Vesta
English
Source code

VCVTPD2QQ

Convert Packed Double Precision Floating-Point Values to Packed Quadword

stableVMJITAOTinstruction

Encodings

OpcodeInstructionOp/En64-bitCompat/LegacyDescription
EVEX.128.66.0F.W1 7B /rVCVTPD2QQ xmm1 {k1}{z}, xmm2/m128/m64bcstAValidValidConvert two packed double precision floating-point values AVX512DQ) OR from xmm2/m128/m64bcst to two packed signed AVX10.1 quadword integers in xmm1 with writemask k1.
EVEX.256.66.0F.W1 7B /rVCVTPD2QQ ymm1 {k1}{z}, ymm2/m256/m64bcstAValidValidConvert four packed double precision floating-point AVX512DQ) OR values from ymm2/m256/m64bcst to four packed signed AVX10.1 quadword integers in ymm1 with writemask k1.
EVEX.512.66.0F.W1 7B /rVCVTPD2QQ zmm1 {k1}{z}, zmm2/m512/m64bcst {er}AValidValidConvert eight packed double precision floating-point OR AVX10.1 values from zmm2/m512/m64bcst to eight packed signed quadword integers in zmm1 with writemask k1.

Operand encoding

Each mode is a value of the Op/En column above. It says which field of the encoded instruction carries each operand, in the order they are written, and whether the instruction reads it, writes it or both.

A

  1. modrm.reg escrituraModRM byte, reg field (bits 5-3)
  2. modrm.rm lecturaModRM byte, r/m field (bits 2-0); with the SIB byte and the displacement when the mod field asks for them

Tupla: Full

Measured cost

Loading measurements from arch-data...

Description

Converts packed double precision floating-point values in the source operand (second operand) to packed quadword integers in the destination operand (first operand).

EVEX encoded versions: The source operand is a ZMM/YMM/XMM register or a 512/256/128-bit memory location. The destination operation is a ZMM/YMM/XMM register conditionally updated with writemask k1.

When a conversion is inexact, the value returned is rounded according to the rounding control bits in the MXCSR register or the embedded rounding control bits. If a converted result cannot be represented in the destination format, the floating-point invalid exception is raised, and if this exception is masked, the indefinite integer value 80000000_00000000H is returned.

EVEX.vvvv is reserved and must be 1111b otherwise instructions will #UD.

Operation

VCVTPD2QQ (EVEX Encoded Version) When SRC Operand is a Register
(KL, VL) = (2, 128), (4, 256), (8, 512)
IF (VL == 512) AND (EVEX.b == 1)

    THEN
          SET_ROUNDING_MODE_FOR_THIS_INSTRUCTION(EVEX.RC);

    ELSE
          SET_ROUNDING_MODE_FOR_THIS_INSTRUCTION(MXCSR.RC);

FI;

FOR j := 0 TO KL-1

i := j * 64

IF k1[j] OR *no writemask*

THEN DEST[i+63:i] :=

             Convert_Double_Precision_Floating_Point_To_QuadInteger(SRC[i+63:i])

ELSE

             IF *merging-masking*               ; merging-masking

                 THEN *DEST[i+63:i] remains unchanged*

                 ELSE                           ; zeroing-masking

                    DEST[i+63:i] := 0

             FI


    FI;
ENDFOR
DEST[MAXVL-1:VL] := 0

VCVTPD2QQ (EVEX Encoded Version) When SRC Operand is a Memory Source
(KL, VL) = (2, 128), (4, 256), (8, 512)

FOR j := 0 TO KL-1

i := j * 64

IF k1[j] OR *no writemask*

     THEN

             IF (EVEX.b == 1)

                  THEN

                    DEST[i+63:i] :=    Convert_Double_Precision_Floating_Point_To_QuadInteger(SRC[63:0])

                  ELSE

                    DEST[i+63:i] := Convert_Double_Precision_Floating_Point_To_QuadInteger(SRC[i+63:i])

             FI;

     ELSE

             IF *merging-masking*      ; merging-masking

                  THEN *DEST[i+63:i] remains unchanged*

                  ELSE                 ; zeroing-masking

                    DEST[i+63:i] := 0

             FI

FI;

ENDFOR

DEST[MAXVL-1:VL] := 0

Intel C/C++ compiler intrinsics

VCVTPD2QQ __m512i _mm512_cvtpd_epi64( __m512d a);
VCVTPD2QQ __m512i _mm512_mask_cvtpd_epi64( __m512i s, __mmask8 k, __m512d a);
VCVTPD2QQ __m512i _mm512_maskz_cvtpd_epi64( __mmask8 k, __m512d a);
VCVTPD2QQ __m512i _mm512_cvt_roundpd_epi64( __m512d a, int r);
VCVTPD2QQ __m512i _mm512_mask_cvt_roundpd_epi64( __m512i s, __mmask8 k, __m512d a, int r);
VCVTPD2QQ __m512i _mm512_maskz_cvt_roundpd_epi64( __mmask8 k, __m512d a, int r);
VCVTPD2QQ __m256i _mm256_mask_cvtpd_epi64( __m256i s, __mmask8 k, __m256d a);
VCVTPD2QQ __m256i _mm256_maskz_cvtpd_epi64( __mmask8 k, __m256d a);
VCVTPD2QQ __m128i _mm_mask_cvtpd_epi64( __m128i s, __mmask8 k, __m128d a);
VCVTPD2QQ __m128i _mm_maskz_cvtpd_epi64( __mmask8 k, __m128d a);
VCVTPD2QQ __m256i _mm256_cvtpd_epi64 (__m256d src) VCVTPD2QQ __m128i _mm_cvtpd_epi64 (__m128d src);

SIMD Floating-Point Exceptions

Invalid, Precision.

Other Exceptions

EVEX-encoded instructions, see Table 2-48, "Type E2 Class Exception Conditions."

Additionally:

#UD                     If EVEX.vvvv != 1111B.

Sources