re PR middle-end/37379 ([graphite] ICE compiling aermod.f90 with -ffast-math…

re PR middle-end/37379 ([graphite] ICE compiling aermod.f90 with -ffast-math -floop-block -O2 -fgraphite)

2008-11-07  Sebastian Pop  <sebastian.pop@amd.com>

	PR middle-end/37379
	* tree-scalar-evolution.c (instantiate_scev_1): Return
	chrec_dont_know for VL_EXP_CLASS_P.

From-SVN: r141682

gcc/ChangeLog

+2008-11-07  Sebastian Pop  <sebastian.pop@amd.com>
+
+	PR middle-end/37379
+	* tree-scalar-evolution.c (instantiate_scev_1): Return
+	chrec_dont_know for VL_EXP_CLASS_P.
+	
 2008-11-06  Uros Bizjak  <ubizjak@gmail.com>
 
 	* reg-stack.c (reg_to_stack): Add missing braces in memset

gcc/tree-scalar-evolution.c

@@ -2213,7 +2213,9 @@ instantiate_scev_1 (basic_block instantiate_below,
       break;
     }
 
-  gcc_assert (!VL_EXP_CLASS_P (chrec));
+  if (VL_EXP_CLASS_P (chrec))
+    return chrec_dont_know;
+
   switch (TREE_CODE_LENGTH (TREE_CODE (chrec)))
     {
     case 3: