| // RUN: clang -emit-llvm %s -o %t -arch=i386 && |
| void t1(int len) { |
| __asm__ volatile("" : "=&r"(len), "+&r"(len)); |
| } |
| |
| void t2(unsigned long long t) { |
| __asm__ volatile("" : "+m"(t)); |
| } |
| |
| void t3(unsigned char *src, unsigned long long temp) { |
| __asm__ volatile("" : "+m"(temp), "+r"(src)); |
| } |
| |
| void t4() { |
| unsigned long long a; |
| struct reg { unsigned long long a, b; } b; |
| |
| __asm__ volatile ("":: "m"(a), "m"(b)); |
| } |
| |
| // PR3417 |
| void t5(int i) { |
| asm("nop" : "=r"(i) : "0"(t5)); |
| } |
| |
| // PR3641 |
| void t6(void) { |
| __asm__ volatile("" : : "i" (t6)); |
| } |
| |
| // RUN: grep "T7 NAMED: \$2" %t && |
| void t7(int a) { |
| __asm__ volatile("T7 NAMED: %[input]" : "+r"(a): [input] "i" (4)); |
| } |
| |
| // RUN: grep "T8 NAMED MODIFIER: \${0:c}" %t |
| void t8() { |
| __asm__ volatile("T8 NAMED MODIFIER: %c[input]" :: [input] "i" (4)); |
| } |
| |
| // PR3682 |
| unsigned t9(unsigned int a) { |
| asm("bswap %0 %1" : "+r" (a)); |
| return a; |
| } |