[nvptx] Make trap insn noreturn

2018-05-09  Tom de Vries  <tom@codesourcery.com>

	PR target/85626
	* config/nvptx/nvptx.md (define_insn "trap", define_insn "trap_if_true")
	(define_insn "trap_if_false"): Add exit after trap.

From-SVN: r260072

gcc/ChangeLog

+2018-05-09  Tom de Vries  <tom@codesourcery.com>
+
+	PR target/85626
+	* config/nvptx/nvptx.md (define_insn "trap", define_insn "trap_if_true")
+	(define_insn "trap_if_false"): Add exit after trap.
+
 2018-05-09  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR rtl-optimization/85638

gcc/config/nvptx/nvptx.md

@@ -1101,14 +1101,14 @@
 (define_insn "trap"
   [(trap_if (const_int 1) (const_int 0))]
   ""
-  "trap;")
+  "trap; exit;")
 
 (define_insn "trap_if_true"
   [(trap_if (ne (match_operand:BI 0 "nvptx_register_operand" "R")
 		(const_int 0))
 	    (const_int 0))]
   ""
-  "%j0 trap;"
+  "%j0 trap; %j0 exit;"
   [(set_attr "predicable" "false")])
 
 (define_insn "trap_if_false"
@@ -1116,7 +1116,7 @@
 		(const_int 0))
 	    (const_int 0))]
   ""
-  "%J0 trap;"
+  "%J0 trap; %J0 exit;"
   [(set_attr "predicable" "false")])
 
 (define_expand "ctrap<mode>4"