re PR target/79494 (ICE in maybe_record_trace_start, at dwarf2cfi.c:2330)

	PR target/79494
	* config/i386/i386.c (ix86_expand_split_stack_prologue): Call
	make_reg_eh_region_note_nothrow_nononlocal on call_insn.
	* config/rs6000/rs6000.c: Include except.h.
	(rs6000_expand_split_stack_prologue): Call
	make_reg_eh_region_note_nothrow_nononlocal on the call insn.

	* gcc.dg/pr79494.c: New test.

From-SVN: r245629

gcc/ChangeLog

+2017-02-21  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/79494
+	* config/i386/i386.c (ix86_expand_split_stack_prologue): Call
+	make_reg_eh_region_note_nothrow_nononlocal on call_insn.
+	* config/rs6000/rs6000.c: Include except.h.
+	(rs6000_expand_split_stack_prologue): Call
+	make_reg_eh_region_note_nothrow_nononlocal on the call insn.
+
 2017-02-21  Martin Jambor  <mjambor@suse.cz>
 
 	PR lto/79579

gcc/config/i386/i386.c

@@ -15057,6 +15057,8 @@ ix86_expand_split_stack_prologue (void)
   add_function_usage_to (call_insn, call_fusage);
   if (!TARGET_64BIT)
     add_reg_note (call_insn, REG_ARGS_SIZE, GEN_INT (0));
+  /* Indicate that this function can't jump to non-local gotos.  */
+  make_reg_eh_region_note_nothrow_nononlocal (as_a <rtx_insn *> (call_insn));
 
   /* In order to make call/return prediction work right, we now need
      to execute a return instruction.  See

gcc/config/rs6000/rs6000.c

@@ -66,6 +66,7 @@
 #include "builtins.h"
 #include "context.h"
 #include "tree-pass.h"
+#include "except.h"
 #if TARGET_XCOFF
 #include "xcoffout.h"  /* get declarations of xcoff_*_section_name */
 #endif
@@ -31680,6 +31681,8 @@ rs6000_expand_split_stack_prologue (void)
      split_stack_return use r0.  */
   use_reg (&call_fusage, r0);
   add_function_usage_to (insn, call_fusage);
+  /* Indicate that this function can't jump to non-local gotos.  */
+  make_reg_eh_region_note_nothrow_nononlocal (insn);
   emit_insn (gen_frame_load (r0, r1, info->lr_save_offset));
   insn = emit_move_insn (lr, r0);
   add_reg_note (insn, REG_CFA_RESTORE, lr);

gcc/testsuite/ChangeLog

+2017-02-21  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/79494
+	* gcc.dg/pr79494.c: New test.
+
 2017-02-21  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	* gcc.dg/plugin/diagnostic-test-expressions-1.c: Add -Wno-psabi

gcc/testsuite/gcc.dg/pr79494.c

+/* PR target/79494 */
+/* { dg-do compile } */
+/* { dg-require-effective-target split_stack } */
+/* { dg-options "-O2 -fsplit-stack -g" } */
+
+void
+foo (int a)
+{
+  __label__ lab;
+  __attribute__((noinline, noclone)) void bar (int b)
+  {
+    switch (b)
+      {
+      case 1:
+	goto lab;
+      case 2:
+	goto lab;
+      }
+  }
+  bar (a);
+lab:;
+}