GNU Compiler Collection (GCC) Internals: GIMPLE_ASM

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#### 12.8.1 `GIMPLE_ASM`

GIMPLE function: gasm *gimple_build_asm_vec ( const char *string, vec<tree, va_gc> *inputs, vec<tree, va_gc> *outputs, vec<tree, va_gc> *clobbers, vec<tree, va_gc> *labels)

  Build a `GIMPLE_ASM` statement. This statement is used for building in-line assembly constructs. `STRING` is the assembly code. `INPUTS`, `OUTPUTS`, `CLOBBERS` and `LABELS` are the inputs, outputs, clobbered registers and labels.

GIMPLE function: unsigned gimple_asm_ninputs (const gasm *g)

  Return the number of input operands for `GIMPLE_ASM` `G`.

GIMPLE function: unsigned gimple_asm_noutputs (const gasm *g)

  Return the number of output operands for `GIMPLE_ASM` `G`.

GIMPLE function: unsigned gimple_asm_nclobbers (const gasm *g)

  Return the number of clobber operands for `GIMPLE_ASM` `G`.

GIMPLE function: tree gimple_asm_input_op (const gasm *g, unsigned index)

  Return input operand `INDEX` of `GIMPLE_ASM` `G`.

GIMPLE function: void gimple_asm_set_input_op (gasm *g, unsigned index, tree in_op)

  Set `IN_OP` to be input operand `INDEX` in `GIMPLE_ASM` `G`.

GIMPLE function: tree gimple_asm_output_op (const gasm *g, unsigned index)

  Return output operand `INDEX` of `GIMPLE_ASM` `G`.

GIMPLE function: void gimple_asm_set_output_op (gasm *g, unsigned index, tree out_op)

  Set `OUT_OP` to be output operand `INDEX` in `GIMPLE_ASM` `G`.

GIMPLE function: tree gimple_asm_clobber_op (const gasm *g, unsigned index)

  Return clobber operand `INDEX` of `GIMPLE_ASM` `G`.

GIMPLE function: void gimple_asm_set_clobber_op (gasm *g, unsigned index, tree clobber_op)

  Set `CLOBBER_OP` to be clobber operand `INDEX` in `GIMPLE_ASM` `G`.

GIMPLE function: const char * gimple_asm_string (const gasm *g)

  Return the string representing the assembly instruction in `GIMPLE_ASM` `G`.

GIMPLE function: bool gimple_asm_volatile_p (const gasm *g)

  Return true if `G` is an asm statement marked volatile.

GIMPLE function: void gimple_asm_set_volatile (gasm *g, bool volatile_p)

  Mark asm statement `G` as volatile or non-volatile based on `VOLATILE_P`.

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