re PR tree-optimization/90211 (ICE: tree check: expected ssa_name, have real_cst…

re PR tree-optimization/90211 (ICE: tree check: expected ssa_name, have real_cst in first_readonly_imm_use, at ssa-iterators.h:351)

	PR tree-optimization/90211
	* tree-parloops.c (try_create_reduction_list): Ignore phi arguments
	which are not SSA_NAMEs.

	* gcc.dg/autopar/pr90211.c: New test.

From-SVN: r270533

gcc/ChangeLog

+2019-04-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/90211
+	* tree-parloops.c (try_create_reduction_list): Ignore phi arguments
+	which are not SSA_NAMEs.
+
 2018-04-23  Sudakshina Das  <sudi.das@arm.com>
 
 	* config/aarch64/aarch64-linux.h (TARGET_ASM_FILE_END): Define for
 	AArch64.
 	(aarch64_file_end_indicate_exec_stack): Add gnu note section.
 
-
 2019-04-23  Roman Zhuykov  <zhroma@ispras.ru>
 
 	PR rtl-optimization/87979

gcc/testsuite/ChangeLog

+2019-04-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/90211
+	* gcc.dg/autopar/pr90211.c: New test.
+
 2019-04-23  Iain Buclaw  <ibuclaw@gdcproject.org>
 	    Robin Dapp  <rdapp@linux.ibm.com>
 

gcc/testsuite/gcc.dg/autopar/pr90211.c

+/* PR tree-optimization/90211 */
+/* { dg-do compile } */
+/* { dg-require-effective-target pthread } */
+/* { dg-options "-O3 -fassociative-math -ftree-parallelize-loops=2 -fno-signed-zeros -fno-trapping-math -fno-tree-copy-prop" } */
+
+double
+foo (int x)
+{
+  double a, b = 0.0;
+  while (x < 3)
+    {
+      int c;
+      a = 0.0;
+      c = 0;
+      while (c < x)
+        {
+          a += 1.0;
+          ++c;
+        }
+      b += 1.0;
+      ++x;
+    }
+  return a + b;
+}

gcc/tree-parloops.c

@@ -2794,7 +2794,7 @@ try_create_reduction_list (loop_p loop,
       gimple *reduc_phi;
       tree val = PHI_ARG_DEF_FROM_EDGE (phi, exit);
 
-      if (!virtual_operand_p (val))
+      if (TREE_CODE (val) == SSA_NAME && !virtual_operand_p (val))
 	{
 	  if (dump_file && (dump_flags & TDF_DETAILS))
 	    {