be: Replace be_put_allocatable_regs() by be_get_allocatable_regs().

ir/be/be_t.h

@@ -11,9 +11,10 @@
 #ifndef FIRM_BE_BE_T_H
 #define FIRM_BE_BE_T_H
 
+#include <assert.h>
+
 #include "be.h"
 #include "be_types.h"
-#include "bitset.h"
 #include "firm_types.h"
 #include "pmap.h"
 #include "timing.h"
@@ -70,9 +71,6 @@ extern asm_constraint_flags_t asm_constraint_flags[256];
 
 void be_init_default_asm_constraint_flags(void);
 
-void be_put_allocatable_regs(const ir_graph *irg,
-                             const arch_register_class_t *cls, bitset_t *bs);
-
 void be_get_allocatable_regs(ir_graph const *irg, arch_register_class_t const *cls, unsigned *raw_bitset);
 
 unsigned be_get_n_allocatable_regs(const ir_graph *irg,

ir/be/beabi.c

@@ -1803,28 +1803,12 @@ void be_abi_introduce(ir_graph *irg)
 	pmap_destroy(env.regs);
 }
 
-void be_put_allocatable_regs(const ir_graph *irg,
-                             const arch_register_class_t *cls, bitset_t *bs)
-{
-	be_irg_t *birg             = be_birg_from_irg(irg);
-	unsigned *allocatable_regs = birg->allocatable_regs;
-	unsigned  i;
-
-	assert(bitset_size(bs) == cls->n_regs);
-	bitset_clear_all(bs);
-	for (i = 0; i < cls->n_regs; ++i) {
-		const arch_register_t *reg = &cls->regs[i];
-		if (rbitset_is_set(allocatable_regs, reg->global_index))
-			bitset_set(bs, i);
-	}
-}
-
 unsigned be_get_n_allocatable_regs(const ir_graph *irg,
                                    const arch_register_class_t *cls)
 {
-	bitset_t *bs = bitset_alloca(cls->n_regs);
-	be_put_allocatable_regs(irg, cls, bs);
-	return bitset_popcount(bs);
+	unsigned *const bs = rbitset_alloca(cls->n_regs);
+	be_get_allocatable_regs(irg, cls, bs);
+	return rbitset_popcount(bs, cls->n_regs);
 }
 
 void be_get_allocatable_regs(ir_graph const *const irg, arch_register_class_t const *const cls, unsigned *const raw_bitset)

ir/be/bechordal_main.c

@@ -220,7 +220,7 @@ static void pre_spill(be_chordal_env_t *const chordal_env, arch_register_class_t
 	be_assure_live_chk(irg);
 
 	/* put all ignore registers into the ignore register set. */
-	be_put_allocatable_regs(irg, cls, chordal_env->allocatable_regs);
+	be_get_allocatable_regs(irg, cls, chordal_env->allocatable_regs->data);
 
 	be_timer_push(T_RA_CONSTR);
 	be_pre_spill_prepare_constr(irg, cls);