class Crystal::Macros::Asm

• Crystal::Macros::Asm
• Crystal::Macros::ASTNode

Overview

An inline assembly expression.

Every assembly node is equivalent to:

asm(
  {{ node.text }} :
  {{ node.outputs.splat }} :
  {{ node.inputs.splat }} :
  {{ node.clobbers.splat }} :
  {% if node.volatile? %} "volatile", {% end %}
  {% if node.alignstack? %} "alignstack", {% end %}
  {% if node.intel? %} "intel", {% end %}
  {% if node.can_throw? %} "unwind", {% end %}
)

Defined in:

compiler/crystal/macros.cr

Instance Method Summary

• #alignstack? : BoolLiteral

  Returns whether the assembly expression requires stack alignment code.

• #can_throw? : BoolLiteral

  Returns whether the assembly expression might unwind the stack.

• #clobbers : ArrayLiteral(StringLiteral)

  Returns an array of clobbered register names for this assembly expression.

• #inputs : ArrayLiteral(AsmOperand)

  Returns an array of input operands for this assembly expression.

• #intel? : BoolLiteral

  Returns true if the template string uses the Intel syntax, false if it uses the AT&T syntax.

• #outputs : ArrayLiteral(AsmOperand)

  Returns an array of output operands for this assembly expression.

• #text : StringLiteral

  Returns the template string for this assembly expression.

• #volatile? : BoolLiteral

  Returns whether the assembly expression contains side effects that are not listed in #outputs, #inputs, and #clobbers.

Instance Method Detail