X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.c;h=942e7f51d0ad78969c769e80cd35a0a0cbf324f9;hb=dd4cd761ab637d4488c7e29f49843b1b02366acf;hp=8aeb0c617573d9b3cf74a439c73570b13f3e35e4;hpb=c23b55879df97f49fc6f1e95651f9f28a980b620;p=libfirm

diff --git a/ir/be/bearch.c b/ir/be/bearch.c
index 8aeb0c617..942e7f51d 100644
--- a/ir/be/bearch.c
+++ b/ir/be/bearch.c
@@ -42,23 +42,25 @@
 #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 +335,7 @@ 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;