Info Catalog as: Xtensa Optimizations as: Xtensa-Dependent as: Xtensa Directives

as: Xtensa Relaxation

 
 9.54.4 Xtensa Relaxation
 ------------------------
 
 When an instruction operand is outside the range allowed for that
 particular instruction field, 'as' can transform the code to use a
 functionally-equivalent instruction or sequence of instructions.  This
 process is known as "relaxation".  This is typically done for branch
 instructions because the distance of the branch targets is not known
 until assembly-time.  The Xtensa assembler offers branch relaxation and
 also extends this concept to function calls, 'MOVI' instructions and
 other instructions with immediate fields.
 

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· Xtensa Branch Relaxation        Relaxation of Branches.
· Xtensa Call Relaxation          Relaxation of Function Calls.
· Xtensa Jump Relaxation          Relaxation of Jumps.
· Xtensa Immediate Relaxation     Relaxation of other Immediate Fields.
 

Info Catalog as: Xtensa Optimizations as: Xtensa-Dependent as: Xtensa Directives