-
Notifications
You must be signed in to change notification settings - Fork 10.8k
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
[Headers][X86] Add more descriptions to ia32intrin.h and immintrin.h #77686
Conversation
ia32intrin.h gets descriptions for all remaining non-privileged intrinsic functions; the macros providing alternate names are not described. immintrin.h ditto, except for the Interlocked Exchange functions.
@llvm/pr-subscribers-backend-x86 Author: Paul T Robinson (pogo59) Changesia32intrin.h gets descriptions for all remaining non-privileged intrinsic functions; the macros providing alternate names are not described. immintrin.h ditto, except for the InterlockedExchange functions. Full diff: https://github.com/llvm/llvm-project/pull/77686.diff 2 Files Affected:
diff --git a/clang/lib/Headers/ia32intrin.h b/clang/lib/Headers/ia32intrin.h
index a8b59dfaad8980..39013e1a5bd0dd 100644
--- a/clang/lib/Headers/ia32intrin.h
+++ b/clang/lib/Headers/ia32intrin.h
@@ -58,7 +58,7 @@ __bsrd(int __A) {
return 31 - __builtin_clz((unsigned int)__A);
}
-/// Swaps the bytes in the input. Converting little endian to big endian or
+/// Swaps the bytes in the input, converting little endian to big endian or
/// vice versa.
///
/// \headerfile <x86intrin.h>
@@ -73,6 +73,16 @@ __bswapd(int __A) {
return (int)__builtin_bswap32((unsigned int)__A);
}
+/// Swaps the bytes in the input, converting little endian to big endian or
+/// vice versa.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c BSWAP instruction.
+///
+/// \param __A
+/// A 32-bit integer operand.
+/// \returns A 32-bit integer containing the swapped bytes.
static __inline__ int __DEFAULT_FN_ATTRS_CONSTEXPR
_bswap(int __A) {
return (int)__builtin_bswap32((unsigned int)__A);
@@ -173,12 +183,29 @@ __popcntq(unsigned long long __A)
#endif /* __x86_64__ */
#ifdef __x86_64__
+/// Returns the program status and control \c RFLAGS register with the \c VM
+/// and \c RF flags cleared.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c PUSHFQ + \c POPQ instruction sequence.
+///
+/// \returns The 64-bit value of the RFLAGS register.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS
__readeflags(void)
{
return __builtin_ia32_readeflags_u64();
}
+/// Writes the specified value to the program status and control \c RFLAGS
+/// register. Reserved bits are not affected.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c PUSHQ + \c POPFQ instruction sequence.
+///
+/// \param __f
+/// The 64-bit value to write to \c RFLAGS.
static __inline__ void __DEFAULT_FN_ATTRS
__writeeflags(unsigned long long __f)
{
@@ -186,12 +213,29 @@ __writeeflags(unsigned long long __f)
}
#else /* !__x86_64__ */
+/// Returns the program status and control \c EFLAGS register with the \c VM
+/// and \c RF flags cleared.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c PUSHFD + \c POPD instruction sequence.
+///
+/// \returns The 32-bit value of the EFLAGS register.
static __inline__ unsigned int __DEFAULT_FN_ATTRS
__readeflags(void)
{
return __builtin_ia32_readeflags_u32();
}
+/// Writes the specified value to the program status and control \c EFLAGS
+/// register. Reserved bits are not affected.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c PUSHD + \c POPFD instruction sequence.
+///
+/// \param __f
+/// The 32-bit value to write to \c EFLAGS.
static __inline__ void __DEFAULT_FN_ATTRS
__writeeflags(unsigned int __f)
{
@@ -341,12 +385,32 @@ __crc32q(unsigned long long __C, unsigned long long __D)
}
#endif /* __x86_64__ */
+/// Reads the specified performance monitoring counter. Refer to your
+/// processor's documentation to determine which performance counters are
+/// supported.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RDPMC instruction.
+///
+/// \param __A
+/// The performance counter to read.
+/// \returns The 64-bit value read from the performance counter.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS
__rdpmc(int __A) {
return __builtin_ia32_rdpmc(__A);
}
-/* __rdtscp */
+/// Reads the processor's time stamp counter and the \c IA32_TSC_AUX MSR
+/// \c (0xc0000103).
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RDTSCP instruction.
+///
+/// \param __A
+/// Address of where to store the 32-bit \c IA32_TSC_AUX value.
+/// \returns The 64-bit value of the time stamp counter.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS
__rdtscp(unsigned int *__A) {
return __builtin_ia32_rdtscp(__A);
@@ -361,42 +425,146 @@ _wbinvd(void) {
__builtin_ia32_wbinvd();
}
+/// Rotates an 8-bit value to the left by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c ROLB instruction.
+///
+/// \param __X
+/// The unsigned 8-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned char __DEFAULT_FN_ATTRS_CONSTEXPR
__rolb(unsigned char __X, int __C) {
return __builtin_rotateleft8(__X, __C);
}
+/// Rotates an 8-bit value to the right by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RORB instruction.
+///
+/// \param __X
+/// The unsigned 8-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned char __DEFAULT_FN_ATTRS_CONSTEXPR
__rorb(unsigned char __X, int __C) {
return __builtin_rotateright8(__X, __C);
}
+/// Rotates a 16-bit value to the left by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c ROLW instruction.
+///
+/// \param __X
+/// The unsigned 16-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned short __DEFAULT_FN_ATTRS_CONSTEXPR
__rolw(unsigned short __X, int __C) {
return __builtin_rotateleft16(__X, __C);
}
+/// Rotates a 16-bit value to the right by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RORW instruction.
+///
+/// \param __X
+/// The unsigned 16-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned short __DEFAULT_FN_ATTRS_CONSTEXPR
__rorw(unsigned short __X, int __C) {
return __builtin_rotateright16(__X, __C);
}
+/// Rotates a 32-bit value to the left by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c ROLD instruction.
+///
+/// \param __X
+/// The unsigned 32-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned int __DEFAULT_FN_ATTRS_CONSTEXPR
__rold(unsigned int __X, int __C) {
return __builtin_rotateleft32(__X, (unsigned int)__C);
}
+/// Rotates a 32-bit value to the right by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RORD instruction.
+///
+/// \param __X
+/// The unsigned 32-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned int __DEFAULT_FN_ATTRS_CONSTEXPR
__rord(unsigned int __X, int __C) {
return __builtin_rotateright32(__X, (unsigned int)__C);
}
#ifdef __x86_64__
+/// Rotates a 64-bit value to the left by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c ROLQ instruction.
+///
+/// \param __X
+/// The unsigned 64-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS_CONSTEXPR
__rolq(unsigned long long __X, int __C) {
return __builtin_rotateleft64(__X, (unsigned long long)__C);
}
+/// Rotates a 64-bit value to the right by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RORQ instruction.
+///
+/// \param __X
+/// The unsigned 64-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS_CONSTEXPR
__rorq(unsigned long long __X, int __C) {
return __builtin_rotateright64(__X, (unsigned long long)__C);
diff --git a/clang/lib/Headers/immintrin.h b/clang/lib/Headers/immintrin.h
index 0149a1cdea633b..27800f7a8202c1 100644
--- a/clang/lib/Headers/immintrin.h
+++ b/clang/lib/Headers/immintrin.h
@@ -490,6 +490,15 @@ _writegsbase_u64(unsigned long long __V)
* field inside of it.
*/
+/// Load a 16-bit value from memory and swap its bytes.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the 16-bit value to load.
+/// \returns The byte-swapped value.
static __inline__ short __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_loadbe_i16(void const * __P) {
struct __loadu_i16 {
@@ -498,6 +507,16 @@ _loadbe_i16(void const * __P) {
return (short)__builtin_bswap16(((const struct __loadu_i16*)__P)->__v);
}
+/// Swap the bytes of a 16-bit value and store it to memory.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the memory for storing the swapped value.
+/// \param __D
+/// The 16-bit value to be byte-swapped.
static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_storebe_i16(void * __P, short __D) {
struct __storeu_i16 {
@@ -506,6 +525,15 @@ _storebe_i16(void * __P, short __D) {
((struct __storeu_i16*)__P)->__v = __builtin_bswap16((unsigned short)__D);
}
+/// Load a 32-bit value from memory and swap its bytes.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the 32-bit value to load.
+/// \returns The byte-swapped value.
static __inline__ int __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_loadbe_i32(void const * __P) {
struct __loadu_i32 {
@@ -514,6 +542,16 @@ _loadbe_i32(void const * __P) {
return (int)__builtin_bswap32(((const struct __loadu_i32*)__P)->__v);
}
+/// Swap the bytes of a 32-bit value and store it to memory.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the memory for storing the swapped value.
+/// \param __D
+/// The 32-bit value to be byte-swapped.
static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_storebe_i32(void * __P, int __D) {
struct __storeu_i32 {
@@ -523,6 +561,15 @@ _storebe_i32(void * __P, int __D) {
}
#ifdef __x86_64__
+/// Load a 64-bit value from memory and swap its bytes.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the 64-bit value to load.
+/// \returns The byte-swapped value.
static __inline__ long long __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_loadbe_i64(void const * __P) {
struct __loadu_i64 {
@@ -531,6 +578,16 @@ _loadbe_i64(void const * __P) {
return (long long)__builtin_bswap64(((const struct __loadu_i64*)__P)->__v);
}
+/// Swap the bytes of a 64-bit value and store it to memory.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the memory for storing the swapped value.
+/// \param __D
+/// The 64-bit value to be byte-swapped.
static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_storebe_i64(void * __P, long long __D) {
struct __storeu_i64 {
|
@llvm/pr-subscribers-clang Author: Paul T Robinson (pogo59) Changesia32intrin.h gets descriptions for all remaining non-privileged intrinsic functions; the macros providing alternate names are not described. immintrin.h ditto, except for the InterlockedExchange functions. Full diff: https://github.com/llvm/llvm-project/pull/77686.diff 2 Files Affected:
diff --git a/clang/lib/Headers/ia32intrin.h b/clang/lib/Headers/ia32intrin.h
index a8b59dfaad8980..39013e1a5bd0dd 100644
--- a/clang/lib/Headers/ia32intrin.h
+++ b/clang/lib/Headers/ia32intrin.h
@@ -58,7 +58,7 @@ __bsrd(int __A) {
return 31 - __builtin_clz((unsigned int)__A);
}
-/// Swaps the bytes in the input. Converting little endian to big endian or
+/// Swaps the bytes in the input, converting little endian to big endian or
/// vice versa.
///
/// \headerfile <x86intrin.h>
@@ -73,6 +73,16 @@ __bswapd(int __A) {
return (int)__builtin_bswap32((unsigned int)__A);
}
+/// Swaps the bytes in the input, converting little endian to big endian or
+/// vice versa.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c BSWAP instruction.
+///
+/// \param __A
+/// A 32-bit integer operand.
+/// \returns A 32-bit integer containing the swapped bytes.
static __inline__ int __DEFAULT_FN_ATTRS_CONSTEXPR
_bswap(int __A) {
return (int)__builtin_bswap32((unsigned int)__A);
@@ -173,12 +183,29 @@ __popcntq(unsigned long long __A)
#endif /* __x86_64__ */
#ifdef __x86_64__
+/// Returns the program status and control \c RFLAGS register with the \c VM
+/// and \c RF flags cleared.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c PUSHFQ + \c POPQ instruction sequence.
+///
+/// \returns The 64-bit value of the RFLAGS register.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS
__readeflags(void)
{
return __builtin_ia32_readeflags_u64();
}
+/// Writes the specified value to the program status and control \c RFLAGS
+/// register. Reserved bits are not affected.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c PUSHQ + \c POPFQ instruction sequence.
+///
+/// \param __f
+/// The 64-bit value to write to \c RFLAGS.
static __inline__ void __DEFAULT_FN_ATTRS
__writeeflags(unsigned long long __f)
{
@@ -186,12 +213,29 @@ __writeeflags(unsigned long long __f)
}
#else /* !__x86_64__ */
+/// Returns the program status and control \c EFLAGS register with the \c VM
+/// and \c RF flags cleared.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c PUSHFD + \c POPD instruction sequence.
+///
+/// \returns The 32-bit value of the EFLAGS register.
static __inline__ unsigned int __DEFAULT_FN_ATTRS
__readeflags(void)
{
return __builtin_ia32_readeflags_u32();
}
+/// Writes the specified value to the program status and control \c EFLAGS
+/// register. Reserved bits are not affected.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c PUSHD + \c POPFD instruction sequence.
+///
+/// \param __f
+/// The 32-bit value to write to \c EFLAGS.
static __inline__ void __DEFAULT_FN_ATTRS
__writeeflags(unsigned int __f)
{
@@ -341,12 +385,32 @@ __crc32q(unsigned long long __C, unsigned long long __D)
}
#endif /* __x86_64__ */
+/// Reads the specified performance monitoring counter. Refer to your
+/// processor's documentation to determine which performance counters are
+/// supported.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RDPMC instruction.
+///
+/// \param __A
+/// The performance counter to read.
+/// \returns The 64-bit value read from the performance counter.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS
__rdpmc(int __A) {
return __builtin_ia32_rdpmc(__A);
}
-/* __rdtscp */
+/// Reads the processor's time stamp counter and the \c IA32_TSC_AUX MSR
+/// \c (0xc0000103).
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RDTSCP instruction.
+///
+/// \param __A
+/// Address of where to store the 32-bit \c IA32_TSC_AUX value.
+/// \returns The 64-bit value of the time stamp counter.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS
__rdtscp(unsigned int *__A) {
return __builtin_ia32_rdtscp(__A);
@@ -361,42 +425,146 @@ _wbinvd(void) {
__builtin_ia32_wbinvd();
}
+/// Rotates an 8-bit value to the left by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c ROLB instruction.
+///
+/// \param __X
+/// The unsigned 8-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned char __DEFAULT_FN_ATTRS_CONSTEXPR
__rolb(unsigned char __X, int __C) {
return __builtin_rotateleft8(__X, __C);
}
+/// Rotates an 8-bit value to the right by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RORB instruction.
+///
+/// \param __X
+/// The unsigned 8-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned char __DEFAULT_FN_ATTRS_CONSTEXPR
__rorb(unsigned char __X, int __C) {
return __builtin_rotateright8(__X, __C);
}
+/// Rotates a 16-bit value to the left by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c ROLW instruction.
+///
+/// \param __X
+/// The unsigned 16-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned short __DEFAULT_FN_ATTRS_CONSTEXPR
__rolw(unsigned short __X, int __C) {
return __builtin_rotateleft16(__X, __C);
}
+/// Rotates a 16-bit value to the right by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RORW instruction.
+///
+/// \param __X
+/// The unsigned 16-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned short __DEFAULT_FN_ATTRS_CONSTEXPR
__rorw(unsigned short __X, int __C) {
return __builtin_rotateright16(__X, __C);
}
+/// Rotates a 32-bit value to the left by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c ROLD instruction.
+///
+/// \param __X
+/// The unsigned 32-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned int __DEFAULT_FN_ATTRS_CONSTEXPR
__rold(unsigned int __X, int __C) {
return __builtin_rotateleft32(__X, (unsigned int)__C);
}
+/// Rotates a 32-bit value to the right by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RORD instruction.
+///
+/// \param __X
+/// The unsigned 32-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned int __DEFAULT_FN_ATTRS_CONSTEXPR
__rord(unsigned int __X, int __C) {
return __builtin_rotateright32(__X, (unsigned int)__C);
}
#ifdef __x86_64__
+/// Rotates a 64-bit value to the left by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c ROLQ instruction.
+///
+/// \param __X
+/// The unsigned 64-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS_CONSTEXPR
__rolq(unsigned long long __X, int __C) {
return __builtin_rotateleft64(__X, (unsigned long long)__C);
}
+/// Rotates a 64-bit value to the right by the specified number of bits.
+/// This operation is undefined if the number of bits exceeds the size of
+/// the value.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c RORQ instruction.
+///
+/// \param __X
+/// The unsigned 64-bit value to be rotated.
+/// \param __C
+/// The number of bits to rotate the value.
+/// \returns The rotated value.
static __inline__ unsigned long long __DEFAULT_FN_ATTRS_CONSTEXPR
__rorq(unsigned long long __X, int __C) {
return __builtin_rotateright64(__X, (unsigned long long)__C);
diff --git a/clang/lib/Headers/immintrin.h b/clang/lib/Headers/immintrin.h
index 0149a1cdea633b..27800f7a8202c1 100644
--- a/clang/lib/Headers/immintrin.h
+++ b/clang/lib/Headers/immintrin.h
@@ -490,6 +490,15 @@ _writegsbase_u64(unsigned long long __V)
* field inside of it.
*/
+/// Load a 16-bit value from memory and swap its bytes.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the 16-bit value to load.
+/// \returns The byte-swapped value.
static __inline__ short __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_loadbe_i16(void const * __P) {
struct __loadu_i16 {
@@ -498,6 +507,16 @@ _loadbe_i16(void const * __P) {
return (short)__builtin_bswap16(((const struct __loadu_i16*)__P)->__v);
}
+/// Swap the bytes of a 16-bit value and store it to memory.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the memory for storing the swapped value.
+/// \param __D
+/// The 16-bit value to be byte-swapped.
static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_storebe_i16(void * __P, short __D) {
struct __storeu_i16 {
@@ -506,6 +525,15 @@ _storebe_i16(void * __P, short __D) {
((struct __storeu_i16*)__P)->__v = __builtin_bswap16((unsigned short)__D);
}
+/// Load a 32-bit value from memory and swap its bytes.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the 32-bit value to load.
+/// \returns The byte-swapped value.
static __inline__ int __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_loadbe_i32(void const * __P) {
struct __loadu_i32 {
@@ -514,6 +542,16 @@ _loadbe_i32(void const * __P) {
return (int)__builtin_bswap32(((const struct __loadu_i32*)__P)->__v);
}
+/// Swap the bytes of a 32-bit value and store it to memory.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the memory for storing the swapped value.
+/// \param __D
+/// The 32-bit value to be byte-swapped.
static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_storebe_i32(void * __P, int __D) {
struct __storeu_i32 {
@@ -523,6 +561,15 @@ _storebe_i32(void * __P, int __D) {
}
#ifdef __x86_64__
+/// Load a 64-bit value from memory and swap its bytes.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the 64-bit value to load.
+/// \returns The byte-swapped value.
static __inline__ long long __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_loadbe_i64(void const * __P) {
struct __loadu_i64 {
@@ -531,6 +578,16 @@ _loadbe_i64(void const * __P) {
return (long long)__builtin_bswap64(((const struct __loadu_i64*)__P)->__v);
}
+/// Swap the bytes of a 64-bit value and store it to memory.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the MOVBE instruction.
+///
+/// \param __P
+/// A pointer to the memory for storing the swapped value.
+/// \param __D
+/// The 64-bit value to be byte-swapped.
static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("movbe")))
_storebe_i64(void * __P, long long __D) {
struct __storeu_i64 {
|
clang/lib/Headers/ia32intrin.h
Outdated
/// | ||
/// \headerfile <x86intrin.h> | ||
/// | ||
/// This intrinsic corresponds to the \c ROLB instruction. |
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
In the Intel and AMD manuals I think the instruction is just called ROL. ROLB is the name in AT&T assembler syntax to distinquish the size.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Done
clang/lib/Headers/ia32intrin.h
Outdated
/// | ||
/// \headerfile <x86intrin.h> | ||
/// | ||
/// This intrinsic corresponds to the \c PUSHFQ + \c POPQ instruction sequence. |
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Also POP
instead POPQ
. The same below.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Done
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
LGTM
/// | ||
/// \headerfile <x86intrin.h> | ||
/// | ||
/// This intrinsic corresponds to the \c PUSHFQ + \c POP instruction sequence. |
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
PUSHFQ->PUSHF
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
The mnemonic in SDM is PUSHFQ
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
I wrote that comment before I checked and meant to remove it before I approved. Sorry.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
LGTM.
…lvm#77686) ia32intrin.h gets descriptions for all remaining non-privileged intrinsic functions; the macros providing alternate names are not described. immintrin.h ditto, except for the InterlockedExchange functions.
ia32intrin.h gets descriptions for all remaining non-privileged intrinsic functions; the macros providing alternate names are not described. immintrin.h ditto, except for the InterlockedExchange functions.