re PR tree-optimization/90395 (ICE: verify_flow_info failed (error: BB 2 cannot…

re PR tree-optimization/90395 (ICE: verify_flow_info failed (error: BB 2 cannot throw but has an EH edge))

2019-05-09  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/90395
	* tree-ssa-forwprop.c (pass_forwprop::execute): Do not
	rewrite vector stores that throw internally.

	* gcc.dg/torture/pr90395.c: New testcase.

From-SVN: r271031

gcc/ChangeLog

+2019-05-09  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/90395
+	* tree-ssa-forwprop.c (pass_forwprop::execute): Do not
+	rewrite vector stores that throw internally.
+
 2019-05-09  Thomas Schwinge  <thomas@codesourcery.com>
 
 	* cif-code.def (CHKP): Remove.

gcc/testsuite/ChangeLog

+2019-05-09  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/90395
+	* gcc.dg/torture/pr90395.c: New testcase.
+
 2019-05-08  Cherry Zhang  <cherryyz@google.com>
 
 	* go.dg/cmpstring.go: New test.

gcc/testsuite/gcc.dg/torture/pr90395.c

+/* { dg-do compile } */
+/* { dg-additional-options "-fexceptions -fnon-call-exceptions" } */
+
+typedef int v16si __attribute__ ((__vector_size__ (64)));
+
+void
+rl (int uq)
+{
+  v16si qw[1];
+
+  qw[uq] = (v16si) { uq };
+}

gcc/tree-ssa-forwprop.c

@@ -2570,6 +2570,7 @@ pass_forwprop::execute (function *fun)
 	      if (single_imm_use (lhs, &use_p, &use_stmt)
 		  && gimple_store_p (use_stmt)
 		  && !gimple_has_volatile_ops (use_stmt)
+		  && !stmt_can_throw_internal (cfun, use_stmt)
 		  && is_gimple_assign (use_stmt)
 		  && (TREE_CODE (gimple_assign_lhs (use_stmt))
 		      != TARGET_MEM_REF))