lowering: fix i_mapper for new exception attributes

[libfirm] / ir / be / bearch.h

diff --git a/ir/be/bearch.h b/ir/be/bearch.h
index 6a68866..a46ff53 100644 (file)
--- a/ir/be/bearch.h
+++ b/ir/be/bearch.h
@@ -58,24 +58,18 @@ ENUM_BITSET(arch_register_class_flags_t)
 
 typedef enum arch_register_type_t {
        arch_register_type_none         = 0,
-       /** The register must be saved by the caller upon a function call. It thus
-        * can be overwritten in the called function. */
-       arch_register_type_caller_save  = 1U << 0,
-       /** The register must be saved by the caller upon a function call. It thus
-        * can be overwritten in the called function. */
-       arch_register_type_callee_save  = 1U << 1,
        /** Do not consider this register when allocating. */
-       arch_register_type_ignore       = 1U << 2,
+       arch_register_type_ignore       = 1U << 0,
        /** The emitter can choose an arbitrary register. The register fulfills any
         * register constraints as long as the register class matches */
-       arch_register_type_joker        = 1U << 3,
+       arch_register_type_joker        = 1U << 1,
        /** This is just a virtual register. Virtual registers fulfill any register
         * constraints as long as the register class matches. It is a allowed to
         * have multiple definitions for the same virtual register at a point */
-       arch_register_type_virtual      = 1U << 4,
+       arch_register_type_virtual      = 1U << 2,
        /** The register represents a state that should be handled by bestate
         * code */
-       arch_register_type_state        = 1U << 5,
+       arch_register_type_state        = 1U << 3,
 } arch_register_type_t;
 ENUM_BITSET(arch_register_type_t)
 
@@ -588,6 +582,11 @@ struct arch_isa_if_t {
         * The code generator must also be de-allocated here.
         */
        void (*emit)(ir_graph *irg);
+
+       /**
+        * Checks if the given register is callee/caller saved.
+        */
+       int (*register_saved_by)(const arch_register_t *reg, int callee);
 };
 
 #define arch_env_done(env)                             ((env)->impl->done(env))
@@ -728,6 +727,30 @@ static inline const arch_register_req_t **arch_get_in_register_reqs(
        return info->in_reqs;
 }
 
+/**
+ * Check if the given register is callee save, ie. will be save by the callee.
+ */
+static inline bool arch_register_is_callee_save(
+       const arch_env_t      *arch_env,
+       const arch_register_t *reg)
+{
+       if (arch_env->impl->register_saved_by)
+               return arch_env->impl->register_saved_by(reg, /*callee=*/1);
+       return false;
+}
+
+/**
+ * Check if the given register is caller save, ie. must be save by the caller.
+ */
+static inline bool arch_register_is_caller_save(
+       const arch_env_t      *arch_env,
+       const arch_register_t *reg)
+{
+       if (arch_env->impl->register_saved_by)
+               return arch_env->impl->register_saved_by(reg, /*callee=*/0);
+       return false;
+}
+
 /**
  * Iterate over all values defined by an instruction.
  * Only looks at values in a certain register class where the requirements