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Source code

VCVTPD2UDQ

Convert Packed Double Precision Floating-Point Values to Packed Unsigned

stableVMJITAOTinstruction

Encodings

OpcodeInstructionOp/En64-bitCompat/LegacyDescription
EVEX.128.0F.W1 79 /rVCVTPD2UDQ xmm1 {k1}{z}, xmm2/m128/m64bcstAValidValidConvert two packed double precision floating-point AVX512F) OR values in xmm2/m128/m64bcst to two unsigned AVX10.1 doubleword integers in xmm1 subject to writemask k1.
EVEX.256.0F.W1 79 /rVCVTPD2UDQ xmm1 {k1}{z}, ymm2/m256/m64bcstAValidValidConvert four packed double precision floating-point AVX512F) OR values in ymm2/m256/m64bcst to four unsigned AVX10.1 doubleword integers in xmm1 subject to writemask k1.
EVEX.512.0F.W1 79 /rVCVTPD2UDQ ymm1 {k1}{z}, zmm2/m512/m64bcst {er}AValidValidConvert eight packed double precision floating-point OR AVX10.1 values in zmm2/m512/m64bcst to eight unsigned doubleword integers in ymm1 subject to 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 (the second operand) to packed unsigned doubleword integers in the destination operand (the first operand).

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 integer value FFFFFFFFH is returned.

The source operand is a ZMM/YMM/XMM register, a 512/256/128-bit memory location, or a 512/256/128-bit vector broadcasted from a 64-bit memory location. The destination operand is a ZMM/YMM/XMM register conditionally updated with writemask k1. The upper bits (MAXVL-1:256) of the corresponding destination are zeroed.

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

Operation

VCVTPD2UDQ (EVEX Encoded Versions) When SRC2 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 * 32
    k := j * 64
    IF k1[j] OR *no writemask*
          THEN
                DEST[i+31:i] :=
                Convert_Double_Precision_Floating_Point_To_UInteger(SRC[k+63:k])


     ELSE

             IF *merging-masking*      ; merging-masking

                  THEN *DEST[i+31:i] remains unchanged*

                  ELSE                 ; zeroing-masking

                    DEST[i+31:i] := 0

             FI

FI;

ENDFOR

DEST[MAXVL-1:VL/2] := 0

VCVTPD2UDQ (EVEX Encoded Versions) When SRC Operand is a Memory Source
(KL, VL) = (2, 128), (4, 256), (8, 512)

FOR j := 0 TO KL-1

i := j * 32

k := j * 64

IF k1[j] OR *no writemask*

     THEN

             IF (EVEX.b = 1)

                  THEN

                    DEST[i+31:i] :=

             Convert_Double_Precision_Floating_Point_To_UInteger(SRC[63:0])

                  ELSE

                    DEST[i+31:i] :=

             Convert_Double_Precision_Floating_Point_To_UInteger(SRC[k+63:k])

             FI;

     ELSE

             IF *merging-masking*      ; merging-masking

                  THEN *DEST[i+31:i] remains unchanged*

                  ELSE                 ; zeroing-masking

                    DEST[i+31:i] := 0

             FI

FI;

ENDFOR

DEST[MAXVL-1:VL/2] := 0

Intel C/C++ compiler intrinsics

VCVTPD2UDQ __m256i _mm512_cvtpd_epu32( __m512d a);
VCVTPD2UDQ __m256i _mm512_mask_cvtpd_epu32( __m256i s, __mmask8 k, __m512d a);
VCVTPD2UDQ __m256i _mm512_maskz_cvtpd_epu32( __mmask8 k, __m512d a);
VCVTPD2UDQ __m256i _mm512_cvt_roundpd_epu32( __m512d a, int r);
VCVTPD2UDQ __m256i _mm512_mask_cvt_roundpd_epu32( __m256i s, __mmask8 k, __m512d a, int r);
VCVTPD2UDQ __m256i _mm512_maskz_cvt_roundpd_epu32( __mmask8 k, __m512d a, int r);
VCVTPD2UDQ __m128i _mm256_mask_cvtpd_epu32( __m128i s, __mmask8 k, __m256d a);
VCVTPD2UDQ __m128i _mm256_maskz_cvtpd_epu32( __mmask8 k, __m256d a);
VCVTPD2UDQ __m128i _mm_mask_cvtpd_epu32( __m128i s, __mmask8 k, __m128d a);
VCVTPD2UDQ __m128i _mm_maskz_cvtpd_epu32( __mmask8 k, __m128d a);

SIMD Floating-Point Exceptions

Invalid, Precision.

Other Exceptions

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

Additionally: If EVEX.vvvv != 1111B.

#UD

Sources