From: Tom de Vries <tom@codesourcery.com>
Date: Mon, 25 Sep 2017 10:36:23 +0000 (+0000)
Subject: [nvptx] Add exit after call to noreturn function
X-Git-Tag: upstream/12.2.0~36757
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fb202364391854f7c16eee74c270b0d78ad8f532;p=platform%2Fupstream%2Fgcc.git

[nvptx] Add exit after call to noreturn function

2017-09-25  Tom de Vries  <tom@codesourcery.com>

	PR target/80035
	PR target/81069
	* config/nvptx/nvptx.c (nvptx_output_call_insn): Add exit after call to
	noreturn function.

From-SVN: r253145
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4967e98..8b379b7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2017-09-25  Tom de Vries  <tom@codesourcery.com>
+
+	PR target/80035
+	PR target/81069
+	* config/nvptx/nvptx.c (nvptx_output_call_insn): Add exit after call to
+	noreturn function.
+
 2017-09-25  Richard Biener  <rguenther@suse.de>
 
 	* graphite-optimize-isl.c (optimize_isl): Fail and dump if
diff --git a/gcc/config/nvptx/nvptx.c b/gcc/config/nvptx/nvptx.c
index 6cf9a66..634f660 100644
--- a/gcc/config/nvptx/nvptx.c
+++ b/gcc/config/nvptx/nvptx.c
@@ -2304,11 +2304,14 @@ nvptx_output_call_insn (rtx_insn *insn, rtx result, rtx callee)
   fprintf (asm_out_file, ";\n");
 
   if (find_reg_note (insn, REG_NORETURN, NULL))
-    /* No return functions confuse the PTX JIT, as it doesn't realize
-       the flow control barrier they imply.  It can seg fault if it
-       encounters what looks like an unexitable loop.  Emit a trailing
-       trap, which it does grok.  */
-    fprintf (asm_out_file, "\t\ttrap; // (noreturn)\n");
+    {
+      /* No return functions confuse the PTX JIT, as it doesn't realize
+	 the flow control barrier they imply.  It can seg fault if it
+	 encounters what looks like an unexitable loop.  Emit a trailing
+	 trap and exit, which it does grok.  */
+      fprintf (asm_out_file, "\t\ttrap; // (noreturn)\n");
+      fprintf (asm_out_file, "\t\texit; // (noreturn)\n");
+    }
 
   if (result)
     {