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Added specialized negate_and_test and complement_and_test for MSVC 32-bit x86 target.

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This commit is contained in:
Andrey Semashev
2018-02-04 03:11:10 +03:00
parent d1ea283a6b
commit fe57fa0375
1 changed files with 126 additions and 0 deletions
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126
include/boost/atomic/detail/extra_ops_msvc_x86.hpp
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@@ -136,6 +136,27 @@ struct extra_operations< Base, 1u, Signed > :
return old_val;
}
static BOOST_FORCEINLINE bool negate_and_test(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
bool result;
__asm
{
mov ecx, storage
movzx eax, byte ptr [ecx]
align 16
again:
mov edx, eax
neg dl
lock cmpxchg byte ptr [ecx], dl
jne again
test dl, dl
setnz result
};
base_type::fence_after(order);
return result;
}
static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
@@ -173,6 +194,27 @@ struct extra_operations< Base, 1u, Signed > :
return old_val;
}
static BOOST_FORCEINLINE bool complement_and_test(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
bool result;
__asm
{
mov ecx, storage
movzx eax, byte ptr [ecx]
align 16
again:
mov edx, eax
not dl
lock cmpxchg byte ptr [ecx], dl
jne again
test dl, dl
setnz result
};
base_type::fence_after(order);
return result;
}
static BOOST_FORCEINLINE void opaque_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
@@ -377,6 +419,27 @@ struct extra_operations< Base, 2u, Signed > :
return old_val;
}
static BOOST_FORCEINLINE bool negate_and_test(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
bool result;
__asm
{
mov ecx, storage
movzx eax, word ptr [ecx]
align 16
again:
mov edx, eax
neg dx
lock cmpxchg word ptr [ecx], dx
jne again
test dx, dx
setnz result
};
base_type::fence_after(order);
return result;
}
static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
@@ -414,6 +477,27 @@ struct extra_operations< Base, 2u, Signed > :
return old_val;
}
static BOOST_FORCEINLINE bool complement_and_test(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
bool result;
__asm
{
mov ecx, storage
movzx eax, word ptr [ecx]
align 16
again:
mov edx, eax
not dx
lock cmpxchg word ptr [ecx], dx
jne again
test dx, dx
setnz result
};
base_type::fence_after(order);
return result;
}
static BOOST_FORCEINLINE void opaque_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
@@ -618,6 +702,27 @@ struct extra_operations< Base, 4u, Signed > :
return old_val;
}
static BOOST_FORCEINLINE bool negate_and_test(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
bool result;
__asm
{
mov ecx, storage
mov eax, dword ptr [ecx]
align 16
again:
mov edx, eax
neg edx
lock cmpxchg dword ptr [ecx], edx
jne again
test edx, edx
setnz result
};
base_type::fence_after(order);
return result;
}
static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
@@ -655,6 +760,27 @@ struct extra_operations< Base, 4u, Signed > :
return old_val;
}
static BOOST_FORCEINLINE bool complement_and_test(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);
bool result;
__asm
{
mov ecx, storage
mov eax, dword ptr [ecx]
align 16
again:
mov edx, eax
not edx
lock cmpxchg dword ptr [ecx], edx
jne again
test edx, edx
setnz result
};
base_type::fence_after(order);
return result;
}
static BOOST_FORCEINLINE void opaque_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
{
base_type::fence_before(order);