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diff gcc/testsuite/gcc.dg/pr80492.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr80492.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-w -O2 -fdump-tree-optimized" } */
+
+static __inline__ __attribute__((__always_inline__))
+void syscall_7 (int val)
+{
+  register int reg __asm ("4") = val;
+  __asm __volatile__ ("/* Some Code %0 */" :: "r" (reg));
+}
+
+void do_syscalls (void)
+{
+  for (int s = 0; s < 2; s++)
+    {
+      syscall_7 (0);
+      syscall_7 (1);
+    }
+}
+
+/* { dg-final { scan-tree-dump-times "reg = " 4 "optimized" } } */