re PR rtl-optimization/11304 (Wrong code production with -fomit-frame-pointer)

	PR rtl-optimization/11304
	* gcc.target/i386/call-1.c (set_eax): Add "eax" clobber.
	* gcc.target/i386/call-2.c: New test.

From-SVN: r268562

gcc/testsuite/ChangeLog

+2019-02-05  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/11304
+	* gcc.target/i386/call-1.c (set_eax): Add "eax" clobber.
+	* gcc.target/i386/call-2.c: New test.
+
 2019-02-05  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/89158 - by-value capture of constexpr variable broken.

gcc/testsuite/gcc.target/i386/call-1.c

@@ -11,7 +11,7 @@ volatile int r;
 
 void set_eax(int val)
 {
-  __asm__ __volatile__ ("mov %0, %%eax" : : "m" (val));
+  __asm__ __volatile__ ("mov %0, %%eax" : : "m" (val) : "eax");
 }
 
 void foo(int val)

gcc/testsuite/gcc.target/i386/call-2.c

+/* PR optimization/11304 */
+/* Originator: <manuel.serrano@sophia.inria.fr> */
+/* { dg-do run } */
+/* { dg-options "-O -fomit-frame-pointer" } */
+
+/* Verify that %eax is always restored after a call.  */
+
+__attribute__((noipa)) void set_eax(int val);
+__attribute__((noipa)) void foo(int val);
+__attribute__((noipa)) int bar(int x);
+
+#include "call-1.c"