33 lines · c
1// REQUIRES: arm-registered-target2// RUN: %clang_cc1 -triple armv7-apple-darwin9 -emit-llvm -w -o - %s | FileCheck %s3 4typedef long long int64_t;5typedef unsigned int uint32_t;6 7int64_t foo(int64_t v, volatile int64_t *p)8{9 register uint32_t rl asm("r1");10 register uint32_t rh asm("r2");11 12 int64_t r;13 uint32_t t;14 15 __asm__ __volatile__( \16 "ldrexd%[_rl], %[_rh], [%[_p]]" \17 : [_rl] "=&r" (rl), [_rh] "=&r" (rh) \18 : [_p] "p" (p) : "memory");19 20 // CHECK: call { i32, i32 } asm sideeffect "ldrexd$0, $1, [$2]", "=&{r1},=&{r2},r,~{memory}"(ptr21 22 return r;23}24 25// Make sure we translate register names properly.26void bar (void) {27 register unsigned int rn asm("r14");28 register unsigned int d asm("r2");29 30 // CHECK: call i32 asm sideeffect "sub $1, $1, #32", "={r2},{lr}"31 asm volatile ("sub %1, %1, #32" : "=r"(d) : "r"(rn));32}33