stacksave GPU Virtual ISA NVIDIA

stacksave Stack Manipulation Instructions

stacksave.type d;

Copies the current value of stack pointer into the destination register d.

Encoding

PTX is a virtual instruction set. It has no single, stable native binary encoding - the compiler lowers this instruction to different native machine code depending on the selected NVIDIA target architecture (compute capability). This page intentionally shows no bit-diagram; see the target/version requirements below for what governs how this instruction compiles.
PTX ISA Version Introduced PTX ISA 7.3
Minimum Target sm_52

Syntax Forms

One mnemonic covers many type / state-space / scope / modifier combinations - each row below is an independently valid form.

Syntax Data Types State Space(s) Modifiers Min. Target Description
stacksave.type d; sm_52 Copies the current value of stack pointer into the destination register d. Pointer returned by stacksave can be used in a subsequent stackrestore instruction to restore the stack pointer. (see the official PTX ISA docs for the full description)

Operands

  • d
    Destination register

At a Glance

Data Types -

Related

More in Stack Manipulation Instructions

Reference

NVIDIA PTX ISA

Description

Copies the current value of stack pointer into the destination register d. Pointer returned by stacksave can be used in a subsequent stackrestore instruction to restore the stack pointer. If d is modified prior to use in stackrestore instruction, it may corrupt data in the stack. Destination operand d has the same type as the instruction type.

Semantics

d = stackptr;

Examples

.reg .u32 rd;
stacksave.u32 rd;

.reg .u64 rd1;
stacksave.u64 rd1;

Reproduced from NVIDIA's official PTX ISA documentation for technical accuracy.

Sources