gallium: Remove ppc asm backend

The vs part hasn't been wired up since tgsi_sse2 was disabled in:

    commit 4eb3225b38ce12cb34ab3d90804c9683bd7b4ed3
    Author: José Fonseca <jose.r.fonseca@gmail.com>
    Date:   Tue Nov 8 00:10:47 2011 +0000

	Remove tgsi_sse2.

And it would certainly not work correctly in its current state:

draw/draw_vs_ppc.c: In function ‘draw_create_vs_ppc’:
draw/draw_vs_ppc.c:190:24: warning: assignment from incompatible pointer
type [enabled by default]

As with the sse2 backend, this should be done in llvm anyway.

Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>

2 files changed, 0 insertions, 1410 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_ppc.c b/src/gallium/auxiliary/tgsi/tgsi_ppc.c
deleted file mode 100644
index ce728ec..0000000
--- a/src/gallium/auxiliary/tgsi/tgsi_ppc.c
+++ /dev/null
@@ -1,1359 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- * 
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- * 
- **************************************************************************/
-
-/**
- * TGSI to PowerPC code generation.
- */
-
-#include "pipe/p_config.h"
-
-#if defined(PIPE_ARCH_PPC)
-
-#include "util/u_debug.h"
-#include "pipe/p_shader_tokens.h"
-#include "util/u_math.h"
-#include "util/u_memory.h"
-#include "util/u_sse.h"
-#include "tgsi/tgsi_info.h"
-#include "tgsi/tgsi_parse.h"
-#include "tgsi/tgsi_util.h"
-#include "tgsi_dump.h"
-#include "tgsi_exec.h"
-#include "tgsi_ppc.h"
-#include "rtasm/rtasm_ppc.h"
-
-
-/**
- * Since it's pretty much impossible to form PPC vector immediates, load
- * them from memory here:
- */
-PIPE_ALIGN_VAR(16) const float 
-ppc_builtin_constants[] = {
-   1.0f, -128.0f, 128.0, 0.0
-};
-
-/**
- * How many TGSI temps should be implemented with real PPC vector registers
- * rather than memory.
- */
-#define MAX_PPC_TEMPS 3
-
-
-/**
- * Context/state used during code gen.
- */
-struct gen_context
-{
-   struct ppc_function *f;
-   int inputs_reg;    /**< GP register pointing to input params */
-   int outputs_reg;   /**< GP register pointing to output params */
-   int temps_reg;     /**< GP register pointing to temporary "registers" */
-   int immed_reg;     /**< GP register pointing to immediates buffer */
-   int const_reg;     /**< GP register pointing to constants buffer */
-   int builtins_reg;  /**< GP register pointint to built-in constants */
-
-   int offset_reg;    /**< used to reduce redundant li instructions */
-   int offset_value;
-
-   int one_vec;       /**< vector register with {1.0, 1.0, 1.0, 1.0} */
-   int bit31_vec;     /**< vector register with {1<<31, 1<<31, 1<<31, 1<<31} */
-
-   /**
-    * Map TGSI temps to PPC vector temps.
-    * We have 32 PPC vector regs.  Use 16 of them for storing 4 TGSI temps.
-    * XXX currently only do this for TGSI temps [0..MAX_PPC_TEMPS-1].
-    */
-   int temps_map[MAX_PPC_TEMPS][4];
-
-   /**
-    * Cache of src registers.
-    * This is used to avoid redundant load instructions.
-    */
-   struct {
-      struct tgsi_full_src_register src;
-      uint chan;
-      uint vec;
-   } regs[12];  /* 3 src regs, 4 channels */
-   uint num_regs;
-};
-
-
-/**
- * Initialize code generation context.
- */
-static void
-init_gen_context(struct gen_context *gen, struct ppc_function *func)
-{
-   uint i;
-
-   memset(gen, 0, sizeof(*gen));
-   gen->f = func;
-   gen->inputs_reg = ppc_reserve_register(func, 3);   /* first function param */
-   gen->outputs_reg = ppc_reserve_register(func, 4);  /* second function param */
-   gen->temps_reg = ppc_reserve_register(func, 5);    /* ... */
-   gen->immed_reg = ppc_reserve_register(func, 6);
-   gen->const_reg = ppc_reserve_register(func, 7);
-   gen->builtins_reg = ppc_reserve_register(func, 8);
-   gen->one_vec = -1;
-   gen->bit31_vec = -1;
-   gen->offset_reg = -1;
-   gen->offset_value = -9999999;
-   for (i = 0; i < MAX_PPC_TEMPS; i++) {
-      gen->temps_map[i][0] = ppc_allocate_vec_register(gen->f);
-      gen->temps_map[i][1] = ppc_allocate_vec_register(gen->f);
-      gen->temps_map[i][2] = ppc_allocate_vec_register(gen->f);
-      gen->temps_map[i][3] = ppc_allocate_vec_register(gen->f);
-   }
-}
-
-
-/**
- * Is the given TGSI register stored as a real PPC vector register?
- */
-static boolean
-is_ppc_vec_temporary(const struct tgsi_full_src_register *reg)
-{
-   return (reg->Register.File == TGSI_FILE_TEMPORARY &&
-           reg->Register.Index < MAX_PPC_TEMPS);
-}
-
-
-/**
- * Is the given TGSI register stored as a real PPC vector register?
- */
-static boolean
-is_ppc_vec_temporary_dst(const struct tgsi_full_dst_register *reg)
-{
-   return (reg->Register.File == TGSI_FILE_TEMPORARY &&
-           reg->Register.Index < MAX_PPC_TEMPS);
-}
-
-
-
-/**
- * All PPC vector load/store instructions form an effective address
- * by adding the contents of two registers.  For example:
- *    lvx v2,r8,r9   # v2 = memory[r8 + r9]
- *    stvx v2,r8,r9  # memory[r8 + r9] = v2;
- * So our lvx/stvx instructions are typically preceded by an 'li' instruction
- * to load r9 (above) with an immediate (an offset).
- * This code emits that 'li' instruction, but only if the offset value is
- * different than the previous 'li'.
- * This optimization seems to save about 10% in the instruction count.
- * Note that we need to unconditionally emit an 'li' inside basic blocks
- * (such as inside loops).
- */
-static int
-emit_li_offset(struct gen_context *gen, int offset)
-{
-   if (gen->offset_reg <= 0) {
-      /* allocate a GP register for storing load/store offset */
-      gen->offset_reg = ppc_allocate_register(gen->f);
-   }
-
-   /* emit new 'li' if offset is changing */
-   if (gen->offset_value < 0 || gen->offset_value != offset) {
-      gen->offset_value = offset;
-      ppc_li(gen->f, gen->offset_reg, offset);
-   }
-
-   return gen->offset_reg;
-}
-
-
-/**
- * Forces subsequent emit_li_offset() calls to emit an 'li'.
- * To be called at the top of basic blocks.
- */
-static void
-reset_li_offset(struct gen_context *gen)
-{
-   gen->offset_value = -9999999;
-}
-
-
-
-/**
- * Load the given vector register with {value, value, value, value}.
- * The value must be in the ppu_builtin_constants[] array.
- * We wouldn't need this if there was a simple way to load PPC vector
- * registers with immediate values!
- */
-static void
-load_constant_vec(struct gen_context *gen, int dst_vec, float value)
-{
-   uint pos;
-   for (pos = 0; pos < Elements(ppc_builtin_constants); pos++) {
-      if (ppc_builtin_constants[pos] == value) {
-         int offset = pos * 4;
-         int offset_reg = emit_li_offset(gen, offset);
-
-         /* Load 4-byte word into vector register.
-          * The vector slot depends on the effective address we load from.
-          * We know that our builtins start at a 16-byte boundary so we
-          * know that 'swizzle' tells us which vector slot will have the
-          * loaded word.  The other vector slots will be undefined.
-          */
-         ppc_lvewx(gen->f, dst_vec, gen->builtins_reg, offset_reg);
-         /* splat word[pos % 4] across the vector reg */
-         ppc_vspltw(gen->f, dst_vec, dst_vec, pos % 4);
-         return;
-      }
-   }
-   assert(0 && "Need to add new constant to ppc_builtin_constants array");
-}
-
-
-/**
- * Return index of vector register containing {1.0, 1.0, 1.0, 1.0}.
- */
-static int
-gen_one_vec(struct gen_context *gen)
-{
-   if (gen->one_vec < 0) {
-      gen->one_vec = ppc_allocate_vec_register(gen->f);
-      load_constant_vec(gen, gen->one_vec, 1.0f);
-   }
-   return gen->one_vec;
-}
-
-/**
- * Return index of vector register containing {1<<31, 1<<31, 1<<31, 1<<31}.
- */
-static int
-gen_get_bit31_vec(struct gen_context *gen)
-{
-   if (gen->bit31_vec < 0) {
-      gen->bit31_vec = ppc_allocate_vec_register(gen->f);
-      ppc_vspltisw(gen->f, gen->bit31_vec, -1);
-      ppc_vslw(gen->f, gen->bit31_vec, gen->bit31_vec, gen->bit31_vec);
-   }
-   return gen->bit31_vec;
-}
-
-
-/**
- * Register fetch.  Return PPC vector register with result.
- */
-static int
-emit_fetch(struct gen_context *gen,
-           const struct tgsi_full_src_register *reg,
-           const unsigned chan_index)
-{
-   uint swizzle = tgsi_util_get_full_src_register_swizzle(reg, chan_index);
-   int dst_vec = -1;
-
-   switch (swizzle) {
-   case TGSI_SWIZZLE_X:
-   case TGSI_SWIZZLE_Y:
-   case TGSI_SWIZZLE_Z:
-   case TGSI_SWIZZLE_W:
-      switch (reg->Register.File) {
-      case TGSI_FILE_INPUT:
-         {
-            int offset = (reg->Register.Index * 4 + swizzle) * 16;
-            int offset_reg = emit_li_offset(gen, offset);
-            dst_vec = ppc_allocate_vec_register(gen->f);
-            ppc_lvx(gen->f, dst_vec, gen->inputs_reg, offset_reg);
-         }
-         break;
-      case TGSI_FILE_SYSTEM_VALUE:
-         assert(!"unhandled system value in tgsi_ppc.c");
-         break;
-      case TGSI_FILE_TEMPORARY:
-         if (is_ppc_vec_temporary(reg)) {
-            /* use PPC vec register */
-            dst_vec = gen->temps_map[reg->Register.Index][swizzle];
-         }
-         else {
-            /* use memory-based temp register "file" */
-            int offset = (reg->Register.Index * 4 + swizzle) * 16;
-            int offset_reg = emit_li_offset(gen, offset);
-            dst_vec = ppc_allocate_vec_register(gen->f);
-            ppc_lvx(gen->f, dst_vec, gen->temps_reg, offset_reg);
-         }
-         break;
-      case TGSI_FILE_IMMEDIATE:
-         {
-            int offset = (reg->Register.Index * 4 + swizzle) * 4;
-            int offset_reg = emit_li_offset(gen, offset);
-            dst_vec = ppc_allocate_vec_register(gen->f);
-            /* Load 4-byte word into vector register.
-             * The vector slot depends on the effective address we load from.
-             * We know that our immediates start at a 16-byte boundary so we
-             * know that 'swizzle' tells us which vector slot will have the
-             * loaded word.  The other vector slots will be undefined.
-             */
-            ppc_lvewx(gen->f, dst_vec, gen->immed_reg, offset_reg);
-            /* splat word[swizzle] across the vector reg */
-            ppc_vspltw(gen->f, dst_vec, dst_vec, swizzle);
-         }
-         break;
-      case TGSI_FILE_CONSTANT:
-         {
-            int offset = (reg->Register.Index * 4 + swizzle) * 4;
-            int offset_reg = emit_li_offset(gen, offset);
-            dst_vec = ppc_allocate_vec_register(gen->f);
-            /* Load 4-byte word into vector register.
-             * The vector slot depends on the effective address we load from.
-             * We know that our constants start at a 16-byte boundary so we
-             * know that 'swizzle' tells us which vector slot will have the
-             * loaded word.  The other vector slots will be undefined.
-             */
-            ppc_lvewx(gen->f, dst_vec, gen->const_reg, offset_reg);
-            /* splat word[swizzle] across the vector reg */
-            ppc_vspltw(gen->f, dst_vec, dst_vec, swizzle);
-         }
-         break;
-      default:
-         assert( 0 );
-      }
-      break;
-   default:
-      assert( 0 );
-   }
-
-   assert(dst_vec >= 0);
-
-   {
-      uint sign_op = tgsi_util_get_full_src_register_sign_mode(reg, chan_index);
-      if (sign_op != TGSI_UTIL_SIGN_KEEP) {
-         int bit31_vec = gen_get_bit31_vec(gen);
-         int dst_vec2;
-
-         if (is_ppc_vec_temporary(reg)) {
-            /* need to use a new temp */
-            dst_vec2 = ppc_allocate_vec_register(gen->f);
-         }
-         else {
-            dst_vec2 = dst_vec;
-         }
-
-         switch (sign_op) {
-         case TGSI_UTIL_SIGN_CLEAR:
-            /* vec = vec & ~bit31 */
-            ppc_vandc(gen->f, dst_vec2, dst_vec, bit31_vec);
-            break;
-         case TGSI_UTIL_SIGN_SET:
-            /* vec = vec | bit31 */
-            ppc_vor(gen->f, dst_vec2, dst_vec, bit31_vec);
-            break;
-         case TGSI_UTIL_SIGN_TOGGLE:
-            /* vec = vec ^ bit31 */
-            ppc_vxor(gen->f, dst_vec2, dst_vec, bit31_vec);
-            break;
-         default:
-            assert(0);
-         }
-         return dst_vec2;
-      }
-   }
-
-   return dst_vec;
-}
-
-
-
-/**
- * Test if two TGSI src registers refer to the same memory location.
- * We use this to avoid redundant register loads.
- */
-static boolean
-equal_src_locs(const struct tgsi_full_src_register *a, uint chan_a,
-               const struct tgsi_full_src_register *b, uint chan_b)
-{
-   int swz_a, swz_b;
-   int sign_a, sign_b;
-   if (a->Register.File != b->Register.File)
-      return FALSE;
-   if (a->Register.Index != b->Register.Index)
-      return FALSE;
-   swz_a = tgsi_util_get_full_src_register_swizzle(a, chan_a);
-   swz_b = tgsi_util_get_full_src_register_swizzle(b, chan_b);
-   if (swz_a != swz_b)
-      return FALSE;
-   sign_a = tgsi_util_get_full_src_register_sign_mode(a, chan_a);
-   sign_b = tgsi_util_get_full_src_register_sign_mode(b, chan_b);
-   if (sign_a != sign_b)
-      return FALSE;
-   return TRUE;
-}
-
-
-/**
- * Given a TGSI src register and channel index, return the PPC vector
- * register containing the value.  We use a cache to prevent re-loading
- * the same register multiple times.
- * \return index of PPC vector register with the desired src operand
- */
-static int
-get_src_vec(struct gen_context *gen,
-            struct tgsi_full_instruction *inst, int src_reg, uint chan)
-{
-   const const struct tgsi_full_src_register *src = 
-      &inst->Src[src_reg];
-   int vec;
-   uint i;
-
-   /* check the cache */
-   for (i = 0; i < gen->num_regs; i++) {
-      if (equal_src_locs(&gen->regs[i].src, gen->regs[i].chan, src, chan)) {
-         /* cache hit */
-         assert(gen->regs[i].vec >= 0);
-         return gen->regs[i].vec;
-      }
-   }
-
-   /* cache miss: allocate new vec reg and emit fetch/load code */
-   vec = emit_fetch(gen, src, chan);
-   gen->regs[gen->num_regs].src = *src;
-   gen->regs[gen->num_regs].chan = chan;
-   gen->regs[gen->num_regs].vec = vec;
-   gen->num_regs++;
-
-   assert(gen->num_regs <= Elements(gen->regs));
-
-   assert(vec >= 0);
-
-   return vec;
-}
-
-
-/**
- * Clear the src operand cache.  To be called at the end of each emit function.
- */
-static void
-release_src_vecs(struct gen_context *gen)
-{
-   uint i;
-   for (i = 0; i < gen->num_regs; i++) {
-      const const struct tgsi_full_src_register src = gen->regs[i].src;
-      if (!is_ppc_vec_temporary(&src)) {
-         ppc_release_vec_register(gen->f, gen->regs[i].vec);
-      }
-   }
-   gen->num_regs = 0;
-}
-
-
-
-static int
-get_dst_vec(struct gen_context *gen, 
-            const struct tgsi_full_instruction *inst,
-            unsigned chan_index)
-{
-   const struct tgsi_full_dst_register *reg = &inst->Dst[0];
-
-   if (is_ppc_vec_temporary_dst(reg)) {
-      int vec = gen->temps_map[reg->Register.Index][chan_index];
-      return vec;
-   }
-   else {
-      return ppc_allocate_vec_register(gen->f);
-   }
-}
-
-
-/**
- * Register store.  Store 'src_vec' at location indicated by 'reg'.
- * \param free_vec  Should the src_vec be released when done?
- */
-static void
-emit_store(struct gen_context *gen,
-           int src_vec,
-           const struct tgsi_full_instruction *inst,
-           unsigned chan_index,
-           boolean free_vec)
-{
-   const struct tgsi_full_dst_register *reg = &inst->Dst[0];
-
-   switch (reg->Register.File) {
-   case TGSI_FILE_OUTPUT:
-      {
-         int offset = (reg->Register.Index * 4 + chan_index) * 16;
-         int offset_reg = emit_li_offset(gen, offset);
-         ppc_stvx(gen->f, src_vec, gen->outputs_reg, offset_reg);
-      }
-      break;
-   case TGSI_FILE_TEMPORARY:
-      if (is_ppc_vec_temporary_dst(reg)) {
-         if (!free_vec) {
-            int dst_vec = gen->temps_map[reg->Register.Index][chan_index];
-            if (dst_vec != src_vec)
-               ppc_vmove(gen->f, dst_vec, src_vec);
-         }
-         free_vec = FALSE;
-      }
-      else {
-         int offset = (reg->Register.Index * 4 + chan_index) * 16;
-         int offset_reg = emit_li_offset(gen, offset);
-         ppc_stvx(gen->f, src_vec, gen->temps_reg, offset_reg);
-      }
-      break;
-#if 0
-   case TGSI_FILE_ADDRESS:
-      emit_addrs(
-         func,
-         xmm,
-         reg->Register.Index,
-         chan_index );
-      break;
-#endif
-   default:
-      assert( 0 );
-   }
-
-#if 0
-   switch( inst->Instruction.Saturate ) {
-   case TGSI_SAT_NONE:
-      break;
-
-   case TGSI_SAT_ZERO_ONE:
-      /* assert( 0 ); */
-      break;
-
-   case TGSI_SAT_MINUS_PLUS_ONE:
-      assert( 0 );
-      break;
-   }
-#endif
-
-   if (free_vec)
-      ppc_release_vec_register(gen->f, src_vec);
-}
-
-
-static void
-emit_scalar_unaryop(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   int v0, v1;
-   uint chan_index;
-
-   v0 = get_src_vec(gen, inst, 0, TGSI_CHAN_X);
-   v1 = ppc_allocate_vec_register(gen->f);
-
-   switch (inst->Instruction.Opcode) {
-   case TGSI_OPCODE_RSQ:
-      /* v1 = 1.0 / sqrt(v0) */
-      ppc_vrsqrtefp(gen->f, v1, v0);
-      break;
-   case TGSI_OPCODE_RCP:
-      /* v1 = 1.0 / v0 */
-      ppc_vrefp(gen->f, v1, v0);
-      break;
-   default:
-      assert(0);
-   }
-
-   TGSI_FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
-      emit_store(gen, v1, inst, chan_index, FALSE);
-   }
-
-   release_src_vecs(gen);
-   ppc_release_vec_register(gen->f, v1);
-}
-
-
-static void
-emit_unaryop(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   uint chan_index;
-
-   TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst, chan_index) {
-      int v0 = get_src_vec(gen, inst, 0, chan_index);   /* v0 = srcreg[0] */
-      int v1 = get_dst_vec(gen, inst, chan_index);
-      switch (inst->Instruction.Opcode) {
-      case TGSI_OPCODE_ABS:
-         /* turn off the most significant bit of each vector float word */
-         {
-            int bit31_vec = gen_get_bit31_vec(gen);
-            ppc_vandc(gen->f, v1, v0, bit31_vec); /* v1 = v0 & ~bit31 */
-         }
-         break;
-      case TGSI_OPCODE_FLR:
-         ppc_vrfim(gen->f, v1, v0);         /* v1 = floor(v0) */
-         break;
-      case TGSI_OPCODE_FRC:
-         ppc_vrfim(gen->f, v1, v0);      /* tmp = floor(v0) */
-         ppc_vsubfp(gen->f, v1, v0, v1); /* v1 = v0 - v1 */
-         break;
-      case TGSI_OPCODE_EX2:
-         ppc_vexptefp(gen->f, v1, v0);     /* v1 = 2^v0 */
-         break;
-      case TGSI_OPCODE_LG2:
-         /* XXX this may be broken! */
-         ppc_vlogefp(gen->f, v1, v0);      /* v1 = log2(v0) */
-         break;
-      case TGSI_OPCODE_MOV:
-         if (v0 != v1)
-            ppc_vmove(gen->f, v1, v0);
-         break;
-      default:
-         assert(0);
-      }
-      emit_store(gen, v1, inst, chan_index, TRUE);  /* store v0 */
-   }
-
-   release_src_vecs(gen);
-}
-
-
-static void
-emit_binop(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   int zero_vec = -1;
-   uint chan;
-
-   if (inst->Instruction.Opcode == TGSI_OPCODE_MUL) {
-      zero_vec = ppc_allocate_vec_register(gen->f);
-      ppc_vzero(gen->f, zero_vec);
-   }
-
-   TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst, chan) {
-      /* fetch src operands */
-      int v0 = get_src_vec(gen, inst, 0, chan);
-      int v1 = get_src_vec(gen, inst, 1, chan);
-      int v2 = get_dst_vec(gen, inst, chan);
-
-      /* emit binop */
-      switch (inst->Instruction.Opcode) {
-      case TGSI_OPCODE_ADD:
-         ppc_vaddfp(gen->f, v2, v0, v1);
-         break;
-      case TGSI_OPCODE_SUB:
-         ppc_vsubfp(gen->f, v2, v0, v1);
-         break;
-      case TGSI_OPCODE_MUL:
-         ppc_vmaddfp(gen->f, v2, v0, v1, zero_vec);
-         break;
-      case TGSI_OPCODE_MIN:
-         ppc_vminfp(gen->f, v2, v0, v1);
-         break;
-      case TGSI_OPCODE_MAX:
-         ppc_vmaxfp(gen->f, v2, v0, v1);
-         break;
-      default:
-         assert(0);
-      }
-
-      /* store v2 */
-      emit_store(gen, v2, inst, chan, TRUE);
-   }
-
-   if (inst->Instruction.Opcode == TGSI_OPCODE_MUL)
-      ppc_release_vec_register(gen->f, zero_vec);
-
-   release_src_vecs(gen);
-}
-
-
-static void
-emit_triop(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   uint chan;
-
-   TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst, chan) {
-      /* fetch src operands */
-      int v0 = get_src_vec(gen, inst, 0, chan);
-      int v1 = get_src_vec(gen, inst, 1, chan);
-      int v2 = get_src_vec(gen, inst, 2, chan);
-      int v3 = get_dst_vec(gen, inst, chan);
-
-      /* emit ALU */
-      switch (inst->Instruction.Opcode) {
-      case TGSI_OPCODE_MAD:
-         ppc_vmaddfp(gen->f, v3, v0, v1, v2);   /* v3 = v0 * v1 + v2 */
-         break;
-      case TGSI_OPCODE_LRP:
-         ppc_vsubfp(gen->f, v3, v1, v2);        /* v3 = v1 - v2 */
-         ppc_vmaddfp(gen->f, v3, v0, v3, v2);   /* v3 = v0 * v3 + v2 */
-         break;
-      default:
-         assert(0);
-      }
-
-      /* store v3 */
-      emit_store(gen, v3, inst, chan, TRUE);
-   }
-
-   release_src_vecs(gen);
-}
-
-
-/**
- * Vector comparisons, resulting in 1.0 or 0.0 values.
- */
-static void
-emit_inequality(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   uint chan;
-   int one_vec = gen_one_vec(gen);
-
-   TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst, chan) {
-      /* fetch src operands */
-      int v0 = get_src_vec(gen, inst, 0, chan);
-      int v1 = get_src_vec(gen, inst, 1, chan);
-      int v2 = get_dst_vec(gen, inst, chan);
-      boolean complement = FALSE;
-
-      switch (inst->Instruction.Opcode) {
-      case TGSI_OPCODE_SNE:
-         complement = TRUE;
-         /* fall-through */
-      case TGSI_OPCODE_SEQ:
-         ppc_vcmpeqfpx(gen->f, v2, v0, v1); /* v2 = v0 == v1 ? ~0 : 0 */
-         break;
-
-      case TGSI_OPCODE_SGE:
-         complement = TRUE;
-         /* fall-through */
-      case TGSI_OPCODE_SLT:
-         ppc_vcmpgtfpx(gen->f, v2, v1, v0); /* v2 = v1 > v0 ? ~0 : 0 */
-         break;
-
-      case TGSI_OPCODE_SLE:
-         complement = TRUE;
-         /* fall-through */
-      case TGSI_OPCODE_SGT:
-         ppc_vcmpgtfpx(gen->f, v2, v0, v1); /* v2 = v0 > v1 ? ~0 : 0 */
-         break;
-      default:
-         assert(0);
-      }
-
-      /* v2 is now {0,0,0,0} or {~0,~0,~0,~0} */
-
-      if (complement)
-         ppc_vandc(gen->f, v2, one_vec, v2);    /* v2 = one_vec & ~v2 */
-      else
-         ppc_vand(gen->f, v2, one_vec, v2);     /* v2 = one_vec & v2 */
-
-      /* store v2 */
-      emit_store(gen, v2, inst, chan, TRUE);
-   }
-
-   release_src_vecs(gen);
-}
-
-
-static void
-emit_dotprod(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   int v0, v1, v2;
-   uint chan_index;
-
-   v2 = ppc_allocate_vec_register(gen->f);
-
-   ppc_vzero(gen->f, v2);                  /* v2 = {0, 0, 0, 0} */
-
-   v0 = get_src_vec(gen, inst, 0, TGSI_CHAN_X); /* v0 = src0.XXXX */
-   v1 = get_src_vec(gen, inst, 1, TGSI_CHAN_X); /* v1 = src1.XXXX */
-   ppc_vmaddfp(gen->f, v2, v0, v1, v2);    /* v2 = v0 * v1 + v2 */
-
-   v0 = get_src_vec(gen, inst, 0, TGSI_CHAN_Y); /* v0 = src0.YYYY */
-   v1 = get_src_vec(gen, inst, 1, TGSI_CHAN_Y); /* v1 = src1.YYYY */
-   ppc_vmaddfp(gen->f, v2, v0, v1, v2);    /* v2 = v0 * v1 + v2 */
-
-   v0 = get_src_vec(gen, inst, 0, TGSI_CHAN_Z); /* v0 = src0.ZZZZ */
-   v1 = get_src_vec(gen, inst, 1, TGSI_CHAN_Z); /* v1 = src1.ZZZZ */
-   ppc_vmaddfp(gen->f, v2, v0, v1, v2);    /* v2 = v0 * v1 + v2 */
-
-   if (inst->Instruction.Opcode == TGSI_OPCODE_DP4) {
-      v0 = get_src_vec(gen, inst, 0, TGSI_CHAN_W); /* v0 = src0.WWWW */
-      v1 = get_src_vec(gen, inst, 1, TGSI_CHAN_W); /* v1 = src1.WWWW */
-      ppc_vmaddfp(gen->f, v2, v0, v1, v2);    /* v2 = v0 * v1 + v2 */
-   }
-   else if (inst->Instruction.Opcode == TGSI_OPCODE_DPH) {
-      v1 = get_src_vec(gen, inst, 1, TGSI_CHAN_W); /* v1 = src1.WWWW */
-      ppc_vaddfp(gen->f, v2, v2, v1);         /* v2 = v2 + v1 */
-   }
-
-   TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst, chan_index) {
-      emit_store(gen, v2, inst, chan_index, FALSE);  /* store v2, free v2 later */
-   }
-
-   release_src_vecs(gen);
-
-   ppc_release_vec_register(gen->f, v2);
-}
-
-
-/** Approximation for vr = pow(va, vb) */
-static void
-ppc_vec_pow(struct ppc_function *f, int vr, int va, int vb)
-{
-   /* pow(a,b) ~= exp2(log2(a) * b) */
-   int t_vec = ppc_allocate_vec_register(f);
-   int zero_vec = ppc_allocate_vec_register(f);
-
-   ppc_vzero(f, zero_vec);
-
-   ppc_vlogefp(f, t_vec, va);                   /* t = log2(va) */
-   ppc_vmaddfp(f, t_vec, t_vec, vb, zero_vec);  /* t = t * vb + zero */
-   ppc_vexptefp(f, vr, t_vec);                  /* vr = 2^t */
-
-   ppc_release_vec_register(f, t_vec);
-   ppc_release_vec_register(f, zero_vec);
-}
-
-
-static void
-emit_lit(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   int one_vec = gen_one_vec(gen);
-
-   /* Compute X */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_X)) {
-      emit_store(gen, one_vec, inst, TGSI_CHAN_X, FALSE);
-   }
-
-   /* Compute Y, Z */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Y) ||
-      TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Z)) {
-      int x_vec;
-      int zero_vec = ppc_allocate_vec_register(gen->f);
-
-      x_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_X);  /* x_vec = src[0].x */
-
-      ppc_vzero(gen->f, zero_vec);                /* zero = {0,0,0,0} */
-      ppc_vmaxfp(gen->f, x_vec, x_vec, zero_vec); /* x_vec = max(x_vec, 0) */
-
-      if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Y)) {
-         emit_store(gen, x_vec, inst, TGSI_CHAN_Y, FALSE);
-      }
-
-      if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Z)) {
-         int y_vec, w_vec;
-         int z_vec = ppc_allocate_vec_register(gen->f);
-         int pow_vec = ppc_allocate_vec_register(gen->f);
-         int pos_vec = ppc_allocate_vec_register(gen->f);
-         int p128_vec = ppc_allocate_vec_register(gen->f);
-         int n128_vec = ppc_allocate_vec_register(gen->f);
-
-         y_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_Y);  /* y_vec = src[0].y */
-         ppc_vmaxfp(gen->f, y_vec, y_vec, zero_vec); /* y_vec = max(y_vec, 0) */
-
-         w_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_W);  /* w_vec = src[0].w */
-
-         /* clamp W to [-128, 128] */
-         load_constant_vec(gen, p128_vec, 128.0f);
-         load_constant_vec(gen, n128_vec, -128.0f);
-         ppc_vmaxfp(gen->f, w_vec, w_vec, n128_vec); /* w = max(w, -128) */
-         ppc_vminfp(gen->f, w_vec, w_vec, p128_vec); /* w = min(w, 128) */
-
-         /* if temp.x > 0
-          *    z = pow(tmp.y, tmp.w)
-          * else
-          *    z = 0.0
-          */
-         ppc_vec_pow(gen->f, pow_vec, y_vec, w_vec);      /* pow = pow(y, w) */
-         ppc_vcmpgtfpx(gen->f, pos_vec, x_vec, zero_vec); /* pos = x > 0 */
-         ppc_vand(gen->f, z_vec, pow_vec, pos_vec);       /* z = pow & pos */
-
-         emit_store(gen, z_vec, inst, TGSI_CHAN_Z, FALSE);
-
-         ppc_release_vec_register(gen->f, z_vec);
-         ppc_release_vec_register(gen->f, pow_vec);
-         ppc_release_vec_register(gen->f, pos_vec);
-         ppc_release_vec_register(gen->f, p128_vec);
-         ppc_release_vec_register(gen->f, n128_vec);
-      }
-
-      ppc_release_vec_register(gen->f, zero_vec);
-   }
-
-   /* Compute W */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_W)) {
-      emit_store(gen, one_vec, inst, TGSI_CHAN_W, FALSE);
-   }
-
-   release_src_vecs(gen);
-}
-
-
-static void
-emit_exp(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   const int one_vec = gen_one_vec(gen);
-   int src_vec;
-
-   /* get src arg */
-   src_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_X);
-
-   /* Compute X = 2^floor(src) */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_X)) {
-      int dst_vec = get_dst_vec(gen, inst, TGSI_CHAN_X);
-      int tmp_vec = ppc_allocate_vec_register(gen->f);
-      ppc_vrfim(gen->f, tmp_vec, src_vec);             /* tmp = floor(src); */
-      ppc_vexptefp(gen->f, dst_vec, tmp_vec);          /* dst = 2 ^ tmp */
-      emit_store(gen, dst_vec, inst, TGSI_CHAN_X, TRUE);
-      ppc_release_vec_register(gen->f, tmp_vec);
-   }
-
-   /* Compute Y = src - floor(src) */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Y)) {
-      int dst_vec = get_dst_vec(gen, inst, TGSI_CHAN_Y);
-      int tmp_vec = ppc_allocate_vec_register(gen->f);
-      ppc_vrfim(gen->f, tmp_vec, src_vec);             /* tmp = floor(src); */
-      ppc_vsubfp(gen->f, dst_vec, src_vec, tmp_vec);   /* dst = src - tmp */
-      emit_store(gen, dst_vec, inst, TGSI_CHAN_Y, TRUE);
-      ppc_release_vec_register(gen->f, tmp_vec);
-   }
-
-   /* Compute Z = RoughApprox2ToX(src) */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Z)) {
-      int dst_vec = get_dst_vec(gen, inst, TGSI_CHAN_Z);
-      ppc_vexptefp(gen->f, dst_vec, src_vec);          /* dst = 2 ^ src */
-      emit_store(gen, dst_vec, inst, TGSI_CHAN_Z, TRUE);
-   }
-
-   /* Compute W = 1.0 */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_W)) {
-      emit_store(gen, one_vec, inst, TGSI_CHAN_W, FALSE);
-   }
-
-   release_src_vecs(gen);
-}
-
-
-static void
-emit_log(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   const int bit31_vec = gen_get_bit31_vec(gen);
-   const int one_vec = gen_one_vec(gen);
-   int src_vec, abs_vec;
-
-   /* get src arg */
-   src_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_X);
-
-   /* compute abs(src) */
-   abs_vec = ppc_allocate_vec_register(gen->f);
-   ppc_vandc(gen->f, abs_vec, src_vec, bit31_vec);     /* abs = src & ~bit31 */
-
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_X) &&
-      TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Y)) {
-
-      /* compute tmp = floor(log2(abs)) */
-      int tmp_vec = ppc_allocate_vec_register(gen->f);
-      ppc_vlogefp(gen->f, tmp_vec, abs_vec);           /* tmp = log2(abs) */
-      ppc_vrfim(gen->f, tmp_vec, tmp_vec);             /* tmp = floor(tmp); */
-
-      /* Compute X = tmp */
-      if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_X)) {
-         emit_store(gen, tmp_vec, inst, TGSI_CHAN_X, FALSE);
-      }
-      
-      /* Compute Y = abs / 2^tmp */
-      if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Y)) {
-         const int zero_vec = ppc_allocate_vec_register(gen->f);
-         ppc_vzero(gen->f, zero_vec);
-         ppc_vexptefp(gen->f, tmp_vec, tmp_vec);       /* tmp = 2 ^ tmp */
-         ppc_vrefp(gen->f, tmp_vec, tmp_vec);          /* tmp = 1 / tmp */
-         /* tmp = abs * tmp + zero */
-         ppc_vmaddfp(gen->f, tmp_vec, abs_vec, tmp_vec, zero_vec);
-         emit_store(gen, tmp_vec, inst, TGSI_CHAN_Y, FALSE);
-         ppc_release_vec_register(gen->f, zero_vec);
-      }
-
-      ppc_release_vec_register(gen->f, tmp_vec);
-   }
-
-   /* Compute Z = RoughApproxLog2(abs) */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Z)) {
-      int dst_vec = get_dst_vec(gen, inst, TGSI_CHAN_Z);
-      ppc_vlogefp(gen->f, dst_vec, abs_vec);           /* dst = log2(abs) */
-      emit_store(gen, dst_vec, inst, TGSI_CHAN_Z, TRUE);
-   }
-
-   /* Compute W = 1.0 */
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_W)) {
-      emit_store(gen, one_vec, inst, TGSI_CHAN_W, FALSE);
-   }
-
-   ppc_release_vec_register(gen->f, abs_vec);
-   release_src_vecs(gen);
-}
-
-
-static void
-emit_pow(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   int s0_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_X);
-   int s1_vec = get_src_vec(gen, inst, 1, TGSI_CHAN_X);
-   int pow_vec = ppc_allocate_vec_register(gen->f);
-   int chan;
-
-   ppc_vec_pow(gen->f, pow_vec, s0_vec, s1_vec);
-
-   TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst, chan) {
-      emit_store(gen, pow_vec, inst, chan, FALSE);
-   }
-
-   ppc_release_vec_register(gen->f, pow_vec);
-
-   release_src_vecs(gen);
-}
-
-
-static void
-emit_xpd(struct gen_context *gen, struct tgsi_full_instruction *inst)
-{
-   int x0_vec, y0_vec, z0_vec;
-   int x1_vec, y1_vec, z1_vec;
-   int zero_vec, tmp_vec;
-   int tmp2_vec;
-
-   zero_vec = ppc_allocate_vec_register(gen->f);
-   ppc_vzero(gen->f, zero_vec);
-
-   tmp_vec = ppc_allocate_vec_register(gen->f);
-   tmp2_vec = ppc_allocate_vec_register(gen->f);
-
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Y) ||
-      TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Z)) {
-      x0_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_X);
-      x1_vec = get_src_vec(gen, inst, 1, TGSI_CHAN_X);
-   }
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_X) ||
-      TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Z)) {
-      y0_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_Y);
-      y1_vec = get_src_vec(gen, inst, 1, TGSI_CHAN_Y);
-   }
-   if (TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_X) ||
-      TGSI_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Y)) {
-      z0_vec = get_src_vec(gen, inst, 0, TGSI_CHAN_Z);
-      z1_vec = get_src_vec(gen, inst, 1, TGSI_CHAN_Z);
-   }
-
-   TGSI_IF_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_X) {
-      /* tmp = y0 * z1 */
-      ppc_vmaddfp(gen->f, tmp_vec, y0_vec, z1_vec, zero_vec);
-      /* tmp = tmp - z0 * y1*/
-      ppc_vnmsubfp(gen->f, tmp_vec, tmp_vec, z0_vec, y1_vec);
-      emit_store(gen, tmp_vec, inst, TGSI_CHAN_X, FALSE);
-   }
-   TGSI_IF_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Y) {
-      /* tmp = z0 * x1 */
-      ppc_vmaddfp(gen->f, tmp_vec, z0_vec, x1_vec, zero_vec);
-      /* tmp = tmp - x0 * z1 */
-      ppc_vnmsubfp(gen->f, tmp_vec, tmp_vec, x0_vec, z1_vec);
-      emit_store(gen, tmp_vec, inst, TGSI_CHAN_Y, FALSE);
-   }
-   TGSI_IF_IS_DST0_CHANNEL_ENABLED(inst, TGSI_CHAN_Z) {
-      /* tmp = x0 * y1 */
-      ppc_vmaddfp(gen->f, tmp_vec, x0_vec, y1_vec, zero_vec);
-      /* tmp = tmp - y0 * x1 */
-      ppc_vnmsubfp(gen->f, tmp_vec, tmp_vec, y0_vec, x1_vec);
-      emit_store(gen, tmp_vec, inst, TGSI_CHAN_Z, FALSE);
-   }
-   /* W is undefined */
-
-   ppc_release_vec_register(gen->f, tmp_vec);
-   ppc_release_vec_register(gen->f, zero_vec);
-   release_src_vecs(gen);
-}
-
-static int
-emit_instruction(struct gen_context *gen,
-                 struct tgsi_full_instruction *inst)
-{
-
-   /* we don't handle saturation/clamping yet */
-   if (inst->Instruction.Saturate != TGSI_SAT_NONE)
-      return 0;
-
-   /* need to use extra temps to fix SOA dependencies : */
-   if (tgsi_check_soa_dependencies(inst))
-      return FALSE;
-
-   switch (inst->Instruction.Opcode) {
-   case TGSI_OPCODE_MOV:
-   case TGSI_OPCODE_ABS:
-   case TGSI_OPCODE_FLR:
-   case TGSI_OPCODE_FRC:
-   case TGSI_OPCODE_EX2:
-   case TGSI_OPCODE_LG2:
-      emit_unaryop(gen, inst);
-      break;
-   case TGSI_OPCODE_RSQ:
-   case TGSI_OPCODE_RCP:
-      emit_scalar_unaryop(gen, inst);
-      break;
-   case TGSI_OPCODE_ADD:
-   case TGSI_OPCODE_SUB:
-   case TGSI_OPCODE_MUL:
-   case TGSI_OPCODE_MIN:
-   case TGSI_OPCODE_MAX:
-      emit_binop(gen, inst);
-      break;
-   case TGSI_OPCODE_SEQ:
-   case TGSI_OPCODE_SNE:
-   case TGSI_OPCODE_SLT:
-   case TGSI_OPCODE_SGT:
-   case TGSI_OPCODE_SLE:
-   case TGSI_OPCODE_SGE:
-      emit_inequality(gen, inst);
-      break;
-   case TGSI_OPCODE_MAD:
-   case TGSI_OPCODE_LRP:
-      emit_triop(gen, inst);
-      break;
-   case TGSI_OPCODE_DP3:
-   case TGSI_OPCODE_DP4:
-   case TGSI_OPCODE_DPH:
-      emit_dotprod(gen, inst);
-      break;
-   case TGSI_OPCODE_LIT:
-      emit_lit(gen, inst);
-      break;
-   case TGSI_OPCODE_LOG:
-      emit_log(gen, inst);
-      break;
-   case TGSI_OPCODE_EXP:
-      emit_exp(gen, inst);
-      break;
-   case TGSI_OPCODE_POW:
-      emit_pow(gen, inst);
-      break;
-   case TGSI_OPCODE_XPD:
-      emit_xpd(gen, inst);
-      break;
-   case TGSI_OPCODE_END:
-      /* normal end */
-      return 1;
-   default:
-      return 0;
-   }
-   return 1;
-}
-
-
-static void
-emit_declaration(
-   struct ppc_function *func,
-   struct tgsi_full_declaration *decl )
-{
-   if( decl->Declaration.File == TGSI_FILE_INPUT ||
-       decl->Declaration.File == TGSI_FILE_SYSTEM_VALUE ) {
-#if 0
-      unsigned first, last, mask;
-      unsigned i, j;
-
-      first = decl->Range.First;
-      last = decl->Range.Last;
-      mask = decl->Declaration.UsageMask;
-
-      for( i = first; i <= last; i++ ) {
-         for( j = 0; j < NUM_CHANNELS; j++ ) {
-            if( mask & (1 << j) ) {
-               switch( decl->Interp.Interpolate ) {
-               case TGSI_INTERPOLATE_CONSTANT:
-                  emit_coef_a0( func, 0, i, j );
-                  emit_inputs( func, 0, i, j );
-                  break;
-
-               case TGSI_INTERPOLATE_LINEAR:
-                  emit_tempf( func, 0, 0, TGSI_SWIZZLE_X );
-                  emit_coef_dadx( func, 1, i, j );
-                  emit_tempf( func, 2, 0, TGSI_SWIZZLE_Y );
-                  emit_coef_dady( func, 3, i, j );
-                  emit_mul( func, 0, 1 );    /* x * dadx */
-                  emit_coef_a0( func, 4, i, j );
-                  emit_mul( func, 2, 3 );    /* y * dady */
-                  emit_add( func, 0, 4 );    /* x * dadx + a0 */
-                  emit_add( func, 0, 2 );    /* x * dadx + y * dady + a0 */
-                  emit_inputs( func, 0, i, j );
-                  break;
-
-               case TGSI_INTERPOLATE_PERSPECTIVE:
-                  emit_tempf( func, 0, 0, TGSI_SWIZZLE_X );
-                  emit_coef_dadx( func, 1, i, j );
-                  emit_tempf( func, 2, 0, TGSI_SWIZZLE_Y );
-                  emit_coef_dady( func, 3, i, j );
-                  emit_mul( func, 0, 1 );    /* x * dadx */
-                  emit_tempf( func, 4, 0, TGSI_SWIZZLE_W );
-                  emit_coef_a0( func, 5, i, j );
-                  emit_rcp( func, 4, 4 );    /* 1.0 / w */
-                  emit_mul( func, 2, 3 );    /* y * dady */
-                  emit_add( func, 0, 5 );    /* x * dadx + a0 */
-                  emit_add( func, 0, 2 );    /* x * dadx + y * dady + a0 */
-                  emit_mul( func, 0, 4 );    /* (x * dadx + y * dady + a0) / w */
-                  emit_inputs( func, 0, i, j );
-                  break;
-
-               default:
-                  assert( 0 );
-		  break;
-               }
-            }
-         }
-      }
-#endif
-   }
-}
-
-
-
-static void
-emit_prologue(struct ppc_function *func)
-{
-   /* XXX set up stack frame */
-}
-
-
-static void
-emit_epilogue(struct ppc_function *func)
-{
-   ppc_comment(func, -4, "Epilogue:");
-   ppc_return(func);
-   /* XXX restore prev stack frame */
-#if 0
-   debug_printf("PPC: Emitted %u instructions\n", func->num_inst);
-#endif
-}
-
-
-
-/**
- * Translate a TGSI vertex/fragment shader to PPC code.
- *
- * \param tokens  the TGSI input shader
- * \param func  the output PPC code/function
- * \param immediates  buffer to place immediates, later passed to PPC func
- * \return TRUE for success, FALSE if translation failed
- */
-boolean
-tgsi_emit_ppc(const struct tgsi_token *tokens,
-              struct ppc_function *func,
-              float (*immediates)[4],
-              boolean do_swizzles )
-{
-   static int use_ppc_asm = -1;
-   struct tgsi_parse_context parse;
-   /*boolean instruction_phase = FALSE;*/
-   unsigned ok = 1;
-   uint num_immediates = 0;
-   struct gen_context gen;
-   uint ic = 0;
-
-   if (use_ppc_asm < 0) {
-      /* If GALLIUM_NOPPC is set, don't use PPC codegen */
-      use_ppc_asm = !debug_get_bool_option("GALLIUM_NOPPC", FALSE);
-   }
-   if (!use_ppc_asm)
-      return FALSE;
-
-   if (0) {
-      debug_printf("\n********* TGSI->PPC ********\n");
-      tgsi_dump(tokens, 0);
-   }
-
-   util_init_math();
-
-   init_gen_context(&gen, func);
-
-   emit_prologue(func);
-
-   tgsi_parse_init( &parse, tokens );
-
-   while (!tgsi_parse_end_of_tokens(&parse) && ok) {
-      tgsi_parse_token(&parse);
-
-      switch (parse.FullToken.Token.Type) {
-      case TGSI_TOKEN_TYPE_DECLARATION:
-         if (parse.FullHeader.Processor.Processor == TGSI_PROCESSOR_FRAGMENT) {
-            emit_declaration(func, &parse.FullToken.FullDeclaration );
-         }
-         break;
-
-      case TGSI_TOKEN_TYPE_INSTRUCTION:
-         if (func->print) {
-            _debug_printf("# ");
-            ic++;
-            tgsi_dump_instruction(&parse.FullToken.FullInstruction, ic);
-         }
-
-         ok = emit_instruction(&gen, &parse.FullToken.FullInstruction);
-
-	 if (!ok) {
-            uint opcode = parse.FullToken.FullInstruction.Instruction.Opcode;
-	    debug_printf("failed to translate tgsi opcode %d (%s) to PPC (%s)\n", 
-			 opcode,
-                         tgsi_get_opcode_name(opcode),
-                         parse.FullHeader.Processor.Processor == TGSI_PROCESSOR_VERTEX ?
-                         "vertex shader" : "fragment shader");
-	 }
-         break;
-
-      case TGSI_TOKEN_TYPE_IMMEDIATE:
-         /* splat each immediate component into a float[4] vector for SoA */
-         {
-            const uint size = parse.FullToken.FullImmediate.Immediate.NrTokens - 1;
-            uint i;
-            assert(size <= 4);
-            assert(num_immediates < TGSI_EXEC_NUM_IMMEDIATES);
-            for (i = 0; i < size; i++) {
-               immediates[num_immediates][i] =
-		  parse.FullToken.FullImmediate.u[i].Float;
-            }
-            num_immediates++;
-         }
-         break;
-
-      case TGSI_TOKEN_TYPE_PROPERTY:
-         break;
-
-      default:
-	 ok = 0;
-         assert( 0 );
-      }
-   }
-
-   emit_epilogue(func);
-
-   tgsi_parse_free( &parse );
-
-   if (ppc_num_instructions(func) == 0) {
-      /* ran out of memory for instructions */
-      ok = FALSE;
-   }
-
-   if (!ok)
-      debug_printf("TGSI->PPC translation failed\n");
-
-   return ok;
-}
-
-#else
-
-void ppc_dummy_func(void);
-
-void ppc_dummy_func(void)
-{
-}
-
-#endif /* PIPE_ARCH_PPC */
diff --git a/src/gallium/auxiliary/tgsi/tgsi_ppc.h b/src/gallium/auxiliary/tgsi/tgsi_ppc.h
deleted file mode 100644
index 829ec07..0000000
--- a/src/gallium/auxiliary/tgsi/tgsi_ppc.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- * 
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- * 
- **************************************************************************/
-
-#ifndef TGSI_PPC_H
-#define TGSI_PPC_H
-
-#if defined __cplusplus
-extern "C" {
-#endif
-
-struct tgsi_token;
-struct ppc_function;
-
-extern const float ppc_builtin_constants[];
-
-
-boolean
-tgsi_emit_ppc(const struct tgsi_token *tokens,
-              struct ppc_function *function,
-              float (*immediates)[4],
-              boolean do_swizzles);
-
-#if defined __cplusplus
-}
-#endif
-
-#endif /* TGSI_PPC_H */