diff options
Diffstat (limited to 'gcc/target.h')
| -rw-r--r-- | gcc/target.h | 54 |
1 files changed, 44 insertions, 10 deletions
diff --git a/gcc/target.h b/gcc/target.h index bc839c5..8d73f49 100644 --- a/gcc/target.h +++ b/gcc/target.h @@ -44,9 +44,6 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. to gradually reduce the amount of conditional compilation that is scattered throughout GCC. */ -/* Forward declaration for the benefit of prototypes. */ -struct rtx_def; - struct gcc_target { /* Functions that output assembler for the target. */ @@ -72,12 +69,52 @@ struct gcc_target void (* named_section) PARAMS ((const char *, unsigned int)); /* Output a constructor for a symbol with a given priority. */ - void (* constructor) PARAMS ((struct rtx_def *, int)); + void (* constructor) PARAMS ((rtx, int)); /* Output a destructor for a symbol with a given priority. */ - void (* destructor) PARAMS ((struct rtx_def *, int)); + void (* destructor) PARAMS ((rtx, int)); } asm_out; + /* Functions relating to instruction scheduling. */ + struct sched + { + /* Given the current cost, COST, of an insn, INSN, calculate and + return a new cost based on its relationship to DEP_INSN through + the dependence LINK. The default is to make no adjustment. */ + int (* adjust_cost) PARAMS ((rtx insn, rtx link, rtx def_insn, int cost)); + + /* Adjust the priority of an insn as you see fit. Returns the new + priority. */ + int (* adjust_priority) PARAMS ((rtx, int)); + + /* Function which returns the maximum number of insns that can be + scheduled in the same machine cycle. This must be constant + over an entire compilation. The default is 1. */ + int (* issue_rate) PARAMS ((void)); + + /* Calculate how much this insn affects how many more insns we + can emit this cycle. Default is they all cost the same. */ + int (* variable_issue) PARAMS ((FILE *, int, rtx, int)); + + /* Initialize machine-dependent scheduling code. */ + void (* md_init) PARAMS ((FILE *, int, int)); + + /* Finalize machine-dependent scheduling code. */ + void (* md_finish) PARAMS ((FILE *, int)); + + /* Reorder insns in a machine-dependent fashion, in two different + places. Default does nothing. */ + int (* reorder) PARAMS ((FILE *, int, rtx *, int *, int)); + int (* reorder2) PARAMS ((FILE *, int, rtx *, int *, int)); + + /* cycle_display is a pointer to a function which can emit + data into the assembly stream about the current cycle. + Arguments are CLOCK, the data to emit, and LAST, the last + insn in the new chain we're building. Returns a new LAST. + The default is to do nothing. */ + rtx (* cycle_display) PARAMS ((int clock, rtx last)); + } sched; + /* Given two decls, merge their attributes and return the result. */ tree (* merge_decl_attributes) PARAMS ((tree, tree)); @@ -111,11 +148,8 @@ struct gcc_target void (* init_builtins) PARAMS ((void)); /* Expand a target-specific builtin. */ - struct rtx_def * (* expand_builtin) PARAMS ((tree exp, - struct rtx_def *target, - struct rtx_def *subtarget, - enum machine_mode mode, - int ignore)); + rtx (* expand_builtin) PARAMS ((tree exp, rtx target, rtx subtarget, + enum machine_mode mode, int ignore)); /* Given a decl, a section name, and whether the decl initializer has relocs, choose attributes for the section. */ |