Do not mark the transformed as visited. It makes no sense at all.

[libfirm] / ir / be / bearch.c

diff --git a/ir/be/bearch.c b/ir/be/bearch.c
index 8aeb0c6..da4d020 100644 (file)
--- a/ir/be/bearch.c
+++ b/ir/be/bearch.c
@@ -33,7 +33,6 @@
 #include "benode_t.h"
 #include "ircons_t.h"
 #include "irnode_t.h"
-#include "xmalloc.h"
 
 #include "bitset.h"
 #include "pset.h"
@@ -42,23 +41,25 @@
 #include "irprintf.h"
 
 /* Initialize the architecture environment struct. */
-arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa_if, FILE *file_handle, be_main_env_t *main_env)
+arch_env_t *arch_env_init(const arch_isa_if_t *isa_if, FILE *file_handle, be_main_env_t *main_env)
 {
-       memset(env, 0, sizeof(*env));
-       env->isa                  = isa_if->init(file_handle);
-       env->isa->main_env        = main_env;
-       return env;
+       arch_env_t *arch_env = isa_if->init(file_handle);
+       arch_env->main_env   = main_env;
+       return arch_env;
 }
 
-int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
+/**
+ * Put all registers in a class into a bitset.
+ * @param cls The class.
+ * @param bs The bitset.
+ * @return The number of registers in the class.
+ */
+static int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
 {
-       if(bs) {
-               int i, n;
-               for(i = 0, n = cls->n_regs; i < n; ++i)
-                       bitset_set(bs, i);
-       }
-
-       return cls->n_regs;
+       int i, n = cls->n_regs;
+       for (i = n - 1; i >= 0; --i)
+               bitset_set(bs, i);
+       return n;
 }
 
 /**
@@ -333,7 +334,7 @@ extern char *arch_register_req_format(char *buf, size_t len,
                }
        }
 
-       if(arch_register_req_is(req, should_be_different)) {
+       if (arch_register_req_is(req, must_be_different)) {
                const unsigned other = req->other_different;
                int i;