glibc does not work with 'plain' v8.
.x86 => &x86.cpu.pentium4,
.x86_64 => switch (os.tag) {
.driverkit => &x86.cpu.nehalem,
.ios, .macos, .tvos, .visionos, .watchos => &x86.cpu.core2,
.ps4 => &x86.cpu.btver2,
.ps5 => &x86.cpu.znver2,
else => generic(arch),
},
.xcore => &xcore.cpu.xs1b_generic,
.wasm32, .wasm64 => &wasm.cpu.lime1,
else => generic(arch),
};
}
}