nv50: import new compiler

1 files changed, 433 insertions, 0 deletions

diff --git a/src/gallium/drivers/nv50/nv50_pc.c b/src/gallium/drivers/nv50/nv50_pc.c
new file mode 100644
index 00000000000..8aba0a32b7e
--- /dev/null
+++ b/src/gallium/drivers/nv50/nv50_pc.c
@@ -0,0 +1,433 @@
+
+#include "nv50_pc.h"
+#include "nv50_program.h"
+
+#include <stdio.h>
+
+/* returns TRUE if operands 0 and 1 can be swapped */
+boolean
+nv_op_commutative(uint opcode)
+{
+   switch (opcode) {
+   case NV_OP_ADD:
+   case NV_OP_MUL:
+   case NV_OP_MAD:
+   case NV_OP_AND:
+   case NV_OP_OR:
+   case NV_OP_XOR:
+   case NV_OP_MIN:
+   case NV_OP_MAX:
+   case NV_OP_SAD:
+     return TRUE;
+   default:
+     return FALSE;
+   }
+}
+
+/* return operand to which the address register applies */
+int
+nv50_indirect_opnd(struct nv_instruction *i)
+{
+   if (!i->src[4])
+      return -1;
+
+   switch (i->opcode) {
+   case NV_OP_MOV:
+   case NV_OP_LDA:
+      return 0;
+   default:
+      return 1;
+   }
+}
+
+boolean
+nv50_nvi_can_use_imm(struct nv_instruction *nvi, int s)
+{
+   if (nvi->flags_src || nvi->flags_def)
+      return FALSE;
+
+   switch (nvi->opcode) {
+   case NV_OP_ADD:
+   case NV_OP_MUL:
+   case NV_OP_AND:
+   case NV_OP_OR:
+   case NV_OP_XOR:
+   case NV_OP_SHL:
+   case NV_OP_SHR:
+      return (s == 1) && (nvi->def[0]->reg.file == NV_FILE_GPR);
+   case NV_OP_MOV:
+      assert(s == 0);
+      return (nvi->def[0]->reg.file == NV_FILE_GPR);
+   default:
+      return FALSE;
+   }
+}
+
+boolean
+nv50_nvi_can_load(struct nv_instruction *nvi, int s, struct nv_value *value)
+{
+   switch (nvi->opcode) {
+   case NV_OP_ABS:
+   case NV_OP_ADD:
+   case NV_OP_CEIL:
+   case NV_OP_FLOOR:
+   case NV_OP_TRUNC:
+   case NV_OP_CVT:
+   case NV_OP_MAD:
+   case NV_OP_MUL:
+   case NV_OP_SAT:
+   case NV_OP_SUB:
+   case NV_OP_MAX:
+   case NV_OP_MIN:
+      if (s == 0 && (value->reg.file == NV_FILE_MEM_S ||
+                     value->reg.file == NV_FILE_MEM_P))
+         return TRUE;
+      if (s == 1 &&
+          value->reg.file >= NV_FILE_MEM_C(0) &&
+          value->reg.file <= NV_FILE_MEM_C(15))
+         return TRUE;
+      if (s == 2 && nvi->src[1]->value->reg.file == NV_FILE_GPR)
+         return TRUE;
+      return FALSE;
+   case NV_OP_MOV:
+      assert(s == 0);
+      return TRUE;
+   default:
+      return FALSE;
+   }
+}
+
+ubyte
+nv50_supported_src_mods(uint opcode, int s)
+{
+   switch (opcode) {
+   case NV_OP_ABS:
+      return NV_MOD_NEG | NV_MOD_ABS; /* obviously */
+   case NV_OP_ADD:
+   case NV_OP_MUL:
+   case NV_OP_MAD:
+      return NV_MOD_NEG;
+   case NV_OP_DFDX:
+   case NV_OP_DFDY:
+      assert(s == 0);
+      return NV_MOD_NEG;
+   case NV_OP_MAX:
+   case NV_OP_MIN:
+      return NV_MOD_ABS;
+   case NV_OP_CVT:
+   case NV_OP_LG2:
+   case NV_OP_NEG:
+   case NV_OP_PREEX2:
+   case NV_OP_PRESIN:
+   case NV_OP_RCP:
+   case NV_OP_RSQ:
+      return NV_MOD_ABS | NV_MOD_NEG;
+   default:
+      return 0;
+   }
+}
+
+int
+nv_nvi_refcount(struct nv_instruction *nvi)
+{
+   int i, rc;
+
+   rc = nvi->flags_def ? nvi->flags_def->refc : 0;
+
+   for (i = 0; i < 4; ++i) {
+      if (!nvi->def[i])
+         return rc;
+      rc += nvi->def[i]->refc;
+   }
+   return rc;
+}
+
+static void
+nv_pc_free_refs(struct nv_pc *pc)
+{
+   int i;
+   for (i = 0; i < pc->num_refs; i += 64)
+      FREE(pc->refs[i]);
+}
+
+void
+nv_print_program(struct nv_basic_block *b)
+{
+   struct nv_instruction *i = b->phi;
+
+   b->priv = 0;
+
+   debug_printf("=== BB %i ", b->id);
+   if (b->out[0])
+      debug_printf("(--0> %i) ", b->out[0]->id);
+   if (b->out[1])
+      debug_printf("(--1> %i) ", b->out[1]->id);
+   debug_printf("===\n");
+
+   if (!i)
+      i = b->entry;
+   for (; i; i = i->next)
+      nv_print_instruction(i);
+
+   if (!b->out[0]) {
+      debug_printf("END\n\n");
+      return;
+   }
+   if (!b->out[1] && ++(b->out[0]->priv) != b->out[0]->num_in)
+      return;
+
+   if (b->out[0] != b)
+      nv_print_program(b->out[0]);
+
+   if (b->out[1] && b->out[1] != b)
+      nv_print_program(b->out[1]);
+}
+
+static INLINE void
+nvcg_show_bincode(struct nv_pc *pc)
+{
+   int i;
+
+   for (i = 0; i < pc->bin_size / 4; ++i)
+      debug_printf("0x%08x ", pc->emit[i]);
+   debug_printf("\n");
+}
+
+static int
+nv50_emit_program(struct nv_pc *pc)
+{
+   uint32_t *code = pc->emit;
+   int n;
+
+   debug_printf("emitting program: size = %u\n", pc->bin_size);
+
+   for (n = 0; n < pc->num_blocks; ++n) {
+      struct nv_instruction *i;
+      struct nv_basic_block *b = pc->bb_list[n];
+
+      for (i = b->entry; i; i = i->next) {
+         nv50_emit_instruction(pc, i);
+
+         pc->bin_pos += 1 + (pc->emit[0] & 1);
+         pc->emit += 1 + (pc->emit[0] & 1);
+      }
+   }
+   assert(pc->emit == &code[pc->bin_size / 4]);
+
+   /* XXX: we can do better than this ... */
+   if ((pc->emit[-1] & 3) == 3) {
+      pc->emit[0] = 0xf0000001;
+      pc->emit[1] = 0xe0000000;
+      pc->bin_size += 8;
+   }
+
+   pc->emit = code;
+   code[pc->bin_size / 4 - 1] |= 1;
+
+   nvcg_show_bincode(pc);
+
+   return 0;
+}
+
+int
+nv50_generate_code(struct nv50_translation_info *ti)
+{
+   struct nv_pc *pc;
+   int ret;
+
+   pc = CALLOC_STRUCT(nv_pc);
+   if (!pc)
+      return 1;
+
+   ret = nv50_tgsi_to_nc(pc, ti);
+   if (ret)
+      goto out;
+
+   /* optimization */
+   ret = nv_pc_exec_pass0(pc);
+   if (ret)
+      goto out;
+
+   /* register allocation */
+   ret = nv_pc_exec_pass1(pc);
+   if (ret)
+      goto out;
+
+   /* prepare for emission */
+   ret = nv_pc_exec_pass2(pc);
+   if (ret)
+      goto out;
+
+   pc->emit = CALLOC(pc->bin_size / 4 + 2, 4);
+   if (!pc->emit) {
+      ret = 3;
+      goto out;
+   }
+   ret = nv50_emit_program(pc);
+   if (ret)
+      goto out;
+
+   ti->p->code_size = pc->bin_size;
+   ti->p->code = pc->emit;
+
+   ti->p->immd_size = pc->immd_count * 4;
+   ti->p->immd = pc->immd_buf;
+
+   ti->p->max_gpr = (pc->max_reg[NV_FILE_GPR] + 1) >> 1;
+   ti->p->max_gpr++;
+
+   ti->p->fixups = pc->fixups;
+   ti->p->num_fixups = pc->num_fixups;
+
+   debug_printf("SHADER TRANSLATION - %s\n", ret ? "failure" : "success");
+
+out:
+   nv_pc_free_refs(pc);
+   if (ret) {
+      if (pc->emit)
+         free(pc->emit);
+      if (pc->immd_buf)
+         free(pc->immd_buf);
+      if (pc->fixups)
+         free(pc->fixups);
+   }
+   free(pc);
+
+   return ret;
+}
+
+static void
+nvbb_insert_phi(struct nv_basic_block *b, struct nv_instruction *i)
+{
+   if (!b->phi) {
+      i->prev = NULL;
+      b->phi = i;
+      i->next = b->entry;
+      if (b->entry) {
+         assert(!b->entry->prev && b->exit);
+         b->entry->prev = i;
+      } else {
+         b->entry = i;
+	 b->exit = i;
+      }
+   } else {
+      assert(b->entry);
+      if (b->entry->opcode == NV_OP_PHI) { /* insert after entry */
+	 assert(b->entry == b->exit);
+         b->entry->next = i;
+         i->prev = b->entry;
+         b->entry = i;
+	 b->exit = i;
+      } else { /* insert before entry */
+         assert(b->entry->prev && b->exit);
+         i->next = b->entry;
+         i->prev = b->entry->prev;
+         b->entry->prev = i;
+         i->prev->next = i;
+      }
+   }
+}
+
+void
+nvbb_insert_tail(struct nv_basic_block *b, struct nv_instruction *i)
+{
+   if (i->opcode == NV_OP_PHI) {
+      nvbb_insert_phi(b, i);
+   } else {
+      i->prev = b->exit;
+      if (b->exit)
+         b->exit->next = i;
+      b->exit = i;
+      if (!b->entry)
+         b->entry = i;
+      else
+      if (i->prev && i->prev->opcode == NV_OP_PHI)
+         b->entry = i;
+   }
+
+   i->bb = b;
+   b->num_instructions++;
+}
+
+void
+nv_nvi_delete(struct nv_instruction *nvi)
+{
+   struct nv_basic_block *b = nvi->bb;
+   int j;
+
+   debug_printf("REM: "); nv_print_instruction(nvi);
+
+   for (j = 0; j < 4; ++j) {
+      if (!nvi->src[j])
+         break;
+      --(nvi->src[j]->value->refc);
+      nvi->src[j] = NULL;
+   }	       
+
+   if (nvi->next)
+      nvi->next->prev = nvi->prev;
+   else {
+      assert(nvi == b->exit);
+      b->exit = nvi->prev;
+   }
+
+   if (nvi->prev)
+      nvi->prev->next = nvi->next;
+
+   if (nvi == b->entry) {
+      assert(nvi->opcode != NV_OP_PHI || !nvi->next);
+
+      if (!nvi->next || (nvi->opcode == NV_OP_PHI))
+         b->entry = nvi->prev;
+      else
+         b->entry = nvi->next;
+   }
+
+   if (nvi == b->phi) {
+      assert(!nvi->prev);
+      if (nvi->opcode != NV_OP_PHI)
+         debug_printf("WARN: b->phi points to non-PHI instruction\n");
+
+      if (!nvi->next || nvi->next->opcode != NV_OP_PHI)
+         b->phi = NULL;
+      else
+         b->phi = nvi->next;
+   }
+}
+
+void
+nv_nvi_permute(struct nv_instruction *i1, struct nv_instruction *i2)
+{
+   struct nv_basic_block *b = i1->bb;
+
+   assert(i1->opcode != NV_OP_PHI &&
+          i2->opcode != NV_OP_PHI);
+   assert(i1->next == i2);
+
+   if (b->exit == i2)
+      b->exit = i1;
+
+   if (b->entry == i1)
+      b->entry = i2;
+
+   i2->prev = i1->prev;
+   i1->next = i2->next;
+   i2->next = i1;
+   i1->prev = i2;
+
+   if (i2->prev)
+      i2->prev->next = i2;
+   if (i1->next)
+      i1->next->prev = i1;
+}
+
+void nvbb_attach_block(struct nv_basic_block *parent, struct nv_basic_block *b)
+{
+   if (parent->out[0]) {
+      assert(!parent->out[1]);
+      parent->out[1] = b;
+   } else
+      parent->out[0] = b;
+
+   b->in[b->num_in++] = parent;
+}