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[X86] Support intrinsics _bextr2* 

Reviewers: LuoYuanke, craig.topper, RKSimon, pengfei

Reviewed By: craig.topper

Subscribers: cfe-commits, llvm-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75894
This commit is contained in:
Shengchen Kan 2020-03-06 15:53:47 +08:00
parent 270b528c7c
commit 560aa53f8f
2 changed files with 57 additions and 0 deletions
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44
clang/lib/Headers/bmiintrin.h
View File

@ -192,6 +192,28 @@ _bextr_u32(unsigned int __X, unsigned int __Y, unsigned int __Z)
return __builtin_ia32_bextr_u32 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8)));
}
/* Intel-specified, single-leading-underscore version of BEXTR2 */
/// Extracts the specified bits from the first operand and returns them
/// in the least significant bits of the result.
///
/// \headerfile <x86intrin.h>
///
/// This intrinsic corresponds to the <c> BEXTR </c> instruction.
///
/// \param __X
/// An unsigned integer whose bits are to be extracted.
/// \param __Y
/// An unsigned integer used to specify which bits are extracted. Bits [7:0]
/// specify the index of the least significant bit. Bits [15:8] specify the
/// number of bits to be extracted.
/// \returns An unsigned integer whose least significant bits contain the
/// extracted bits.
/// \see __bextr_u32
static __inline__ unsigned int __DEFAULT_FN_ATTRS
_bextr2_u32(unsigned int __X, unsigned int __Y) {
return __builtin_ia32_bextr_u32(__X, __Y);
}
/// Clears all bits in the source except for the least significant bit
/// containing a value of 1 and returns the result.
///
@ -321,6 +343,28 @@ _bextr_u64(unsigned long long __X, unsigned int __Y, unsigned int __Z)
return __builtin_ia32_bextr_u64 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8)));
}
/* Intel-specified, single-leading-underscore version of BEXTR2 */
/// Extracts the specified bits from the first operand and returns them
/// in the least significant bits of the result.
///
/// \headerfile <x86intrin.h>
///
/// This intrinsic corresponds to the <c> BEXTR </c> instruction.
///
/// \param __X
/// An unsigned 64-bit integer whose bits are to be extracted.
/// \param __Y
/// An unsigned 64-bit integer used to specify which bits are extracted. Bits
/// [7:0] specify the index of the least significant bit. Bits [15:8] specify
/// the number of bits to be extracted.
/// \returns An unsigned 64-bit integer whose least significant bits contain the
/// extracted bits.
/// \see __bextr_u64
static __inline__ unsigned long long __DEFAULT_FN_ATTRS
_bextr2_u64(unsigned long long __X, unsigned long long __Y) {
return __builtin_ia32_bextr_u64(__X, __Y);
}
/// Clears all bits in the source except for the least significant bit
/// containing a value of 1 and returns the result.
///

13
clang/test/CodeGen/bmi-builtins.c
View File

@ -155,6 +155,12 @@ unsigned int test_bextr_u32(unsigned int __X, unsigned int __Y,
return _bextr_u32(__X, __Y, __Z);
}
unsigned int test_bextr2_u32(unsigned int __X, unsigned int __Y) {
// CHECK-LABEL: test_bextr2_u32
// CHECK: i32 @llvm.x86.bmi.bextr.32(i32 %{{.*}}, i32 %{{.*}})
return _bextr2_u32(__X, __Y);
}
unsigned int test_blsi_u32(unsigned int __X) {
// CHECK-LABEL: test_blsi_u32
// CHECK: sub i32 0, %{{.*}}
@ -196,6 +202,13 @@ unsigned long long test_bextr_u64(unsigned long __X, unsigned int __Y,
return _bextr_u64(__X, __Y, __Z);
}
unsigned long long test_bextr2_u64(unsigned long long __X,
unsigned long long __Y) {
// CHECK-LABEL: test_bextr2_u64
// CHECK: i64 @llvm.x86.bmi.bextr.64(i64 %{{.*}}, i64 %{{.*}})
return _bextr2_u64(__X, __Y);
}
unsigned long long test_blsi_u64(unsigned long long __X) {
// CHECK-LABEL: test_blsi_u64
// CHECK: sub i64 0, %{{.*}}