xxsplti32dx

VSX Vector Splat Immediate 32-bit Double Index

xxsplti32dx XT, IX, IMM

Splats a 32-bit immediate into a doubleword index.

Encoding

Binary Layout

60

0:5

XT

6:10

IX

11:20

IMM

21:63

 

Format 8RR:D-form

Opcode 0x0500000080000000

Extension VSX

Operands

• XT
  Target
• IX
  Index
• IMM
  Value

Example

xxsplti32dx vs1, 0, 1

Related

More in VSX

Reference

View in PowerISA v3.1C Specification ↗ OPF Power ISA v3.1C

Description

Splats a sign-extended 32-bit immediate value into the doubleword at index IX within VSR XT. IX selects either the upper (0) or lower (1) doubleword; the 32-bit immediate is sign-extended to 64 bits and replicated. This is a VSX instruction that does not update condition flags.

Operation

imm64 ← SignExtend(IMM, 32)
if IX = 0 then
  XT[0:63] ← imm64
else
  XT[64:127] ← imm64

Programming Note

Use xxsplti32dx to initialize a VSX vector with a repeated 32-bit immediate value. Ensure the immediate value fits within 32 bits; otherwise, it will be truncated. This instruction is available in all privilege levels and does not raise exceptions for valid inputs.