Streaming SIMD Extensions Intrinsics Implementation

Regular Streaming SIMD Extensions (SSE) intrinsics work on 4 32-bit single precision values. On Itanium®-based systems, basic operations like add and compare require two SIMD instructions. All can be executed in the same cycle so the throughput is one basic SSE operation per cycle or 4 32-bit single precision operations per cycle.

Key to the table entries

A = Expected to give significant performance gain over non-intrinsic-based code equivalent.
B = Non-intrinsic-based source code would be better; the intrinsic's implementation may map directly to native instructions but they offer no significant performance gain.
C = Requires contorted implementation for particular microarchitecture. Will result in very poor performance if used.

Intrinsic Name	MMX(TM Technology	Streaming SIMD Extensions Streaming SIMD Extensions 2	Itanium® Architecture
_mm_add_ss	N/A	B	B
_mm_add_ps	N/A	A	A
_mm_sub_ss	N/A	B	B
_mm_sub_ps	N/A	A	A
_mm_mul_ss	N/A	B	B
_mm_mul_ps	N/A	A	A
_mm_div_ss	N/A	B	B
_mm_div_ps	N/A	A	A
_mm_sqrt_ss	N/A	B	B
_mm_sqrt_ps	N/A	A	A
_mm_rcp_ss	N/A	B	B
_mm_rcp_ps	N/A	A	A
_mm_rsqrt_ss	N/A	B	B
_mm_rsqrt_ps	N/A	A	A
_mm_min_ss	N/A	B	B
_mm_min_ps	N/A	A	A
_mm_max_ss	N/A	B	B
_mm_max_ps	N/A	A	A
_mm_and_ps	N/A	A	A
_mm_andnot_ps	N/A	A	A
_mm_or_ps	N/A	A	A
_mm_xor_ps	N/A	A	A
_mm_cmpeq_ss	N/A	B	B
_mm_cmpeq_ps	N/A	A	A
_mm_cmplt_ss	N/A	B	B
_mm_cmplt_ps	N/A	A	A
_mm_cmple_ss	N/A	B	B
_mm_cmple_ps	N/A	A	A
_mm_cmpgt_ss	N/A	B	B
_mm_cmpgt_ps	N/A	A	A
_mm_cmpge_ss	N/A	B	B
_mm_cmpge_ps	N/A	A	A
_mm_cmpneq_ss	N/A	B	B
_mm_cmpneq_ps	N/A	A	A
_mm_cmpnlt_ss	N/A	B	B
_mm_cmpnlt_ps	N/A	A	A
_mm_cmpnle_ss	N/A	B	B
_mm_cmpnle_ps	N/A	A	A
_mm_cmpngt_ss	N/A	B	B
_mm_cmpngt_ps	N/A	A	A
_mm_cmpnge_ss	N/A	B	B
_mm_cmpnge_ps	N/A	A	A
_mm_cmpord_ss	N/A	B	B
_mm_cmpord_ps	N/A	A	A
_mm_cmpunord_ss	N/A	B	B
_mm_cmpunord_ps	N/A	A	A
_mm_comieq_ss	N/A	B	B
_mm_comilt_ss	N/A	B	B
_mm_comile_ss	N/A	B	B
_mm_comigt_ss	N/A	B	B
_mm_comige_ss	N/A	B	B
_mm_comineq_ss	N/A	B	B
_mm_ucomieq_ss	N/A	B	B
_mm_ucomilt_ss	N/A	B	B
_mm_ucomile_ss	N/A	B	B
_mm_ucomigt_ss	N/A	B	B
_mm_ucomige_ss	N/A	B	B
_mm_ucomineq_ss	N/A	B	B
_mm_cvtss_si32	N/A	A	B
_mm_cvtps_pi32	N/A	A	A
_mm_cvttss_si32	N/A	A	B
_mm_cvttps_pi32	N/A	A	A
_mm_cvtsi32_ss	N/A	A	B
_mm_cvtpi32_ps	N/A	A	C
_mm_cvtpi16_ps	N/A	A	C
_mm_cvtpu16_ps	N/A	A	C
_mm_cvtpi8_ps	N/A	A	C
_mm_cvtpu8_ps	N/A	A	C
_mm_cvtpi32x2_ps	N/A	A	C
_mm_cvtps_pi16	N/A	A	C
_mm_cvtps_pi8	N/A	A	C
_mm_move_ss	N/A	A	A
_mm_shuffle_ps	N/A	A	A
_mm_unpackhi_ps	N/A	A	A
_mm_unpacklo_ps	N/A	A	A
_mm_movehl_ps	N/A	A	A
_mm_movelh_ps	N/A	A	A
_mm_movemask_ps	N/A	A	C
_mm_getcsr	N/A	A	A
_mm_setcsr	N/A	A	A
_mm_loadh_pi	N/A	A	A
_mm_loadl_pi	N/A	A	A
_mm_load_ss	N/A	A	B
_mm_load1_ps	N/A	A	A
_mm_load_ps	N/A	A	A
_mm_loadu_ps	N/A	A	A
_mm_loadr_ps	N/A	A	A
_mm_storeh_pi	N/A	A	A
_mm_storel_pi	N/A	A	A
_mm_store_ss	N/A	A	A
_mm_store_ps	N/A	A	A
_mm_store1_ps	N/A	A	A
_mm_storeu_ps	N/A	A	A
_mm_storer_ps	N/A	A	A
_mm_set_ss	N/A	A	A
_mm_set1_ps	N/A	A	A
_mm_set_ps	N/A	A	A
_mm_setr_ps	N/A	A	A
_mm_setzero_ps	N/A	A	A
_mm_prefetch	N/A	A	A
_mm_stream_pi	N/A	A	A
_mm_stream_ps	N/A	A	A
_mm_sfence	N/A	A	A
_mm_extract_pi16	N/A	A	A
_mm_insert_pi16	N/A	A	A
_mm_max_pi16	N/A	A	A
_mm_max_pu8	N/A	A	A
_mm_min_pi16	N/A	A	A
_mm_min_pu8	N/A	A	A
_mm_movemask_pi8	N/A	A	C
_mm_mulhi_pu16	N/A	A	A
_mm_shuffle_pi16	N/A	A	A
_mm_maskmove_si64	N/A	A	C
_mm_avg_pu8	N/A	A	A
_mm_avg_pu16	N/A	A	A
_mm_sad_pu8	N/A	A	A