Add new tests for --completion option.

2018-07-02  Martin Liska  <mliska@suse.cz>

	* gcc.dg/completion-1.c: New test.
	* gcc.dg/completion-2.c: New test.
	* gcc.dg/completion-3.c: New test.

From-SVN: r262304

gcc/testsuite/ChangeLog

+2018-07-02  Martin Liska  <mliska@suse.cz>
+
+	* gcc.dg/completion-1.c: New test.
+	* gcc.dg/completion-2.c: New test.
+	* gcc.dg/completion-3.c: New test.
+
 2018-07-02  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/82969

gcc/testsuite/gcc.dg/completion-1.c

+/* { dg-do compile } */
+/* { dg-options "--completion=-fipa-ic" } */
+
+/* { dg-begin-multiline-output "" }
+-fipa-icf
+-fipa-icf-functions
+-fipa-icf-variables
+   { dg-end-multiline-output "" } */

gcc/testsuite/gcc.dg/completion-2.c

+/* { dg-do compile } */
+/* { dg-options "--completion=-flto-parti" } */
+
+/* { dg-begin-multiline-output "" }
+-flto-partition=1to1
+-flto-partition=balanced
+-flto-partition=max
+-flto-partition=none
+-flto-partition=one
+   { dg-end-multiline-output "" } */

gcc/testsuite/gcc.dg/completion-3.c

+/* { dg-do compile } */
+/* { dg-options "--completion=--param=asan-" } */
+
+/* { dg-begin-multiline-output "" }
+--param=asan-stack
+--param=asan-instrument-allocas
+--param=asan-globals
+--param=asan-instrument-writes
+--param=asan-instrument-reads
+--param=asan-memintrin
+--param=asan-use-after-return
+--param=asan-instrumentation-with-call-threshold
+   { dg-end-multiline-output "" } */