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// clang-format off
/*
#include <stdlib.h>
#include <stdint.h>
#define MASK32LO 0x00000000FFFFFFFFLLU
#define MASK16LO 0x0000FFFF0000FFFFLLU
#define MASK8LO 0x00FF00FF00FF00FFLLU
#define MASK4LO 0x0F0F0F0F0F0F0F0FLLU
#define MASK2LO 0x3333333333333333LLU
#define MASK1LO 0x5555555555555555LLU
#define SWAP32(X,TYPE) (((X&((TYPE) MASK32LO))<<32) | (((X)>>32)&((TYPE) MASK32LO)))
#define SWAP16(X,TYPE) (((X&((TYPE) MASK16LO))<<16) | (((X)>>16)&((TYPE) MASK16LO)))
#define SWAP8(X,TYPE) (((X&((TYPE) MASK8LO ))<< 8) | (((X)>> 8)&((TYPE) MASK8LO)))
#define SWAP4(X,TYPE) (((X&((TYPE) MASK4LO ))<< 4) | (((X)>> 4)&((TYPE) MASK4LO)))
#define SWAP2(X,TYPE) (((X&((TYPE) MASK2LO ))<< 2) | (((X)>> 2)&((TYPE) MASK2LO)))
#define SWAP1(X,TYPE) (((X&((TYPE) MASK1LO ))<< 1) | (((X)>> 1)&((TYPE) MASK1LO)))
///////////////////////////////////////////////////////////////////////////////////////
// scalar
///////////////////////////////////////////////////////////////////////////////////////
uint8_t llvm_bitreverse_i8(uint8_t A) {
A=SWAP4(A,uint8_t);
A=SWAP2(A,uint8_t);
A=SWAP1(A,uint8_t);
return A;
}
uint16_t llvm_bitreverse_i16(uint16_t A) {
A=SWAP8(A,uint16_t);
A=SWAP4(A,uint16_t);
A=SWAP2(A,uint16_t);
A=SWAP1(A,uint16_t);
return A;
}
uint32_t llvm_bitreverse_i32(uint32_t A) {
A=SWAP16(A,uint32_t);
A=SWAP8(A,uint32_t);
A=SWAP4(A,uint32_t);
A=SWAP2(A,uint32_t);
A=SWAP1(A,uint32_t);
return A;
}
uint64_t llvm_bitreverse_i64(uint64_t A) {
A=SWAP32(A,uint64_t);
A=SWAP16(A,uint64_t);
A=SWAP8(A,uint64_t);
A=SWAP4(A,uint64_t);
A=SWAP2(A,uint64_t);
A=SWAP1(A,uint64_t);
return A;
}
///////////////////////////////////////////////////////////////////////////////////////
// vector
///////////////////////////////////////////////////////////////////////////////////////
#define GEN_VECTOR_BITREVERSE(LENGTH) \
typedef uint8_t uint8_t ## LENGTH __attribute__((ext_vector_type(LENGTH))); \
typedef uint16_t uint16_t ## LENGTH __attribute__((ext_vector_type(LENGTH))); \
typedef uint32_t uint32_t ## LENGTH __attribute__((ext_vector_type(LENGTH))); \
typedef uint64_t uint64_t ## LENGTH __attribute__((ext_vector_type(LENGTH))); \
\
uint8_t ## LENGTH llvm_bitreverse_v ## LENGTH ## i8 (uint8_t ## LENGTH A) { \
A=SWAP4(A,uint8_t); \
A=SWAP2(A,uint8_t); \
A=SWAP1(A,uint8_t); \
return A; \
} \
\
uint16_t ## LENGTH llvm_bitreverse_v ## LENGTH ## i16(uint16_t ## LENGTH A) { \
A=SWAP8(A,uint16_t); \
A=SWAP4(A,uint16_t); \
A=SWAP2(A,uint16_t); \
A=SWAP1(A,uint16_t); \
return A; \
} \
\
uint32_t ## LENGTH llvm_bitreverse_v ## LENGTH ## i32(uint32_t ## LENGTH A) { \
A=SWAP16(A,uint32_t); \
A=SWAP8(A,uint32_t); \
A=SWAP4(A,uint32_t); \
A=SWAP2(A,uint32_t); \
A=SWAP1(A,uint32_t); \
return A; \
} \
\
uint64_t ## LENGTH llvm_bitreverse_v ## LENGTH ## i64(uint64_t ## LENGTH A) { \
A=SWAP32(A,uint64_t); \
A=SWAP16(A,uint64_t); \
A=SWAP8(A,uint64_t); \
A=SWAP4(A,uint64_t); \
A=SWAP2(A,uint64_t); \
A=SWAP1(A,uint64_t); \
return A; \
}
GEN_VECTOR_BITREVERSE(2)
GEN_VECTOR_BITREVERSE(3)
GEN_VECTOR_BITREVERSE(4)
GEN_VECTOR_BITREVERSE(8)
GEN_VECTOR_BITREVERSE(16)
*/
// clang-format on
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