| Opcode/Instruction | Op /En | 64/32 bit Mode Support | CPUID Feature Flag | Description |
|---|---|---|---|---|
| F2 0F 2D /r CVTSD2SI r32, xmm1/m64 | RM | V/V | SSE2 | Convert one double-precision floating-point value from xmm1/m64 to one signed doubleword integer r32. |
| F2 REX.W 0F 2D /r CVTSD2SI r64, xmm1/m64 | RM | V/N.E. | SSE2 | Convert one double-precision floating-point value from xmm1/m64 to one signed quadword integer sign-extended into r64. |
| VEX.128.F2.0F.W0 2D /r VCVTSD2SI r32, xmm1/m64 | RM | V/V | AVX | Convert one double-precision floating-point value from xmm1/m64 to one signed doubleword integer r32. |
| VEX.128.F2.0F.W1 2D /r VCVTSD2SI r64, xmm1/m64 | RM | V/N.E.1 | AVX | Convert one double-precision floating-point value from xmm1/m64 to one signed quadword integer sign-extended into r64. |
| EVEX.LIG.F2.0F.W0 2D /r VCVTSD2SI r32, xmm1/m64{er} | T1F | V/V | AVX512F | Convert one double-precision floating-point value from xmm1/m64 to one signed doubleword integer r32. |
| EVEX.LIG.F2.0F.W1 2D /r VCVTSD2SI r64, xmm1/m64{er} | T1F | V/N.E.1 | AVX512F | Convert one double-precision floating-point value from xmm1/m64 to one signed quadword integer sign-extended into r64. |
NOTES: 1. VEX.W1/EVEX.W1 in non-64 bit is ignored; the instructions behaves as if the W0 version is used.
| Op/En | Operand 1 | Operand 2 | Operand 3 | Operand 4 |
| RM | ModRM:reg (w) | ModRM:r/m (r) | NA | NA |
| T1F | ModRM:reg (w) | ModRM:r/m (r) | NA | NA |
Converts a double-precision floating-point value in the source operand (the second operand) to a signed double-word integer in the destination operand (first operand). The source operand can be an XMM register or a 64-bit memory location. The destination operand is a general-purpose register. When the source operand is an XMM register, the double-precision floating-point value is contained in the low quadword of the register.
When a conversion is inexact, the value returned is rounded according to the rounding control bits in the MXCSR register.
If a converted result exceeds the range limits of signed doubleword integer (in non-64-bit modes or 64-bit mode with REX.W/VEX.W/EVEX.W=0), the floating-point invalid exception is raised, and if this exception is masked, the indefinite integer value (80000000H) is returned.
If a converted result exceeds the range limits of signed quadword integer (in 64-bit mode and REX.W/VEX.W/EVEX.W = 1), the floating-point invalid exception is raised, and if this exception is masked, the indefinite integer value (80000000_00000000H) is returned.
Legacy SSE instruction: Use of the REX.W prefix promotes the instruction to produce 64-bit data in 64-bit mode. See the summary chart at the beginning of this section for encoding data and limits.
Note: VEX.vvvv and EVEX.vvvv are reserved and must be 1111b, otherwise instructions will #UD.
Software should ensure VCVTSD2SI is encoded with VEX.L=0. Encoding VCVTSD2SI with VEX.L=1 may encounter unpredictable behavior across different processor generations.
VCVTSD2SI (EVEX encoded version)
IF SRC *is register* AND (EVEX.b = 1)
THEN
SET_RM(EVEX.RC);
ELSE
SET_RM(MXCSR.RM);
FI;
IF 64-Bit Mode and OperandSize = 64
THEN
DEST[63:0] (cid:197) Convert_Double_Precision_Floating_Point_To_Integer(SRC[63:0]);
ELSE
DEST[31:0] (cid:197) Convert_Double_Precision_Floating_Point_To_Integer(SRC[63:0]);
FI
(V)CVTSD2SI
IF 64-Bit Mode and OperandSize = 64
THEN
DEST[63:0] (cid:197)Convert_Double_Precision_Floating_Point_To_Integer(SRC[63:0]);
ELSE
DEST[31:0] (cid:197)Convert_Double_Precision_Floating_Point_To_Integer(SRC[63:0]);
FI;
VCVTSD2SI int _mm_cvtsd_i32(__m128d); VCVTSD2SI int _mm_cvt_roundsd_i32(__m128d, int r); VCVTSD2SI __int64 _mm_cvtsd_i64(__m128d); VCVTSD2SI __int64 _mm_cvt_roundsd_i64(__m128d, int r); CVTSD2SI __int64 _mm_cvtsd_si64(__m128d); CVTSD2SI int _mm_cvtsd_si32(__m128d a)
Invalid, Precision
| VEX-encoded instructions, see Exceptions Type 3; |
| EVEX-encoded instructions, see Exceptions Type E3NF. |
| If VEX.vvvv != 1111B or EVEX.vvvv != 1111B. |