1 // RUN: %clang_cc1 -triple armv7-apple-darwin9 -emit-llvm -w -o - %s | FileCheck %s
2 #include <stdint.h>
3 
4 #define ldrex_func(p, rl, rh) \
5   __asm__ __volatile__( \
6 		       "ldrexd%[_rl], %[_rh], [%[_p]]" \
7 		       : [_rl] "=&r" (rl), [_rh] "=&r" (rh) \
8 		       : [_p] "p" (p) : "memory")
9 
10 int64_t foo(int64_t v, volatile int64_t *p)
11 {
12   register uint32_t rl asm("r1");
13   register uint32_t rh asm("r2");
14 
15   int64_t r;
16   uint32_t t;
17 
18   __asm__ __volatile__(							\
19 		       "ldrexd%[_rl], %[_rh], [%[_p]]"			\
20 		       : [_rl] "=&r" (rl), [_rh] "=&r" (rh)		\
21 		       : [_p] "p" (p) : "memory");
22 
23   // CHECK: %0 = call %0 asm sideeffect "ldrexd$0, $1, [$2]", "={r1},={r2},r,~{memory}"(i64* %tmp)
24 
25   return r;
26 }
27