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authorBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
committerBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c')
-rw-r--r--gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c b/gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c
new file mode 100644
index 0000000..595b7cb
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options -O2 } */
+
+extern __inline__ int test_and_set_bit(int nr, volatile void * addr)
+{
+ int oldbit;
+ __asm__ __volatile__( ""
+ "btsl %2,%1\n\tsbbl %0,%0"
+ :"=r" (oldbit),"=m" (addr)
+ :"ir" (nr));
+ return oldbit;
+}
+struct buffer_head {
+ unsigned long b_state;
+};
+extern void lock_buffer(struct buffer_head * bh)
+{
+ while (test_and_set_bit(2 , &bh->b_state))
+ __wait_on_buffer(bh);
+}