arm-asm-variable.c revision b165ed7f282b736bb7fe9fa5e98455a437d23fa4 
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
10int64_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*
24
25  return r;
26}
27