diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6271933bd134..60f09e496314 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-05-27  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
+
+	PR tree-optimization/49170
+	* tree-ssa-math-opts.c (execute_cse_sincos):  Add checks for
+	sincos or cexp.
+	
 2011-05-27  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/49189
diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c
index cd601e3dd0cb..975ce9b1e5f2 100644
--- a/gcc/tree-ssa-math-opts.c
+++ b/gcc/tree-ssa-math-opts.c
@@ -1093,6 +1093,10 @@ execute_cse_sincos (void)
 		CASE_FLT_FN (BUILT_IN_COS):
 		CASE_FLT_FN (BUILT_IN_SIN):
 		CASE_FLT_FN (BUILT_IN_CEXPI):
+		  /* Make sure we have either sincos or cexp.  */
+		  if (!TARGET_HAS_SINCOS && !TARGET_C99_FUNCTIONS)
+		    break;
+
 		  arg = gimple_call_arg (stmt, 0);
 		  if (TREE_CODE (arg) == SSA_NAME)
 		    cfg_changed |= execute_cse_sincos_1 (arg);