gallium: remove SSE remnants from tgsi_ppc.c

1 files changed, 0 insertions, 2153 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_ppc.c b/src/gallium/auxiliary/tgsi/tgsi_ppc.c
index 3637772102..432ec7459b 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ppc.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_ppc.c
@@ -44,14 +44,6 @@
 #include "rtasm/rtasm_ppc.h"
 
 
-/* for 1/sqrt()
- *
- * This costs about 100fps (close to 10%) in gears:
- */
-#define HIGH_PRECISION 1
-
-#define FAST_MATH 1
-
 
 #define FOR_EACH_CHANNEL( CHAN )\
    for (CHAN = 0; CHAN < NUM_CHANNELS; CHAN++)
@@ -95,973 +87,6 @@ struct gen_context
 };
 
 
-
-#if 0000
-
-/**
- * X86 utility functions.
- */
-
-static struct x86_reg
-make_xmm(
-   unsigned xmm )
-{
-   return x86_make_reg(
-      file_XMM,
-      (enum x86_reg_name) xmm );
-}
-
-/**
- * X86 register mapping helpers.
- */
-
-static struct x86_reg
-get_const_base( void )
-{
-   return x86_make_reg(
-      file_REG32,
-      reg_CX );
-}
-
-static struct x86_reg
-get_input_base( void )
-{
-   return x86_make_reg(
-      file_REG32,
-      reg_AX );
-}
-
-static struct x86_reg
-get_output_base( void )
-{
-   return x86_make_reg(
-      file_REG32,
-      reg_DX );
-}
-
-static struct x86_reg
-get_temp_base( void )
-{
-   return x86_make_reg(
-      file_REG32,
-      reg_BX );
-}
-
-static struct x86_reg
-get_coef_base( void )
-{
-   return get_output_base();
-}
-
-static struct x86_reg
-get_immediate_base( void )
-{
-   return x86_make_reg(
-      file_REG32,
-      reg_DI );
-}
-
-
-/**
- * Data access helpers.
- */
-
-
-static struct x86_reg
-get_immediate(
-   unsigned vec,
-   unsigned chan )
-{
-   return x86_make_disp(
-      get_immediate_base(),
-      (vec * 4 + chan) * 4 );
-}
-
-static struct x86_reg
-get_const(
-   unsigned vec,
-   unsigned chan )
-{
-   return x86_make_disp(
-      get_const_base(),
-      (vec * 4 + chan) * 4 );
-}
-
-static struct x86_reg
-get_input(
-   unsigned vec,
-   unsigned chan )
-{
-   return x86_make_disp(
-      get_input_base(),
-      (vec * 4 + chan) * 16 );
-}
-
-static struct x86_reg
-get_output(
-   unsigned vec,
-   unsigned chan )
-{
-   return x86_make_disp(
-      get_output_base(),
-      (vec * 4 + chan) * 16 );
-}
-
-static struct x86_reg
-get_temp(
-   unsigned vec,
-   unsigned chan )
-{
-   return x86_make_disp(
-      get_temp_base(),
-      (vec * 4 + chan) * 16 );
-}
-
-static struct x86_reg
-get_coef(
-   unsigned vec,
-   unsigned chan,
-   unsigned member )
-{
-   return x86_make_disp(
-      get_coef_base(),
-      ((vec * 3 + member) * 4 + chan) * 4 );
-}
-
-
-static void
-emit_ret(
-   struct x86_function  *func )
-{
-   x86_ret( func );
-}
-
-#endif
-
-/**
- * Data fetch helpers.
- */
-
-#if 00
-/**
- * Copy a shader constant to xmm register
- * \param xmm  the destination xmm register
- * \param vec  the src const buffer index
- * \param chan  src channel to fetch (X, Y, Z or W)
- */
-static void
-emit_const(
-   struct x86_function *func,
-   uint xmm,
-   int vec,
-   uint chan,
-   uint indirect,
-   uint indirectFile,
-   int indirectIndex )
-{
-   if (indirect) {
-      struct x86_reg r0 = get_input_base();
-      struct x86_reg r1 = get_output_base();
-      uint i;
-
-      assert( indirectFile == TGSI_FILE_ADDRESS );
-      assert( indirectIndex == 0 );
-
-      x86_push( func, r0 );
-      x86_push( func, r1 );
-
-      for (i = 0; i < QUAD_SIZE; i++) {
-         x86_lea( func, r0, get_const( vec, chan ) );
-         x86_mov( func, r1, x86_make_disp( get_temp( TEMP_ADDR, CHAN_X ), i * 4 ) );
-
-         /* Quick hack to multiply by 16 -- need to add SHL to rtasm.
-          */
-         x86_add( func, r1, r1 );
-         x86_add( func, r1, r1 );
-         x86_add( func, r1, r1 );
-         x86_add( func, r1, r1 );
-
-         x86_add( func, r0, r1 );
-         x86_mov( func, r1, x86_deref( r0 ) );
-         x86_mov( func, x86_make_disp( get_temp( TEMP_R0, CHAN_X ), i * 4 ), r1 );
-      }
-
-      x86_pop( func, r1 );
-      x86_pop( func, r0 );
-
-      sse_movaps(
-         func,
-         make_xmm( xmm ),
-         get_temp( TEMP_R0, CHAN_X ) );
-   }
-   else {
-      assert( vec >= 0 );
-
-      sse_movss(
-         func,
-         make_xmm( xmm ),
-         get_const( vec, chan ) );
-      sse_shufps(
-         func,
-         make_xmm( xmm ),
-         make_xmm( xmm ),
-         SHUF( 0, 0, 0, 0 ) );
-   }
-}
-
-static void
-emit_immediate(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   sse_movss(
-      func,
-      make_xmm( xmm ),
-      get_immediate( vec, chan ) );
-   sse_shufps(
-      func,
-      make_xmm( xmm ),
-      make_xmm( xmm ),
-      SHUF( 0, 0, 0, 0 ) );
-}
-
-
-/**
- * Copy a shader input to xmm register
- * \param xmm  the destination xmm register
- * \param vec  the src input attrib
- * \param chan  src channel to fetch (X, Y, Z or W)
- */
-static void
-emit_inputf(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   sse_movups(
-      func,
-      make_xmm( xmm ),
-      get_input( vec, chan ) );
-}
-
-/**
- * Store an xmm register to a shader output
- * \param xmm  the source xmm register
- * \param vec  the dest output attrib
- * \param chan  src dest channel to store (X, Y, Z or W)
- */
-static void
-emit_output(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   sse_movups(
-      func,
-      get_output( vec, chan ),
-      make_xmm( xmm ) );
-}
-
-/**
- * Copy a shader temporary to xmm register
- * \param xmm  the destination xmm register
- * \param vec  the src temp register
- * \param chan  src channel to fetch (X, Y, Z or W)
- */
-static void
-emit_tempf(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   sse_movaps(
-      func,
-      make_xmm( xmm ),
-      get_temp( vec, chan ) );
-}
-
-/**
- * Load an xmm register with an input attrib coefficient (a0, dadx or dady)
- * \param xmm  the destination xmm register
- * \param vec  the src input/attribute coefficient index
- * \param chan  src channel to fetch (X, Y, Z or W)
- * \param member  0=a0, 1=dadx, 2=dady
- */
-static void
-emit_coef(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan,
-   unsigned member )
-{
-   sse_movss(
-      func,
-      make_xmm( xmm ),
-      get_coef( vec, chan, member ) );
-   sse_shufps(
-      func,
-      make_xmm( xmm ),
-      make_xmm( xmm ),
-      SHUF( 0, 0, 0, 0 ) );
-}
-
-/**
- * Data store helpers.
- */
-
-static void
-emit_inputs(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   sse_movups(
-      func,
-      get_input( vec, chan ),
-      make_xmm( xmm ) );
-}
-
-static void
-emit_temps(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   sse_movaps(
-      func,
-      get_temp( vec, chan ),
-      make_xmm( xmm ) );
-}
-
-static void
-emit_addrs(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   assert( vec == 0 );
-
-   emit_temps(
-      func,
-      xmm,
-      vec + TGSI_EXEC_TEMP_ADDR,
-      chan );
-}
-
-/**
- * Coefficent fetch helpers.
- */
-
-static void
-emit_coef_a0(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   emit_coef(
-      func,
-      xmm,
-      vec,
-      chan,
-      0 );
-}
-
-static void
-emit_coef_dadx(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   emit_coef(
-      func,
-      xmm,
-      vec,
-      chan,
-      1 );
-}
-
-static void
-emit_coef_dady(
-   struct x86_function *func,
-   unsigned xmm,
-   unsigned vec,
-   unsigned chan )
-{
-   emit_coef(
-      func,
-      xmm,
-      vec,
-      chan,
-      2 );
-}
-#endif
-
-
-/**
- * Function call helpers.
- */
-
-#if 00
-/**
- * NOTE: In gcc, if the destination uses the SSE intrinsics, then it must be 
- * defined with __attribute__((force_align_arg_pointer)), as we do not guarantee
- * that the stack pointer is 16 byte aligned, as expected.
- */
-static void
-emit_func_call_dst(
-   struct x86_function *func,
-   unsigned xmm_save,
-   unsigned xmm_dst,
-   void (PIPE_CDECL *code)() )
-{
-   struct x86_reg ecx = x86_make_reg( file_REG32, reg_CX );
-   unsigned i, n, xmm;
-   unsigned xmm_mask;
-   
-   /* Bitmask of the xmm registers to save */
-   xmm_mask = (1 << xmm_save) - 1;
-   xmm_mask &= ~(1 << xmm_dst);
-
-   sse_movaps(
-      func,
-      get_temp( TEMP_R0, 0 ),
-      make_xmm( xmm_dst ) );
-
-   x86_push(
-      func,
-      x86_make_reg( file_REG32, reg_AX) );
-   x86_push(
-      func,
-      x86_make_reg( file_REG32, reg_CX) );
-   x86_push(
-      func,
-      x86_make_reg( file_REG32, reg_DX) );
-   
-   for(i = 0, n = 0; i < 8; ++i)
-      if(xmm_mask & (1 << i))
-         ++n;
-   
-   x86_sub_imm(
-      func, 
-      x86_make_reg( file_REG32, reg_SP ),
-      n*16);
-
-   for(i = 0, n = 0; i < 8; ++i)
-      if(xmm_mask & (1 << i)) {
-         sse_movups(
-            func,
-            x86_make_disp( x86_make_reg( file_REG32, reg_SP ), n*16 ),
-            make_xmm( xmm ) );
-         ++n;
-      }
-   
-   x86_lea(
-      func,
-      ecx,
-      get_temp( TEMP_R0, 0 ) );
-   
-   x86_push( func, ecx );
-   x86_mov_reg_imm( func, ecx, (unsigned long) code );
-   x86_call( func, ecx );
-   x86_pop(func, ecx );
-   
-   for(i = 0, n = 0; i < 8; ++i)
-      if(xmm_mask & (1 << i)) {
-         sse_movups(
-            func,
-            make_xmm( xmm ),
-            x86_make_disp( x86_make_reg( file_REG32, reg_SP ), n*16 ) );
-         ++n;
-      }
-   
-   x86_add_imm(
-      func, 
-      x86_make_reg( file_REG32, reg_SP ),
-      n*16);
-
-   /* Restore GP registers in a reverse order.
-    */
-   x86_pop(
-      func,
-      x86_make_reg( file_REG32, reg_DX) );
-   x86_pop(
-      func,
-      x86_make_reg( file_REG32, reg_CX) );
-   x86_pop(
-      func,
-      x86_make_reg( file_REG32, reg_AX) );
-
-   sse_movaps(
-      func,
-      make_xmm( xmm_dst ),
-      get_temp( TEMP_R0, 0 ) );
-}
-
-static void
-emit_func_call_dst_src(
-   struct x86_function *func,
-   unsigned xmm_save, 
-   unsigned xmm_dst,
-   unsigned xmm_src,
-   void (PIPE_CDECL *code)() )
-{
-   sse_movaps(
-      func,
-      get_temp( TEMP_R0, 1 ),
-      make_xmm( xmm_src ) );
-
-   emit_func_call_dst(
-      func,
-      xmm_save,
-      xmm_dst,
-      code );
-}
-
-/*
- * Fast SSE2 implementation of special math functions.
- */
-
-#define POLY0(x, c0) _mm_set1_ps(c0)
-#define POLY1(x, c0, c1) _mm_add_ps(_mm_mul_ps(POLY0(x, c1), x), _mm_set1_ps(c0))
-#define POLY2(x, c0, c1, c2) _mm_add_ps(_mm_mul_ps(POLY1(x, c1, c2), x), _mm_set1_ps(c0))
-#define POLY3(x, c0, c1, c2, c3) _mm_add_ps(_mm_mul_ps(POLY2(x, c1, c2, c3), x), _mm_set1_ps(c0))
-#define POLY4(x, c0, c1, c2, c3, c4) _mm_add_ps(_mm_mul_ps(POLY3(x, c1, c2, c3, c4), x), _mm_set1_ps(c0))
-#define POLY5(x, c0, c1, c2, c3, c4, c5) _mm_add_ps(_mm_mul_ps(POLY4(x, c1, c2, c3, c4, c5), x), _mm_set1_ps(c0))
-
-#define EXP_POLY_DEGREE 3
-#define LOG_POLY_DEGREE 5
-
-/**
- * See http://www.devmaster.net/forums/showthread.php?p=43580
- */
-static INLINE __m128 
-exp2f4(__m128 x)
-{
-   __m128i ipart;
-   __m128 fpart, expipart, expfpart;
-
-   x = _mm_min_ps(x, _mm_set1_ps( 129.00000f));
-   x = _mm_max_ps(x, _mm_set1_ps(-126.99999f));
-
-   /* ipart = int(x - 0.5) */
-   ipart = _mm_cvtps_epi32(_mm_sub_ps(x, _mm_set1_ps(0.5f)));
-
-   /* fpart = x - ipart */
-   fpart = _mm_sub_ps(x, _mm_cvtepi32_ps(ipart));
-
-   /* expipart = (float) (1 << ipart) */
-   expipart = _mm_castsi128_ps(_mm_slli_epi32(_mm_add_epi32(ipart, _mm_set1_epi32(127)), 23));
-
-   /* minimax polynomial fit of 2**x, in range [-0.5, 0.5[ */
-#if EXP_POLY_DEGREE == 5
-   expfpart = POLY5(fpart, 9.9999994e-1f, 6.9315308e-1f, 2.4015361e-1f, 5.5826318e-2f, 8.9893397e-3f, 1.8775767e-3f);
-#elif EXP_POLY_DEGREE == 4
-   expfpart = POLY4(fpart, 1.0000026f, 6.9300383e-1f, 2.4144275e-1f, 5.2011464e-2f, 1.3534167e-2f);
-#elif EXP_POLY_DEGREE == 3
-   expfpart = POLY3(fpart, 9.9992520e-1f, 6.9583356e-1f, 2.2606716e-1f, 7.8024521e-2f);
-#elif EXP_POLY_DEGREE == 2
-   expfpart = POLY2(fpart, 1.0017247f, 6.5763628e-1f, 3.3718944e-1f);
-#else
-#error
-#endif
-
-   return _mm_mul_ps(expipart, expfpart);
-}
-
-/**
- * See http://www.devmaster.net/forums/showthread.php?p=43580
- */
-static INLINE __m128 
-log2f4(__m128 x)
-{
-   __m128i expmask = _mm_set1_epi32(0x7f800000);
-   __m128i mantmask = _mm_set1_epi32(0x007fffff);
-   __m128 one = _mm_set1_ps(1.0f);
-
-   __m128i i = _mm_castps_si128(x);
-
-   /* exp = (float) exponent(x) */
-   __m128 exp = _mm_cvtepi32_ps(_mm_sub_epi32(_mm_srli_epi32(_mm_and_si128(i, expmask), 23), _mm_set1_epi32(127)));
-
-   /* mant = (float) mantissa(x) */
-   __m128 mant = _mm_or_ps(_mm_castsi128_ps(_mm_and_si128(i, mantmask)), one);
-
-   __m128 logmant;
-
-   /* Minimax polynomial fit of log2(x)/(x - 1), for x in range [1, 2[ 
-    * These coefficients can be generate with 
-    * http://www.boost.org/doc/libs/1_36_0/libs/math/doc/sf_and_dist/html/math_toolkit/toolkit/internals2/minimax.html
-    */
-#if LOG_POLY_DEGREE == 6
-   logmant = POLY5(mant, 3.11578814719469302614f, -3.32419399085241980044f, 2.59883907202499966007f, -1.23152682416275988241f, 0.318212422185251071475f, -0.0344359067839062357313f);
-#elif LOG_POLY_DEGREE == 5
-   logmant = POLY4(mant, 2.8882704548164776201f, -2.52074962577807006663f, 1.48116647521213171641f, -0.465725644288844778798f, 0.0596515482674574969533f);
-#elif LOG_POLY_DEGREE == 4
-   logmant = POLY3(mant, 2.61761038894603480148f, -1.75647175389045657003f, 0.688243882994381274313f, -0.107254423828329604454f);
-#elif LOG_POLY_DEGREE == 3
-   logmant = POLY2(mant, 2.28330284476918490682f, -1.04913055217340124191f, 0.204446009836232697516f);
-#else
-#error
-#endif
-
-   /* This effectively increases the polynomial degree by one, but ensures that log2(1) == 0*/
-   logmant = _mm_mul_ps(logmant, _mm_sub_ps(mant, one));
-
-   return _mm_add_ps(logmant, exp);
-}
-
-static INLINE __m128
-powf4(__m128 x, __m128 y)
-{
-   return exp2f4(_mm_mul_ps(log2f4(x), y));
-}
-
-
-/**
- * Low-level instruction translators.
- */
-
-static void
-emit_abs(
-   struct x86_function *func,
-   unsigned xmm )
-{
-   sse_andps(
-      func,
-      make_xmm( xmm ),
-      get_temp(
-         TGSI_EXEC_TEMP_7FFFFFFF_I,
-         TGSI_EXEC_TEMP_7FFFFFFF_C ) );
-}
-
-static void
-emit_add(
-   struct x86_function *func,
-   unsigned xmm_dst,
-   unsigned xmm_src )
-{
-   sse_addps(
-      func,
-      make_xmm( xmm_dst ),
-      make_xmm( xmm_src ) );
-}
-
-static void PIPE_CDECL
-cos4f(
-   float *store )
-{
-   store[0] = cosf( store[0] );
-   store[1] = cosf( store[1] );
-   store[2] = cosf( store[2] );
-   store[3] = cosf( store[3] );
-}
-
-static void
-emit_cos(
-   struct x86_function *func,
-   unsigned xmm_save, 
-   unsigned xmm_dst )
-{
-   emit_func_call_dst(
-      func,
-      xmm_save, 
-      xmm_dst,
-      cos4f );
-}
-
-static void PIPE_CDECL
-#if defined(PIPE_CC_GCC)
-__attribute__((force_align_arg_pointer))
-#endif
-ex24f(
-   float *store )
-{
-   _mm_store_ps(&store[0], exp2f4( _mm_load_ps(&store[0]) ));
-}
-
-static void
-emit_ex2(
-   struct x86_function *func,
-   unsigned xmm_save, 
-   unsigned xmm_dst )
-{
-   emit_func_call_dst(
-      func,
-      xmm_save,
-      xmm_dst,
-      ex24f );
-}
-
-static void
-emit_f2it(
-   struct x86_function *func,
-   unsigned xmm )
-{
-   sse2_cvttps2dq(
-      func,
-      make_xmm( xmm ),
-      make_xmm( xmm ) );
-}
-
-static void PIPE_CDECL
-flr4f(
-   float *store )
-{
-   store[0] = floorf( store[0] );
-   store[1] = floorf( store[1] );
-   store[2] = floorf( store[2] );
-   store[3] = floorf( store[3] );
-}
-
-static void
-emit_flr(
-   struct x86_function *func,
-   unsigned xmm_save, 
-   unsigned xmm_dst )
-{
-   emit_func_call_dst(
-      func,
-      xmm_save,
-      xmm_dst,
-      flr4f );
-}
-
-static void PIPE_CDECL
-frc4f(
-   float *store )
-{
-   store[0] -= floorf( store[0] );
-   store[1] -= floorf( store[1] );
-   store[2] -= floorf( store[2] );
-   store[3] -= floorf( store[3] );
-}
-
-static void
-emit_frc(
-   struct x86_function *func,
-   unsigned xmm_save, 
-   unsigned xmm_dst )
-{
-   emit_func_call_dst(
-      func,
-      xmm_save,
-      xmm_dst,
-      frc4f );
-}
-
-static void PIPE_CDECL
-#if defined(PIPE_CC_GCC)
-__attribute__((force_align_arg_pointer))
-#endif
-lg24f(
-   float *store )
-{
-   _mm_store_ps(&store[0], log2f4( _mm_load_ps(&store[0]) ));
-}
-
-static void
-emit_lg2(
-   struct x86_function *func,
-   unsigned xmm_save, 
-   unsigned xmm_dst )
-{
-   emit_func_call_dst(
-      func,
-      xmm_save,
-      xmm_dst,
-      lg24f );
-}
-
-static void
-emit_MOV(
-   struct x86_function *func,
-   unsigned xmm_dst,
-   unsigned xmm_src )
-{
-   sse_movups(
-      func,
-      make_xmm( xmm_dst ),
-      make_xmm( xmm_src ) );
-}
-
-static void
-emit_mul (struct x86_function *func,
-          unsigned xmm_dst,
-          unsigned xmm_src)
-{
-   sse_mulps(
-      func,
-      make_xmm( xmm_dst ),
-      make_xmm( xmm_src ) );
-}
-
-static void
-emit_neg(
-   struct x86_function *func,
-   unsigned xmm )
-{
-   sse_xorps(
-      func,
-      make_xmm( xmm ),
-      get_temp(
-         TGSI_EXEC_TEMP_80000000_I,
-         TGSI_EXEC_TEMP_80000000_C ) );
-}
-
-static void PIPE_CDECL
-#if defined(PIPE_CC_GCC)
-__attribute__((force_align_arg_pointer))
-#endif
-pow4f(
-   float *store )
-{
-#if 1
-   _mm_store_ps(&store[0], powf4( _mm_load_ps(&store[0]), _mm_load_ps(&store[4]) ));
-#else
-   store[0] = powf( store[0], store[4] );
-   store[1] = powf( store[1], store[5] );
-   store[2] = powf( store[2], store[6] );
-   store[3] = powf( store[3], store[7] );
-#endif
-}
-
-static void
-emit_pow(
-   struct x86_function *func,
-   unsigned xmm_save, 
-   unsigned xmm_dst,
-   unsigned xmm_src )
-{
-   emit_func_call_dst_src(
-      func,
-      xmm_save,
-      xmm_dst,
-      xmm_src,
-      pow4f );
-}
-
-static void
-emit_rcp (
-   struct x86_function *func,
-   unsigned xmm_dst,
-   unsigned xmm_src )
-{
-   /* On Intel CPUs at least, this is only accurate to 12 bits -- not
-    * good enough.  Need to either emit a proper divide or use the
-    * iterative technique described below in emit_rsqrt().
-    */
-   sse2_rcpps(
-      func,
-      make_xmm( xmm_dst ),
-      make_xmm( xmm_src ) );
-}
-
-static void
-emit_rsqrt(
-   struct x86_function *func,
-   unsigned xmm_dst,
-   unsigned xmm_src )
-{
-#if HIGH_PRECISION
-   /* Although rsqrtps() and rcpps() are low precision on some/all SSE
-    * implementations, it is possible to improve its precision at
-    * fairly low cost, using a newton/raphson step, as below:
-    * 
-    * x1 = 2 * rcpps(a) - a * rcpps(a) * rcpps(a)
-    * x1 = 0.5 * rsqrtps(a) * [3.0 - (a * rsqrtps(a))* rsqrtps(a)]
-    *
-    * See: http://softwarecommunity.intel.com/articles/eng/1818.htm
-    */
-   {
-      struct x86_reg dst = make_xmm( xmm_dst );
-      struct x86_reg src = make_xmm( xmm_src );
-      struct x86_reg tmp0 = make_xmm( 2 );
-      struct x86_reg tmp1 = make_xmm( 3 );
-
-      assert( xmm_dst != xmm_src );
-      assert( xmm_dst != 2 && xmm_dst != 3 );
-      assert( xmm_src != 2 && xmm_src != 3 );
-
-      sse_movaps(  func, dst,  get_temp( TGSI_EXEC_TEMP_HALF_I, TGSI_EXEC_TEMP_HALF_C ) );
-      sse_movaps(  func, tmp0, get_temp( TGSI_EXEC_TEMP_THREE_I, TGSI_EXEC_TEMP_THREE_C ) );
-      sse_rsqrtps( func, tmp1, src  );
-      sse_mulps(   func, src,  tmp1 );
-      sse_mulps(   func, dst,  tmp1 );
-      sse_mulps(   func, src,  tmp1 );
-      sse_subps(   func, tmp0, src  );
-      sse_mulps(   func, dst,  tmp0 );
-   }
-#else
-   /* On Intel CPUs at least, this is only accurate to 12 bits -- not
-    * good enough.
-    */
-   sse_rsqrtps(
-      func,
-      make_xmm( xmm_dst ),
-      make_xmm( xmm_src ) );
-#endif
-}
-
-static void
-emit_setsign(
-   struct x86_function *func,
-   unsigned xmm )
-{
-   sse_orps(
-      func,
-      make_xmm( xmm ),
-      get_temp(
-         TGSI_EXEC_TEMP_80000000_I,
-         TGSI_EXEC_TEMP_80000000_C ) );
-}
-
-static void PIPE_CDECL
-sin4f(
-   float *store )
-{
-   store[0] = sinf( store[0] );
-   store[1] = sinf( store[1] );
-   store[2] = sinf( store[2] );
-   store[3] = sinf( store[3] );
-}
-
-static void
-emit_sin (struct x86_function *func,
-          unsigned xmm_save, 
-          unsigned xmm_dst)
-{
-   emit_func_call_dst(
-      func,
-      xmm_save,
-      xmm_dst,
-      sin4f );
-}
-
-static void
-emit_sub(
-   struct x86_function *func,
-   unsigned xmm_dst,
-   unsigned xmm_src )
-{
-   sse_subps(
-      func,
-      make_xmm( xmm_dst ),
-      make_xmm( xmm_src ) );
-}
-#endif
-
-
 /**
  * Return index of vector register containing {1.0, 1.0, 1.0, 1.0}.
  */
@@ -1263,177 +288,6 @@ emit_store(struct gen_context *gen,
 
 
 
-#if 000
-/**
- * High-level instruction translators.
- */
-
-static void
-emit_kil(
-   struct x86_function *func,
-   const struct tgsi_full_src_register *reg )
-{
-   unsigned uniquemask;
-   unsigned registers[4];
-   unsigned nextregister = 0;
-   unsigned firstchan = ~0;
-   unsigned chan_index;
-
-   /* This mask stores component bits that were already tested. Note that
-    * we test if the value is less than zero, so 1.0 and 0.0 need not to be
-    * tested. */
-   uniquemask = (1 << TGSI_EXTSWIZZLE_ZERO) | (1 << TGSI_EXTSWIZZLE_ONE);
-
-   FOR_EACH_CHANNEL( chan_index ) {
-      unsigned swizzle;
-
-      /* unswizzle channel */
-      swizzle = tgsi_util_get_full_src_register_extswizzle(
-         reg,
-         chan_index );
-
-      /* check if the component has not been already tested */
-      if( !(uniquemask & (1 << swizzle)) ) {
-         uniquemask |= 1 << swizzle;
-
-         /* allocate register */
-         registers[chan_index] = nextregister;
-         emit_fetch(
-            func,
-            nextregister,
-            reg,
-            chan_index );
-         nextregister++;
-
-         /* mark the first channel used */
-         if( firstchan == ~0 ) {
-            firstchan = chan_index;
-         }
-      }
-   }
-
-   x86_push(
-      func,
-      x86_make_reg( file_REG32, reg_AX ) );
-   x86_push(
-      func,
-      x86_make_reg( file_REG32, reg_DX ) );
-
-   FOR_EACH_CHANNEL( chan_index ) {
-      if( uniquemask & (1 << chan_index) ) {
-         sse_cmpps(
-            func,
-            make_xmm( registers[chan_index] ),
-            get_temp(
-               TGSI_EXEC_TEMP_00000000_I,
-               TGSI_EXEC_TEMP_00000000_C ),
-            cc_LessThan );
-
-         if( chan_index == firstchan ) {
-            sse_pmovmskb(
-               func,
-               x86_make_reg( file_REG32, reg_AX ),
-               make_xmm( registers[chan_index] ) );
-         }
-         else {
-            sse_pmovmskb(
-               func,
-               x86_make_reg( file_REG32, reg_DX ),
-               make_xmm( registers[chan_index] ) );
-            x86_or(
-               func,
-               x86_make_reg( file_REG32, reg_AX ),
-               x86_make_reg( file_REG32, reg_DX ) );
-         }
-      }
-   }
-
-   x86_or(
-      func,
-      get_temp(
-         TGSI_EXEC_TEMP_KILMASK_I,
-         TGSI_EXEC_TEMP_KILMASK_C ),
-      x86_make_reg( file_REG32, reg_AX ) );
-
-   x86_pop(
-      func,
-      x86_make_reg( file_REG32, reg_DX ) );
-   x86_pop(
-      func,
-      x86_make_reg( file_REG32, reg_AX ) );
-}
-
-
-static void
-emit_kilp(
-   struct x86_function *func )
-{
-   /* XXX todo / fix me */
-}
-
-
-static void
-emit_setcc(
-   struct x86_function *func,
-   struct tgsi_full_instruction *inst,
-   enum sse_cc cc )
-{
-   unsigned chan_index;
-
-   FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-      FETCH( func, *inst, 0, 0, chan_index );
-      FETCH( func, *inst, 1, 1, chan_index );
-      sse_cmpps(
-         func,
-         make_xmm( 0 ),
-         make_xmm( 1 ),
-         cc );
-      sse_andps(
-         func,
-         make_xmm( 0 ),
-         get_temp(
-            TEMP_ONE_I,
-            TEMP_ONE_C ) );
-      STORE( func, *inst, 0, 0, chan_index );
-   }
-}
-
-static void
-emit_cmp(
-   struct x86_function *func,
-   struct tgsi_full_instruction *inst )
-{
-   unsigned chan_index;
-
-   FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-      FETCH( func, *inst, 0, 0, chan_index );
-      FETCH( func, *inst, 1, 1, chan_index );
-      FETCH( func, *inst, 2, 2, chan_index );
-      sse_cmpps(
-         func,
-         make_xmm( 0 ),
-         get_temp(
-            TGSI_EXEC_TEMP_00000000_I,
-            TGSI_EXEC_TEMP_00000000_C ),
-         cc_LessThan );
-      sse_andps(
-         func,
-         make_xmm( 1 ),
-         make_xmm( 0 ) );
-      sse_andnps(
-         func,
-         make_xmm( 0 ),
-         make_xmm( 2 ) );
-      sse_orps(
-         func,
-         make_xmm( 0 ),
-         make_xmm( 1 ) );
-      STORE( func, *inst, 0, 0, chan_index );
-   }
-}
-#endif
-
-
 static void
 emit_scalar_unaryop(struct gen_context *gen, struct tgsi_full_instruction *inst)
 {
@@ -1742,805 +596,6 @@ emit_instruction(struct gen_context *gen,
       return 0;
    }
 
-#if 0
-   unsigned chan_index;
-
-   switch (inst->Instruction.Opcode) {
-   case TGSI_OPCODE_ARL:
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         emit_f2it( func, 0 );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_MOV:
-   case TGSI_OPCODE_SWZ:
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_LIT:
-      if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W ) ) {
-         emit_tempf(
-            func,
-            0,
-            TEMP_ONE_I,
-            TEMP_ONE_C);
-         if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ) {
-            STORE( func, *inst, 0, 0, CHAN_X );
-         }
-         if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W ) ) {
-            STORE( func, *inst, 0, 0, CHAN_W );
-         }
-      }
-      if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) ) {
-         if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ) {
-            FETCH( func, *inst, 0, 0, CHAN_X );
-            sse_maxps(
-               func,
-               make_xmm( 0 ),
-               get_temp(
-                  TGSI_EXEC_TEMP_00000000_I,
-                  TGSI_EXEC_TEMP_00000000_C ) );
-            STORE( func, *inst, 0, 0, CHAN_Y );
-         }
-         if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) ) {
-            /* XMM[1] = SrcReg[0].yyyy */
-            FETCH( func, *inst, 1, 0, CHAN_Y );
-            /* XMM[1] = max(XMM[1], 0) */
-            sse_maxps(
-               func,
-               make_xmm( 1 ),
-               get_temp(
-                  TGSI_EXEC_TEMP_00000000_I,
-                  TGSI_EXEC_TEMP_00000000_C ) );
-            /* XMM[2] = SrcReg[0].wwww */
-            FETCH( func, *inst, 2, 0, CHAN_W );
-            /* XMM[2] = min(XMM[2], 128.0) */
-            sse_minps(
-               func,
-               make_xmm( 2 ),
-               get_temp(
-                  TGSI_EXEC_TEMP_128_I,
-                  TGSI_EXEC_TEMP_128_C ) );
-            /* XMM[2] = max(XMM[2], -128.0) */
-            sse_maxps(
-               func,
-               make_xmm( 2 ),
-               get_temp(
-                  TGSI_EXEC_TEMP_MINUS_128_I,
-                  TGSI_EXEC_TEMP_MINUS_128_C ) );
-            emit_pow( func, 3, 1, 2 );
-            FETCH( func, *inst, 0, 0, CHAN_X );
-            sse_xorps(
-               func,
-               make_xmm( 2 ),
-               make_xmm( 2 ) );
-            sse_cmpps(
-               func,
-               make_xmm( 2 ),
-               make_xmm( 0 ),
-               cc_LessThanEqual );
-            sse_andps(
-               func,
-               make_xmm( 2 ),
-               make_xmm( 1 ) );
-            STORE( func, *inst, 2, 0, CHAN_Z );
-         }
-      }
-      break;
-
-   case TGSI_OPCODE_RCP:
-   /* TGSI_OPCODE_RECIP */
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      emit_rcp( func, 0, 0 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_RSQ:
-   /* TGSI_OPCODE_RECIPSQRT */
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      emit_rsqrt( func, 1, 0 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 1, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_EXP:
-      if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z )) {
-         FETCH( func, *inst, 0, 0, CHAN_X );
-         if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
-             IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y )) {
-            emit_MOV( func, 1, 0 );
-            emit_flr( func, 2, 1 );
-            /* dst.x = ex2(floor(src.x)) */
-            if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X )) {
-               emit_MOV( func, 2, 1 );
-               emit_ex2( func, 3, 2 );
-               STORE( func, *inst, 2, 0, CHAN_X );
-            }
-            /* dst.y = src.x - floor(src.x) */
-            if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y )) {
-               emit_MOV( func, 2, 0 );
-               emit_sub( func, 2, 1 );
-               STORE( func, *inst, 2, 0, CHAN_Y );
-            }
-         }
-         /* dst.z = ex2(src.x) */
-         if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z )) {
-            emit_ex2( func, 3, 0 );
-            STORE( func, *inst, 0, 0, CHAN_Z );
-         }
-      }
-      /* dst.w = 1.0 */
-      if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W )) {
-         emit_tempf( func, 0, TEMP_ONE_I, TEMP_ONE_C );
-         STORE( func, *inst, 0, 0, CHAN_W );
-      }
-      break;
-
-   case TGSI_OPCODE_LOG:
-      if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z )) {
-         FETCH( func, *inst, 0, 0, CHAN_X );
-         emit_abs( func, 0 );
-         emit_MOV( func, 1, 0 );
-         emit_lg2( func, 2, 1 );
-         /* dst.z = lg2(abs(src.x)) */
-         if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z )) {
-            STORE( func, *inst, 1, 0, CHAN_Z );
-         }
-         if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
-             IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y )) {
-            emit_flr( func, 2, 1 );
-            /* dst.x = floor(lg2(abs(src.x))) */
-            if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X )) {
-               STORE( func, *inst, 1, 0, CHAN_X );
-            }
-            /* dst.x = abs(src)/ex2(floor(lg2(abs(src.x)))) */
-            if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y )) {
-               emit_ex2( func, 2, 1 );
-               emit_rcp( func, 1, 1 );
-               emit_mul( func, 0, 1 );
-               STORE( func, *inst, 0, 0, CHAN_Y );
-            }
-         }
-      }
-      /* dst.w = 1.0 */
-      if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W )) {
-         emit_tempf( func, 0, TEMP_ONE_I, TEMP_ONE_C );
-         STORE( func, *inst, 0, 0, CHAN_W );
-      }
-      break;
-
-   case TGSI_OPCODE_MUL:
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         FETCH( func, *inst, 1, 1, chan_index );
-         emit_mul( func, 0, 1 );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_ADD:
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         FETCH( func, *inst, 1, 1, chan_index );
-         emit_add( func, 0, 1 );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_DP3:
-   /* TGSI_OPCODE_DOT3 */
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      FETCH( func, *inst, 1, 1, CHAN_X );
-      emit_mul( func, 0, 1 );
-      FETCH( func, *inst, 1, 0, CHAN_Y );
-      FETCH( func, *inst, 2, 1, CHAN_Y );
-      emit_mul( func, 1, 2 );
-      emit_add( func, 0, 1 );
-      FETCH( func, *inst, 1, 0, CHAN_Z );
-      FETCH( func, *inst, 2, 1, CHAN_Z );
-      emit_mul( func, 1, 2 );
-      emit_add( func, 0, 1 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_DP4:
-   /* TGSI_OPCODE_DOT4 */
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      FETCH( func, *inst, 1, 1, CHAN_X );
-      emit_mul( func, 0, 1 );
-      FETCH( func, *inst, 1, 0, CHAN_Y );
-      FETCH( func, *inst, 2, 1, CHAN_Y );
-      emit_mul( func, 1, 2 );
-      emit_add( func, 0, 1 );
-      FETCH( func, *inst, 1, 0, CHAN_Z );
-      FETCH( func, *inst, 2, 1, CHAN_Z );
-      emit_mul(func, 1, 2 );
-      emit_add(func, 0, 1 );
-      FETCH( func, *inst, 1, 0, CHAN_W );
-      FETCH( func, *inst, 2, 1, CHAN_W );
-      emit_mul( func, 1, 2 );
-      emit_add( func, 0, 1 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_DST:
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) {
-         emit_tempf(
-            func,
-            0,
-            TEMP_ONE_I,
-            TEMP_ONE_C );
-         STORE( func, *inst, 0, 0, CHAN_X );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) {
-         FETCH( func, *inst, 0, 0, CHAN_Y );
-         FETCH( func, *inst, 1, 1, CHAN_Y );
-         emit_mul( func, 0, 1 );
-         STORE( func, *inst, 0, 0, CHAN_Y );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) {
-         FETCH( func, *inst, 0, 0, CHAN_Z );
-         STORE( func, *inst, 0, 0, CHAN_Z );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W ) {
-         FETCH( func, *inst, 0, 1, CHAN_W );
-         STORE( func, *inst, 0, 0, CHAN_W );
-      }
-      break;
-
-   case TGSI_OPCODE_MIN:
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         FETCH( func, *inst, 1, 1, chan_index );
-         sse_minps(
-            func,
-            make_xmm( 0 ),
-            make_xmm( 1 ) );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_MAX:
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         FETCH( func, *inst, 1, 1, chan_index );
-         sse_maxps(
-            func,
-            make_xmm( 0 ),
-            make_xmm( 1 ) );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_SLT:
-   /* TGSI_OPCODE_SETLT */
-      emit_setcc( func, inst, cc_LessThan );
-      break;
-
-   case TGSI_OPCODE_SGE:
-   /* TGSI_OPCODE_SETGE */
-      emit_setcc( func, inst, cc_NotLessThan );
-      break;
-
-   case TGSI_OPCODE_MAD:
-   /* TGSI_OPCODE_MADD */
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         FETCH( func, *inst, 1, 1, chan_index );
-         FETCH( func, *inst, 2, 2, chan_index );
-         emit_mul( func, 0, 1 );
-         emit_add( func, 0, 2 );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_SUB:
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         FETCH( func, *inst, 1, 1, chan_index );
-         emit_sub( func, 0, 1 );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_LERP:
-   /* TGSI_OPCODE_LRP */
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         FETCH( func, *inst, 1, 1, chan_index );
-         FETCH( func, *inst, 2, 2, chan_index );
-         emit_sub( func, 1, 2 );
-         emit_mul( func, 0, 1 );
-         emit_add( func, 0, 2 );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_CND:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_CND0:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_DOT2ADD:
-   /* TGSI_OPCODE_DP2A */
-      return 0;
-      break;
-
-   case TGSI_OPCODE_INDEX:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_NEGATE:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_FRAC:
-   /* TGSI_OPCODE_FRC */
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         emit_frc( func, 0, 0 );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_CLAMP:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_FLOOR:
-   /* TGSI_OPCODE_FLR */
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         emit_flr( func, 0, 0 );
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_ROUND:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_EXPBASE2:
-   /* TGSI_OPCODE_EX2 */
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      emit_ex2( func, 0, 0 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_LOGBASE2:
-   /* TGSI_OPCODE_LG2 */
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      emit_lg2( func, 0, 0 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_POWER:
-   /* TGSI_OPCODE_POW */
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      FETCH( func, *inst, 1, 1, CHAN_X );
-      emit_pow( func, 0, 0, 1 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_CROSSPRODUCT:
-   /* TGSI_OPCODE_XPD */
-      if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ) {
-         FETCH( func, *inst, 1, 1, CHAN_Z );
-         FETCH( func, *inst, 3, 0, CHAN_Z );
-      }
-      if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) ) {
-         FETCH( func, *inst, 0, 0, CHAN_Y );
-         FETCH( func, *inst, 4, 1, CHAN_Y );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) {
-         emit_MOV( func, 2, 0 );
-         emit_mul( func, 2, 1 );
-         emit_MOV( func, 5, 3 );
-         emit_mul( func, 5, 4 );
-         emit_sub( func, 2, 5 );
-         STORE( func, *inst, 2, 0, CHAN_X );
-      }
-      if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ||
-          IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) ) {
-         FETCH( func, *inst, 2, 1, CHAN_X );
-         FETCH( func, *inst, 5, 0, CHAN_X );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) {
-         emit_mul( func, 3, 2 );
-         emit_mul( func, 1, 5 );
-         emit_sub( func, 3, 1 );
-         STORE( func, *inst, 3, 0, CHAN_Y );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) {
-         emit_mul( func, 5, 4 );
-         emit_mul( func, 0, 2 );
-         emit_sub( func, 5, 0 );
-         STORE( func, *inst, 5, 0, CHAN_Z );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W ) {
-	 emit_tempf(
-	    func,
-	    0,
-	    TEMP_ONE_I,
-	    TEMP_ONE_C );
-         STORE( func, *inst, 0, 0, CHAN_W );
-      }
-      break;
-
-   case TGSI_OPCODE_MULTIPLYMATRIX:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_ABS:
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         FETCH( func, *inst, 0, 0, chan_index );
-         emit_abs( func, 0) ;
-
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_RCC:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_DPH:
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      FETCH( func, *inst, 1, 1, CHAN_X );
-      emit_mul( func, 0, 1 );
-      FETCH( func, *inst, 1, 0, CHAN_Y );
-      FETCH( func, *inst, 2, 1, CHAN_Y );
-      emit_mul( func, 1, 2 );
-      emit_add( func, 0, 1 );
-      FETCH( func, *inst, 1, 0, CHAN_Z );
-      FETCH( func, *inst, 2, 1, CHAN_Z );
-      emit_mul( func, 1, 2 );
-      emit_add( func, 0, 1 );
-      FETCH( func, *inst, 1, 1, CHAN_W );
-      emit_add( func, 0, 1 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_COS:
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      emit_cos( func, 0, 0 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_DDX:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_DDY:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_KILP:
-      /* predicated kill */
-      emit_kilp( func );
-      return 0; /* XXX fix me */
-      break;
-
-   case TGSI_OPCODE_KIL:
-      /* conditional kill */
-      emit_kil( func, &inst->FullSrcRegisters[0] );
-      break;
-
-   case TGSI_OPCODE_PK2H:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_PK2US:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_PK4B:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_PK4UB:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_RFL:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_SEQ:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_SFL:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_SGT:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_SIN:
-      FETCH( func, *inst, 0, 0, CHAN_X );
-      emit_sin( func, 0, 0 );
-      FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-         STORE( func, *inst, 0, 0, chan_index );
-      }
-      break;
-
-   case TGSI_OPCODE_SLE:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_SNE:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_STR:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_TEX:
-      if (0) {
-	 /* Disable dummy texture code: 
-	  */
-	 emit_tempf(
-	    func,
-	    0,
-	    TEMP_ONE_I,
-	    TEMP_ONE_C );
-	 FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
-	    STORE( func, *inst, 0, 0, chan_index );
-	 }
-      }
-      else {
-	 return 0;
-      }
-      break;
-
-   case TGSI_OPCODE_TXD:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_UP2H:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_UP2US:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_UP4B:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_UP4UB:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_X2D:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_ARA:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_ARR:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_BRA:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_CAL:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_RET:
-      emit_ret( func );
-      break;
-
-   case TGSI_OPCODE_END:
-      break;
-
-   case TGSI_OPCODE_SSG:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_CMP:
-      emit_cmp (func, inst);
-      break;
-
-   case TGSI_OPCODE_SCS:
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) {
-         FETCH( func, *inst, 0, 0, CHAN_X );
-         emit_cos( func, 0, 0 );
-         STORE( func, *inst, 0, 0, CHAN_X );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) {
-         FETCH( func, *inst, 0, 0, CHAN_X );
-         emit_sin( func, 0, 0 );
-         STORE( func, *inst, 0, 0, CHAN_Y );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) {
-	 emit_tempf(
-	    func,
-	    0,
-	    TGSI_EXEC_TEMP_00000000_I,
-	    TGSI_EXEC_TEMP_00000000_C );
-         STORE( func, *inst, 0, 0, CHAN_Z );
-      }
-      IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W ) {
-	 emit_tempf(
-	    func,
-	    0,
-	    TEMP_ONE_I,
-	    TEMP_ONE_C );
-         STORE( func, *inst, 0, 0, CHAN_W );
-      }
-      break;
-
-   case TGSI_OPCODE_TXB:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_NRM:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_DIV:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_DP2:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_TXL:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_BRK:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_IF:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_LOOP:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_REP:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_ELSE:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_ENDIF:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_ENDLOOP:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_ENDREP:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_PUSHA:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_POPA:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_CEIL:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_I2F:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_NOT:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_TRUNC:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_SHL:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_SHR:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_AND:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_OR:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_MOD:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_XOR:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_SAD:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_TXF:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_TXQ:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_CONT:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_EMIT:
-      return 0;
-      break;
-
-   case TGSI_OPCODE_ENDPRIM:
-      return 0;
-      break;
-
-   default:
-      return 0;
-   }
-#endif
    
    return 1;
 }
@@ -2608,133 +663,6 @@ emit_declaration(
    }
 }
 
-#if 0
-static void aos_to_soa( struct x86_function *func, 
-                        uint arg_aos,
-                        uint arg_soa, 
-                        uint arg_num, 
-                        uint arg_stride )
-{
-   struct x86_reg soa_input = x86_make_reg( file_REG32, reg_AX );
-   struct x86_reg aos_input = x86_make_reg( file_REG32, reg_BX );
-   struct x86_reg num_inputs = x86_make_reg( file_REG32, reg_CX );
-   struct x86_reg stride = x86_make_reg( file_REG32, reg_DX );
-   int inner_loop;
-
-
-   /* Save EBX */
-   x86_push( func, x86_make_reg( file_REG32, reg_BX ) );
-
-   x86_mov( func, aos_input,  x86_fn_arg( func, arg_aos ) );
-   x86_mov( func, soa_input,  x86_fn_arg( func, arg_soa ) );
-   x86_mov( func, num_inputs, x86_fn_arg( func, arg_num ) );
-   x86_mov( func, stride,     x86_fn_arg( func, arg_stride ) );
-
-   /* do */
-   inner_loop = x86_get_label( func );
-   {
-      x86_push( func, aos_input );
-      sse_movlps( func, make_xmm( 0 ), x86_make_disp( aos_input, 0 ) );
-      sse_movlps( func, make_xmm( 3 ), x86_make_disp( aos_input, 8 ) );
-      x86_add( func, aos_input, stride );
-      sse_movhps( func, make_xmm( 0 ), x86_make_disp( aos_input, 0 ) );
-      sse_movhps( func, make_xmm( 3 ), x86_make_disp( aos_input, 8 ) );
-      x86_add( func, aos_input, stride );
-      sse_movlps( func, make_xmm( 1 ), x86_make_disp( aos_input, 0 ) );
-      sse_movlps( func, make_xmm( 4 ), x86_make_disp( aos_input, 8 ) );
-      x86_add( func, aos_input, stride );
-      sse_movhps( func, make_xmm( 1 ), x86_make_disp( aos_input, 0 ) );
-      sse_movhps( func, make_xmm( 4 ), x86_make_disp( aos_input, 8 ) );
-      x86_pop( func, aos_input );
-
-      sse_movaps( func, make_xmm( 2 ), make_xmm( 0 ) );
-      sse_movaps( func, make_xmm( 5 ), make_xmm( 3 ) );
-      sse_shufps( func, make_xmm( 0 ), make_xmm( 1 ), 0x88 );
-      sse_shufps( func, make_xmm( 2 ), make_xmm( 1 ), 0xdd );
-      sse_shufps( func, make_xmm( 3 ), make_xmm( 4 ), 0x88 );
-      sse_shufps( func, make_xmm( 5 ), make_xmm( 4 ), 0xdd );
-
-      sse_movups( func, x86_make_disp( soa_input, 0 ), make_xmm( 0 ) );
-      sse_movups( func, x86_make_disp( soa_input, 16 ), make_xmm( 2 ) );
-      sse_movups( func, x86_make_disp( soa_input, 32 ), make_xmm( 3 ) );
-      sse_movups( func, x86_make_disp( soa_input, 48 ), make_xmm( 5 ) );
-
-      /* Advance to next input */
-      x86_lea( func, aos_input, x86_make_disp(aos_input, 16) );
-      x86_lea( func, soa_input, x86_make_disp(soa_input, 64) );
-   }
-   /* while --num_inputs */
-   x86_dec( func, num_inputs );
-   x86_jcc( func, cc_NE, inner_loop );
-
-   /* Restore EBX */
-   x86_pop( func, aos_input );
-}
-#endif
-
-#if 0
-static void soa_to_aos( struct x86_function *func, uint aos, uint soa, uint num, uint stride )
-{
-   struct x86_reg soa_output;
-   struct x86_reg aos_output;
-   struct x86_reg num_outputs;
-   struct x86_reg temp;
-   int inner_loop;
-
-   soa_output = x86_make_reg( file_REG32, reg_AX );
-   aos_output = x86_make_reg( file_REG32, reg_BX );
-   num_outputs = x86_make_reg( file_REG32, reg_CX );
-   temp = x86_make_reg( file_REG32, reg_DX );
-
-   /* Save EBX */
-   x86_push( func, aos_output );
-
-   x86_mov( func, soa_output, x86_fn_arg( func, soa ) );
-   x86_mov( func, aos_output, x86_fn_arg( func, aos ) );
-   x86_mov( func, num_outputs, x86_fn_arg( func, num ) );
-
-   /* do */
-   inner_loop = x86_get_label( func );
-   {
-      sse_movups( func, make_xmm( 0 ), x86_make_disp( soa_output, 0 ) );
-      sse_movups( func, make_xmm( 1 ), x86_make_disp( soa_output, 16 ) );
-      sse_movups( func, make_xmm( 3 ), x86_make_disp( soa_output, 32 ) );
-      sse_movups( func, make_xmm( 4 ), x86_make_disp( soa_output, 48 ) );
-
-      sse_movaps( func, make_xmm( 2 ), make_xmm( 0 ) );
-      sse_movaps( func, make_xmm( 5 ), make_xmm( 3 ) );
-      sse_unpcklps( func, make_xmm( 0 ), make_xmm( 1 ) );
-      sse_unpckhps( func, make_xmm( 2 ), make_xmm( 1 ) );
-      sse_unpcklps( func, make_xmm( 3 ), make_xmm( 4 ) );
-      sse_unpckhps( func, make_xmm( 5 ), make_xmm( 4 ) );
-
-      x86_mov( func, temp, x86_fn_arg( func, stride ) );
-      x86_push( func, aos_output );
-      sse_movlps( func, x86_make_disp( aos_output, 0 ), make_xmm( 0 ) );
-      sse_movlps( func, x86_make_disp( aos_output, 8 ), make_xmm( 3 ) );
-      x86_add( func, aos_output, temp );
-      sse_movhps( func, x86_make_disp( aos_output, 0 ), make_xmm( 0 ) );
-      sse_movhps( func, x86_make_disp( aos_output, 8 ), make_xmm( 3 ) );
-      x86_add( func, aos_output, temp );
-      sse_movlps( func, x86_make_disp( aos_output, 0 ), make_xmm( 2 ) );
-      sse_movlps( func, x86_make_disp( aos_output, 8 ), make_xmm( 5 ) );
-      x86_add( func, aos_output, temp );
-      sse_movhps( func, x86_make_disp( aos_output, 0 ), make_xmm( 2 ) );
-      sse_movhps( func, x86_make_disp( aos_output, 8 ), make_xmm( 5 ) );
-      x86_pop( func, aos_output );
-
-      /* Advance to next output */
-      x86_lea( func, aos_output, x86_make_disp(aos_output, 16) );
-      x86_lea( func, soa_output, x86_make_disp(soa_output, 64) );
-   }
-   /* while --num_outputs */
-   x86_dec( func, num_outputs );
-   x86_jcc( func, cc_NE, inner_loop );
-
-   /* Restore EBX */
-   x86_pop( func, aos_output );
-}
-#endif
 
 
 static void
@@ -2788,67 +716,6 @@ tgsi_emit_ppc(const struct tgsi_token *tokens,
 
    emit_prologue(func);
 
-   /*
-    * Different function args for vertex/fragment shaders:
-    */
-#if 0
-   if (parse.FullHeader.Processor.Processor == TGSI_PROCESSOR_FRAGMENT) {
-      /* DECLARATION phase, do not load output argument. */
-      x86_mov(
-         func,
-         get_input_base(),
-         x86_fn_arg( func, 1 ) );
-      /* skipping outputs argument here */
-      x86_mov(
-         func,
-         get_const_base(),
-         x86_fn_arg( func, 3 ) );
-      x86_mov(
-         func,
-         get_temp_base(),
-         x86_fn_arg( func, 4 ) );
-      x86_mov(
-         func,
-         get_coef_base(),
-         x86_fn_arg( func, 5 ) );
-      x86_mov(
-         func,
-         get_immediate_base(),
-         x86_fn_arg( func, 6 ) );
-   }
-   else {
-      assert(parse.FullHeader.Processor.Processor == TGSI_PROCESSOR_VERTEX);
-
-      if (do_swizzles)
-         aos_to_soa( func, 
-                     6,         /* aos_input */
-                     1,         /* machine->input */
-                     7,         /* num_inputs */
-                     8 );       /* input_stride */
-
-      x86_mov(
-         func,
-         get_input_base(),
-         x86_fn_arg( func, 1 ) );
-      x86_mov(
-         func,
-         get_output_base(),
-         x86_fn_arg( func, 2 ) );
-      x86_mov(
-         func,
-         get_const_base(),
-         x86_fn_arg( func, 3 ) );
-      x86_mov(
-         func,
-         get_temp_base(),
-         x86_fn_arg( func, 4 ) );
-      x86_mov(
-         func,
-         get_immediate_base(),
-         x86_fn_arg( func, 5 ) );
-   }
-#endif
-
    while (!tgsi_parse_end_of_tokens(&parse) && ok) {
       tgsi_parse_token(&parse);
 
@@ -2860,19 +727,6 @@ tgsi_emit_ppc(const struct tgsi_token *tokens,
          break;
 
       case TGSI_TOKEN_TYPE_INSTRUCTION:
-         if (parse.FullHeader.Processor.Processor == TGSI_PROCESSOR_FRAGMENT) {
-#if 0
-            if( !instruction_phase ) {
-               /* INSTRUCTION phase, overwrite coeff with output. */
-               instruction_phase = TRUE;
-               x86_mov(
-                  func,
-                  get_output_base(),
-                  x86_fn_arg( func, 2 ) );
-            }
-#endif
-         }
-
          ok = emit_instruction(&gen, &parse.FullToken.FullInstruction);
 
 	 if (!ok) {
@@ -2909,13 +763,6 @@ tgsi_emit_ppc(const struct tgsi_token *tokens,
       }
    }
 
-#if 0
-   if (parse.FullHeader.Processor.Processor == TGSI_PROCESSOR_VERTEX) {
-      if (do_swizzles)
-         soa_to_aos( func, 9, 2, 10, 11 );
-   }
-#endif
-
    emit_epilogue(func);
 
    tgsi_parse_free( &parse );