re PR target/34091 (ICE in reload_cse_simplify_operands, at postreload.c:392)

	PR target/34091
	* gcc.c-torture/compile/pr34091.c: New test.

From-SVN: r130927

gcc/testsuite/ChangeLog

+2007-12-13  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	PR target/34091
+	* gcc.c-torture/compile/pr34091.c: New test.
+
 2007-12-13  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	* gcc.dg/uninit-13.c: UnXFAIL.

gcc/testsuite/gcc.c-torture/compile/pr34091.c

+typedef unsigned int GLenum;
+typedef unsigned char GLboolean;
+typedef int GLint;
+typedef unsigned short GLushort;
+typedef unsigned int GLuint;
+typedef float GLfloat;
+typedef GLushort GLchan;
+struct gl_texture_image;
+typedef struct __GLcontextRec GLcontext;
+typedef void (*FetchTexelFuncC) (const struct gl_texture_image * texImage,
+				 GLint col, GLint row, GLint img,
+				 GLchan * texelOut);
+struct gl_texture_format
+{
+};
+struct gl_texture_image
+{
+  GLenum _BaseFormat;
+  GLboolean _IsPowerOfTwo;
+  FetchTexelFuncC FetchTexelc;
+};
+struct gl_texture_object
+{
+  GLenum Target;
+  GLenum WrapS;
+  GLenum MinFilter;
+  GLenum MagFilter;
+  GLint BaseLevel;
+  GLint _MaxLevel;
+  struct gl_texture_image *Image[6][12];
+};
+enum _format
+{
+    MESA_FORMAT_RGBA_DXT3, MESA_FORMAT_RGBA_DXT5, MESA_FORMAT_RGBA,
+    MESA_FORMAT_RGB, MESA_FORMAT_ALPHA, MESA_FORMAT_LUMINANCE,
+};
+typedef void (*texture_sample_func) (GLcontext * ctx,
+				     const struct gl_texture_object * tObj,
+				     GLuint n, const GLfloat texcoords[][4],
+				     const GLfloat lambda[],
+				     GLchan rgba[][4]);
+lerp_2d (GLfloat a, GLfloat b, GLfloat v00, GLfloat v10, GLfloat v01,
+	 GLfloat v11)
+{
+  const GLfloat temp0 = ((v00) + (a) * ((v10) - (v00)));
+  const GLfloat temp1 = ((v01) + (a) * ((v11) - (v01)));
+  return ((temp0) + (b) * ((temp1) - (temp0)));
+}
+static __inline__ void
+lerp_rgba (GLchan result[4], GLfloat t, const GLchan a[4], const GLchan b[4])
+{
+  result[0] = (GLchan) (((a[0]) + (t) * ((b[0]) - (a[0]))) + 0.5);
+  result[1] = (GLchan) (((a[1]) + (t) * ((b[1]) - (a[1]))) + 0.5);
+  result[2] = (GLchan) (((a[2]) + (t) * ((b[2]) - (a[2]))) + 0.5);
+}
+static __inline__ void
+lerp_rgba_2d (GLchan result[4], GLfloat a, GLfloat b, const GLchan t00[4],
+	      const GLchan t10[4], const GLchan t01[4], const GLchan t11[4])
+{
+  result[0] = (GLchan) (lerp_2d (a, b, t00[0], t10[0], t01[0], t11[0]) + 0.5);
+  result[1] = (GLchan) (lerp_2d (a, b, t00[1], t10[1], t01[1], t11[1]) + 0.5);
+  result[2] = (GLchan) (lerp_2d (a, b, t00[2], t10[2], t01[2], t11[2]) + 0.5);
+}
+static __inline__ void
+sample_2d_linear_repeat (GLcontext * ctx,
+			 const struct gl_texture_object *tObj,
+			 const struct gl_texture_image *img,
+			 const GLfloat texcoord[4], GLchan rgba[])
+{
+  GLint i0, j0, i1, j1;
+  GLfloat a, b;
+  GLchan t00[4], t10[4], t01[4], t11[4];
+  {
+  };
+  img->FetchTexelc (img, i1, j1, 0, t11);
+  lerp_rgba_2d (rgba, a, b, t00, t10, t01, t11);
+}
+sample_2d_nearest_mipmap_linear (GLcontext * ctx,
+				 const struct gl_texture_object *tObj,
+				 GLuint n, const GLfloat texcoord[][4],
+				 const GLfloat lambda[], GLchan rgba[][4])
+{
+  GLuint i;
+  GLint level = linear_mipmap_level (tObj, lambda[i]);
+  sample_2d_nearest (ctx, tObj, tObj->Image[0][tObj->_MaxLevel], texcoord[i], rgba[i]);
+  GLchan t0[4], t1[4];
+  sample_2d_nearest (ctx, tObj, tObj->Image[0][level], texcoord[i], t0);
+  sample_2d_nearest (ctx, tObj, tObj->Image[0][level + 1], texcoord[i], t1);
+}
+static void
+sample_2d_linear_mipmap_linear_repeat (GLcontext * ctx,
+				       const struct gl_texture_object *tObj,
+				       GLuint n, const GLfloat texcoord[][4],
+				       const GLfloat lambda[],
+				       GLchan rgba[][4])
+{
+  GLuint i;
+  for (i = 0; i < n; i++)
+    {
+      GLint level = linear_mipmap_level (tObj, lambda[i]);
+      if (level >= tObj->_MaxLevel)
+	{
+	  GLchan t0[4], t1[4];
+	  const GLfloat f = ((lambda[i]) - ifloor (lambda[i]));
+	  sample_2d_linear_repeat (ctx, tObj, tObj->Image[0][level],
+				   texcoord[i], t0);
+	  sample_2d_linear_repeat (ctx, tObj, tObj->Image[0][level + 1],
+				   texcoord[i], t1);
+	  lerp_rgba (rgba[i], f, t0, t1);
+	}
+    }
+}
+static void
+sample_lambda_2d (GLcontext * ctx, const struct gl_texture_object *tObj,
+		  GLuint n, const GLfloat texcoords[][4],
+		  const GLfloat lambda[], GLchan rgba[][4])
+{
+  const struct gl_texture_image *tImg = tObj->Image[0][tObj->BaseLevel];
+  GLuint minStart, minEnd;
+  GLuint magStart, magEnd;
+  const GLboolean repeatNoBorderPOT = (tObj->WrapS == 0x2901)
+    && (tImg->_BaseFormat != 0x1900) && tImg->_IsPowerOfTwo;
+  compute_min_mag_ranges (tObj, n, lambda, &minStart, &minEnd, &magStart,
+			  &magEnd);
+  if (minStart < minEnd)
+    {
+      const GLuint m = minEnd - minStart;
+      switch (tObj->MinFilter)
+	{
+	case 0x2600:
+	  if (repeatNoBorderPOT)
+	    {
+		case MESA_FORMAT_RGB:
+		  opt_sample_rgb_2d (ctx, tObj, m, texcoords + minStart,
+				     ((void *) 0), rgba + minStart);
+		case MESA_FORMAT_RGBA:
+		  opt_sample_rgba_2d (ctx, tObj, m, texcoords + minStart,
+				      ((void *) 0), rgba + minStart);
+	    }
+	    {
+	      sample_nearest_2d (ctx, tObj, m, texcoords + minStart,
+				 ((void *) 0), rgba + minStart);
+	    }
+	  break;
+	  sample_2d_nearest_mipmap_linear (ctx, tObj, m, texcoords + minStart,
+					   lambda + minStart,
+					   rgba + minStart);
+	case 0x2703:
+	  if (repeatNoBorderPOT)
+	    sample_2d_linear_mipmap_linear_repeat (ctx, tObj, m,
+						   texcoords + minStart,
+						   lambda + minStart,
+						   rgba + minStart);
+	}
+      switch (tObj->MagFilter)
+	{
+		case MESA_FORMAT_RGB:
+		  opt_sample_rgb_2d (ctx, tObj, m, texcoords + magStart,
+				     ((void *) 0), rgba + magStart);
+		  opt_sample_rgba_2d (ctx, tObj, m, texcoords + magStart,
+				      ((void *) 0), rgba + magStart);
+                  sample_nearest_2d (ctx, tObj, m, texcoords + magStart,
+                                     ((void *) 0), rgba + magStart);
+	}
+    }
+}
+texture_sample_func
+_swrast_choose_texture_sample_func (const struct gl_texture_object *t)
+{
+      switch (t->Target)
+	{
+	case 0x0DE0:
+	      return &sample_lambda_2d;
+	}
+}