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-rw-r--r--gcc/testsuite/gcc.dg/asm-b.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/asm-b.c b/gcc/testsuite/gcc.dg/asm-b.c
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+++ b/gcc/testsuite/gcc.dg/asm-b.c
@@ -0,0 +1,39 @@
+/* { dg-do run { target powerpc-*-* i?386-*-* x86_64-*-* } } */
+/* { dg-options "-O1" } */
+/* Test to make sure that inline-asm causes the tree optimizators get the
+ V_MAY_DEFs and clober memory. */
+/* Test from Jakub Jelinek, modified by Andrew Pinski to work on all powerpc targets. */
+extern void abort (void);
+
+unsigned short v = 0x0300;
+
+void
+foo (unsigned short *p)
+{
+ *p = v;
+}
+
+int
+bar (void)
+{
+ unsigned short x;
+ volatile unsigned short *z;
+ foo (&x);
+ const unsigned int y = x;
+ z = &x;
+#if defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER)
+ __asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z));
+#elif defined __i386__ || defined __x86_64__
+ __asm __volatile ("movb %b1,1(%2); movb %h1,(%2)" : "=m" (*z) : "r" (y), "r"
+(z));
+#endif
+ return (x & 1) == 0;
+}
+
+int
+main (void)
+{
+ if (bar ())
+ abort ();
+ return 0;
+}