NAME 
compilers/imcc/instructions.c
DESCRIPTION
When generating the code, the instructions of the program are stored in an array.
After the register allocation is resolved, the instructions array is flushed.
These functions operate over this array and its contents.
Functions
Instruction *_mk_instruction- Creates a new instruction
void imcc_init_tables- RT#48260: Not yet documented!!!
int ins_reads2- Returns TRUE if instruction ins reads from a register of type t
int ins_writes2- Returns TRUE if instruction ins writes to a register of type t
int instruction_reads- next 2 functions are called very often, says gprof they should be fast
int instruction_writes- RT#48260: Not yet documented!!!
int get_branch_regno- Get the register number of an address which is a branch target
SymReg *get_branch_reg- Get the register corresponding to an address which is a branch target
Instruction *delete_ins- Delete instruction ins. Also free it if needs_freeing is true. The instruction following ins is returned.
void insert_ins- insert tmp after ins
void prepend_ins- insert tmp before ins
void subst_ins- Substitute tmp for ins. Free ins if needs_freeing is true.
Instruction *move_ins- Move instruction ins from its current position to the position following instruction to. Returns the instruction following the initial position of ins.
Instruction *emitb- Emit a single instruction into the current unit buffer.
void free_ins- Free the Instruction structure ins.
int ins_print- Print details of instruction ins in file fd.
static int e_file_open- RT#48260: Not yet documented!!!
static int e_file_close- RT#48260: Not yet documented!!!
static int e_file_emit- RT#48260: Not yet documented!!!
int emit_open- RT#48260: Not yet documented!!!
int emit_flush- RT#48260: Not yet documented!!!
int emit_close- RT#48260: Not yet documented!!!
