Author: leo
Date: Thu Feb 2 08:09:44 2006
New Revision: 11404
Modified:
trunk/compilers/imcc/reg_alloc.c
Log:
Register allocator - remove dead code
* allocate_wanted_regs isn't used anymore
Modified: trunk/compilers/imcc/reg_alloc.c
==============================================================================
--- trunk/compilers/imcc/reg_alloc.c (original)
+++ trunk/compilers/imcc/reg_alloc.c Thu Feb 2 08:09:44 2006
@@ -23,7 +23,6 @@ void graph_coloring_reg_alloc(Interp *in
static void make_stat(IMC_Unit *, int *sets, int *cols);
static void imc_stat_init(IMC_Unit *);
static void print_stat(Parrot_Interp, IMC_Unit *);
-static void allocate_wanted_regs(IMC_Unit *);
static void build_reglist(Parrot_Interp, IMC_Unit * unit);
static void rebuild_reglist(Parrot_Interp, IMC_Unit * unit);
static void build_interference_graph(Parrot_Interp, IMC_Unit *);
@@ -184,8 +183,6 @@ graph_coloring_reg_alloc(Interp *interpr
{
build_interference_graph(interpreter, unit);
- if (IMCC_INFO(interpreter)->optimizer_level & OPT_SUB)
- allocate_wanted_regs(unit);
try_allocate(interpreter, unit);
IMCC_INFO(interpreter)->allocated = 1;
@@ -593,36 +590,6 @@ interferes(Interp *interpreter, IMC_Unit
}
/*
- * try to allocate as much as possible
- */
-static void
-allocate_wanted_regs(IMC_Unit * unit)
-{
- int i, y, interf, n_symbols;
- SymReg *r;
-
- n_symbols = unit->n_symbols;
- for (i = 0; i < n_symbols; i++) {
- r = unit->reglist[i];
- if (r->color >= 0 || r->want_regno == -1 || strchr("ISPN", r->set ==
0))
- continue;
- interf = 0;
- for (y = 0; y < n_symbols; y++) {
- SymReg *s;
- if (! ig_test(i, y, n_symbols, unit->interference_graph))
- continue;
- s = unit->reglist[y];
- if ( s
- && s->color == r->want_regno
- && s->set == r->set) {
- interf = 1;
- }
- }
- if (!interf)
- r->color = r->want_regno;
- }
-}
-/*
* find available color for register #x in available colors
*/
static int
