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Add loop building utilities for ASMJIT

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Refactor copy_data_swap_u32 a bit
This commit is contained in:
Nekotekina 2022-01-24 22:22:42 +03:00
parent 11ee1f3eb2
commit 0db9850a73
2 changed files with 137 additions and 98 deletions
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54
Utilities/JIT.h
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@ -209,6 +209,60 @@ namespace asmjit
static_cast<void>(args);
#endif
}
#if defined(ARCH_X64)
template <uint Size>
struct native_vec;
template <>
struct native_vec<16> { using type = x86::Xmm; };
template <>
struct native_vec<32> { using type = x86::Ymm; };
template <>
struct native_vec<64> { using type = x86::Zmm; };
template <uint Size>
using native_vec_t = typename native_vec<Size>::type;
// if (count > step) { for (; ctr < (count - step); ctr += step) {...} count -= ctr; }
inline void build_incomplete_loop(native_asm& c, auto ctr, auto count, u32 step, auto&& build)
{
asmjit::Label body = c.newLabel();
asmjit::Label exit = c.newLabel();
ensure((step & (step - 1)) == 0);
c.cmp(count, step);
c.jbe(exit);
c.sub(count, step);
c.align(asmjit::AlignMode::kCode, 16);
c.bind(body);
build();
c.add(ctr, step);
c.sub(count, step);
c.ja(body);
c.add(count, step);
c.bind(exit);
}
// for (; count > 0; ctr++, count--)
inline void build_loop(native_asm& c, auto ctr, auto count, auto&& build)
{
asmjit::Label body = c.newLabel();
asmjit::Label exit = c.newLabel();
c.test(count, count);
c.jz(exit);
c.align(asmjit::AlignMode::kCode, 16);
c.bind(body);
build();
c.inc(ctr);
c.sub(count, 1);
c.ja(body);
c.bind(exit);
}
#endif
}
// Build runtime function with asmjit::X86Assembler