From 1bc5aee63eb72b341f506ad058502cd0361f0d10 Mon Sep 17 00:00:00 2001 From: Ben Cheng Date: Tue, 25 Mar 2014 22:37:19 -0700 Subject: Initial checkin of GCC 4.9.0 from trunk (r208799). Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba --- gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/980709-1.c') 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 000000000..595b7cbaa --- /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); +} -- cgit v1.2.3