Fixed some typos.
[libfirm] / ir / be / sparc / sparc_transform.c
index 9f5785c..83d9f45 100644 (file)
@@ -21,7 +21,6 @@
  * @file
  * @brief   code selection (transform FIRM into SPARC FIRM)
  * @author  Hannes Rapp, Matthias Braun
- * @version $Id$
  */
 #include "config.h"
 
 #include "error.h"
 #include "util.h"
 
-#include "../benode.h"
-#include "../beirg.h"
-#include "../beutil.h"
-#include "../betranshlp.h"
-#include "../beabihelper.h"
+#include "benode.h"
+#include "beirg.h"
+#include "beutil.h"
+#include "betranshlp.h"
+#include "beabihelper.h"
 #include "bearch_sparc_t.h"
 
 #include "sparc_nodes_attr.h"
 
 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
 
+typedef struct reg_info_t {
+       size_t   offset;
+       ir_node *irn;
+} reg_info_t;
+
 static const arch_register_t *sp_reg = &sparc_registers[REG_SP];
 static const arch_register_t *fp_reg = &sparc_registers[REG_FRAME_POINTER];
 static calling_convention_t  *current_cconv = NULL;
@@ -71,14 +75,11 @@ static ir_mode               *mode_fp;
 static ir_mode               *mode_fp2;
 //static ir_mode               *mode_fp4;
 static pmap                  *node_to_stack;
-static size_t                 start_mem_offset;
-static ir_node               *start_mem;
-static size_t                 start_g0_offset;
-static ir_node               *start_g0;
-static size_t                 start_sp_offset;
-static ir_node               *start_sp;
-static size_t                 start_fp_offset;
-static ir_node               *start_fp;
+static reg_info_t             start_mem;
+static reg_info_t             start_g0;
+static reg_info_t             start_g7;
+static reg_info_t             start_sp;
+static reg_info_t             start_fp;
 static ir_node               *frame_base;
 static size_t                 start_params_offset;
 static size_t                 start_callee_saves_offset;
@@ -149,20 +150,6 @@ static ir_node *gen_sign_extension(dbg_info *dbgi, ir_node *block, ir_node *op,
        return rshift_node;
 }
 
-/**
- * returns true if it is assured, that the upper bits of a node are "clean"
- * which means for a 16 or 8 bit value, that the upper bits in the register
- * are 0 for unsigned and a copy of the last significant bit for signed
- * numbers.
- */
-static bool upper_bits_clean(ir_node *transformed_node, ir_mode *mode)
-{
-       (void) transformed_node;
-       (void) mode;
-       /* TODO */
-       return false;
-}
-
 /**
  * Extend a value to 32 bit signed/unsigned depending on its mode.
  *
@@ -175,8 +162,7 @@ static ir_node *gen_extension(dbg_info *dbgi, ir_node *block, ir_node *op,
                               ir_mode *orig_mode)
 {
        int bits = get_mode_size_bits(orig_mode);
-       if (bits == 32)
-               return op;
+       assert(bits < 32);
 
        if (mode_is_signed(orig_mode)) {
                return gen_sign_extension(dbgi, block, op, bits);
@@ -212,13 +198,17 @@ static bool is_imm_encodeable(const ir_node *node)
        return sparc_is_value_imm_encodeable(value);
 }
 
-static bool needs_extension(ir_mode *mode)
+static bool needs_extension(ir_node *op)
 {
-       return get_mode_size_bits(mode) < get_mode_size_bits(mode_gp);
+       ir_mode *mode = get_irn_mode(op);
+       unsigned gp_bits = get_mode_size_bits(mode_gp);
+       if (get_mode_size_bits(mode) >= gp_bits)
+               return false;
+       return !be_upper_bits_clean(op, mode);
 }
 
 /**
- * Check, if a given node is a Down-Conv, ie. a integer Conv
+ * Check, if a given node is a Down-Conv, i.e. a integer Conv
  * from a mode with a mode with more bits to a mode with lesser bits.
  * Moreover, we return only true if the node has not more than 1 user.
  *
@@ -241,7 +231,7 @@ static bool is_downconv(const ir_node *node)
                get_mode_size_bits(dest_mode) <= get_mode_size_bits(src_mode);
 }
 
-static ir_node *sparc_skip_downconv(ir_node *node)
+static ir_node *skip_downconv(ir_node *node)
 {
        while (is_downconv(node)) {
                node = get_Conv_op(node);
@@ -269,8 +259,8 @@ static ir_node *gen_helper_binop_args(ir_node *node,
        ir_mode  *mode2;
 
        if (flags & MATCH_MODE_NEUTRAL) {
-               op1 = sparc_skip_downconv(op1);
-               op2 = sparc_skip_downconv(op2);
+               op1 = skip_downconv(op1);
+               op2 = skip_downconv(op2);
        }
        mode1 = get_irn_mode(op1);
        mode2 = get_irn_mode(op2);
@@ -281,13 +271,13 @@ static ir_node *gen_helper_binop_args(ir_node *node,
        if (is_imm_encodeable(op2)) {
                int32_t  immediate = get_tarval_long(get_Const_tarval(op2));
                new_op1 = be_transform_node(op1);
-               if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(mode1)) {
+               if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(op1)) {
                        new_op1 = gen_extension(dbgi, block, new_op1, mode1);
                }
                return new_imm(dbgi, block, new_op1, NULL, immediate);
        }
        new_op2 = be_transform_node(op2);
-       if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(mode2)) {
+       if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(op2)) {
                new_op2 = gen_extension(dbgi, block, new_op2, mode2);
        }
 
@@ -297,7 +287,7 @@ static ir_node *gen_helper_binop_args(ir_node *node,
        }
 
        new_op1 = be_transform_node(op1);
-       if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(mode1)) {
+       if (! (flags & MATCH_MODE_NEUTRAL) && needs_extension(op1)) {
                new_op1 = gen_extension(dbgi, block, new_op1, mode1);
        }
        return new_reg(dbgi, block, new_op1, new_op2);
@@ -404,15 +394,50 @@ static ir_node *gen_helper_binopx(ir_node *node, match_flags_t match_flags,
 
 }
 
-static ir_node *get_g0(ir_graph *irg)
+static ir_node *get_reg(ir_graph *const irg, reg_info_t *const reg)
 {
-       if (start_g0 == NULL) {
+       if (!reg->irn) {
                /* this is already the transformed start node */
-               ir_node *start = get_irg_start(irg);
+               ir_node *const start = get_irg_start(irg);
                assert(is_sparc_Start(start));
-               start_g0 = new_r_Proj(start, mode_gp, start_g0_offset);
+               arch_register_class_t const *const cls = arch_get_irn_register_req_out(start, reg->offset)->cls;
+               reg->irn = new_r_Proj(start, cls ? cls->mode : mode_M, reg->offset);
+       }
+       return reg->irn;
+}
+
+static ir_node *get_g0(ir_graph *irg)
+{
+       return get_reg(irg, &start_g0);
+}
+
+static ir_node *get_g7(ir_graph *irg)
+{
+       return get_reg(irg, &start_g7);
+}
+
+static ir_node *make_tls_offset(dbg_info *dbgi, ir_node *block,
+                                ir_entity *entity, int32_t offset)
+{
+       ir_node  *hi  = new_bd_sparc_SetHi(dbgi, block, entity, offset);
+       ir_node  *low = new_bd_sparc_Xor_imm(dbgi, block, hi, entity, offset);
+       return low;
+}
+
+static ir_node *make_address(dbg_info *dbgi, ir_node *block, ir_entity *entity,
+                             int32_t offset)
+{
+       if (get_entity_owner(entity) == get_tls_type()) {
+               ir_graph *irg     = get_irn_irg(block);
+               ir_node  *g7      = get_g7(irg);
+               ir_node  *offsetn = make_tls_offset(dbgi, block, entity, offset);
+               ir_node  *add     = new_bd_sparc_Add_reg(dbgi, block, g7, offsetn);
+               return add;
+       } else {
+               ir_node *hi  = new_bd_sparc_SetHi(dbgi, block, entity, offset);
+               ir_node *low = new_bd_sparc_Or_imm(dbgi, block, hi, entity, offset);
+               return low;
        }
-       return start_g0;
 }
 
 typedef struct address_t {
@@ -446,15 +471,28 @@ static void match_address(ir_node *ptr, address_t *address, bool use_ptr2)
         * won't save anything but produce multiple sethi+or combinations with
         * just different offsets */
        if (is_SymConst(base) && get_irn_n_edges(base) == 1) {
-               dbg_info *dbgi      = get_irn_dbg_info(ptr);
-               ir_node  *block     = get_nodes_block(ptr);
-               ir_node  *new_block = be_transform_node(block);
-               entity = get_SymConst_entity(base);
-               base   = new_bd_sparc_SetHi(dbgi, new_block, entity, offset);
-       } else if (use_ptr2 && is_Add(base) && entity == NULL && offset == 0) {
+               ir_entity *sc_entity = get_SymConst_entity(base);
+               dbg_info  *dbgi      = get_irn_dbg_info(ptr);
+               ir_node   *block     = get_nodes_block(ptr);
+               ir_node   *new_block = be_transform_node(block);
+
+               if (get_entity_owner(sc_entity) == get_tls_type()) {
+                       if (!use_ptr2) {
+                               goto only_offset;
+                       } else {
+                               ptr2   = make_tls_offset(dbgi, new_block, sc_entity, offset);
+                               offset = 0;
+                               base   = get_g7(get_irn_irg(base));
+                       }
+               } else {
+                       entity = sc_entity;
+                       base   = new_bd_sparc_SetHi(dbgi, new_block, entity, offset);
+               }
+       } else if (use_ptr2 && is_Add(base) && offset == 0) {
                ptr2 = be_transform_node(get_Add_right(base));
                base = be_transform_node(get_Add_left(base));
        } else {
+only_offset:
                if (sparc_is_value_imm_encodeable(offset)) {
                        base = be_transform_node(base);
                } else {
@@ -538,7 +576,7 @@ static ir_node *gen_Proj_AddCC_t(ir_node *node)
        case pn_sparc_AddCC_t_flags:
                return new_r_Proj(new_pred, mode_flags, pn_sparc_AddCC_flags);
        default:
-               panic("Invalid AddCC_t proj found");
+               panic("Invalid proj found");
        }
 }
 
@@ -585,7 +623,7 @@ static ir_node *gen_Proj_SubCC_t(ir_node *node)
        case pn_sparc_SubCC_t_flags:
                return new_r_Proj(new_pred, mode_flags, pn_sparc_SubCC_flags);
        default:
-               panic("Invalid SubCC_t proj found");
+               panic("Invalid proj found");
        }
 }
 
@@ -652,7 +690,7 @@ static ir_node *gen_Load(ir_node *node)
        address_t address;
 
        if (get_Load_unaligned(node) == align_non_aligned) {
-               panic("sparc: transformation of unaligned Loads not implemented yet");
+               panic("transformation of unaligned Loads not implemented yet");
        }
 
        if (mode_is_float(mode)) {
@@ -689,23 +727,31 @@ static ir_node *gen_Store(ir_node *node)
        ir_node  *mem      = get_Store_mem(node);
        ir_node  *new_mem  = be_transform_node(mem);
        ir_node  *val      = get_Store_value(node);
-       ir_node  *new_val  = be_transform_node(val);
        ir_mode  *mode     = get_irn_mode(val);
        dbg_info *dbgi     = get_irn_dbg_info(node);
        ir_node  *new_store = NULL;
        address_t address;
 
        if (get_Store_unaligned(node) == align_non_aligned) {
-               panic("sparc: transformation of unaligned Stores not implemented yet");
+               panic("transformation of unaligned Stores not implemented yet");
        }
 
        if (mode_is_float(mode)) {
+               ir_node *new_val = be_transform_node(val);
                /* TODO: variants with reg+reg address mode */
                match_address(ptr, &address, false);
                new_store = create_stf(dbgi, block, new_val, address.ptr, new_mem,
                                       mode, address.entity, address.offset, false);
        } else {
-               assert(get_mode_size_bits(mode) <= 32);
+               ir_node *new_val;
+               unsigned dest_bits = get_mode_size_bits(mode);
+               while (is_downconv(node)
+                      && get_mode_size_bits(get_irn_mode(node)) >= dest_bits) {
+                   val = get_Conv_op(val);
+               }
+               new_val = be_transform_node(val);
+
+               assert(dest_bits <= 32);
                match_address(ptr, &address, true);
                if (address.ptr2 != NULL) {
                        assert(address.entity == NULL && address.offset == 0);
@@ -754,8 +800,13 @@ static ir_node *gen_Mulh(ir_node *node)
        if (mode_is_float(mode))
                panic("FP not supported yet");
 
-       mul = gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Mulh_reg, new_bd_sparc_Mulh_imm);
-       return new_r_Proj(mul, mode_gp, pn_sparc_Mulh_low);
+       if (mode_is_signed(mode)) {
+               mul = gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_SMulh_reg, new_bd_sparc_SMulh_imm);
+               return new_r_Proj(mul, mode_gp, pn_sparc_SMulh_low);
+       } else {
+               mul = gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_UMulh_reg, new_bd_sparc_UMulh_imm);
+               return new_r_Proj(mul, mode_gp, pn_sparc_UMulh_low);
+       }
 }
 
 static ir_node *gen_sign_extension_value(ir_node *node)
@@ -844,22 +895,41 @@ static ir_node *gen_helper_bitop(ir_node *node,
                                  new_binop_reg_func new_reg,
                                  new_binop_imm_func new_imm,
                                  new_binop_reg_func new_not_reg,
-                                 new_binop_imm_func new_not_imm)
+                                 new_binop_imm_func new_not_imm,
+                                 match_flags_t flags)
 {
        ir_node *op1 = get_binop_left(node);
        ir_node *op2 = get_binop_right(node);
        if (is_Not(op1)) {
                return gen_helper_binop_args(node, op2, get_Not_op(op1),
-                                            MATCH_MODE_NEUTRAL,
+                                            flags,
                                             new_not_reg, new_not_imm);
        }
        if (is_Not(op2)) {
                return gen_helper_binop_args(node, op1, get_Not_op(op2),
-                                            MATCH_MODE_NEUTRAL,
+                                            flags,
                                             new_not_reg, new_not_imm);
        }
+       if (is_Const(op2) && get_irn_n_edges(op2) == 1) {
+               ir_tarval *tv    = get_Const_tarval(op2);
+               long       value = get_tarval_long(tv);
+               if (!sparc_is_value_imm_encodeable(value)) {
+                       long notvalue = ~value;
+                       if ((notvalue & 0x3ff) == 0) {
+                               ir_node  *block     = get_nodes_block(node);
+                               ir_node  *new_block = be_transform_node(block);
+                               dbg_info *dbgi      = get_irn_dbg_info(node);
+                               ir_node  *new_op2
+                                       = new_bd_sparc_SetHi(NULL, new_block, NULL, notvalue);
+                               ir_node  *new_op1   = be_transform_node(op1);
+                               ir_node  *result
+                                       = new_not_reg(dbgi, new_block, new_op1, new_op2);
+                               return result;
+                       }
+               }
+       }
        return gen_helper_binop_args(node, op1, op2,
-                                                                MATCH_MODE_NEUTRAL | MATCH_COMMUTATIVE,
+                                                                flags | MATCH_COMMUTATIVE,
                                                                 new_reg, new_imm);
 }
 
@@ -869,7 +939,8 @@ static ir_node *gen_And(ir_node *node)
                                new_bd_sparc_And_reg,
                                new_bd_sparc_And_imm,
                                new_bd_sparc_AndN_reg,
-                               new_bd_sparc_AndN_imm);
+                               new_bd_sparc_AndN_imm,
+                               MATCH_MODE_NEUTRAL);
 }
 
 static ir_node *gen_Or(ir_node *node)
@@ -878,7 +949,8 @@ static ir_node *gen_Or(ir_node *node)
                                new_bd_sparc_Or_reg,
                                new_bd_sparc_Or_imm,
                                new_bd_sparc_OrN_reg,
-                               new_bd_sparc_OrN_imm);
+                               new_bd_sparc_OrN_imm,
+                               MATCH_MODE_NEUTRAL);
 }
 
 static ir_node *gen_Eor(ir_node *node)
@@ -887,14 +959,15 @@ static ir_node *gen_Eor(ir_node *node)
                                new_bd_sparc_Xor_reg,
                                new_bd_sparc_Xor_imm,
                                new_bd_sparc_XNor_reg,
-                               new_bd_sparc_XNor_imm);
+                               new_bd_sparc_XNor_imm,
+                               MATCH_MODE_NEUTRAL);
 }
 
 static ir_node *gen_Shl(ir_node *node)
 {
        ir_mode *mode = get_irn_mode(node);
        if (get_mode_modulo_shift(mode) != 32)
-               panic("modulo_shift!=32 not supported by sparc backend");
+               panic("modulo_shift!=32 not supported");
        return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sll_reg, new_bd_sparc_Sll_imm);
 }
 
@@ -902,7 +975,7 @@ static ir_node *gen_Shr(ir_node *node)
 {
        ir_mode *mode = get_irn_mode(node);
        if (get_mode_modulo_shift(mode) != 32)
-               panic("modulo_shift!=32 not supported by sparc backend");
+               panic("modulo_shift!=32 not supported");
        return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Srl_reg, new_bd_sparc_Srl_imm);
 }
 
@@ -910,7 +983,7 @@ static ir_node *gen_Shrs(ir_node *node)
 {
        ir_mode *mode = get_irn_mode(node);
        if (get_mode_modulo_shift(mode) != 32)
-               panic("modulo_shift!=32 not supported by sparc backend");
+               panic("modulo_shift!=32 not supported");
        return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sra_reg, new_bd_sparc_Sra_imm);
 }
 
@@ -941,11 +1014,11 @@ static ir_node *gen_Minus(ir_node *node)
 /**
  * Create an entity for a given (floating point) tarval
  */
-static ir_entity *create_float_const_entity(ir_tarval *tv)
+static ir_entity *create_float_const_entity(ir_graph *const irg, ir_tarval *const tv)
 {
-       const arch_env_t *arch_env = be_get_irg_arch_env(current_ir_graph);
+       const arch_env_t *arch_env = be_get_irg_arch_env(irg);
        sparc_isa_t      *isa      = (sparc_isa_t*) arch_env;
-       ir_entity        *entity   = (ir_entity*) pmap_get(isa->constants, tv);
+       ir_entity        *entity   = pmap_get(ir_entity, isa->constants, tv);
        ir_initializer_t *initializer;
        ir_mode          *mode;
        ir_type          *type;
@@ -970,9 +1043,10 @@ static ir_entity *create_float_const_entity(ir_tarval *tv)
 
 static ir_node *gen_float_const(dbg_info *dbgi, ir_node *block, ir_tarval *tv)
 {
-       ir_entity *entity = create_float_const_entity(tv);
+       ir_graph  *irg    = get_Block_irg(block);
+       ir_entity *entity = create_float_const_entity(irg, tv);
        ir_node   *hi     = new_bd_sparc_SetHi(dbgi, block, entity, 0);
-       ir_node   *mem    = get_irg_no_mem(current_ir_graph);
+       ir_node   *mem    = get_irg_no_mem(irg);
        ir_mode   *mode   = get_tarval_mode(tv);
        ir_node   *new_op
                = create_ldf(dbgi, block, hi, mem, mode, entity, 0, false);
@@ -982,67 +1056,58 @@ static ir_node *gen_float_const(dbg_info *dbgi, ir_node *block, ir_tarval *tv)
        return proj;
 }
 
-static ir_node *gen_Const(ir_node *node)
+static ir_node *create_int_const(ir_node *block, int32_t value)
 {
-       ir_node   *block = be_transform_node(get_nodes_block(node));
-       ir_mode   *mode  = get_irn_mode(node);
-       dbg_info  *dbgi  = get_irn_dbg_info(node);
-       ir_tarval *tv    = get_Const_tarval(node);
-       long       value;
-
-       if (mode_is_float(mode)) {
-               return gen_float_const(dbgi, block, tv);
-       }
-
-       value = get_tarval_long(tv);
        if (value == 0) {
-               return get_g0(get_irn_irg(node));
+               ir_graph *irg = get_irn_irg(block);
+               return get_g0(irg);
        } else if (sparc_is_value_imm_encodeable(value)) {
-               ir_graph *irg = get_irn_irg(node);
-               return new_bd_sparc_Or_imm(dbgi, block, get_g0(irg), NULL, value);
+               ir_graph *irg = get_irn_irg(block);
+               return new_bd_sparc_Or_imm(NULL, block, get_g0(irg), NULL, value);
        } else {
-               ir_node *hi = new_bd_sparc_SetHi(dbgi, block, NULL, value);
+               ir_node *hi = new_bd_sparc_SetHi(NULL, block, NULL, value);
                if ((value & 0x3ff) != 0) {
-                       return new_bd_sparc_Or_imm(dbgi, block, hi, NULL, value & 0x3ff);
+                       return new_bd_sparc_Or_imm(NULL, block, hi, NULL, value & 0x3ff);
                } else {
                        return hi;
                }
        }
 }
 
-static ir_mode *get_cmp_mode(ir_node *b_value)
+static ir_node *gen_Const(ir_node *node)
 {
-       ir_node *op;
-
-       if (!is_Cmp(b_value))
-               panic("can't determine cond signednes (no cmp)");
-       op = get_Cmp_left(b_value);
-       return get_irn_mode(op);
-}
+       ir_node   *block = be_transform_node(get_nodes_block(node));
+       ir_mode   *mode  = get_irn_mode(node);
+       dbg_info  *dbgi  = get_irn_dbg_info(node);
+       ir_tarval *tv    = get_Const_tarval(node);
+       int32_t    val;
 
-static ir_node *make_address(dbg_info *dbgi, ir_node *block, ir_entity *entity,
-                             int32_t offset)
-{
-       ir_node *hi  = new_bd_sparc_SetHi(dbgi, block, entity, offset);
-       ir_node *low = new_bd_sparc_Or_imm(dbgi, block, hi, entity, offset);
+       if (mode_is_float(mode)) {
+               return gen_float_const(dbgi, block, tv);
+       }
 
-       if (get_entity_owner(entity) == get_tls_type())
-               panic("thread local storage not supported yet in sparc backend");
-       return low;
+       assert(get_mode_size_bits(get_tarval_mode(tv)) <= 32);
+       val = (int32_t)get_tarval_long(tv);
+       return create_int_const(block, val);
 }
 
-static ir_node *gen_SwitchJmp(ir_node *node)
+static ir_node *gen_Switch(ir_node *node)
 {
-       dbg_info        *dbgi         = get_irn_dbg_info(node);
-       ir_node         *block        = be_transform_node(get_nodes_block(node));
-       ir_node         *selector     = get_Cond_selector(node);
-       ir_node         *new_selector = be_transform_node(selector);
-       long             default_pn   = get_Cond_default_proj(node);
-       ir_entity       *entity;
-       ir_node         *table_address;
-       ir_node         *idx;
-       ir_node         *load;
-       ir_node         *address;
+       dbg_info              *dbgi         = get_irn_dbg_info(node);
+       ir_node               *block        = get_nodes_block(node);
+       ir_node               *new_block    = be_transform_node(block);
+       ir_graph              *irg          = get_irn_irg(block);
+       ir_node               *selector     = get_Switch_selector(node);
+       ir_node               *new_selector = be_transform_node(selector);
+       const ir_switch_table *table        = get_Switch_table(node);
+       unsigned               n_outs       = get_Switch_n_outs(node);
+       ir_entity             *entity;
+       ir_node               *table_address;
+       ir_node               *idx;
+       ir_node               *load;
+       ir_node               *address;
+
+       table = ir_switch_table_duplicate(irg, table);
 
        /* switch with smaller mode not implemented yet */
        assert(get_mode_size_bits(get_irn_mode(selector)) == 32);
@@ -1052,65 +1117,40 @@ static ir_node *gen_SwitchJmp(ir_node *node)
        add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
 
        /* construct base address */
-       table_address = make_address(dbgi, block, entity, 0);
+       table_address = make_address(dbgi, new_block, entity, 0);
        /* scale index */
-       idx = new_bd_sparc_Sll_imm(dbgi, block, new_selector, NULL, 2);
+       idx = new_bd_sparc_Sll_imm(dbgi, new_block, new_selector, NULL, 2);
        /* load from jumptable */
-       load = new_bd_sparc_Ld_reg(dbgi, block, table_address, idx,
-                                  get_irg_no_mem(current_ir_graph),
+       load = new_bd_sparc_Ld_reg(dbgi, new_block, table_address, idx,
+                                  get_irg_no_mem(irg),
                                   mode_gp);
        address = new_r_Proj(load, mode_gp, pn_sparc_Ld_res);
 
-       return new_bd_sparc_SwitchJmp(dbgi, block, address, default_pn, entity);
+       return new_bd_sparc_SwitchJmp(dbgi, new_block, address, n_outs, table, entity);
 }
 
 static ir_node *gen_Cond(ir_node *node)
 {
        ir_node    *selector = get_Cond_selector(node);
-       ir_mode    *mode     = get_irn_mode(selector);
+       ir_node    *cmp_left;
+       ir_mode    *cmp_mode;
        ir_node    *block;
        ir_node    *flag_node;
-       bool        is_unsigned;
        ir_relation relation;
        dbg_info   *dbgi;
 
-       /* switch/case jumps */
-       if (mode != mode_b) {
-               return gen_SwitchJmp(node);
-       }
-
-       block = be_transform_node(get_nodes_block(node));
-       dbgi  = get_irn_dbg_info(node);
-
-       /* regular if/else jumps */
-       if (is_Cmp(selector)) {
-               ir_mode *cmp_mode;
-
-               cmp_mode    = get_cmp_mode(selector);
-               flag_node   = be_transform_node(selector);
-               relation    = get_Cmp_relation(selector);
-               is_unsigned = !mode_is_signed(cmp_mode);
-               if (mode_is_float(cmp_mode)) {
-                       assert(!is_unsigned);
-                       return new_bd_sparc_fbfcc(dbgi, block, flag_node, relation);
-               } else {
-                       return new_bd_sparc_Bicc(dbgi, block, flag_node, relation, is_unsigned);
-               }
+       /* note: after lower_mode_b we are guaranteed to have a Cmp input */
+       block       = be_transform_node(get_nodes_block(node));
+       dbgi        = get_irn_dbg_info(node);
+       cmp_left    = get_Cmp_left(selector);
+       cmp_mode    = get_irn_mode(cmp_left);
+       flag_node   = be_transform_node(selector);
+       relation    = get_Cmp_relation(selector);
+       if (mode_is_float(cmp_mode)) {
+               return new_bd_sparc_fbfcc(dbgi, block, flag_node, relation);
        } else {
-               /* in this case, the selector must already deliver a mode_b value.
-                * this happens, for example, when the Cond is connected to a Conv
-                * which converts its argument to mode_b. */
-               ir_node  *new_op;
-               ir_graph *irg;
-               assert(mode == mode_b);
-
-               block     = be_transform_node(get_nodes_block(node));
-               irg       = get_irn_irg(block);
-               dbgi      = get_irn_dbg_info(node);
-               new_op    = be_transform_node(selector);
-               /* follow the SPARC architecture manual and use orcc for tst */
-               flag_node = new_bd_sparc_OrCCZero_reg(dbgi, block, new_op, get_g0(irg));
-               return new_bd_sparc_Bicc(dbgi, block, flag_node, ir_relation_less_greater, true);
+               bool is_unsigned = !mode_is_signed(cmp_mode);
+               return new_bd_sparc_Bicc(dbgi, block, flag_node, relation, is_unsigned);
        }
 }
 
@@ -1150,19 +1190,34 @@ static ir_node *gen_Cmp(ir_node *node)
                                                new_bd_sparc_AndCCZero_reg,
                                                new_bd_sparc_AndCCZero_imm,
                                                new_bd_sparc_AndNCCZero_reg,
-                                               new_bd_sparc_AndNCCZero_imm);
+                                               new_bd_sparc_AndNCCZero_imm,
+                                               MATCH_NONE);
                } else if (is_Or(op1)) {
                        return gen_helper_bitop(op1,
                                                new_bd_sparc_OrCCZero_reg,
                                                new_bd_sparc_OrCCZero_imm,
                                                new_bd_sparc_OrNCCZero_reg,
-                                               new_bd_sparc_OrNCCZero_imm);
+                                               new_bd_sparc_OrNCCZero_imm,
+                                               MATCH_NONE);
                } else if (is_Eor(op1)) {
                        return gen_helper_bitop(op1,
                                                new_bd_sparc_XorCCZero_reg,
                                                new_bd_sparc_XorCCZero_imm,
                                                new_bd_sparc_XNorCCZero_reg,
-                                               new_bd_sparc_XNorCCZero_imm);
+                                               new_bd_sparc_XNorCCZero_imm,
+                                               MATCH_NONE);
+               } else if (is_Add(op1)) {
+                       return gen_helper_binop(op1, MATCH_COMMUTATIVE,
+                                               new_bd_sparc_AddCCZero_reg,
+                                               new_bd_sparc_AddCCZero_imm);
+               } else if (is_Sub(op1)) {
+                       return gen_helper_binop(op1, MATCH_NONE,
+                                               new_bd_sparc_SubCCZero_reg,
+                                               new_bd_sparc_SubCCZero_imm);
+               } else if (is_Mul(op1)) {
+                       return gen_helper_binop(op1, MATCH_COMMUTATIVE,
+                                               new_bd_sparc_MulCCZero_reg,
+                                               new_bd_sparc_MulCCZero_imm);
                }
        }
 
@@ -1231,8 +1286,9 @@ static ir_node *create_ftoi(dbg_info *dbgi, ir_node *block, ir_node *op,
        ir_graph *irg   = get_irn_irg(block);
        ir_node  *sp    = get_irg_frame(irg);
        ir_node  *nomem = get_irg_no_mem(irg);
-       ir_node  *stf   = create_stf(dbgi, block, ftoi, sp, nomem, src_mode,
+       ir_node  *stf   = create_stf(dbgi, block, ftoi, sp, nomem, mode_fp,
                                     NULL, 0, true);
+       arch_add_irn_flags(stf, arch_irn_flags_spill);
        ir_node  *ld    = new_bd_sparc_Ld_imm(dbgi, block, sp, stf, mode_gp,
                                              NULL, 0, true);
        ir_node  *res   = new_r_Proj(ld, mode_gp, pn_sparc_Ld_res);
@@ -1250,6 +1306,7 @@ static ir_node *create_itof(dbg_info *dbgi, ir_node *block, ir_node *op,
        ir_node  *nomem = get_irg_no_mem(irg);
        ir_node  *st    = new_bd_sparc_St_imm(dbgi, block, op, sp, nomem,
                                              mode_gp, NULL, 0, true);
+       arch_add_irn_flags(st, arch_irn_flags_spill);
        ir_node  *ldf   = new_bd_sparc_Ldf_s(dbgi, block, sp, st, mode_fp,
                                             NULL, 0, true);
        ir_node  *res   = new_r_Proj(ldf, mode_fp, pn_sparc_Ldf_res);
@@ -1282,13 +1339,13 @@ static ir_node *gen_Conv(ir_node *node)
        if (src_mode == mode_b)
                panic("ConvB not lowered %+F", node);
 
-       new_op = be_transform_node(op);
        if (src_mode == dst_mode)
-               return new_op;
+               return be_transform_node(op);
 
        if (mode_is_float(src_mode) || mode_is_float(dst_mode)) {
                assert((src_bits <= 64 && dst_bits <= 64) && "quad FP not implemented");
 
+               new_op = be_transform_node(op);
                if (mode_is_float(src_mode)) {
                        if (mode_is_float(dst_mode)) {
                                /* float -> float conv */
@@ -1296,7 +1353,7 @@ static ir_node *gen_Conv(ir_node *node)
                        } else {
                                /* float -> int conv */
                                if (!mode_is_signed(dst_mode))
-                                       panic("float to unsigned not implemented yet");
+                                       panic("float to unsigned not lowered");
                                return create_ftoi(dbgi, block, new_op, src_mode);
                        }
                } else {
@@ -1308,38 +1365,21 @@ static ir_node *gen_Conv(ir_node *node)
                        }
                        return create_itof(dbgi, block, new_op, dst_mode);
                }
-       } else if (src_mode == mode_b) {
-               panic("ConvB not lowered %+F", node);
        } else { /* complete in gp registers */
-               int min_bits;
-               ir_mode *min_mode;
-
-               if (src_bits == dst_bits) {
+               if (src_bits >= dst_bits || dst_mode == mode_b) {
                        /* kill unnecessary conv */
-                       return new_op;
+                       return be_transform_node(op);
                }
 
-               if (dst_mode == mode_b) {
-                       /* mode_b lowering already took care that we only have 0/1 values */
-                       return new_op;
+               if (be_upper_bits_clean(op, src_mode)) {
+                       return be_transform_node(op);
                }
+               new_op = be_transform_node(op);
 
-               if (src_bits < dst_bits) {
-                       min_bits = src_bits;
-                       min_mode = src_mode;
+               if (mode_is_signed(src_mode)) {
+                       return gen_sign_extension(dbgi, block, new_op, src_bits);
                } else {
-                       min_bits = dst_bits;
-                       min_mode = dst_mode;
-               }
-
-               if (upper_bits_clean(new_op, min_mode)) {
-                       return new_op;
-               }
-
-               if (mode_is_signed(min_mode)) {
-                       return gen_sign_extension(dbgi, block, new_op, min_bits);
-               } else {
-                       return gen_zero_extension(dbgi, block, new_op, min_bits);
+                       return gen_zero_extension(dbgi, block, new_op, src_bits);
                }
        }
 }
@@ -1359,6 +1399,15 @@ static ir_node *gen_Unknown(ir_node *node)
        panic("Unexpected Unknown mode");
 }
 
+static void make_start_out(reg_info_t *const info, struct obstack *const obst, ir_node *const start, size_t const offset, arch_register_t const *const reg, arch_register_req_type_t const flags)
+{
+       info->offset = offset;
+       info->irn    = NULL;
+       arch_register_req_t const *const req = be_create_reg_req(obst, reg, arch_register_req_type_ignore | flags);
+       arch_set_irn_register_req_out(start, offset, req);
+       arch_set_irn_register_out(start, offset, reg);
+}
+
 /**
  * transform the start node to the prolog code
  */
@@ -1371,17 +1420,14 @@ static ir_node *gen_Start(ir_node *node)
        ir_node   *new_block     = be_transform_node(block);
        dbg_info  *dbgi          = get_irn_dbg_info(node);
        struct obstack *obst     = be_get_be_obst(irg);
-       const arch_register_req_t *req;
        size_t     n_outs;
        ir_node   *start;
        size_t     i;
-       size_t     o;
 
        /* start building list of start constraints */
-       assert(obstack_object_size(obst) == 0);
 
        /* calculate number of outputs */
-       n_outs = 3; /* memory, zero, sp */
+       n_outs = 4; /* memory, g0, g7, sp */
        if (!current_cconv->omit_fp)
                ++n_outs; /* framepointer */
        /* function parameters */
@@ -1393,35 +1439,25 @@ static ir_node *gen_Start(ir_node *node)
 
        start = new_bd_sparc_Start(dbgi, new_block, n_outs);
 
-       o = 0;
+       size_t o = 0;
 
        /* first output is memory */
-       start_mem_offset = o;
+       start_mem.offset = o;
+       start_mem.irn    = NULL;
        arch_set_irn_register_req_out(start, o, arch_no_register_req);
        ++o;
 
        /* the zero register */
-       start_g0_offset = o;
-       req = be_create_reg_req(obst, &sparc_registers[REG_G0],
-                               arch_register_req_type_ignore);
-       arch_set_irn_register_req_out(start, o, req);
-       arch_set_irn_register_out(start, o, &sparc_registers[REG_G0]);
-       ++o;
+       make_start_out(&start_g0, obst, start, o++, &sparc_registers[REG_G0], arch_register_req_type_none);
+
+       /* g7 is used for TLS data */
+       make_start_out(&start_g7, obst, start, o++, &sparc_registers[REG_G7], arch_register_req_type_none);
 
        /* we need an output for the stackpointer */
-       start_sp_offset = o;
-       req = be_create_reg_req(obst, sp_reg,
-                       arch_register_req_type_produces_sp | arch_register_req_type_ignore);
-       arch_set_irn_register_req_out(start, o, req);
-       arch_set_irn_register_out(start, o, sp_reg);
-       ++o;
+       make_start_out(&start_sp, obst, start, o++, sp_reg, arch_register_req_type_produces_sp);
 
        if (!current_cconv->omit_fp) {
-               start_fp_offset = o;
-               req = be_create_reg_req(obst, fp_reg, arch_register_req_type_ignore);
-               arch_set_irn_register_req_out(start, o, req);
-               arch_set_irn_register_out(start, o, fp_reg);
-               ++o;
+               make_start_out(&start_fp, obst, start, o++, fp_reg, arch_register_req_type_none);
        }
 
        /* function parameters in registers */
@@ -1461,29 +1497,17 @@ static ir_node *gen_Start(ir_node *node)
 
 static ir_node *get_initial_sp(ir_graph *irg)
 {
-       if (start_sp == NULL) {
-               ir_node *start = get_irg_start(irg);
-               start_sp = new_r_Proj(start, mode_gp, start_sp_offset);
-       }
-       return start_sp;
+       return get_reg(irg, &start_sp);
 }
 
 static ir_node *get_initial_fp(ir_graph *irg)
 {
-       if (start_fp == NULL) {
-               ir_node *start = get_irg_start(irg);
-               start_fp = new_r_Proj(start, mode_gp, start_fp_offset);
-       }
-       return start_fp;
+       return get_reg(irg, &start_fp);
 }
 
 static ir_node *get_initial_mem(ir_graph *irg)
 {
-       if (start_mem == NULL) {
-               ir_node *start = get_irg_start(irg);
-               start_mem = new_r_Proj(start, mode_M, start_mem_offset);
-       }
-       return start_mem;
+       return get_reg(irg, &start_mem);
 }
 
 static ir_node *get_stack_pointer_for(ir_node *node)
@@ -1500,7 +1524,7 @@ static ir_node *get_stack_pointer_for(ir_node *node)
        }
 
        be_transform_node(stack_pred);
-       stack = (ir_node*)pmap_get(node_to_stack, stack_pred);
+       stack = pmap_get(ir_node, node_to_stack, stack_pred);
        if (stack == NULL) {
                return get_stack_pointer_for(stack_pred);
        }
@@ -1581,7 +1605,7 @@ static ir_node *gen_Return(ir_node *node)
 static ir_node *bitcast_int_to_float(dbg_info *dbgi, ir_node *block,
                                      ir_node *value0, ir_node *value1)
 {
-       ir_graph *irg   = current_ir_graph;
+       ir_graph *irg   = get_Block_irg(block);
        ir_node  *sp    = get_irg_frame(irg);
        ir_node  *nomem = get_irg_no_mem(irg);
        ir_node  *st    = new_bd_sparc_St_imm(dbgi, block, value0, sp, nomem,
@@ -1589,11 +1613,13 @@ static ir_node *bitcast_int_to_float(dbg_info *dbgi, ir_node *block,
        ir_mode  *mode;
        ir_node  *ldf;
        ir_node  *mem;
+       arch_add_irn_flags(st, arch_irn_flags_spill);
        set_irn_pinned(st, op_pin_state_floats);
 
        if (value1 != NULL) {
                ir_node *st1 = new_bd_sparc_St_imm(dbgi, block, value1, sp, nomem,
                                                   mode_gp, NULL, 4, true);
+               arch_add_irn_flags(st1, arch_irn_flags_spill);
                ir_node *in[2] = { st, st1 };
                ir_node *sync  = new_r_Sync(block, 2, in);
                set_irn_pinned(st1, op_pin_state_floats);
@@ -1611,33 +1637,57 @@ static ir_node *bitcast_int_to_float(dbg_info *dbgi, ir_node *block,
 }
 
 static void bitcast_float_to_int(dbg_info *dbgi, ir_node *block,
-                                 ir_node *node, ir_mode *float_mode,
+                                 ir_node *value, ir_mode *float_mode,
                                  ir_node **result)
 {
-       ir_graph *irg   = current_ir_graph;
-       ir_node  *stack = get_irg_frame(irg);
-       ir_node  *nomem = get_irg_no_mem(irg);
-       ir_node  *stf   = create_stf(dbgi, block, node, stack, nomem, float_mode,
-                                    NULL, 0, true);
-       int       bits  = get_mode_size_bits(float_mode);
-       ir_node  *ld;
-       set_irn_pinned(stf, op_pin_state_floats);
-
-       ld = new_bd_sparc_Ld_imm(dbgi, block, stack, stf, mode_gp, NULL, 0, true);
-       set_irn_pinned(ld, op_pin_state_floats);
-       result[0] = new_r_Proj(ld, mode_gp, pn_sparc_Ld_res);
-
-       if (bits == 64) {
-               ir_node *ld2 = new_bd_sparc_Ld_imm(dbgi, block, stack, stf, mode_gp,
-                                                  NULL, 4, true);
+       int bits = get_mode_size_bits(float_mode);
+       if (is_Const(value)) {
+               ir_tarval *tv = get_Const_tarval(value);
+               int32_t val = get_tarval_sub_bits(tv, 0)         |
+                             (get_tarval_sub_bits(tv, 1) << 8)  |
+                             (get_tarval_sub_bits(tv, 2) << 16) |
+                             (get_tarval_sub_bits(tv, 3) << 24);
+               ir_node *valc = create_int_const(block, val);
+               if (bits == 64) {
+                       int32_t val2 = get_tarval_sub_bits(tv, 4)         |
+                                                 (get_tarval_sub_bits(tv, 5) << 8)  |
+                                                 (get_tarval_sub_bits(tv, 6) << 16) |
+                                                 (get_tarval_sub_bits(tv, 7) << 24);
+                       ir_node *valc2 = create_int_const(block, val2);
+                       result[0] = valc2;
+                       result[1] = valc;
+               } else {
+                       assert(bits == 32);
+                       result[0] = valc;
+                       result[1] = NULL;
+               }
+       } else {
+               ir_graph *irg   = get_Block_irg(block);
+               ir_node  *stack = get_irg_frame(irg);
+               ir_node  *nomem = get_irg_no_mem(irg);
+               ir_node  *new_value = be_transform_node(value);
+               ir_node  *stf   = create_stf(dbgi, block, new_value, stack, nomem,
+                                            float_mode, NULL, 0, true);
+               ir_node  *ld;
+               arch_add_irn_flags(stf, arch_irn_flags_spill);
+               set_irn_pinned(stf, op_pin_state_floats);
+
+               ld = new_bd_sparc_Ld_imm(dbgi, block, stack, stf, mode_gp, NULL, 0, true);
                set_irn_pinned(ld, op_pin_state_floats);
-               result[1] = new_r_Proj(ld2, mode_gp, pn_sparc_Ld_res);
+               result[0] = new_r_Proj(ld, mode_gp, pn_sparc_Ld_res);
 
-               arch_add_irn_flags(ld, (arch_irn_flags_t)sparc_arch_irn_flag_needs_64bit_spillslot);
-               arch_add_irn_flags(ld2, (arch_irn_flags_t)sparc_arch_irn_flag_needs_64bit_spillslot);
-       } else {
-               assert(bits == 32);
-               result[1] = NULL;
+               if (bits == 64) {
+                       ir_node *ld2 = new_bd_sparc_Ld_imm(dbgi, block, stack, stf, mode_gp,
+                                                                                          NULL, 4, true);
+                       set_irn_pinned(ld, op_pin_state_floats);
+                       result[1] = new_r_Proj(ld2, mode_gp, pn_sparc_Ld_res);
+
+                       arch_add_irn_flags(ld, (arch_irn_flags_t)sparc_arch_irn_flag_needs_64bit_spillslot);
+                       arch_add_irn_flags(ld2, (arch_irn_flags_t)sparc_arch_irn_flag_needs_64bit_spillslot);
+               } else {
+                       assert(bits == 32);
+                       result[1] = NULL;
+               }
        }
 }
 
@@ -1671,7 +1721,7 @@ static ir_node *gen_Call(ir_node *node)
        ir_entity       *entity       = NULL;
        ir_node         *new_frame    = get_stack_pointer_for(node);
        bool             aggregate_return
-               = type->attr.ma.has_compound_ret_parameter;
+               = get_method_calling_convention(type) & cc_compound_ret;
        ir_node         *incsp;
        int              mem_pos;
        ir_node         *res;
@@ -1702,10 +1752,10 @@ static ir_node *gen_Call(ir_node *node)
        /* parameters */
        for (p = 0; p < n_params; ++p) {
                ir_node                  *value      = get_Call_param(node, p);
-               ir_node                  *new_value  = be_transform_node(value);
                const reg_or_stackslot_t *param      = &cconv->parameters[p];
                ir_type                  *param_type = get_method_param_type(type, p);
                ir_mode                  *mode       = get_type_mode(param_type);
+               ir_node                  *partial_value;
                ir_node                  *new_values[2];
                ir_node                  *str;
                int                       offset;
@@ -1713,8 +1763,9 @@ static ir_node *gen_Call(ir_node *node)
                if (mode_is_float(mode) && param->reg0 != NULL) {
                        unsigned size_bits = get_mode_size_bits(mode);
                        assert(size_bits <= 64);
-                       bitcast_float_to_int(dbgi, new_block, new_value, mode, new_values);
+                       bitcast_float_to_int(dbgi, new_block, value, mode, new_values);
                } else {
+                       ir_node *new_value = be_transform_node(value);
                        new_values[0] = new_value;
                        new_values[1] = NULL;
                }
@@ -1737,8 +1788,10 @@ static ir_node *gen_Call(ir_node *node)
 
                /* we need a store if we're here */
                if (new_values[1] != NULL) {
-                       new_value = new_values[1];
-                       mode      = mode_gp;
+                       partial_value = new_values[1];
+                       mode          = mode_gp;
+               } else {
+                       partial_value = new_values[0];
                }
 
                /* we need to skip over our save area when constructing the call
@@ -1746,10 +1799,10 @@ static ir_node *gen_Call(ir_node *node)
                offset = param->offset + SPARC_MIN_STACKSIZE;
 
                if (mode_is_float(mode)) {
-                       str = create_stf(dbgi, new_block, new_value, incsp, new_mem,
+                       str = create_stf(dbgi, new_block, partial_value, incsp, new_mem,
                                         mode, NULL, offset, true);
                } else {
-                       str = new_bd_sparc_St_imm(dbgi, new_block, new_value, incsp,
+                       str = new_bd_sparc_St_imm(dbgi, new_block, partial_value, incsp,
                                                  new_mem, mode, NULL, offset, true);
                }
                set_irn_pinned(str, op_pin_state_floats);
@@ -1803,12 +1856,16 @@ static ir_node *gen_Call(ir_node *node)
                }
                assert(result_info->req1 == NULL);
        }
+       const unsigned *allocatable_regs = be_birg_from_irg(irg)->allocatable_regs;
        for (i = 0; i < N_SPARC_REGISTERS; ++i) {
                const arch_register_t *reg;
                if (!rbitset_is_set(cconv->caller_saves, i))
                        continue;
                reg = &sparc_registers[i];
-               arch_set_irn_register_req_out(res, o++, reg->single_req);
+               arch_set_irn_register_req_out(res, o, reg->single_req);
+               if (!rbitset_is_set(allocatable_regs, reg->global_index))
+                       arch_set_irn_register_out(res, o, reg);
+               ++o;
        }
        assert(o == out_arity);
 
@@ -1845,6 +1902,102 @@ static ir_node *gen_Sel(ir_node *node)
        return new_bd_sparc_FrameAddr(dbgi, new_block, new_ptr, entity, 0);
 }
 
+static ir_node *gen_Alloc(ir_node *node)
+{
+       dbg_info *dbgi       = get_irn_dbg_info(node);
+       ir_node  *block      = get_nodes_block(node);
+       ir_node  *new_block  = be_transform_node(block);
+       ir_type  *type       = get_Alloc_type(node);
+       ir_node  *size       = get_Alloc_count(node);
+       ir_node  *stack_pred = get_stack_pointer_for(node);
+       ir_node  *mem        = get_Alloc_mem(node);
+       ir_node  *new_mem    = be_transform_node(mem);
+       ir_node  *subsp;
+
+       if (get_Alloc_where(node) != stack_alloc)
+               panic("only stack-alloc supported in sparc backend (at %+F)", node);
+       /* lowerer should have transformed all allocas to byte size */
+       if (!is_unknown_type(type) && get_type_size_bytes(type) != 1)
+               panic("Found non-byte alloc in sparc backend (at %+F)", node);
+
+       if (is_Const(size)) {
+               ir_tarval *tv    = get_Const_tarval(size);
+               long       sizel = get_tarval_long(tv);
+
+               assert((sizel & (SPARC_STACK_ALIGNMENT - 1)) == 0 && "Found Alloc with misaligned constant");
+               subsp = new_bd_sparc_SubSP_imm(dbgi, new_block, stack_pred, new_mem, NULL, sizel);
+       } else {
+               ir_node *new_size = be_transform_node(size);
+               subsp = new_bd_sparc_SubSP_reg(dbgi, new_block, stack_pred, new_size, new_mem);
+       }
+
+       ir_node *stack_proj = new_r_Proj(subsp, mode_gp, pn_sparc_SubSP_stack);
+       arch_set_irn_register(stack_proj, sp_reg);
+       /* If we are the last stack producer in a block, we have to keep the
+        * stack value.  This keeps all producers, which is more than necessary. */
+       keep_alive(stack_proj);
+
+       pmap_insert(node_to_stack, node, stack_proj);
+
+       return subsp;
+}
+
+static ir_node *gen_Proj_Alloc(ir_node *node)
+{
+       ir_node *alloc     = get_Proj_pred(node);
+       ir_node *new_alloc = be_transform_node(alloc);
+       long     pn        = get_Proj_proj(node);
+
+       switch ((pn_Alloc)pn) {
+       case pn_Alloc_M:   return new_r_Proj(new_alloc, mode_M,  pn_sparc_SubSP_M);
+       case pn_Alloc_res: return new_r_Proj(new_alloc, mode_gp, pn_sparc_SubSP_addr);
+
+       case pn_Alloc_X_regular:
+       case pn_Alloc_X_except:
+               panic("exception output of alloc not supported (at %+F)",
+                     node);
+       }
+       panic("invalid Proj->Alloc");
+}
+
+static ir_node *gen_Free(ir_node *node)
+{
+       dbg_info *dbgi       = get_irn_dbg_info(node);
+       ir_node  *block      = get_nodes_block(node);
+       ir_node  *new_block  = be_transform_node(block);
+       ir_type  *type       = get_Free_type(node);
+       ir_node  *size       = get_Free_count(node);
+       ir_node  *mem        = get_Free_mem(node);
+       ir_node  *new_mem    = be_transform_node(mem);
+       ir_node  *stack_pred = get_stack_pointer_for(node);
+       ir_node  *addsp;
+       if (get_Alloc_where(node) != stack_alloc)
+               panic("only stack-alloc supported in sparc backend (at %+F)", node);
+       /* lowerer should have transformed all allocas to byte size */
+       if (!is_unknown_type(type) && get_type_size_bytes(type) != 1)
+               panic("Found non-byte alloc in sparc backend (at %+F)", node);
+
+       if (is_Const(size)) {
+               ir_tarval *tv    = get_Const_tarval(size);
+               long       sizel = get_tarval_long(tv);
+               addsp = be_new_IncSP(sp_reg, new_block, stack_pred, -sizel, 0);
+               set_irn_dbg_info(addsp, dbgi);
+       } else {
+               ir_node *new_size = be_transform_node(size);
+               addsp = new_bd_sparc_AddSP(dbgi, new_block, stack_pred, new_size);
+               arch_set_irn_register(addsp, sp_reg);
+       }
+
+       /* if we are the last IncSP producer in a block then we have to keep
+        * the stack value.
+        * Note: This here keeps all producers which is more than necessary */
+       keep_alive(addsp);
+
+       pmap_insert(node_to_stack, node, addsp);
+       /* the "result" is the unmodified sp value */
+       return new_mem;
+}
+
 static const arch_register_req_t float1_req = {
        arch_register_req_type_normal,
        &sparc_reg_classes[CLASS_sparc_fp],
@@ -1873,31 +2026,19 @@ static const arch_register_req_t float4_req = {
 
 static const arch_register_req_t *get_float_req(ir_mode *mode)
 {
-       unsigned bits = get_mode_size_bits(mode);
-
        assert(mode_is_float(mode));
-       if (bits == 32) {
-               return &float1_req;
-       } else if (bits == 64) {
-               return &float2_req;
-       } else {
-               assert(bits == 128);
-               return &float4_req;
+       switch (get_mode_size_bits(mode)) {
+               case  32: return &float1_req;
+               case  64: return &float2_req;
+               case 128: return &float4_req;
+               default:  panic("invalid float mode");
        }
 }
 
-/**
- * Transform some Phi nodes
- */
 static ir_node *gen_Phi(ir_node *node)
 {
+       ir_mode                   *mode = get_irn_mode(node);
        const arch_register_req_t *req;
-       ir_node  *block = be_transform_node(get_nodes_block(node));
-       ir_graph *irg   = current_ir_graph;
-       dbg_info *dbgi  = get_irn_dbg_info(node);
-       ir_mode  *mode  = get_irn_mode(node);
-       ir_node  *phi;
-
        if (mode_needs_gp_reg(mode)) {
                /* we shouldn't have any 64bit stuff around anymore */
                assert(get_mode_size_bits(mode) <= 32);
@@ -1905,20 +2046,12 @@ static ir_node *gen_Phi(ir_node *node)
                mode = mode_gp;
                req  = sparc_reg_classes[CLASS_sparc_gp].class_req;
        } else if (mode_is_float(mode)) {
-               mode = mode;
                req  = get_float_req(mode);
        } else {
                req = arch_no_register_req;
        }
 
-       /* phi nodes allow loops, so we use the old arguments for now
-        * and fix this later */
-       phi = new_ir_node(dbgi, irg, block, op_Phi, mode, get_irn_arity(node), get_irn_in(node) + 1);
-       copy_node_attr(irg, node, phi);
-       be_duplicate_deps(node, phi);
-       arch_set_irn_register_req_out(phi, 0, req);
-       be_enqueue_preds(node);
-       return phi;
+       return be_transform_phi(node, req);
 }
 
 /**
@@ -1981,15 +2114,6 @@ static ir_node *gen_Proj_Store(ir_node *node)
        panic("Unsupported Proj from Store");
 }
 
-/**
- * Transform the Projs from a Cmp.
- */
-static ir_node *gen_Proj_Cmp(ir_node *node)
-{
-       (void) node;
-       panic("not implemented");
-}
-
 /**
  * transform Projs from a Div
  */
@@ -2005,7 +2129,7 @@ static ir_node *gen_Proj_Div(ir_node *node)
        } else if (is_sparc_fdiv(new_pred)) {
                res_mode = get_Div_resmode(pred);
        } else {
-               panic("sparc backend: Div transformed to something unexpected: %+F",
+               panic("Div transformed to something unexpected: %+F",
                      new_pred);
        }
        assert((int)pn_sparc_SDiv_res == (int)pn_sparc_UDiv_res);
@@ -2016,7 +2140,7 @@ static ir_node *gen_Proj_Div(ir_node *node)
        case pn_Div_res:
                return new_r_Proj(new_pred, res_mode, pn_sparc_SDiv_res);
        case pn_Div_M:
-               return new_r_Proj(new_pred, mode_gp, pn_sparc_SDiv_M);
+               return new_r_Proj(new_pred, mode_M, pn_sparc_SDiv_M);
        default:
                break;
        }
@@ -2061,16 +2185,13 @@ static ir_node *gen_Proj_Start(ir_node *node)
 
 static ir_node *gen_Proj_Proj_Start(ir_node *node)
 {
-       long       pn          = get_Proj_proj(node);
-       ir_node   *block       = get_nodes_block(node);
-       ir_graph  *irg         = get_irn_irg(node);
-       ir_node   *new_block   = be_transform_node(block);
-       ir_entity *entity      = get_irg_entity(irg);
-       ir_type   *method_type = get_entity_type(entity);
-       ir_type   *param_type  = get_method_param_type(method_type, pn);
-       ir_node   *args        = get_Proj_pred(node);
-       ir_node   *start       = get_Proj_pred(args);
-       ir_node   *new_start   = be_transform_node(start);
+       long      pn        = get_Proj_proj(node);
+       ir_node  *block     = get_nodes_block(node);
+       ir_graph *irg       = get_irn_irg(node);
+       ir_node  *new_block = be_transform_node(block);
+       ir_node  *args      = get_Proj_pred(node);
+       ir_node  *start     = get_Proj_pred(args);
+       ir_node  *new_start = be_transform_node(start);
        const reg_or_stackslot_t *param;
 
        /* Proj->Proj->Start must be a method argument */
@@ -2080,22 +2201,32 @@ static ir_node *gen_Proj_Proj_Start(ir_node *node)
 
        if (param->reg0 != NULL) {
                /* argument transmitted in register */
-               ir_mode               *mode     = get_type_mode(param_type);
                const arch_register_t *reg      = param->reg0;
                ir_mode               *reg_mode = reg->reg_class->mode;
-               long                   pn       = param->reg_offset + start_params_offset;
-               ir_node               *value    = new_r_Proj(new_start, reg_mode, pn);
+               long                   new_pn   = param->reg_offset + start_params_offset;
+               ir_node               *value    = new_r_Proj(new_start, reg_mode, new_pn);
+               bool                   is_float = false;
+
+               {
+                       ir_entity *entity      = get_irg_entity(irg);
+                       ir_type   *method_type = get_entity_type(entity);
+                       if (pn < (long)get_method_n_params(method_type)) {
+                               ir_type *param_type = get_method_param_type(method_type, pn);
+                               ir_mode *mode       = get_type_mode(param_type);
+                               is_float = mode_is_float(mode);
+                       }
+               }
 
-               if (mode_is_float(mode)) {
+               if (is_float) {
                        const arch_register_t *reg1 = param->reg1;
                        ir_node *value1 = NULL;
 
                        if (reg1 != NULL) {
                                ir_mode *reg1_mode = reg1->reg_class->mode;
-                               value1 = new_r_Proj(new_start, reg1_mode, pn+1);
+                               value1 = new_r_Proj(new_start, reg1_mode, new_pn+1);
                        } else if (param->entity != NULL) {
-                               ir_node *fp      = get_initial_fp(irg);
-                               ir_node *mem     = get_initial_mem(irg);
+                               ir_node *fp  = get_initial_fp(irg);
+                               ir_node *mem = get_initial_mem(irg);
                                ir_node *ld  = new_bd_sparc_Ld_imm(NULL, new_block, fp, mem,
                                                                   mode_gp, param->entity,
                                                                   0, true);
@@ -2108,11 +2239,11 @@ static ir_node *gen_Proj_Proj_Start(ir_node *node)
                return value;
        } else {
                /* argument transmitted on stack */
-               ir_node  *mem     = get_initial_mem(irg);
-               ir_mode  *mode    = get_type_mode(param->type);
-               ir_node  *base    = get_frame_base(irg);
-               ir_node  *load;
-               ir_node  *value;
+               ir_node *mem  = get_initial_mem(irg);
+               ir_mode *mode = get_type_mode(param->type);
+               ir_node *base = get_frame_base(irg);
+               ir_node *load;
+               ir_node *value;
 
                if (mode_is_float(mode)) {
                        load  = create_ldf(NULL, new_block, base, mem, mode,
@@ -2175,14 +2306,15 @@ static ir_node *gen_Proj(ir_node *node)
        ir_node *pred = get_Proj_pred(node);
 
        switch (get_irn_opcode(pred)) {
+       case iro_Alloc:
+               return gen_Proj_Alloc(node);
        case iro_Store:
                return gen_Proj_Store(node);
        case iro_Load:
                return gen_Proj_Load(node);
        case iro_Call:
                return gen_Proj_Call(node);
-       case iro_Cmp:
-               return gen_Proj_Cmp(node);
+       case iro_Switch:
        case iro_Cond:
                return be_duplicate_node(node);
        case iro_Div:
@@ -2228,6 +2360,7 @@ static void sparc_register_transformers(void)
        be_start_transform_setup();
 
        be_set_transform_function(op_Add,          gen_Add);
+       be_set_transform_function(op_Alloc,        gen_Alloc);
        be_set_transform_function(op_And,          gen_And);
        be_set_transform_function(op_Call,         gen_Call);
        be_set_transform_function(op_Cmp,          gen_Cmp);
@@ -2236,6 +2369,7 @@ static void sparc_register_transformers(void)
        be_set_transform_function(op_Conv,         gen_Conv);
        be_set_transform_function(op_Div,          gen_Div);
        be_set_transform_function(op_Eor,          gen_Eor);
+       be_set_transform_function(op_Free,         gen_Free);
        be_set_transform_function(op_Jmp,          gen_Jmp);
        be_set_transform_function(op_Load,         gen_Load);
        be_set_transform_function(op_Minus,        gen_Minus);
@@ -2253,6 +2387,7 @@ static void sparc_register_transformers(void)
        be_set_transform_function(op_Start,        gen_Start);
        be_set_transform_function(op_Store,        gen_Store);
        be_set_transform_function(op_Sub,          gen_Sub);
+       be_set_transform_function(op_Switch,       gen_Switch);
        be_set_transform_function(op_SymConst,     gen_SymConst);
        be_set_transform_function(op_Unknown,      gen_Unknown);
 
@@ -2275,21 +2410,23 @@ void sparc_transform_graph(ir_graph *irg)
 
        node_to_stack = pmap_create();
 
-       mode_gp    = mode_Iu;
-       mode_fp    = mode_F;
+       mode_gp    = sparc_reg_classes[CLASS_sparc_gp].mode;
+       mode_fp    = sparc_reg_classes[CLASS_sparc_fp].mode;
        mode_fp2   = mode_D;
-       mode_flags = mode_Bu;
        //mode_fp4 = ?
+       mode_flags = sparc_reg_classes[CLASS_sparc_flags_class].mode;
+       assert(sparc_reg_classes[CLASS_sparc_fpflags_class].mode == mode_flags);
 
-       start_mem  = NULL;
-       start_g0   = NULL;
-       start_sp   = NULL;
-       start_fp   = NULL;
        frame_base = NULL;
 
        stackorder = be_collect_stacknodes(irg);
        current_cconv
                = sparc_decide_calling_convention(get_entity_type(entity), irg);
+       if (sparc_variadic_fixups(irg, current_cconv)) {
+               sparc_free_calling_convention(current_cconv);
+               current_cconv
+                       = sparc_decide_calling_convention(get_entity_type(entity), irg);
+       }
        sparc_create_stacklayout(irg, current_cconv);
        be_add_parameter_entity_stores(irg);
 
@@ -2309,6 +2446,8 @@ void sparc_transform_graph(ir_graph *irg)
 
        /* do code placement, to optimize the position of constants */
        place_code(irg);
+       /* backend expects outedges to be always on */
+       assure_edges(irg);
 }
 
 void sparc_init_transform(void)